Wed, 09 Apr 2008 15:10:22 -0700
Merge
duke@435 | 1 | /* |
duke@435 | 2 | * Copyright 1997-2007 Sun Microsystems, Inc. All Rights Reserved. |
duke@435 | 3 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
duke@435 | 4 | * |
duke@435 | 5 | * This code is free software; you can redistribute it and/or modify it |
duke@435 | 6 | * under the terms of the GNU General Public License version 2 only, as |
duke@435 | 7 | * published by the Free Software Foundation. |
duke@435 | 8 | * |
duke@435 | 9 | * This code is distributed in the hope that it will be useful, but WITHOUT |
duke@435 | 10 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
duke@435 | 11 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
duke@435 | 12 | * version 2 for more details (a copy is included in the LICENSE file that |
duke@435 | 13 | * accompanied this code). |
duke@435 | 14 | * |
duke@435 | 15 | * You should have received a copy of the GNU General Public License version |
duke@435 | 16 | * 2 along with this work; if not, write to the Free Software Foundation, |
duke@435 | 17 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
duke@435 | 18 | * |
duke@435 | 19 | * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, |
duke@435 | 20 | * CA 95054 USA or visit www.sun.com if you need additional information or |
duke@435 | 21 | * have any questions. |
duke@435 | 22 | * |
duke@435 | 23 | */ |
duke@435 | 24 | |
duke@435 | 25 | # include "incls/_precompiled.incl" |
duke@435 | 26 | # include "incls/_jni.cpp.incl" |
duke@435 | 27 | |
duke@435 | 28 | static jint CurrentVersion = JNI_VERSION_1_6; |
duke@435 | 29 | |
duke@435 | 30 | |
duke@435 | 31 | // The DT_RETURN_MARK macros create a scoped object to fire the dtrace |
duke@435 | 32 | // '-return' probe regardless of the return path is taken out of the function. |
duke@435 | 33 | // Methods that have multiple return paths use this to avoid having to |
duke@435 | 34 | // instrument each return path. Methods that use CHECK or THROW must use this |
duke@435 | 35 | // since those macros can cause an immedate uninstrumented return. |
duke@435 | 36 | // |
duke@435 | 37 | // In order to get the return value, a reference to the variable containing |
duke@435 | 38 | // the return value must be passed to the contructor of the object, and |
duke@435 | 39 | // the return value must be set before return (since the mark object has |
duke@435 | 40 | // a reference to it). |
duke@435 | 41 | // |
duke@435 | 42 | // Example: |
duke@435 | 43 | // DT_RETURN_MARK_DECL(SomeFunc, int); |
duke@435 | 44 | // JNI_ENTRY(int, SomeFunc, ...) |
duke@435 | 45 | // int return_value = 0; |
duke@435 | 46 | // DT_RETURN_MARK(SomeFunc, int, (const int&)return_value); |
duke@435 | 47 | // foo(CHECK_0) |
duke@435 | 48 | // return_value = 5; |
duke@435 | 49 | // return return_value; |
duke@435 | 50 | // JNI_END |
duke@435 | 51 | #define DT_RETURN_MARK_DECL(name, type) \ |
duke@435 | 52 | HS_DTRACE_PROBE_DECL1(hotspot_jni, name##__return, type); \ |
duke@435 | 53 | DTRACE_ONLY( \ |
duke@435 | 54 | class DTraceReturnProbeMark_##name { \ |
duke@435 | 55 | public: \ |
duke@435 | 56 | const type& _ret_ref; \ |
duke@435 | 57 | DTraceReturnProbeMark_##name(const type& v) : _ret_ref(v) {} \ |
duke@435 | 58 | ~DTraceReturnProbeMark_##name() { \ |
duke@435 | 59 | HS_DTRACE_PROBE1(hotspot_jni, name##__return, _ret_ref); \ |
duke@435 | 60 | } \ |
duke@435 | 61 | } \ |
duke@435 | 62 | ) |
duke@435 | 63 | // Void functions are simpler since there's no return value |
duke@435 | 64 | #define DT_VOID_RETURN_MARK_DECL(name) \ |
duke@435 | 65 | HS_DTRACE_PROBE_DECL0(hotspot_jni, name##__return); \ |
duke@435 | 66 | DTRACE_ONLY( \ |
duke@435 | 67 | class DTraceReturnProbeMark_##name { \ |
duke@435 | 68 | public: \ |
duke@435 | 69 | ~DTraceReturnProbeMark_##name() { \ |
duke@435 | 70 | HS_DTRACE_PROBE0(hotspot_jni, name##__return); \ |
duke@435 | 71 | } \ |
duke@435 | 72 | } \ |
duke@435 | 73 | ) |
duke@435 | 74 | |
duke@435 | 75 | |
duke@435 | 76 | // Place these macros in the function to mark the return. Non-void |
duke@435 | 77 | // functions need the type and address of the return value. |
duke@435 | 78 | #define DT_RETURN_MARK(name, type, ref) \ |
duke@435 | 79 | DTRACE_ONLY( DTraceReturnProbeMark_##name dtrace_return_mark(ref) ) |
duke@435 | 80 | #define DT_VOID_RETURN_MARK(name) \ |
duke@435 | 81 | DTRACE_ONLY( DTraceReturnProbeMark_##name dtrace_return_mark ) |
duke@435 | 82 | |
duke@435 | 83 | |
duke@435 | 84 | // Use these to select distinct code for floating-point vs. non-floating point |
duke@435 | 85 | // situations. Used from within common macros where we need slightly |
duke@435 | 86 | // different behavior for Float/Double |
duke@435 | 87 | #define FP_SELECT_Boolean(intcode, fpcode) intcode |
duke@435 | 88 | #define FP_SELECT_Byte(intcode, fpcode) intcode |
duke@435 | 89 | #define FP_SELECT_Char(intcode, fpcode) intcode |
duke@435 | 90 | #define FP_SELECT_Short(intcode, fpcode) intcode |
duke@435 | 91 | #define FP_SELECT_Object(intcode, fpcode) intcode |
duke@435 | 92 | #define FP_SELECT_Int(intcode, fpcode) intcode |
duke@435 | 93 | #define FP_SELECT_Long(intcode, fpcode) intcode |
duke@435 | 94 | #define FP_SELECT_Float(intcode, fpcode) fpcode |
duke@435 | 95 | #define FP_SELECT_Double(intcode, fpcode) fpcode |
duke@435 | 96 | #define FP_SELECT(TypeName, intcode, fpcode) \ |
duke@435 | 97 | FP_SELECT_##TypeName(intcode, fpcode) |
duke@435 | 98 | |
duke@435 | 99 | #define COMMA , |
duke@435 | 100 | |
duke@435 | 101 | // Choose DT_RETURN_MARK macros based on the type: float/double -> void |
duke@435 | 102 | // (dtrace doesn't do FP yet) |
duke@435 | 103 | #define DT_RETURN_MARK_DECL_FOR(TypeName, name, type) \ |
duke@435 | 104 | FP_SELECT(TypeName, \ |
duke@435 | 105 | DT_RETURN_MARK_DECL(name, type), DT_VOID_RETURN_MARK_DECL(name) ) |
duke@435 | 106 | #define DT_RETURN_MARK_FOR(TypeName, name, type, ref) \ |
duke@435 | 107 | FP_SELECT(TypeName, \ |
duke@435 | 108 | DT_RETURN_MARK(name, type, ref), DT_VOID_RETURN_MARK(name) ) |
duke@435 | 109 | |
duke@435 | 110 | |
duke@435 | 111 | // out-of-line helpers for class jfieldIDWorkaround: |
duke@435 | 112 | |
duke@435 | 113 | bool jfieldIDWorkaround::is_valid_jfieldID(klassOop k, jfieldID id) { |
duke@435 | 114 | if (jfieldIDWorkaround::is_instance_jfieldID(k, id)) { |
duke@435 | 115 | uintptr_t as_uint = (uintptr_t) id; |
duke@435 | 116 | intptr_t offset = raw_instance_offset(id); |
duke@435 | 117 | if (is_checked_jfieldID(id)) { |
duke@435 | 118 | if (!klass_hash_ok(k, id)) { |
duke@435 | 119 | return false; |
duke@435 | 120 | } |
duke@435 | 121 | } |
duke@435 | 122 | return instanceKlass::cast(k)->contains_field_offset(offset); |
duke@435 | 123 | } else { |
duke@435 | 124 | JNIid* result = (JNIid*) id; |
duke@435 | 125 | #ifdef ASSERT |
duke@435 | 126 | return result != NULL && result->is_static_field_id(); |
duke@435 | 127 | #else |
duke@435 | 128 | return result != NULL; |
duke@435 | 129 | #endif |
duke@435 | 130 | } |
duke@435 | 131 | } |
duke@435 | 132 | |
duke@435 | 133 | |
duke@435 | 134 | intptr_t jfieldIDWorkaround::encode_klass_hash(klassOop k, intptr_t offset) { |
duke@435 | 135 | if (offset <= small_offset_mask) { |
duke@435 | 136 | klassOop field_klass = k; |
duke@435 | 137 | klassOop super_klass = Klass::cast(field_klass)->super(); |
duke@435 | 138 | while (instanceKlass::cast(super_klass)->contains_field_offset(offset)) { |
duke@435 | 139 | field_klass = super_klass; // super contains the field also |
duke@435 | 140 | super_klass = Klass::cast(field_klass)->super(); |
duke@435 | 141 | } |
duke@435 | 142 | debug_only(No_Safepoint_Verifier nosafepoint;) |
duke@435 | 143 | uintptr_t klass_hash = field_klass->identity_hash(); |
duke@435 | 144 | return ((klass_hash & klass_mask) << klass_shift) | checked_mask_in_place; |
duke@435 | 145 | } else { |
duke@435 | 146 | #if 0 |
duke@435 | 147 | #ifndef PRODUCT |
duke@435 | 148 | { |
duke@435 | 149 | ResourceMark rm; |
duke@435 | 150 | warning("VerifyJNIFields: long offset %d in %s", offset, Klass::cast(k)->external_name()); |
duke@435 | 151 | } |
duke@435 | 152 | #endif |
duke@435 | 153 | #endif |
duke@435 | 154 | return 0; |
duke@435 | 155 | } |
duke@435 | 156 | } |
duke@435 | 157 | |
duke@435 | 158 | bool jfieldIDWorkaround::klass_hash_ok(klassOop k, jfieldID id) { |
duke@435 | 159 | uintptr_t as_uint = (uintptr_t) id; |
duke@435 | 160 | intptr_t klass_hash = (as_uint >> klass_shift) & klass_mask; |
duke@435 | 161 | do { |
duke@435 | 162 | debug_only(No_Safepoint_Verifier nosafepoint;) |
duke@435 | 163 | // Could use a non-blocking query for identity_hash here... |
duke@435 | 164 | if ((k->identity_hash() & klass_mask) == klass_hash) |
duke@435 | 165 | return true; |
duke@435 | 166 | k = Klass::cast(k)->super(); |
duke@435 | 167 | } while (k != NULL); |
duke@435 | 168 | return false; |
duke@435 | 169 | } |
duke@435 | 170 | |
duke@435 | 171 | void jfieldIDWorkaround::verify_instance_jfieldID(klassOop k, jfieldID id) { |
duke@435 | 172 | guarantee(jfieldIDWorkaround::is_instance_jfieldID(k, id), "must be an instance field" ); |
duke@435 | 173 | uintptr_t as_uint = (uintptr_t) id; |
duke@435 | 174 | intptr_t offset = raw_instance_offset(id); |
duke@435 | 175 | if (VerifyJNIFields) { |
duke@435 | 176 | if (is_checked_jfieldID(id)) { |
duke@435 | 177 | guarantee(klass_hash_ok(k, id), |
duke@435 | 178 | "Bug in native code: jfieldID class must match object"); |
duke@435 | 179 | } else { |
duke@435 | 180 | #if 0 |
duke@435 | 181 | #ifndef PRODUCT |
duke@435 | 182 | if (Verbose) { |
duke@435 | 183 | ResourceMark rm; |
duke@435 | 184 | warning("VerifyJNIFields: unverified offset %d for %s", offset, Klass::cast(k)->external_name()); |
duke@435 | 185 | } |
duke@435 | 186 | #endif |
duke@435 | 187 | #endif |
duke@435 | 188 | } |
duke@435 | 189 | } |
duke@435 | 190 | guarantee(instanceKlass::cast(k)->contains_field_offset(offset), |
duke@435 | 191 | "Bug in native code: jfieldID offset must address interior of object"); |
duke@435 | 192 | } |
duke@435 | 193 | |
duke@435 | 194 | // Pick a reasonable higher bound for local capacity requested |
duke@435 | 195 | // for EnsureLocalCapacity and PushLocalFrame. We don't want it too |
duke@435 | 196 | // high because a test (or very unusual application) may try to allocate |
duke@435 | 197 | // that many handles and run out of swap space. An implementation is |
duke@435 | 198 | // permitted to allocate more handles than the ensured capacity, so this |
duke@435 | 199 | // value is set high enough to prevent compatibility problems. |
duke@435 | 200 | const int MAX_REASONABLE_LOCAL_CAPACITY = 4*K; |
duke@435 | 201 | |
duke@435 | 202 | |
duke@435 | 203 | // Wrapper to trace JNI functions |
duke@435 | 204 | |
duke@435 | 205 | #ifdef ASSERT |
duke@435 | 206 | Histogram* JNIHistogram; |
duke@435 | 207 | static volatile jint JNIHistogram_lock = 0; |
duke@435 | 208 | |
duke@435 | 209 | class JNITraceWrapper : public StackObj { |
duke@435 | 210 | public: |
duke@435 | 211 | JNITraceWrapper(const char* format, ...) { |
duke@435 | 212 | if (TraceJNICalls) { |
duke@435 | 213 | va_list ap; |
duke@435 | 214 | va_start(ap, format); |
duke@435 | 215 | tty->print("JNI "); |
duke@435 | 216 | tty->vprint_cr(format, ap); |
duke@435 | 217 | va_end(ap); |
duke@435 | 218 | } |
duke@435 | 219 | } |
duke@435 | 220 | }; |
duke@435 | 221 | |
duke@435 | 222 | class JNIHistogramElement : public HistogramElement { |
duke@435 | 223 | public: |
duke@435 | 224 | JNIHistogramElement(const char* name); |
duke@435 | 225 | }; |
duke@435 | 226 | |
duke@435 | 227 | JNIHistogramElement::JNIHistogramElement(const char* elementName) { |
duke@435 | 228 | _name = elementName; |
duke@435 | 229 | uintx count = 0; |
duke@435 | 230 | |
duke@435 | 231 | while (Atomic::cmpxchg(1, &JNIHistogram_lock, 0) != 0) { |
duke@435 | 232 | while (OrderAccess::load_acquire(&JNIHistogram_lock) != 0) { |
duke@435 | 233 | count +=1; |
duke@435 | 234 | if ( (WarnOnStalledSpinLock > 0) |
duke@435 | 235 | && (count % WarnOnStalledSpinLock == 0)) { |
duke@435 | 236 | warning("JNIHistogram_lock seems to be stalled"); |
duke@435 | 237 | } |
duke@435 | 238 | } |
duke@435 | 239 | } |
duke@435 | 240 | |
duke@435 | 241 | |
duke@435 | 242 | if(JNIHistogram == NULL) |
duke@435 | 243 | JNIHistogram = new Histogram("JNI Call Counts",100); |
duke@435 | 244 | |
duke@435 | 245 | JNIHistogram->add_element(this); |
duke@435 | 246 | Atomic::dec(&JNIHistogram_lock); |
duke@435 | 247 | } |
duke@435 | 248 | |
duke@435 | 249 | #define JNICountWrapper(arg) \ |
duke@435 | 250 | static JNIHistogramElement* e = new JNIHistogramElement(arg); \ |
duke@435 | 251 | /* There is a MT-race condition in VC++. So we need to make sure that that e has been initialized */ \ |
duke@435 | 252 | if (e != NULL) e->increment_count() |
duke@435 | 253 | #define JNIWrapper(arg) JNICountWrapper(arg); JNITraceWrapper(arg) |
duke@435 | 254 | #else |
duke@435 | 255 | #define JNIWrapper(arg) |
duke@435 | 256 | #endif |
duke@435 | 257 | |
duke@435 | 258 | |
duke@435 | 259 | // Implementation of JNI entries |
duke@435 | 260 | |
duke@435 | 261 | DT_RETURN_MARK_DECL(DefineClass, jclass); |
duke@435 | 262 | |
duke@435 | 263 | JNI_ENTRY(jclass, jni_DefineClass(JNIEnv *env, const char *name, jobject loaderRef, |
duke@435 | 264 | const jbyte *buf, jsize bufLen)) |
duke@435 | 265 | JNIWrapper("DefineClass"); |
duke@435 | 266 | |
duke@435 | 267 | DTRACE_PROBE5(hotspot_jni, DefineClass__entry, |
duke@435 | 268 | env, name, loaderRef, buf, bufLen); |
duke@435 | 269 | jclass cls = NULL; |
duke@435 | 270 | DT_RETURN_MARK(DefineClass, jclass, (const jclass&)cls); |
duke@435 | 271 | |
duke@435 | 272 | // Since exceptions can be thrown, class initialization can take place |
duke@435 | 273 | // if name is NULL no check for class name in .class stream has to be made. |
duke@435 | 274 | symbolHandle class_name; |
duke@435 | 275 | if (name != NULL) { |
duke@435 | 276 | const int str_len = (int)strlen(name); |
duke@435 | 277 | if (str_len > symbolOopDesc::max_length()) { |
duke@435 | 278 | // It's impossible to create this class; the name cannot fit |
duke@435 | 279 | // into the constant pool. |
duke@435 | 280 | THROW_MSG_0(vmSymbols::java_lang_NoClassDefFoundError(), name); |
duke@435 | 281 | } |
duke@435 | 282 | class_name = oopFactory::new_symbol_handle(name, str_len, CHECK_NULL); |
duke@435 | 283 | } |
duke@435 | 284 | |
duke@435 | 285 | ResourceMark rm(THREAD); |
duke@435 | 286 | ClassFileStream st((u1*) buf, bufLen, NULL); |
duke@435 | 287 | Handle class_loader (THREAD, JNIHandles::resolve(loaderRef)); |
duke@435 | 288 | |
duke@435 | 289 | if (UsePerfData && !class_loader.is_null()) { |
duke@435 | 290 | // check whether the current caller thread holds the lock or not. |
duke@435 | 291 | // If not, increment the corresponding counter |
duke@435 | 292 | if (ObjectSynchronizer:: |
duke@435 | 293 | query_lock_ownership((JavaThread*)THREAD, class_loader) != |
duke@435 | 294 | ObjectSynchronizer::owner_self) { |
duke@435 | 295 | ClassLoader::sync_JNIDefineClassLockFreeCounter()->inc(); |
duke@435 | 296 | } |
duke@435 | 297 | } |
duke@435 | 298 | klassOop k = SystemDictionary::resolve_from_stream(class_name, class_loader, |
duke@435 | 299 | Handle(), &st, CHECK_NULL); |
duke@435 | 300 | |
duke@435 | 301 | cls = (jclass)JNIHandles::make_local( |
duke@435 | 302 | env, Klass::cast(k)->java_mirror()); |
duke@435 | 303 | return cls; |
duke@435 | 304 | JNI_END |
duke@435 | 305 | |
duke@435 | 306 | |
duke@435 | 307 | |
duke@435 | 308 | static bool first_time_FindClass = true; |
duke@435 | 309 | |
duke@435 | 310 | DT_RETURN_MARK_DECL(FindClass, jclass); |
duke@435 | 311 | |
duke@435 | 312 | JNI_ENTRY(jclass, jni_FindClass(JNIEnv *env, const char *name)) |
duke@435 | 313 | JNIWrapper("FindClass"); |
duke@435 | 314 | DTRACE_PROBE2(hotspot_jni, FindClass__entry, env, name); |
duke@435 | 315 | |
duke@435 | 316 | jclass result = NULL; |
duke@435 | 317 | DT_RETURN_MARK(FindClass, jclass, (const jclass&)result); |
duke@435 | 318 | |
duke@435 | 319 | // Remember if we are the first invocation of jni_FindClass |
duke@435 | 320 | bool first_time = first_time_FindClass; |
duke@435 | 321 | first_time_FindClass = false; |
duke@435 | 322 | |
duke@435 | 323 | // Sanity check the name: it cannot be null or larger than the maximum size |
duke@435 | 324 | // name we can fit in the constant pool. |
duke@435 | 325 | if (name == NULL || (int)strlen(name) > symbolOopDesc::max_length()) { |
duke@435 | 326 | THROW_MSG_0(vmSymbols::java_lang_NoClassDefFoundError(), name); |
duke@435 | 327 | } |
duke@435 | 328 | |
duke@435 | 329 | //%note jni_3 |
duke@435 | 330 | Handle loader; |
duke@435 | 331 | Handle protection_domain; |
duke@435 | 332 | // Find calling class |
duke@435 | 333 | instanceKlassHandle k (THREAD, thread->security_get_caller_class(0)); |
duke@435 | 334 | if (k.not_null()) { |
duke@435 | 335 | loader = Handle(THREAD, k->class_loader()); |
duke@435 | 336 | // Special handling to make sure JNI_OnLoad and JNI_OnUnload are executed |
duke@435 | 337 | // in the correct class context. |
duke@435 | 338 | if (loader.is_null() && |
duke@435 | 339 | k->name() == vmSymbols::java_lang_ClassLoader_NativeLibrary()) { |
duke@435 | 340 | JavaValue result(T_OBJECT); |
duke@435 | 341 | JavaCalls::call_static(&result, k, |
duke@435 | 342 | vmSymbolHandles::getFromClass_name(), |
duke@435 | 343 | vmSymbolHandles::void_class_signature(), |
duke@435 | 344 | thread); |
duke@435 | 345 | if (HAS_PENDING_EXCEPTION) { |
duke@435 | 346 | Handle ex(thread, thread->pending_exception()); |
duke@435 | 347 | CLEAR_PENDING_EXCEPTION; |
duke@435 | 348 | THROW_HANDLE_0(ex); |
duke@435 | 349 | } |
duke@435 | 350 | oop mirror = (oop) result.get_jobject(); |
duke@435 | 351 | loader = Handle(THREAD, |
duke@435 | 352 | instanceKlass::cast(java_lang_Class::as_klassOop(mirror))->class_loader()); |
duke@435 | 353 | protection_domain = Handle(THREAD, |
duke@435 | 354 | instanceKlass::cast(java_lang_Class::as_klassOop(mirror))->protection_domain()); |
duke@435 | 355 | } |
duke@435 | 356 | } else { |
duke@435 | 357 | // We call ClassLoader.getSystemClassLoader to obtain the system class loader. |
duke@435 | 358 | loader = Handle(THREAD, SystemDictionary::java_system_loader()); |
duke@435 | 359 | } |
duke@435 | 360 | |
duke@435 | 361 | symbolHandle sym = oopFactory::new_symbol_handle(name, CHECK_NULL); |
duke@435 | 362 | result = find_class_from_class_loader(env, sym, true, loader, |
duke@435 | 363 | protection_domain, true, thread); |
duke@435 | 364 | |
duke@435 | 365 | // If we were the first invocation of jni_FindClass, we enable compilation again |
duke@435 | 366 | // rather than just allowing invocation counter to overflow and decay. |
duke@435 | 367 | // Controlled by flag DelayCompilationDuringStartup. |
duke@435 | 368 | if (first_time && !CompileTheWorld) |
duke@435 | 369 | CompilationPolicy::completed_vm_startup(); |
duke@435 | 370 | |
duke@435 | 371 | return result; |
duke@435 | 372 | JNI_END |
duke@435 | 373 | |
duke@435 | 374 | DT_RETURN_MARK_DECL(FromReflectedMethod, jmethodID); |
duke@435 | 375 | |
duke@435 | 376 | JNI_ENTRY(jmethodID, jni_FromReflectedMethod(JNIEnv *env, jobject method)) |
duke@435 | 377 | JNIWrapper("FromReflectedMethod"); |
duke@435 | 378 | DTRACE_PROBE2(hotspot_jni, FromReflectedMethod__entry, env, method); |
duke@435 | 379 | jmethodID ret = NULL; |
duke@435 | 380 | DT_RETURN_MARK(FromReflectedMethod, jmethodID, (const jmethodID&)ret); |
duke@435 | 381 | |
duke@435 | 382 | // method is a handle to a java.lang.reflect.Method object |
duke@435 | 383 | oop reflected = JNIHandles::resolve_non_null(method); |
duke@435 | 384 | oop mirror = NULL; |
duke@435 | 385 | int slot = 0; |
duke@435 | 386 | |
duke@435 | 387 | if (reflected->klass() == SystemDictionary::reflect_constructor_klass()) { |
duke@435 | 388 | mirror = java_lang_reflect_Constructor::clazz(reflected); |
duke@435 | 389 | slot = java_lang_reflect_Constructor::slot(reflected); |
duke@435 | 390 | } else { |
duke@435 | 391 | assert(reflected->klass() == SystemDictionary::reflect_method_klass(), "wrong type"); |
duke@435 | 392 | mirror = java_lang_reflect_Method::clazz(reflected); |
duke@435 | 393 | slot = java_lang_reflect_Method::slot(reflected); |
duke@435 | 394 | } |
duke@435 | 395 | klassOop k = java_lang_Class::as_klassOop(mirror); |
duke@435 | 396 | |
duke@435 | 397 | KlassHandle k1(THREAD, k); |
duke@435 | 398 | // Make sure class is initialized before handing id's out to methods |
duke@435 | 399 | Klass::cast(k1())->initialize(CHECK_NULL); |
duke@435 | 400 | methodOop m = instanceKlass::cast(k1())->method_with_idnum(slot); |
duke@435 | 401 | ret = m==NULL? NULL : m->jmethod_id(); // return NULL if reflected method deleted |
duke@435 | 402 | return ret; |
duke@435 | 403 | JNI_END |
duke@435 | 404 | |
duke@435 | 405 | DT_RETURN_MARK_DECL(FromReflectedField, jfieldID); |
duke@435 | 406 | |
duke@435 | 407 | JNI_ENTRY(jfieldID, jni_FromReflectedField(JNIEnv *env, jobject field)) |
duke@435 | 408 | JNIWrapper("FromReflectedField"); |
duke@435 | 409 | DTRACE_PROBE2(hotspot_jni, FromReflectedField__entry, env, field); |
duke@435 | 410 | jfieldID ret = NULL; |
duke@435 | 411 | DT_RETURN_MARK(FromReflectedField, jfieldID, (const jfieldID&)ret); |
duke@435 | 412 | |
duke@435 | 413 | // field is a handle to a java.lang.reflect.Field object |
duke@435 | 414 | oop reflected = JNIHandles::resolve_non_null(field); |
duke@435 | 415 | oop mirror = java_lang_reflect_Field::clazz(reflected); |
duke@435 | 416 | klassOop k = java_lang_Class::as_klassOop(mirror); |
duke@435 | 417 | int slot = java_lang_reflect_Field::slot(reflected); |
duke@435 | 418 | int modifiers = java_lang_reflect_Field::modifiers(reflected); |
duke@435 | 419 | |
duke@435 | 420 | KlassHandle k1(THREAD, k); |
duke@435 | 421 | // Make sure class is initialized before handing id's out to fields |
duke@435 | 422 | Klass::cast(k1())->initialize(CHECK_NULL); |
duke@435 | 423 | |
duke@435 | 424 | // First check if this is a static field |
duke@435 | 425 | if (modifiers & JVM_ACC_STATIC) { |
duke@435 | 426 | intptr_t offset = instanceKlass::cast(k1())->offset_from_fields( slot ); |
duke@435 | 427 | JNIid* id = instanceKlass::cast(k1())->jni_id_for(offset); |
duke@435 | 428 | assert(id != NULL, "corrupt Field object"); |
duke@435 | 429 | debug_only(id->set_is_static_field_id();) |
duke@435 | 430 | // A jfieldID for a static field is a JNIid specifying the field holder and the offset within the klassOop |
duke@435 | 431 | ret = jfieldIDWorkaround::to_static_jfieldID(id); |
duke@435 | 432 | return ret; |
duke@435 | 433 | } |
duke@435 | 434 | |
duke@435 | 435 | // The slot is the index of the field description in the field-array |
duke@435 | 436 | // The jfieldID is the offset of the field within the object |
duke@435 | 437 | // It may also have hash bits for k, if VerifyJNIFields is turned on. |
duke@435 | 438 | intptr_t offset = instanceKlass::cast(k1())->offset_from_fields( slot ); |
duke@435 | 439 | assert(instanceKlass::cast(k1())->contains_field_offset(offset), "stay within object"); |
duke@435 | 440 | ret = jfieldIDWorkaround::to_instance_jfieldID(k1(), offset); |
duke@435 | 441 | return ret; |
duke@435 | 442 | JNI_END |
duke@435 | 443 | |
duke@435 | 444 | DT_RETURN_MARK_DECL(ToReflectedMethod, jobject); |
duke@435 | 445 | |
duke@435 | 446 | JNI_ENTRY(jobject, jni_ToReflectedMethod(JNIEnv *env, jclass cls, jmethodID method_id, jboolean isStatic)) |
duke@435 | 447 | JNIWrapper("ToReflectedMethod"); |
duke@435 | 448 | DTRACE_PROBE4(hotspot_jni, ToReflectedMethod__entry, env, cls, method_id, isStatic); |
duke@435 | 449 | jobject ret = NULL; |
duke@435 | 450 | DT_RETURN_MARK(ToReflectedMethod, jobject, (const jobject&)ret); |
duke@435 | 451 | |
duke@435 | 452 | methodHandle m (THREAD, JNIHandles::resolve_jmethod_id(method_id)); |
duke@435 | 453 | assert(m->is_static() == (isStatic != 0), "jni_ToReflectedMethod access flags doesn't match"); |
duke@435 | 454 | oop reflection_method; |
duke@435 | 455 | if (m->is_initializer()) { |
duke@435 | 456 | reflection_method = Reflection::new_constructor(m, CHECK_NULL); |
duke@435 | 457 | } else { |
duke@435 | 458 | reflection_method = Reflection::new_method(m, UseNewReflection, false, CHECK_NULL); |
duke@435 | 459 | } |
duke@435 | 460 | ret = JNIHandles::make_local(env, reflection_method); |
duke@435 | 461 | return ret; |
duke@435 | 462 | JNI_END |
duke@435 | 463 | |
duke@435 | 464 | DT_RETURN_MARK_DECL(GetSuperclass, jclass); |
duke@435 | 465 | |
duke@435 | 466 | JNI_ENTRY(jclass, jni_GetSuperclass(JNIEnv *env, jclass sub)) |
duke@435 | 467 | JNIWrapper("GetSuperclass"); |
duke@435 | 468 | DTRACE_PROBE2(hotspot_jni, GetSuperclass__entry, env, sub); |
duke@435 | 469 | jclass obj = NULL; |
duke@435 | 470 | DT_RETURN_MARK(GetSuperclass, jclass, (const jclass&)obj); |
duke@435 | 471 | |
duke@435 | 472 | oop mirror = JNIHandles::resolve_non_null(sub); |
duke@435 | 473 | // primitive classes return NULL |
duke@435 | 474 | if (java_lang_Class::is_primitive(mirror)) return NULL; |
duke@435 | 475 | |
duke@435 | 476 | // Rules of Class.getSuperClass as implemented by KLass::java_super: |
duke@435 | 477 | // arrays return Object |
duke@435 | 478 | // interfaces return NULL |
duke@435 | 479 | // proper classes return Klass::super() |
duke@435 | 480 | klassOop k = java_lang_Class::as_klassOop(mirror); |
duke@435 | 481 | if (Klass::cast(k)->is_interface()) return NULL; |
duke@435 | 482 | |
duke@435 | 483 | // return mirror for superclass |
duke@435 | 484 | klassOop super = Klass::cast(k)->java_super(); |
duke@435 | 485 | // super2 is the value computed by the compiler's getSuperClass intrinsic: |
duke@435 | 486 | debug_only(klassOop super2 = ( Klass::cast(k)->oop_is_javaArray() |
duke@435 | 487 | ? SystemDictionary::object_klass() |
duke@435 | 488 | : Klass::cast(k)->super() ) ); |
duke@435 | 489 | assert(super == super2, |
duke@435 | 490 | "java_super computation depends on interface, array, other super"); |
duke@435 | 491 | obj = (super == NULL) ? NULL : (jclass) JNIHandles::make_local(Klass::cast(super)->java_mirror()); |
duke@435 | 492 | return obj; |
duke@435 | 493 | JNI_END |
duke@435 | 494 | |
duke@435 | 495 | JNI_QUICK_ENTRY(jboolean, jni_IsAssignableFrom(JNIEnv *env, jclass sub, jclass super)) |
duke@435 | 496 | JNIWrapper("IsSubclassOf"); |
duke@435 | 497 | DTRACE_PROBE3(hotspot_jni, IsAssignableFrom__entry, env, sub, super); |
duke@435 | 498 | oop sub_mirror = JNIHandles::resolve_non_null(sub); |
duke@435 | 499 | oop super_mirror = JNIHandles::resolve_non_null(super); |
duke@435 | 500 | if (java_lang_Class::is_primitive(sub_mirror) || |
duke@435 | 501 | java_lang_Class::is_primitive(super_mirror)) { |
duke@435 | 502 | jboolean ret = (sub_mirror == super_mirror); |
duke@435 | 503 | DTRACE_PROBE1(hotspot_jni, IsAssignableFrom__return, ret); |
duke@435 | 504 | return ret; |
duke@435 | 505 | } |
duke@435 | 506 | klassOop sub_klass = java_lang_Class::as_klassOop(sub_mirror); |
duke@435 | 507 | klassOop super_klass = java_lang_Class::as_klassOop(super_mirror); |
duke@435 | 508 | assert(sub_klass != NULL && super_klass != NULL, "invalid arguments to jni_IsAssignableFrom"); |
duke@435 | 509 | jboolean ret = Klass::cast(sub_klass)->is_subtype_of(super_klass) ? |
duke@435 | 510 | JNI_TRUE : JNI_FALSE; |
duke@435 | 511 | DTRACE_PROBE1(hotspot_jni, IsAssignableFrom__return, ret); |
duke@435 | 512 | return ret; |
duke@435 | 513 | JNI_END |
duke@435 | 514 | |
duke@435 | 515 | DT_RETURN_MARK_DECL(Throw, jint); |
duke@435 | 516 | |
duke@435 | 517 | JNI_ENTRY(jint, jni_Throw(JNIEnv *env, jthrowable obj)) |
duke@435 | 518 | JNIWrapper("Throw"); |
duke@435 | 519 | DTRACE_PROBE2(hotspot_jni, Throw__entry, env, obj); |
duke@435 | 520 | jint ret = JNI_OK; |
duke@435 | 521 | DT_RETURN_MARK(Throw, jint, (const jint&)ret); |
duke@435 | 522 | |
duke@435 | 523 | THROW_OOP_(JNIHandles::resolve(obj), JNI_OK); |
duke@435 | 524 | ShouldNotReachHere(); |
duke@435 | 525 | JNI_END |
duke@435 | 526 | |
duke@435 | 527 | DT_RETURN_MARK_DECL(ThrowNew, jint); |
duke@435 | 528 | |
duke@435 | 529 | JNI_ENTRY(jint, jni_ThrowNew(JNIEnv *env, jclass clazz, const char *message)) |
duke@435 | 530 | JNIWrapper("ThrowNew"); |
duke@435 | 531 | DTRACE_PROBE3(hotspot_jni, ThrowNew__entry, env, clazz, message); |
duke@435 | 532 | jint ret = JNI_OK; |
duke@435 | 533 | DT_RETURN_MARK(ThrowNew, jint, (const jint&)ret); |
duke@435 | 534 | |
duke@435 | 535 | instanceKlass* k = instanceKlass::cast(java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(clazz))); |
duke@435 | 536 | symbolHandle name = symbolHandle(THREAD, k->name()); |
duke@435 | 537 | Handle class_loader (THREAD, k->class_loader()); |
duke@435 | 538 | Handle protection_domain (THREAD, k->protection_domain()); |
duke@435 | 539 | THROW_MSG_LOADER_(name, (char *)message, class_loader, protection_domain, JNI_OK); |
duke@435 | 540 | ShouldNotReachHere(); |
duke@435 | 541 | JNI_END |
duke@435 | 542 | |
duke@435 | 543 | |
duke@435 | 544 | // JNI functions only transform a pending async exception to a synchronous |
duke@435 | 545 | // exception in ExceptionOccurred and ExceptionCheck calls, since |
duke@435 | 546 | // delivering an async exception in other places won't change the native |
duke@435 | 547 | // code's control flow and would be harmful when native code further calls |
duke@435 | 548 | // JNI functions with a pending exception. Async exception is also checked |
duke@435 | 549 | // during the call, so ExceptionOccurred/ExceptionCheck won't return |
duke@435 | 550 | // false but deliver the async exception at the very end during |
duke@435 | 551 | // state transition. |
duke@435 | 552 | |
duke@435 | 553 | static void jni_check_async_exceptions(JavaThread *thread) { |
duke@435 | 554 | assert(thread == Thread::current(), "must be itself"); |
duke@435 | 555 | thread->check_and_handle_async_exceptions(); |
duke@435 | 556 | } |
duke@435 | 557 | |
duke@435 | 558 | JNI_ENTRY_NO_PRESERVE(jthrowable, jni_ExceptionOccurred(JNIEnv *env)) |
duke@435 | 559 | JNIWrapper("ExceptionOccurred"); |
duke@435 | 560 | DTRACE_PROBE1(hotspot_jni, ExceptionOccurred__entry, env); |
duke@435 | 561 | jni_check_async_exceptions(thread); |
duke@435 | 562 | oop exception = thread->pending_exception(); |
duke@435 | 563 | jthrowable ret = (jthrowable) JNIHandles::make_local(env, exception); |
duke@435 | 564 | DTRACE_PROBE1(hotspot_jni, ExceptionOccurred__return, ret); |
duke@435 | 565 | return ret; |
duke@435 | 566 | JNI_END |
duke@435 | 567 | |
duke@435 | 568 | |
duke@435 | 569 | JNI_ENTRY_NO_PRESERVE(void, jni_ExceptionDescribe(JNIEnv *env)) |
duke@435 | 570 | JNIWrapper("ExceptionDescribe"); |
duke@435 | 571 | DTRACE_PROBE1(hotspot_jni, ExceptionDescribe__entry, env); |
duke@435 | 572 | if (thread->has_pending_exception()) { |
duke@435 | 573 | Handle ex(thread, thread->pending_exception()); |
duke@435 | 574 | thread->clear_pending_exception(); |
duke@435 | 575 | if (ex->is_a(SystemDictionary::threaddeath_klass())) { |
duke@435 | 576 | // Don't print anything if we are being killed. |
duke@435 | 577 | } else { |
duke@435 | 578 | jio_fprintf(defaultStream::error_stream(), "Exception "); |
duke@435 | 579 | if (thread != NULL && thread->threadObj() != NULL) { |
duke@435 | 580 | ResourceMark rm(THREAD); |
duke@435 | 581 | jio_fprintf(defaultStream::error_stream(), |
duke@435 | 582 | "in thread \"%s\" ", thread->get_thread_name()); |
duke@435 | 583 | } |
duke@435 | 584 | if (ex->is_a(SystemDictionary::throwable_klass())) { |
duke@435 | 585 | JavaValue result(T_VOID); |
duke@435 | 586 | JavaCalls::call_virtual(&result, |
duke@435 | 587 | ex, |
duke@435 | 588 | KlassHandle(THREAD, |
duke@435 | 589 | SystemDictionary::throwable_klass()), |
duke@435 | 590 | vmSymbolHandles::printStackTrace_name(), |
duke@435 | 591 | vmSymbolHandles::void_method_signature(), |
duke@435 | 592 | THREAD); |
duke@435 | 593 | // If an exception is thrown in the call it gets thrown away. Not much |
duke@435 | 594 | // we can do with it. The native code that calls this, does not check |
duke@435 | 595 | // for the exception - hence, it might still be in the thread when DestroyVM gets |
duke@435 | 596 | // called, potentially causing a few asserts to trigger - since no pending exception |
duke@435 | 597 | // is expected. |
duke@435 | 598 | CLEAR_PENDING_EXCEPTION; |
duke@435 | 599 | } else { |
duke@435 | 600 | ResourceMark rm(THREAD); |
duke@435 | 601 | jio_fprintf(defaultStream::error_stream(), |
duke@435 | 602 | ". Uncaught exception of type %s.", |
duke@435 | 603 | Klass::cast(ex->klass())->external_name()); |
duke@435 | 604 | } |
duke@435 | 605 | } |
duke@435 | 606 | } |
duke@435 | 607 | DTRACE_PROBE(hotspot_jni, ExceptionDescribe__return); |
duke@435 | 608 | JNI_END |
duke@435 | 609 | |
duke@435 | 610 | |
duke@435 | 611 | JNI_QUICK_ENTRY(void, jni_ExceptionClear(JNIEnv *env)) |
duke@435 | 612 | JNIWrapper("ExceptionClear"); |
duke@435 | 613 | DTRACE_PROBE1(hotspot_jni, ExceptionClear__entry, env); |
duke@435 | 614 | |
duke@435 | 615 | // The jni code might be using this API to clear java thrown exception. |
duke@435 | 616 | // So just mark jvmti thread exception state as exception caught. |
duke@435 | 617 | JvmtiThreadState *state = JavaThread::current()->jvmti_thread_state(); |
duke@435 | 618 | if (state != NULL && state->is_exception_detected()) { |
duke@435 | 619 | state->set_exception_caught(); |
duke@435 | 620 | } |
duke@435 | 621 | thread->clear_pending_exception(); |
duke@435 | 622 | DTRACE_PROBE(hotspot_jni, ExceptionClear__return); |
duke@435 | 623 | JNI_END |
duke@435 | 624 | |
duke@435 | 625 | |
duke@435 | 626 | JNI_ENTRY(void, jni_FatalError(JNIEnv *env, const char *msg)) |
duke@435 | 627 | JNIWrapper("FatalError"); |
duke@435 | 628 | DTRACE_PROBE2(hotspot_jni, FatalError__entry, env, msg); |
duke@435 | 629 | tty->print_cr("FATAL ERROR in native method: %s", msg); |
duke@435 | 630 | thread->print_stack(); |
duke@435 | 631 | os::abort(false); // Prevent core dump, causes a jck failure. |
duke@435 | 632 | JNI_END |
duke@435 | 633 | |
duke@435 | 634 | |
duke@435 | 635 | JNI_ENTRY(jint, jni_PushLocalFrame(JNIEnv *env, jint capacity)) |
duke@435 | 636 | JNIWrapper("PushLocalFrame"); |
duke@435 | 637 | DTRACE_PROBE2(hotspot_jni, PushLocalFrame__entry, env, capacity); |
duke@435 | 638 | //%note jni_11 |
duke@435 | 639 | if (capacity < 0 && capacity > MAX_REASONABLE_LOCAL_CAPACITY) { |
duke@435 | 640 | DTRACE_PROBE1(hotspot_jni, PushLocalFrame__return, JNI_ERR); |
duke@435 | 641 | return JNI_ERR; |
duke@435 | 642 | } |
duke@435 | 643 | JNIHandleBlock* old_handles = thread->active_handles(); |
duke@435 | 644 | JNIHandleBlock* new_handles = JNIHandleBlock::allocate_block(thread); |
duke@435 | 645 | assert(new_handles != NULL, "should not be NULL"); |
duke@435 | 646 | new_handles->set_pop_frame_link(old_handles); |
duke@435 | 647 | thread->set_active_handles(new_handles); |
duke@435 | 648 | jint ret = JNI_OK; |
duke@435 | 649 | DTRACE_PROBE1(hotspot_jni, PushLocalFrame__return, ret); |
duke@435 | 650 | return ret; |
duke@435 | 651 | JNI_END |
duke@435 | 652 | |
duke@435 | 653 | |
duke@435 | 654 | JNI_ENTRY(jobject, jni_PopLocalFrame(JNIEnv *env, jobject result)) |
duke@435 | 655 | JNIWrapper("PopLocalFrame"); |
duke@435 | 656 | DTRACE_PROBE2(hotspot_jni, PopLocalFrame__entry, env, result); |
duke@435 | 657 | //%note jni_11 |
duke@435 | 658 | Handle result_handle(thread, JNIHandles::resolve(result)); |
duke@435 | 659 | JNIHandleBlock* old_handles = thread->active_handles(); |
duke@435 | 660 | JNIHandleBlock* new_handles = old_handles->pop_frame_link(); |
duke@435 | 661 | if (new_handles != NULL) { |
duke@435 | 662 | // As a sanity check we only release the handle blocks if the pop_frame_link is not NULL. |
duke@435 | 663 | // This way code will still work if PopLocalFrame is called without a corresponding |
duke@435 | 664 | // PushLocalFrame call. Note that we set the pop_frame_link to NULL explicitly, otherwise |
duke@435 | 665 | // the release_block call will release the blocks. |
duke@435 | 666 | thread->set_active_handles(new_handles); |
duke@435 | 667 | old_handles->set_pop_frame_link(NULL); // clear link we won't release new_handles below |
duke@435 | 668 | JNIHandleBlock::release_block(old_handles, thread); // may block |
duke@435 | 669 | result = JNIHandles::make_local(thread, result_handle()); |
duke@435 | 670 | } |
duke@435 | 671 | DTRACE_PROBE1(hotspot_jni, PopLocalFrame__return, result); |
duke@435 | 672 | return result; |
duke@435 | 673 | JNI_END |
duke@435 | 674 | |
duke@435 | 675 | |
duke@435 | 676 | JNI_ENTRY(jobject, jni_NewGlobalRef(JNIEnv *env, jobject ref)) |
duke@435 | 677 | JNIWrapper("NewGlobalRef"); |
duke@435 | 678 | DTRACE_PROBE2(hotspot_jni, NewGlobalRef__entry, env, ref); |
duke@435 | 679 | Handle ref_handle(thread, JNIHandles::resolve(ref)); |
duke@435 | 680 | jobject ret = JNIHandles::make_global(ref_handle); |
duke@435 | 681 | DTRACE_PROBE1(hotspot_jni, NewGlobalRef__return, ret); |
duke@435 | 682 | return ret; |
duke@435 | 683 | JNI_END |
duke@435 | 684 | |
duke@435 | 685 | // Must be JNI_ENTRY (with HandleMark) |
duke@435 | 686 | JNI_ENTRY_NO_PRESERVE(void, jni_DeleteGlobalRef(JNIEnv *env, jobject ref)) |
duke@435 | 687 | JNIWrapper("DeleteGlobalRef"); |
duke@435 | 688 | DTRACE_PROBE2(hotspot_jni, DeleteGlobalRef__entry, env, ref); |
duke@435 | 689 | JNIHandles::destroy_global(ref); |
duke@435 | 690 | DTRACE_PROBE(hotspot_jni, DeleteGlobalRef__return); |
duke@435 | 691 | JNI_END |
duke@435 | 692 | |
duke@435 | 693 | JNI_QUICK_ENTRY(void, jni_DeleteLocalRef(JNIEnv *env, jobject obj)) |
duke@435 | 694 | JNIWrapper("DeleteLocalRef"); |
duke@435 | 695 | DTRACE_PROBE2(hotspot_jni, DeleteLocalRef__entry, env, obj); |
duke@435 | 696 | JNIHandles::destroy_local(obj); |
duke@435 | 697 | DTRACE_PROBE(hotspot_jni, DeleteLocalRef__return); |
duke@435 | 698 | JNI_END |
duke@435 | 699 | |
duke@435 | 700 | JNI_QUICK_ENTRY(jboolean, jni_IsSameObject(JNIEnv *env, jobject r1, jobject r2)) |
duke@435 | 701 | JNIWrapper("IsSameObject"); |
duke@435 | 702 | DTRACE_PROBE3(hotspot_jni, IsSameObject__entry, env, r1, r2); |
duke@435 | 703 | oop a = JNIHandles::resolve(r1); |
duke@435 | 704 | oop b = JNIHandles::resolve(r2); |
duke@435 | 705 | jboolean ret = (a == b) ? JNI_TRUE : JNI_FALSE; |
duke@435 | 706 | DTRACE_PROBE1(hotspot_jni, IsSameObject__return, ret); |
duke@435 | 707 | return ret; |
duke@435 | 708 | JNI_END |
duke@435 | 709 | |
duke@435 | 710 | |
duke@435 | 711 | JNI_ENTRY(jobject, jni_NewLocalRef(JNIEnv *env, jobject ref)) |
duke@435 | 712 | JNIWrapper("NewLocalRef"); |
duke@435 | 713 | DTRACE_PROBE2(hotspot_jni, NewLocalRef__entry, env, ref); |
duke@435 | 714 | jobject ret = JNIHandles::make_local(env, JNIHandles::resolve(ref)); |
duke@435 | 715 | DTRACE_PROBE1(hotspot_jni, NewLocalRef__return, ret); |
duke@435 | 716 | return ret; |
duke@435 | 717 | JNI_END |
duke@435 | 718 | |
duke@435 | 719 | JNI_LEAF(jint, jni_EnsureLocalCapacity(JNIEnv *env, jint capacity)) |
duke@435 | 720 | JNIWrapper("EnsureLocalCapacity"); |
duke@435 | 721 | DTRACE_PROBE2(hotspot_jni, EnsureLocalCapacity__entry, env, capacity); |
duke@435 | 722 | jint ret; |
duke@435 | 723 | if (capacity >= 0 && capacity <= MAX_REASONABLE_LOCAL_CAPACITY) { |
duke@435 | 724 | ret = JNI_OK; |
duke@435 | 725 | } else { |
duke@435 | 726 | ret = JNI_ERR; |
duke@435 | 727 | } |
duke@435 | 728 | DTRACE_PROBE1(hotspot_jni, EnsureLocalCapacity__return, ret); |
duke@435 | 729 | return ret; |
duke@435 | 730 | JNI_END |
duke@435 | 731 | |
duke@435 | 732 | // Return the Handle Type |
duke@435 | 733 | JNI_LEAF(jobjectRefType, jni_GetObjectRefType(JNIEnv *env, jobject obj)) |
duke@435 | 734 | JNIWrapper("GetObjectRefType"); |
duke@435 | 735 | DTRACE_PROBE2(hotspot_jni, GetObjectRefType__entry, env, obj); |
duke@435 | 736 | jobjectRefType ret; |
duke@435 | 737 | if (JNIHandles::is_local_handle(thread, obj) || |
duke@435 | 738 | JNIHandles::is_frame_handle(thread, obj)) |
duke@435 | 739 | ret = JNILocalRefType; |
duke@435 | 740 | else if (JNIHandles::is_global_handle(obj)) |
duke@435 | 741 | ret = JNIGlobalRefType; |
duke@435 | 742 | else if (JNIHandles::is_weak_global_handle(obj)) |
duke@435 | 743 | ret = JNIWeakGlobalRefType; |
duke@435 | 744 | else |
duke@435 | 745 | ret = JNIInvalidRefType; |
duke@435 | 746 | DTRACE_PROBE1(hotspot_jni, GetObjectRefType__return, ret); |
duke@435 | 747 | return ret; |
duke@435 | 748 | JNI_END |
duke@435 | 749 | |
duke@435 | 750 | |
duke@435 | 751 | class JNI_ArgumentPusher : public SignatureIterator { |
duke@435 | 752 | protected: |
duke@435 | 753 | JavaCallArguments* _arguments; |
duke@435 | 754 | |
duke@435 | 755 | virtual void get_bool () = 0; |
duke@435 | 756 | virtual void get_char () = 0; |
duke@435 | 757 | virtual void get_short () = 0; |
duke@435 | 758 | virtual void get_byte () = 0; |
duke@435 | 759 | virtual void get_int () = 0; |
duke@435 | 760 | virtual void get_long () = 0; |
duke@435 | 761 | virtual void get_float () = 0; |
duke@435 | 762 | virtual void get_double () = 0; |
duke@435 | 763 | virtual void get_object () = 0; |
duke@435 | 764 | |
duke@435 | 765 | JNI_ArgumentPusher(Thread *thread, symbolOop signature) |
duke@435 | 766 | : SignatureIterator(thread, signature) { |
duke@435 | 767 | this->_return_type = T_ILLEGAL; |
duke@435 | 768 | _arguments = NULL; |
duke@435 | 769 | } |
duke@435 | 770 | |
duke@435 | 771 | public: |
duke@435 | 772 | virtual void iterate( uint64_t fingerprint ) = 0; |
duke@435 | 773 | |
duke@435 | 774 | void set_java_argument_object(JavaCallArguments *arguments) { _arguments = arguments; } |
duke@435 | 775 | |
duke@435 | 776 | inline void do_bool() { if (!is_return_type()) get_bool(); } |
duke@435 | 777 | inline void do_char() { if (!is_return_type()) get_char(); } |
duke@435 | 778 | inline void do_short() { if (!is_return_type()) get_short(); } |
duke@435 | 779 | inline void do_byte() { if (!is_return_type()) get_byte(); } |
duke@435 | 780 | inline void do_int() { if (!is_return_type()) get_int(); } |
duke@435 | 781 | inline void do_long() { if (!is_return_type()) get_long(); } |
duke@435 | 782 | inline void do_float() { if (!is_return_type()) get_float(); } |
duke@435 | 783 | inline void do_double() { if (!is_return_type()) get_double(); } |
duke@435 | 784 | inline void do_object(int begin, int end) { if (!is_return_type()) get_object(); } |
duke@435 | 785 | inline void do_array(int begin, int end) { if (!is_return_type()) get_object(); } // do_array uses get_object -- there is no get_array |
duke@435 | 786 | inline void do_void() { } |
duke@435 | 787 | |
duke@435 | 788 | JavaCallArguments* arguments() { return _arguments; } |
duke@435 | 789 | void push_receiver(Handle h) { _arguments->push_oop(h); } |
duke@435 | 790 | }; |
duke@435 | 791 | |
duke@435 | 792 | |
duke@435 | 793 | class JNI_ArgumentPusherVaArg : public JNI_ArgumentPusher { |
duke@435 | 794 | protected: |
duke@435 | 795 | va_list _ap; |
duke@435 | 796 | |
duke@435 | 797 | inline void get_bool() { _arguments->push_int(va_arg(_ap, jint)); } // bool is coerced to int when using va_arg |
duke@435 | 798 | inline void get_char() { _arguments->push_int(va_arg(_ap, jint)); } // char is coerced to int when using va_arg |
duke@435 | 799 | inline void get_short() { _arguments->push_int(va_arg(_ap, jint)); } // short is coerced to int when using va_arg |
duke@435 | 800 | inline void get_byte() { _arguments->push_int(va_arg(_ap, jint)); } // byte is coerced to int when using va_arg |
duke@435 | 801 | inline void get_int() { _arguments->push_int(va_arg(_ap, jint)); } |
duke@435 | 802 | |
duke@435 | 803 | // each of these paths is exercized by the various jck Call[Static,Nonvirtual,][Void,Int,..]Method[A,V,] tests |
duke@435 | 804 | |
duke@435 | 805 | inline void get_long() { _arguments->push_long(va_arg(_ap, jlong)); } |
duke@435 | 806 | inline void get_float() { _arguments->push_float((jfloat)va_arg(_ap, jdouble)); } // float is coerced to double w/ va_arg |
duke@435 | 807 | inline void get_double() { _arguments->push_double(va_arg(_ap, jdouble)); } |
duke@435 | 808 | inline void get_object() { jobject l = va_arg(_ap, jobject); |
duke@435 | 809 | _arguments->push_oop(Handle((oop *)l, false)); } |
duke@435 | 810 | |
duke@435 | 811 | inline void set_ap(va_list rap) { |
duke@435 | 812 | #ifdef va_copy |
duke@435 | 813 | va_copy(_ap, rap); |
duke@435 | 814 | #elif defined (__va_copy) |
duke@435 | 815 | __va_copy(_ap, rap); |
duke@435 | 816 | #else |
duke@435 | 817 | _ap = rap; |
duke@435 | 818 | #endif |
duke@435 | 819 | } |
duke@435 | 820 | |
duke@435 | 821 | public: |
duke@435 | 822 | JNI_ArgumentPusherVaArg(Thread *thread, symbolOop signature, va_list rap) |
duke@435 | 823 | : JNI_ArgumentPusher(thread, signature) { |
duke@435 | 824 | set_ap(rap); |
duke@435 | 825 | } |
duke@435 | 826 | JNI_ArgumentPusherVaArg(Thread *thread, jmethodID method_id, va_list rap) |
duke@435 | 827 | : JNI_ArgumentPusher(thread, JNIHandles::resolve_jmethod_id(method_id)->signature()) { |
duke@435 | 828 | set_ap(rap); |
duke@435 | 829 | } |
duke@435 | 830 | |
duke@435 | 831 | // Optimized path if we have the bitvector form of signature |
duke@435 | 832 | void iterate( uint64_t fingerprint ) { |
duke@435 | 833 | if ( fingerprint == UCONST64(-1) ) SignatureIterator::iterate();// Must be too many arguments |
duke@435 | 834 | else { |
duke@435 | 835 | _return_type = (BasicType)((fingerprint >> static_feature_size) & |
duke@435 | 836 | result_feature_mask); |
duke@435 | 837 | |
duke@435 | 838 | assert(fingerprint, "Fingerprint should not be 0"); |
duke@435 | 839 | fingerprint = fingerprint >> (static_feature_size + result_feature_size); |
duke@435 | 840 | while ( 1 ) { |
duke@435 | 841 | switch ( fingerprint & parameter_feature_mask ) { |
duke@435 | 842 | case bool_parm: |
duke@435 | 843 | case char_parm: |
duke@435 | 844 | case short_parm: |
duke@435 | 845 | case byte_parm: |
duke@435 | 846 | case int_parm: |
duke@435 | 847 | get_int(); |
duke@435 | 848 | break; |
duke@435 | 849 | case obj_parm: |
duke@435 | 850 | get_object(); |
duke@435 | 851 | break; |
duke@435 | 852 | case long_parm: |
duke@435 | 853 | get_long(); |
duke@435 | 854 | break; |
duke@435 | 855 | case float_parm: |
duke@435 | 856 | get_float(); |
duke@435 | 857 | break; |
duke@435 | 858 | case double_parm: |
duke@435 | 859 | get_double(); |
duke@435 | 860 | break; |
duke@435 | 861 | case done_parm: |
duke@435 | 862 | return; |
duke@435 | 863 | break; |
duke@435 | 864 | default: |
duke@435 | 865 | ShouldNotReachHere(); |
duke@435 | 866 | break; |
duke@435 | 867 | } |
duke@435 | 868 | fingerprint >>= parameter_feature_size; |
duke@435 | 869 | } |
duke@435 | 870 | } |
duke@435 | 871 | } |
duke@435 | 872 | }; |
duke@435 | 873 | |
duke@435 | 874 | |
duke@435 | 875 | class JNI_ArgumentPusherArray : public JNI_ArgumentPusher { |
duke@435 | 876 | protected: |
duke@435 | 877 | const jvalue *_ap; |
duke@435 | 878 | |
duke@435 | 879 | inline void get_bool() { _arguments->push_int((jint)(_ap++)->z); } |
duke@435 | 880 | inline void get_char() { _arguments->push_int((jint)(_ap++)->c); } |
duke@435 | 881 | inline void get_short() { _arguments->push_int((jint)(_ap++)->s); } |
duke@435 | 882 | inline void get_byte() { _arguments->push_int((jint)(_ap++)->b); } |
duke@435 | 883 | inline void get_int() { _arguments->push_int((jint)(_ap++)->i); } |
duke@435 | 884 | |
duke@435 | 885 | inline void get_long() { _arguments->push_long((_ap++)->j); } |
duke@435 | 886 | inline void get_float() { _arguments->push_float((_ap++)->f); } |
duke@435 | 887 | inline void get_double() { _arguments->push_double((_ap++)->d);} |
duke@435 | 888 | inline void get_object() { _arguments->push_oop(Handle((oop *)(_ap++)->l, false)); } |
duke@435 | 889 | |
duke@435 | 890 | inline void set_ap(const jvalue *rap) { _ap = rap; } |
duke@435 | 891 | |
duke@435 | 892 | public: |
duke@435 | 893 | JNI_ArgumentPusherArray(Thread *thread, symbolOop signature, const jvalue *rap) |
duke@435 | 894 | : JNI_ArgumentPusher(thread, signature) { |
duke@435 | 895 | set_ap(rap); |
duke@435 | 896 | } |
duke@435 | 897 | JNI_ArgumentPusherArray(Thread *thread, jmethodID method_id, const jvalue *rap) |
duke@435 | 898 | : JNI_ArgumentPusher(thread, JNIHandles::resolve_jmethod_id(method_id)->signature()) { |
duke@435 | 899 | set_ap(rap); |
duke@435 | 900 | } |
duke@435 | 901 | |
duke@435 | 902 | // Optimized path if we have the bitvector form of signature |
duke@435 | 903 | void iterate( uint64_t fingerprint ) { |
duke@435 | 904 | if ( fingerprint == UCONST64(-1) ) SignatureIterator::iterate(); // Must be too many arguments |
duke@435 | 905 | else { |
duke@435 | 906 | _return_type = (BasicType)((fingerprint >> static_feature_size) & |
duke@435 | 907 | result_feature_mask); |
duke@435 | 908 | assert(fingerprint, "Fingerprint should not be 0"); |
duke@435 | 909 | fingerprint = fingerprint >> (static_feature_size + result_feature_size); |
duke@435 | 910 | while ( 1 ) { |
duke@435 | 911 | switch ( fingerprint & parameter_feature_mask ) { |
duke@435 | 912 | case bool_parm: |
duke@435 | 913 | get_bool(); |
duke@435 | 914 | break; |
duke@435 | 915 | case char_parm: |
duke@435 | 916 | get_char(); |
duke@435 | 917 | break; |
duke@435 | 918 | case short_parm: |
duke@435 | 919 | get_short(); |
duke@435 | 920 | break; |
duke@435 | 921 | case byte_parm: |
duke@435 | 922 | get_byte(); |
duke@435 | 923 | break; |
duke@435 | 924 | case int_parm: |
duke@435 | 925 | get_int(); |
duke@435 | 926 | break; |
duke@435 | 927 | case obj_parm: |
duke@435 | 928 | get_object(); |
duke@435 | 929 | break; |
duke@435 | 930 | case long_parm: |
duke@435 | 931 | get_long(); |
duke@435 | 932 | break; |
duke@435 | 933 | case float_parm: |
duke@435 | 934 | get_float(); |
duke@435 | 935 | break; |
duke@435 | 936 | case double_parm: |
duke@435 | 937 | get_double(); |
duke@435 | 938 | break; |
duke@435 | 939 | case done_parm: |
duke@435 | 940 | return; |
duke@435 | 941 | break; |
duke@435 | 942 | default: |
duke@435 | 943 | ShouldNotReachHere(); |
duke@435 | 944 | break; |
duke@435 | 945 | } |
duke@435 | 946 | fingerprint >>= parameter_feature_size; |
duke@435 | 947 | } |
duke@435 | 948 | } |
duke@435 | 949 | } |
duke@435 | 950 | }; |
duke@435 | 951 | |
duke@435 | 952 | |
duke@435 | 953 | enum JNICallType { |
duke@435 | 954 | JNI_STATIC, |
duke@435 | 955 | JNI_VIRTUAL, |
duke@435 | 956 | JNI_NONVIRTUAL |
duke@435 | 957 | }; |
duke@435 | 958 | |
duke@435 | 959 | static methodHandle jni_resolve_interface_call(Handle recv, methodHandle method, TRAPS) { |
duke@435 | 960 | assert(!method.is_null() , "method should not be null"); |
duke@435 | 961 | |
duke@435 | 962 | KlassHandle recv_klass; // Default to NULL (use of ?: can confuse gcc) |
duke@435 | 963 | if (recv.not_null()) recv_klass = KlassHandle(THREAD, recv->klass()); |
duke@435 | 964 | KlassHandle spec_klass (THREAD, method->method_holder()); |
duke@435 | 965 | symbolHandle name (THREAD, method->name()); |
duke@435 | 966 | symbolHandle signature (THREAD, method->signature()); |
duke@435 | 967 | CallInfo info; |
duke@435 | 968 | LinkResolver::resolve_interface_call(info, recv, recv_klass, spec_klass, name, signature, KlassHandle(), false, true, CHECK_(methodHandle())); |
duke@435 | 969 | return info.selected_method(); |
duke@435 | 970 | } |
duke@435 | 971 | |
duke@435 | 972 | static methodHandle jni_resolve_virtual_call(Handle recv, methodHandle method, TRAPS) { |
duke@435 | 973 | assert(!method.is_null() , "method should not be null"); |
duke@435 | 974 | |
duke@435 | 975 | KlassHandle recv_klass; // Default to NULL (use of ?: can confuse gcc) |
duke@435 | 976 | if (recv.not_null()) recv_klass = KlassHandle(THREAD, recv->klass()); |
duke@435 | 977 | KlassHandle spec_klass (THREAD, method->method_holder()); |
duke@435 | 978 | symbolHandle name (THREAD, method->name()); |
duke@435 | 979 | symbolHandle signature (THREAD, method->signature()); |
duke@435 | 980 | CallInfo info; |
duke@435 | 981 | LinkResolver::resolve_virtual_call(info, recv, recv_klass, spec_klass, name, signature, KlassHandle(), false, true, CHECK_(methodHandle())); |
duke@435 | 982 | return info.selected_method(); |
duke@435 | 983 | } |
duke@435 | 984 | |
duke@435 | 985 | |
duke@435 | 986 | |
duke@435 | 987 | static void jni_invoke_static(JNIEnv *env, JavaValue* result, jobject receiver, JNICallType call_type, jmethodID method_id, JNI_ArgumentPusher *args, TRAPS) { |
duke@435 | 988 | methodHandle method(THREAD, JNIHandles::resolve_jmethod_id(method_id)); |
duke@435 | 989 | |
duke@435 | 990 | // Create object to hold arguments for the JavaCall, and associate it with |
duke@435 | 991 | // the jni parser |
duke@435 | 992 | ResourceMark rm(THREAD); |
duke@435 | 993 | int number_of_parameters = method->size_of_parameters(); |
duke@435 | 994 | JavaCallArguments java_args(number_of_parameters); |
duke@435 | 995 | args->set_java_argument_object(&java_args); |
duke@435 | 996 | |
duke@435 | 997 | assert(method->is_static(), "method should be static"); |
duke@435 | 998 | |
duke@435 | 999 | // Fill out JavaCallArguments object |
duke@435 | 1000 | args->iterate( Fingerprinter(THREAD, method).fingerprint() ); |
duke@435 | 1001 | // Initialize result type |
duke@435 | 1002 | result->set_type(args->get_ret_type()); |
duke@435 | 1003 | |
duke@435 | 1004 | // Invoke the method. Result is returned as oop. |
duke@435 | 1005 | JavaCalls::call(result, method, &java_args, CHECK); |
duke@435 | 1006 | |
duke@435 | 1007 | // Convert result |
duke@435 | 1008 | if (result->get_type() == T_OBJECT || result->get_type() == T_ARRAY) { |
duke@435 | 1009 | result->set_jobject(JNIHandles::make_local(env, (oop) result->get_jobject())); |
duke@435 | 1010 | } |
duke@435 | 1011 | } |
duke@435 | 1012 | |
duke@435 | 1013 | |
duke@435 | 1014 | static void jni_invoke_nonstatic(JNIEnv *env, JavaValue* result, jobject receiver, JNICallType call_type, jmethodID method_id, JNI_ArgumentPusher *args, TRAPS) { |
duke@435 | 1015 | oop recv = JNIHandles::resolve(receiver); |
duke@435 | 1016 | if (recv == NULL) { |
duke@435 | 1017 | THROW(vmSymbols::java_lang_NullPointerException()); |
duke@435 | 1018 | } |
duke@435 | 1019 | Handle h_recv(THREAD, recv); |
duke@435 | 1020 | |
duke@435 | 1021 | int number_of_parameters; |
duke@435 | 1022 | methodOop selected_method; |
duke@435 | 1023 | { |
duke@435 | 1024 | methodOop m = JNIHandles::resolve_jmethod_id(method_id); |
duke@435 | 1025 | number_of_parameters = m->size_of_parameters(); |
duke@435 | 1026 | klassOop holder = m->method_holder(); |
duke@435 | 1027 | if (!(Klass::cast(holder))->is_interface()) { |
duke@435 | 1028 | // non-interface call -- for that little speed boost, don't handlize |
duke@435 | 1029 | debug_only(No_Safepoint_Verifier nosafepoint;) |
duke@435 | 1030 | if (call_type == JNI_VIRTUAL) { |
duke@435 | 1031 | // jni_GetMethodID makes sure class is linked and initialized |
duke@435 | 1032 | // so m should have a valid vtable index. |
duke@435 | 1033 | int vtbl_index = m->vtable_index(); |
duke@435 | 1034 | if (vtbl_index != methodOopDesc::nonvirtual_vtable_index) { |
duke@435 | 1035 | klassOop k = h_recv->klass(); |
duke@435 | 1036 | // k might be an arrayKlassOop but all vtables start at |
duke@435 | 1037 | // the same place. The cast is to avoid virtual call and assertion. |
duke@435 | 1038 | instanceKlass *ik = (instanceKlass*)k->klass_part(); |
duke@435 | 1039 | selected_method = ik->method_at_vtable(vtbl_index); |
duke@435 | 1040 | } else { |
duke@435 | 1041 | // final method |
duke@435 | 1042 | selected_method = m; |
duke@435 | 1043 | } |
duke@435 | 1044 | } else { |
duke@435 | 1045 | // JNI_NONVIRTUAL call |
duke@435 | 1046 | selected_method = m; |
duke@435 | 1047 | } |
duke@435 | 1048 | } else { |
duke@435 | 1049 | // interface call |
duke@435 | 1050 | KlassHandle h_holder(THREAD, holder); |
duke@435 | 1051 | |
duke@435 | 1052 | int itbl_index = m->cached_itable_index(); |
duke@435 | 1053 | if (itbl_index == -1) { |
duke@435 | 1054 | itbl_index = klassItable::compute_itable_index(m); |
duke@435 | 1055 | m->set_cached_itable_index(itbl_index); |
duke@435 | 1056 | // the above may have grabbed a lock, 'm' and anything non-handlized can't be used again |
duke@435 | 1057 | } |
duke@435 | 1058 | klassOop k = h_recv->klass(); |
duke@435 | 1059 | selected_method = instanceKlass::cast(k)->method_at_itable(h_holder(), itbl_index, CHECK); |
duke@435 | 1060 | } |
duke@435 | 1061 | } |
duke@435 | 1062 | |
duke@435 | 1063 | methodHandle method(THREAD, selected_method); |
duke@435 | 1064 | |
duke@435 | 1065 | // Create object to hold arguments for the JavaCall, and associate it with |
duke@435 | 1066 | // the jni parser |
duke@435 | 1067 | ResourceMark rm(THREAD); |
duke@435 | 1068 | JavaCallArguments java_args(number_of_parameters); |
duke@435 | 1069 | args->set_java_argument_object(&java_args); |
duke@435 | 1070 | |
duke@435 | 1071 | // handle arguments |
duke@435 | 1072 | assert(!method->is_static(), "method should not be static"); |
duke@435 | 1073 | args->push_receiver(h_recv); // Push jobject handle |
duke@435 | 1074 | |
duke@435 | 1075 | // Fill out JavaCallArguments object |
duke@435 | 1076 | args->iterate( Fingerprinter(THREAD, method).fingerprint() ); |
duke@435 | 1077 | // Initialize result type |
duke@435 | 1078 | result->set_type(args->get_ret_type()); |
duke@435 | 1079 | |
duke@435 | 1080 | // Invoke the method. Result is returned as oop. |
duke@435 | 1081 | JavaCalls::call(result, method, &java_args, CHECK); |
duke@435 | 1082 | |
duke@435 | 1083 | // Convert result |
duke@435 | 1084 | if (result->get_type() == T_OBJECT || result->get_type() == T_ARRAY) { |
duke@435 | 1085 | result->set_jobject(JNIHandles::make_local(env, (oop) result->get_jobject())); |
duke@435 | 1086 | } |
duke@435 | 1087 | } |
duke@435 | 1088 | |
duke@435 | 1089 | |
duke@435 | 1090 | static instanceOop alloc_object(jclass clazz, TRAPS) { |
duke@435 | 1091 | KlassHandle k(THREAD, java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(clazz))); |
duke@435 | 1092 | Klass::cast(k())->check_valid_for_instantiation(false, CHECK_NULL); |
duke@435 | 1093 | instanceKlass::cast(k())->initialize(CHECK_NULL); |
duke@435 | 1094 | instanceOop ih = instanceKlass::cast(k())->allocate_instance(THREAD); |
duke@435 | 1095 | return ih; |
duke@435 | 1096 | } |
duke@435 | 1097 | |
duke@435 | 1098 | DT_RETURN_MARK_DECL(AllocObject, jobject); |
duke@435 | 1099 | |
duke@435 | 1100 | JNI_ENTRY(jobject, jni_AllocObject(JNIEnv *env, jclass clazz)) |
duke@435 | 1101 | JNIWrapper("AllocObject"); |
duke@435 | 1102 | |
duke@435 | 1103 | DTRACE_PROBE2(hotspot_jni, AllocObject__entry, env, clazz); |
duke@435 | 1104 | jobject ret = NULL; |
duke@435 | 1105 | DT_RETURN_MARK(AllocObject, jobject, (const jobject&)ret); |
duke@435 | 1106 | |
duke@435 | 1107 | instanceOop i = alloc_object(clazz, CHECK_NULL); |
duke@435 | 1108 | ret = JNIHandles::make_local(env, i); |
duke@435 | 1109 | return ret; |
duke@435 | 1110 | JNI_END |
duke@435 | 1111 | |
duke@435 | 1112 | DT_RETURN_MARK_DECL(NewObjectA, jobject); |
duke@435 | 1113 | |
duke@435 | 1114 | JNI_ENTRY(jobject, jni_NewObjectA(JNIEnv *env, jclass clazz, jmethodID methodID, const jvalue *args)) |
duke@435 | 1115 | JNIWrapper("NewObjectA"); |
duke@435 | 1116 | DTRACE_PROBE3(hotspot_jni, NewObjectA__entry, env, clazz, methodID); |
duke@435 | 1117 | jobject obj = NULL; |
duke@435 | 1118 | DT_RETURN_MARK(NewObjectA, jobject, (const jobject)obj); |
duke@435 | 1119 | |
duke@435 | 1120 | instanceOop i = alloc_object(clazz, CHECK_NULL); |
duke@435 | 1121 | obj = JNIHandles::make_local(env, i); |
duke@435 | 1122 | JavaValue jvalue(T_VOID); |
duke@435 | 1123 | JNI_ArgumentPusherArray ap(THREAD, methodID, args); |
duke@435 | 1124 | jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK_NULL); |
duke@435 | 1125 | return obj; |
duke@435 | 1126 | JNI_END |
duke@435 | 1127 | |
duke@435 | 1128 | DT_RETURN_MARK_DECL(NewObjectV, jobject); |
duke@435 | 1129 | |
duke@435 | 1130 | JNI_ENTRY(jobject, jni_NewObjectV(JNIEnv *env, jclass clazz, jmethodID methodID, va_list args)) |
duke@435 | 1131 | JNIWrapper("NewObjectV"); |
duke@435 | 1132 | DTRACE_PROBE3(hotspot_jni, NewObjectV__entry, env, clazz, methodID); |
duke@435 | 1133 | jobject obj = NULL; |
duke@435 | 1134 | DT_RETURN_MARK(NewObjectV, jobject, (const jobject&)obj); |
duke@435 | 1135 | |
duke@435 | 1136 | instanceOop i = alloc_object(clazz, CHECK_NULL); |
duke@435 | 1137 | obj = JNIHandles::make_local(env, i); |
duke@435 | 1138 | JavaValue jvalue(T_VOID); |
duke@435 | 1139 | JNI_ArgumentPusherVaArg ap(THREAD, methodID, args); |
duke@435 | 1140 | jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK_NULL); |
duke@435 | 1141 | return obj; |
duke@435 | 1142 | JNI_END |
duke@435 | 1143 | |
duke@435 | 1144 | DT_RETURN_MARK_DECL(NewObject, jobject); |
duke@435 | 1145 | |
duke@435 | 1146 | JNI_ENTRY(jobject, jni_NewObject(JNIEnv *env, jclass clazz, jmethodID methodID, ...)) |
duke@435 | 1147 | JNIWrapper("NewObject"); |
duke@435 | 1148 | DTRACE_PROBE3(hotspot_jni, NewObject__entry, env, clazz, methodID); |
duke@435 | 1149 | jobject obj = NULL; |
duke@435 | 1150 | DT_RETURN_MARK(NewObject, jobject, (const jobject&)obj); |
duke@435 | 1151 | |
duke@435 | 1152 | instanceOop i = alloc_object(clazz, CHECK_NULL); |
duke@435 | 1153 | obj = JNIHandles::make_local(env, i); |
duke@435 | 1154 | va_list args; |
duke@435 | 1155 | va_start(args, methodID); |
duke@435 | 1156 | JavaValue jvalue(T_VOID); |
duke@435 | 1157 | JNI_ArgumentPusherVaArg ap(THREAD, methodID, args); |
duke@435 | 1158 | jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK_NULL); |
duke@435 | 1159 | va_end(args); |
duke@435 | 1160 | return obj; |
duke@435 | 1161 | JNI_END |
duke@435 | 1162 | |
duke@435 | 1163 | |
duke@435 | 1164 | JNI_ENTRY(jclass, jni_GetObjectClass(JNIEnv *env, jobject obj)) |
duke@435 | 1165 | JNIWrapper("GetObjectClass"); |
duke@435 | 1166 | DTRACE_PROBE2(hotspot_jni, GetObjectClass__entry, env, obj); |
duke@435 | 1167 | klassOop k = JNIHandles::resolve_non_null(obj)->klass(); |
duke@435 | 1168 | jclass ret = |
duke@435 | 1169 | (jclass) JNIHandles::make_local(env, Klass::cast(k)->java_mirror()); |
duke@435 | 1170 | DTRACE_PROBE1(hotspot_jni, GetObjectClass__return, ret); |
duke@435 | 1171 | return ret; |
duke@435 | 1172 | JNI_END |
duke@435 | 1173 | |
duke@435 | 1174 | JNI_QUICK_ENTRY(jboolean, jni_IsInstanceOf(JNIEnv *env, jobject obj, jclass clazz)) |
duke@435 | 1175 | JNIWrapper("IsInstanceOf"); |
duke@435 | 1176 | DTRACE_PROBE3(hotspot_jni, IsInstanceOf__entry, env, obj, clazz); |
duke@435 | 1177 | jboolean ret = JNI_TRUE; |
duke@435 | 1178 | if (obj != NULL) { |
duke@435 | 1179 | ret = JNI_FALSE; |
duke@435 | 1180 | klassOop k = java_lang_Class::as_klassOop( |
duke@435 | 1181 | JNIHandles::resolve_non_null(clazz)); |
duke@435 | 1182 | if (k != NULL) { |
duke@435 | 1183 | ret = JNIHandles::resolve_non_null(obj)->is_a(k) ? JNI_TRUE : JNI_FALSE; |
duke@435 | 1184 | } |
duke@435 | 1185 | } |
duke@435 | 1186 | DTRACE_PROBE1(hotspot_jni, IsInstanceOf__return, ret); |
duke@435 | 1187 | return ret; |
duke@435 | 1188 | JNI_END |
duke@435 | 1189 | |
duke@435 | 1190 | |
duke@435 | 1191 | static jmethodID get_method_id(JNIEnv *env, jclass clazz, const char *name_str, |
duke@435 | 1192 | const char *sig, bool is_static, TRAPS) { |
duke@435 | 1193 | // %%%% This code should probably just call into a method in the LinkResolver |
duke@435 | 1194 | // |
duke@435 | 1195 | // The class should have been loaded (we have an instance of the class |
duke@435 | 1196 | // passed in) so the method and signature should already be in the symbol |
duke@435 | 1197 | // table. If they're not there, the method doesn't exist. |
duke@435 | 1198 | symbolHandle signature = |
duke@435 | 1199 | symbolHandle(THREAD, SymbolTable::probe(sig, (int)strlen(sig))); |
duke@435 | 1200 | symbolHandle name; |
duke@435 | 1201 | if (name_str == NULL) { |
duke@435 | 1202 | name = vmSymbolHandles::object_initializer_name(); |
duke@435 | 1203 | } else { |
duke@435 | 1204 | name = symbolHandle(THREAD, |
duke@435 | 1205 | SymbolTable::probe(name_str, (int)strlen(name_str))); |
duke@435 | 1206 | } |
duke@435 | 1207 | if (name.is_null() || signature.is_null()) { |
duke@435 | 1208 | THROW_MSG_0(vmSymbols::java_lang_NoSuchMethodError(), name_str); |
duke@435 | 1209 | } |
duke@435 | 1210 | |
duke@435 | 1211 | // Throw a NoSuchMethodError exception if we have an instance of a |
duke@435 | 1212 | // primitive java.lang.Class |
duke@435 | 1213 | if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(clazz))) { |
duke@435 | 1214 | THROW_MSG_0(vmSymbols::java_lang_NoSuchMethodError(), name_str); |
duke@435 | 1215 | } |
duke@435 | 1216 | |
duke@435 | 1217 | KlassHandle klass(THREAD, |
duke@435 | 1218 | java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(clazz))); |
duke@435 | 1219 | |
duke@435 | 1220 | // Make sure class is linked and initialized before handing id's out to |
duke@435 | 1221 | // methodOops. |
duke@435 | 1222 | Klass::cast(klass())->initialize(CHECK_NULL); |
duke@435 | 1223 | |
duke@435 | 1224 | methodOop m; |
duke@435 | 1225 | if (name() == vmSymbols::object_initializer_name() || |
duke@435 | 1226 | name() == vmSymbols::class_initializer_name()) { |
duke@435 | 1227 | // Never search superclasses for constructors |
duke@435 | 1228 | if (klass->oop_is_instance()) { |
duke@435 | 1229 | m = instanceKlass::cast(klass())->find_method(name(), signature()); |
duke@435 | 1230 | } else { |
duke@435 | 1231 | m = NULL; |
duke@435 | 1232 | } |
duke@435 | 1233 | } else { |
duke@435 | 1234 | m = klass->lookup_method(name(), signature()); |
duke@435 | 1235 | // Look up interfaces |
duke@435 | 1236 | if (m == NULL && klass->oop_is_instance()) { |
duke@435 | 1237 | m = instanceKlass::cast(klass())->lookup_method_in_all_interfaces(name(), |
duke@435 | 1238 | signature()); |
duke@435 | 1239 | } |
duke@435 | 1240 | } |
duke@435 | 1241 | if (m == NULL || (m->is_static() != is_static)) { |
duke@435 | 1242 | THROW_MSG_0(vmSymbols::java_lang_NoSuchMethodError(), name_str); |
duke@435 | 1243 | } |
duke@435 | 1244 | return m->jmethod_id(); |
duke@435 | 1245 | } |
duke@435 | 1246 | |
duke@435 | 1247 | |
duke@435 | 1248 | JNI_ENTRY(jmethodID, jni_GetMethodID(JNIEnv *env, jclass clazz, |
duke@435 | 1249 | const char *name, const char *sig)) |
duke@435 | 1250 | JNIWrapper("GetMethodID"); |
duke@435 | 1251 | DTRACE_PROBE4(hotspot_jni, GetMethodID__entry, env, clazz, name, sig); |
duke@435 | 1252 | jmethodID ret = get_method_id(env, clazz, name, sig, false, thread); |
duke@435 | 1253 | DTRACE_PROBE1(hotspot_jni, GetMethodID__return, ret); |
duke@435 | 1254 | return ret; |
duke@435 | 1255 | JNI_END |
duke@435 | 1256 | |
duke@435 | 1257 | |
duke@435 | 1258 | JNI_ENTRY(jmethodID, jni_GetStaticMethodID(JNIEnv *env, jclass clazz, |
duke@435 | 1259 | const char *name, const char *sig)) |
duke@435 | 1260 | JNIWrapper("GetStaticMethodID"); |
duke@435 | 1261 | DTRACE_PROBE4(hotspot_jni, GetStaticMethodID__entry, env, clazz, name, sig); |
duke@435 | 1262 | jmethodID ret = get_method_id(env, clazz, name, sig, true, thread); |
duke@435 | 1263 | DTRACE_PROBE1(hotspot_jni, GetStaticMethodID__return, ret); |
duke@435 | 1264 | return ret; |
duke@435 | 1265 | JNI_END |
duke@435 | 1266 | |
duke@435 | 1267 | |
duke@435 | 1268 | |
duke@435 | 1269 | // |
duke@435 | 1270 | // Calling Methods |
duke@435 | 1271 | // |
duke@435 | 1272 | |
duke@435 | 1273 | |
duke@435 | 1274 | #define DEFINE_CALLMETHOD(ResultType, Result, Tag) \ |
duke@435 | 1275 | \ |
duke@435 | 1276 | DT_RETURN_MARK_DECL_FOR(Result, Call##Result##Method, ResultType);\ |
duke@435 | 1277 | DT_RETURN_MARK_DECL_FOR(Result, Call##Result##MethodV, ResultType);\ |
duke@435 | 1278 | DT_RETURN_MARK_DECL_FOR(Result, Call##Result##MethodA, ResultType);\ |
duke@435 | 1279 | \ |
duke@435 | 1280 | JNI_ENTRY(ResultType, \ |
duke@435 | 1281 | jni_Call##Result##Method(JNIEnv *env, jobject obj, jmethodID methodID, ...)) \ |
duke@435 | 1282 | JNIWrapper("Call" XSTR(Result) "Method"); \ |
duke@435 | 1283 | \ |
duke@435 | 1284 | DTRACE_PROBE3(hotspot_jni, Call##Result##Method__entry, env, obj, methodID);\ |
duke@435 | 1285 | ResultType ret = 0;\ |
duke@435 | 1286 | DT_RETURN_MARK_FOR(Result, Call##Result##Method, ResultType, \ |
duke@435 | 1287 | (const ResultType&)ret);\ |
duke@435 | 1288 | \ |
duke@435 | 1289 | va_list args; \ |
duke@435 | 1290 | va_start(args, methodID); \ |
duke@435 | 1291 | JavaValue jvalue(Tag); \ |
duke@435 | 1292 | JNI_ArgumentPusherVaArg ap(THREAD, methodID, args); \ |
duke@435 | 1293 | jni_invoke_nonstatic(env, &jvalue, obj, JNI_VIRTUAL, methodID, &ap, CHECK_0); \ |
duke@435 | 1294 | va_end(args); \ |
duke@435 | 1295 | ret = jvalue.get_##ResultType(); \ |
duke@435 | 1296 | return ret;\ |
duke@435 | 1297 | JNI_END \ |
duke@435 | 1298 | \ |
duke@435 | 1299 | \ |
duke@435 | 1300 | JNI_ENTRY(ResultType, \ |
duke@435 | 1301 | jni_Call##Result##MethodV(JNIEnv *env, jobject obj, jmethodID methodID, va_list args)) \ |
duke@435 | 1302 | JNIWrapper("Call" XSTR(Result) "MethodV"); \ |
duke@435 | 1303 | \ |
duke@435 | 1304 | DTRACE_PROBE3(hotspot_jni, Call##Result##MethodV__entry, env, obj, methodID);\ |
duke@435 | 1305 | ResultType ret = 0;\ |
duke@435 | 1306 | DT_RETURN_MARK_FOR(Result, Call##Result##MethodV, ResultType, \ |
duke@435 | 1307 | (const ResultType&)ret);\ |
duke@435 | 1308 | \ |
duke@435 | 1309 | JavaValue jvalue(Tag); \ |
duke@435 | 1310 | JNI_ArgumentPusherVaArg ap(THREAD, methodID, args); \ |
duke@435 | 1311 | jni_invoke_nonstatic(env, &jvalue, obj, JNI_VIRTUAL, methodID, &ap, CHECK_0); \ |
duke@435 | 1312 | ret = jvalue.get_##ResultType(); \ |
duke@435 | 1313 | return ret;\ |
duke@435 | 1314 | JNI_END \ |
duke@435 | 1315 | \ |
duke@435 | 1316 | \ |
duke@435 | 1317 | JNI_ENTRY(ResultType, \ |
duke@435 | 1318 | jni_Call##Result##MethodA(JNIEnv *env, jobject obj, jmethodID methodID, const jvalue *args)) \ |
duke@435 | 1319 | JNIWrapper("Call" XSTR(Result) "MethodA"); \ |
duke@435 | 1320 | DTRACE_PROBE3(hotspot_jni, Call##Result##MethodA__entry, env, obj, methodID);\ |
duke@435 | 1321 | ResultType ret = 0;\ |
duke@435 | 1322 | DT_RETURN_MARK_FOR(Result, Call##Result##MethodA, ResultType, \ |
duke@435 | 1323 | (const ResultType&)ret);\ |
duke@435 | 1324 | \ |
duke@435 | 1325 | JavaValue jvalue(Tag); \ |
duke@435 | 1326 | JNI_ArgumentPusherArray ap(THREAD, methodID, args); \ |
duke@435 | 1327 | jni_invoke_nonstatic(env, &jvalue, obj, JNI_VIRTUAL, methodID, &ap, CHECK_0); \ |
duke@435 | 1328 | ret = jvalue.get_##ResultType(); \ |
duke@435 | 1329 | return ret;\ |
duke@435 | 1330 | JNI_END |
duke@435 | 1331 | |
duke@435 | 1332 | // the runtime type of subword integral basic types is integer |
duke@435 | 1333 | DEFINE_CALLMETHOD(jboolean, Boolean, T_BOOLEAN) |
duke@435 | 1334 | DEFINE_CALLMETHOD(jbyte, Byte, T_BYTE) |
duke@435 | 1335 | DEFINE_CALLMETHOD(jchar, Char, T_CHAR) |
duke@435 | 1336 | DEFINE_CALLMETHOD(jshort, Short, T_SHORT) |
duke@435 | 1337 | |
duke@435 | 1338 | DEFINE_CALLMETHOD(jobject, Object, T_OBJECT) |
duke@435 | 1339 | DEFINE_CALLMETHOD(jint, Int, T_INT) |
duke@435 | 1340 | DEFINE_CALLMETHOD(jlong, Long, T_LONG) |
duke@435 | 1341 | DEFINE_CALLMETHOD(jfloat, Float, T_FLOAT) |
duke@435 | 1342 | DEFINE_CALLMETHOD(jdouble, Double, T_DOUBLE) |
duke@435 | 1343 | |
duke@435 | 1344 | DT_VOID_RETURN_MARK_DECL(CallVoidMethod); |
duke@435 | 1345 | DT_VOID_RETURN_MARK_DECL(CallVoidMethodV); |
duke@435 | 1346 | DT_VOID_RETURN_MARK_DECL(CallVoidMethodA); |
duke@435 | 1347 | |
duke@435 | 1348 | JNI_ENTRY(void, jni_CallVoidMethod(JNIEnv *env, jobject obj, jmethodID methodID, ...)) |
duke@435 | 1349 | JNIWrapper("CallVoidMethod"); |
duke@435 | 1350 | DTRACE_PROBE3(hotspot_jni, CallVoidMethod__entry, env, obj, methodID); |
duke@435 | 1351 | DT_VOID_RETURN_MARK(CallVoidMethod); |
duke@435 | 1352 | |
duke@435 | 1353 | va_list args; |
duke@435 | 1354 | va_start(args, methodID); |
duke@435 | 1355 | JavaValue jvalue(T_VOID); |
duke@435 | 1356 | JNI_ArgumentPusherVaArg ap(THREAD, methodID, args); |
duke@435 | 1357 | jni_invoke_nonstatic(env, &jvalue, obj, JNI_VIRTUAL, methodID, &ap, CHECK); |
duke@435 | 1358 | va_end(args); |
duke@435 | 1359 | JNI_END |
duke@435 | 1360 | |
duke@435 | 1361 | |
duke@435 | 1362 | JNI_ENTRY(void, jni_CallVoidMethodV(JNIEnv *env, jobject obj, jmethodID methodID, va_list args)) |
duke@435 | 1363 | JNIWrapper("CallVoidMethodV"); |
duke@435 | 1364 | DTRACE_PROBE3(hotspot_jni, CallVoidMethodV__entry, env, obj, methodID); |
duke@435 | 1365 | DT_VOID_RETURN_MARK(CallVoidMethodV); |
duke@435 | 1366 | |
duke@435 | 1367 | JavaValue jvalue(T_VOID); |
duke@435 | 1368 | JNI_ArgumentPusherVaArg ap(THREAD, methodID, args); |
duke@435 | 1369 | jni_invoke_nonstatic(env, &jvalue, obj, JNI_VIRTUAL, methodID, &ap, CHECK); |
duke@435 | 1370 | JNI_END |
duke@435 | 1371 | |
duke@435 | 1372 | |
duke@435 | 1373 | JNI_ENTRY(void, jni_CallVoidMethodA(JNIEnv *env, jobject obj, jmethodID methodID, const jvalue *args)) |
duke@435 | 1374 | JNIWrapper("CallVoidMethodA"); |
duke@435 | 1375 | DTRACE_PROBE3(hotspot_jni, CallVoidMethodA__entry, env, obj, methodID); |
duke@435 | 1376 | DT_VOID_RETURN_MARK(CallVoidMethodA); |
duke@435 | 1377 | |
duke@435 | 1378 | JavaValue jvalue(T_VOID); |
duke@435 | 1379 | JNI_ArgumentPusherArray ap(THREAD, methodID, args); |
duke@435 | 1380 | jni_invoke_nonstatic(env, &jvalue, obj, JNI_VIRTUAL, methodID, &ap, CHECK); |
duke@435 | 1381 | JNI_END |
duke@435 | 1382 | |
duke@435 | 1383 | |
duke@435 | 1384 | #define DEFINE_CALLNONVIRTUALMETHOD(ResultType, Result, Tag) \ |
duke@435 | 1385 | \ |
duke@435 | 1386 | DT_RETURN_MARK_DECL_FOR(Result, CallNonvirtual##Result##Method, ResultType);\ |
duke@435 | 1387 | DT_RETURN_MARK_DECL_FOR(Result, CallNonvirtual##Result##MethodV, ResultType);\ |
duke@435 | 1388 | DT_RETURN_MARK_DECL_FOR(Result, CallNonvirtual##Result##MethodA, ResultType);\ |
duke@435 | 1389 | \ |
duke@435 | 1390 | JNI_ENTRY(ResultType, \ |
duke@435 | 1391 | jni_CallNonvirtual##Result##Method(JNIEnv *env, jobject obj, jclass cls, jmethodID methodID, ...)) \ |
duke@435 | 1392 | JNIWrapper("CallNonvitual" XSTR(Result) "Method"); \ |
duke@435 | 1393 | \ |
duke@435 | 1394 | DTRACE_PROBE4(hotspot_jni, CallNonvirtual##Result##Method__entry, env, obj, cls, methodID);\ |
duke@435 | 1395 | ResultType ret;\ |
duke@435 | 1396 | DT_RETURN_MARK_FOR(Result, CallNonvirtual##Result##Method, ResultType, \ |
duke@435 | 1397 | (const ResultType&)ret);\ |
duke@435 | 1398 | \ |
duke@435 | 1399 | va_list args; \ |
duke@435 | 1400 | va_start(args, methodID); \ |
duke@435 | 1401 | JavaValue jvalue(Tag); \ |
duke@435 | 1402 | JNI_ArgumentPusherVaArg ap(THREAD, methodID, args); \ |
duke@435 | 1403 | jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK_0); \ |
duke@435 | 1404 | va_end(args); \ |
duke@435 | 1405 | ret = jvalue.get_##ResultType(); \ |
duke@435 | 1406 | return ret;\ |
duke@435 | 1407 | JNI_END \ |
duke@435 | 1408 | \ |
duke@435 | 1409 | JNI_ENTRY(ResultType, \ |
duke@435 | 1410 | jni_CallNonvirtual##Result##MethodV(JNIEnv *env, jobject obj, jclass cls, jmethodID methodID, va_list args)) \ |
duke@435 | 1411 | JNIWrapper("CallNonvitual" XSTR(Result) "#MethodV"); \ |
duke@435 | 1412 | DTRACE_PROBE4(hotspot_jni, CallNonvirtual##Result##MethodV__entry, env, obj, cls, methodID);\ |
duke@435 | 1413 | ResultType ret;\ |
duke@435 | 1414 | DT_RETURN_MARK_FOR(Result, CallNonvirtual##Result##MethodV, ResultType, \ |
duke@435 | 1415 | (const ResultType&)ret);\ |
duke@435 | 1416 | \ |
duke@435 | 1417 | JavaValue jvalue(Tag); \ |
duke@435 | 1418 | JNI_ArgumentPusherVaArg ap(THREAD, methodID, args); \ |
duke@435 | 1419 | jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK_0); \ |
duke@435 | 1420 | ret = jvalue.get_##ResultType(); \ |
duke@435 | 1421 | return ret;\ |
duke@435 | 1422 | JNI_END \ |
duke@435 | 1423 | \ |
duke@435 | 1424 | JNI_ENTRY(ResultType, \ |
duke@435 | 1425 | jni_CallNonvirtual##Result##MethodA(JNIEnv *env, jobject obj, jclass cls, jmethodID methodID, const jvalue *args)) \ |
duke@435 | 1426 | JNIWrapper("CallNonvitual" XSTR(Result) "MethodA"); \ |
duke@435 | 1427 | DTRACE_PROBE4(hotspot_jni, CallNonvirtual##Result##MethodA__entry, env, obj, cls, methodID);\ |
duke@435 | 1428 | ResultType ret;\ |
duke@435 | 1429 | DT_RETURN_MARK_FOR(Result, CallNonvirtual##Result##MethodA, ResultType, \ |
duke@435 | 1430 | (const ResultType&)ret);\ |
duke@435 | 1431 | \ |
duke@435 | 1432 | JavaValue jvalue(Tag); \ |
duke@435 | 1433 | JNI_ArgumentPusherArray ap(THREAD, methodID, args); \ |
duke@435 | 1434 | jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK_0); \ |
duke@435 | 1435 | ret = jvalue.get_##ResultType(); \ |
duke@435 | 1436 | return ret;\ |
duke@435 | 1437 | JNI_END |
duke@435 | 1438 | |
duke@435 | 1439 | // the runtime type of subword integral basic types is integer |
duke@435 | 1440 | DEFINE_CALLNONVIRTUALMETHOD(jboolean, Boolean, T_BOOLEAN) |
duke@435 | 1441 | DEFINE_CALLNONVIRTUALMETHOD(jbyte, Byte, T_BYTE) |
duke@435 | 1442 | DEFINE_CALLNONVIRTUALMETHOD(jchar, Char, T_CHAR) |
duke@435 | 1443 | DEFINE_CALLNONVIRTUALMETHOD(jshort, Short, T_SHORT) |
duke@435 | 1444 | |
duke@435 | 1445 | DEFINE_CALLNONVIRTUALMETHOD(jobject, Object, T_OBJECT) |
duke@435 | 1446 | DEFINE_CALLNONVIRTUALMETHOD(jint, Int, T_INT) |
duke@435 | 1447 | DEFINE_CALLNONVIRTUALMETHOD(jlong, Long, T_LONG) |
duke@435 | 1448 | DEFINE_CALLNONVIRTUALMETHOD(jfloat, Float, T_FLOAT) |
duke@435 | 1449 | DEFINE_CALLNONVIRTUALMETHOD(jdouble, Double, T_DOUBLE) |
duke@435 | 1450 | |
duke@435 | 1451 | |
duke@435 | 1452 | DT_VOID_RETURN_MARK_DECL(CallNonvirtualVoidMethod); |
duke@435 | 1453 | DT_VOID_RETURN_MARK_DECL(CallNonvirtualVoidMethodV); |
duke@435 | 1454 | DT_VOID_RETURN_MARK_DECL(CallNonvirtualVoidMethodA); |
duke@435 | 1455 | |
duke@435 | 1456 | JNI_ENTRY(void, jni_CallNonvirtualVoidMethod(JNIEnv *env, jobject obj, jclass cls, jmethodID methodID, ...)) |
duke@435 | 1457 | JNIWrapper("CallNonvirtualVoidMethod"); |
duke@435 | 1458 | |
duke@435 | 1459 | DTRACE_PROBE4(hotspot_jni, CallNonvirtualVoidMethod__entry, |
duke@435 | 1460 | env, obj, cls, methodID); |
duke@435 | 1461 | DT_VOID_RETURN_MARK(CallNonvirtualVoidMethod); |
duke@435 | 1462 | |
duke@435 | 1463 | va_list args; |
duke@435 | 1464 | va_start(args, methodID); |
duke@435 | 1465 | JavaValue jvalue(T_VOID); |
duke@435 | 1466 | JNI_ArgumentPusherVaArg ap(THREAD, methodID, args); |
duke@435 | 1467 | jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK); |
duke@435 | 1468 | va_end(args); |
duke@435 | 1469 | JNI_END |
duke@435 | 1470 | |
duke@435 | 1471 | |
duke@435 | 1472 | JNI_ENTRY(void, jni_CallNonvirtualVoidMethodV(JNIEnv *env, jobject obj, jclass cls, jmethodID methodID, va_list args)) |
duke@435 | 1473 | JNIWrapper("CallNonvirtualVoidMethodV"); |
duke@435 | 1474 | |
duke@435 | 1475 | DTRACE_PROBE4(hotspot_jni, CallNonvirtualVoidMethodV__entry, |
duke@435 | 1476 | env, obj, cls, methodID); |
duke@435 | 1477 | DT_VOID_RETURN_MARK(CallNonvirtualVoidMethodV); |
duke@435 | 1478 | |
duke@435 | 1479 | JavaValue jvalue(T_VOID); |
duke@435 | 1480 | JNI_ArgumentPusherVaArg ap(THREAD, methodID, args); |
duke@435 | 1481 | jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK); |
duke@435 | 1482 | JNI_END |
duke@435 | 1483 | |
duke@435 | 1484 | |
duke@435 | 1485 | JNI_ENTRY(void, jni_CallNonvirtualVoidMethodA(JNIEnv *env, jobject obj, jclass cls, jmethodID methodID, const jvalue *args)) |
duke@435 | 1486 | JNIWrapper("CallNonvirtualVoidMethodA"); |
duke@435 | 1487 | DTRACE_PROBE4(hotspot_jni, CallNonvirtualVoidMethodA__entry, |
duke@435 | 1488 | env, obj, cls, methodID); |
duke@435 | 1489 | DT_VOID_RETURN_MARK(CallNonvirtualVoidMethodA); |
duke@435 | 1490 | JavaValue jvalue(T_VOID); |
duke@435 | 1491 | JNI_ArgumentPusherArray ap(THREAD, methodID, args); |
duke@435 | 1492 | jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK); |
duke@435 | 1493 | JNI_END |
duke@435 | 1494 | |
duke@435 | 1495 | |
duke@435 | 1496 | #define DEFINE_CALLSTATICMETHOD(ResultType, Result, Tag) \ |
duke@435 | 1497 | \ |
duke@435 | 1498 | DT_RETURN_MARK_DECL_FOR(Result, CallStatic##Result##Method, ResultType);\ |
duke@435 | 1499 | DT_RETURN_MARK_DECL_FOR(Result, CallStatic##Result##MethodV, ResultType);\ |
duke@435 | 1500 | DT_RETURN_MARK_DECL_FOR(Result, CallStatic##Result##MethodA, ResultType);\ |
duke@435 | 1501 | \ |
duke@435 | 1502 | JNI_ENTRY(ResultType, \ |
duke@435 | 1503 | jni_CallStatic##Result##Method(JNIEnv *env, jclass cls, jmethodID methodID, ...)) \ |
duke@435 | 1504 | JNIWrapper("CallStatic" XSTR(Result) "Method"); \ |
duke@435 | 1505 | \ |
duke@435 | 1506 | DTRACE_PROBE3(hotspot_jni, CallStatic##Result##Method__entry, env, cls, methodID);\ |
duke@435 | 1507 | ResultType ret = 0;\ |
duke@435 | 1508 | DT_RETURN_MARK_FOR(Result, CallStatic##Result##Method, ResultType, \ |
duke@435 | 1509 | (const ResultType&)ret);\ |
duke@435 | 1510 | \ |
duke@435 | 1511 | va_list args; \ |
duke@435 | 1512 | va_start(args, methodID); \ |
duke@435 | 1513 | JavaValue jvalue(Tag); \ |
duke@435 | 1514 | JNI_ArgumentPusherVaArg ap(THREAD, methodID, args); \ |
duke@435 | 1515 | jni_invoke_static(env, &jvalue, NULL, JNI_STATIC, methodID, &ap, CHECK_0); \ |
duke@435 | 1516 | va_end(args); \ |
duke@435 | 1517 | ret = jvalue.get_##ResultType(); \ |
duke@435 | 1518 | return ret;\ |
duke@435 | 1519 | JNI_END \ |
duke@435 | 1520 | \ |
duke@435 | 1521 | JNI_ENTRY(ResultType, \ |
duke@435 | 1522 | jni_CallStatic##Result##MethodV(JNIEnv *env, jclass cls, jmethodID methodID, va_list args)) \ |
duke@435 | 1523 | JNIWrapper("CallStatic" XSTR(Result) "MethodV"); \ |
duke@435 | 1524 | DTRACE_PROBE3(hotspot_jni, CallStatic##Result##MethodV__entry, env, cls, methodID);\ |
duke@435 | 1525 | ResultType ret = 0;\ |
duke@435 | 1526 | DT_RETURN_MARK_FOR(Result, CallStatic##Result##MethodV, ResultType, \ |
duke@435 | 1527 | (const ResultType&)ret);\ |
duke@435 | 1528 | \ |
duke@435 | 1529 | JavaValue jvalue(Tag); \ |
duke@435 | 1530 | JNI_ArgumentPusherVaArg ap(THREAD, methodID, args); \ |
duke@435 | 1531 | jni_invoke_static(env, &jvalue, NULL, JNI_STATIC, methodID, &ap, CHECK_0); \ |
duke@435 | 1532 | ret = jvalue.get_##ResultType(); \ |
duke@435 | 1533 | return ret;\ |
duke@435 | 1534 | JNI_END \ |
duke@435 | 1535 | \ |
duke@435 | 1536 | JNI_ENTRY(ResultType, \ |
duke@435 | 1537 | jni_CallStatic##Result##MethodA(JNIEnv *env, jclass cls, jmethodID methodID, const jvalue *args)) \ |
duke@435 | 1538 | JNIWrapper("CallStatic" XSTR(Result) "MethodA"); \ |
duke@435 | 1539 | DTRACE_PROBE3(hotspot_jni, CallStatic##Result##MethodA__entry, env, cls, methodID);\ |
duke@435 | 1540 | ResultType ret = 0;\ |
duke@435 | 1541 | DT_RETURN_MARK_FOR(Result, CallStatic##Result##MethodA, ResultType, \ |
duke@435 | 1542 | (const ResultType&)ret);\ |
duke@435 | 1543 | \ |
duke@435 | 1544 | JavaValue jvalue(Tag); \ |
duke@435 | 1545 | JNI_ArgumentPusherArray ap(THREAD, methodID, args); \ |
duke@435 | 1546 | jni_invoke_static(env, &jvalue, NULL, JNI_STATIC, methodID, &ap, CHECK_0); \ |
duke@435 | 1547 | ret = jvalue.get_##ResultType(); \ |
duke@435 | 1548 | return ret;\ |
duke@435 | 1549 | JNI_END |
duke@435 | 1550 | |
duke@435 | 1551 | // the runtime type of subword integral basic types is integer |
duke@435 | 1552 | DEFINE_CALLSTATICMETHOD(jboolean, Boolean, T_BOOLEAN) |
duke@435 | 1553 | DEFINE_CALLSTATICMETHOD(jbyte, Byte, T_BYTE) |
duke@435 | 1554 | DEFINE_CALLSTATICMETHOD(jchar, Char, T_CHAR) |
duke@435 | 1555 | DEFINE_CALLSTATICMETHOD(jshort, Short, T_SHORT) |
duke@435 | 1556 | |
duke@435 | 1557 | DEFINE_CALLSTATICMETHOD(jobject, Object, T_OBJECT) |
duke@435 | 1558 | DEFINE_CALLSTATICMETHOD(jint, Int, T_INT) |
duke@435 | 1559 | DEFINE_CALLSTATICMETHOD(jlong, Long, T_LONG) |
duke@435 | 1560 | DEFINE_CALLSTATICMETHOD(jfloat, Float, T_FLOAT) |
duke@435 | 1561 | DEFINE_CALLSTATICMETHOD(jdouble, Double, T_DOUBLE) |
duke@435 | 1562 | |
duke@435 | 1563 | |
duke@435 | 1564 | DT_VOID_RETURN_MARK_DECL(CallStaticVoidMethod); |
duke@435 | 1565 | DT_VOID_RETURN_MARK_DECL(CallStaticVoidMethodV); |
duke@435 | 1566 | DT_VOID_RETURN_MARK_DECL(CallStaticVoidMethodA); |
duke@435 | 1567 | |
duke@435 | 1568 | JNI_ENTRY(void, jni_CallStaticVoidMethod(JNIEnv *env, jclass cls, jmethodID methodID, ...)) |
duke@435 | 1569 | JNIWrapper("CallStaticVoidMethod"); |
duke@435 | 1570 | DTRACE_PROBE3(hotspot_jni, CallStaticVoidMethod__entry, env, cls, methodID); |
duke@435 | 1571 | DT_VOID_RETURN_MARK(CallStaticVoidMethod); |
duke@435 | 1572 | |
duke@435 | 1573 | va_list args; |
duke@435 | 1574 | va_start(args, methodID); |
duke@435 | 1575 | JavaValue jvalue(T_VOID); |
duke@435 | 1576 | JNI_ArgumentPusherVaArg ap(THREAD, methodID, args); |
duke@435 | 1577 | jni_invoke_static(env, &jvalue, NULL, JNI_STATIC, methodID, &ap, CHECK); |
duke@435 | 1578 | va_end(args); |
duke@435 | 1579 | JNI_END |
duke@435 | 1580 | |
duke@435 | 1581 | |
duke@435 | 1582 | JNI_ENTRY(void, jni_CallStaticVoidMethodV(JNIEnv *env, jclass cls, jmethodID methodID, va_list args)) |
duke@435 | 1583 | JNIWrapper("CallStaticVoidMethodV"); |
duke@435 | 1584 | DTRACE_PROBE3(hotspot_jni, CallStaticVoidMethodV__entry, env, cls, methodID); |
duke@435 | 1585 | DT_VOID_RETURN_MARK(CallStaticVoidMethodV); |
duke@435 | 1586 | |
duke@435 | 1587 | JavaValue jvalue(T_VOID); |
duke@435 | 1588 | JNI_ArgumentPusherVaArg ap(THREAD, methodID, args); |
duke@435 | 1589 | jni_invoke_static(env, &jvalue, NULL, JNI_STATIC, methodID, &ap, CHECK); |
duke@435 | 1590 | JNI_END |
duke@435 | 1591 | |
duke@435 | 1592 | |
duke@435 | 1593 | JNI_ENTRY(void, jni_CallStaticVoidMethodA(JNIEnv *env, jclass cls, jmethodID methodID, const jvalue *args)) |
duke@435 | 1594 | JNIWrapper("CallStaticVoidMethodA"); |
duke@435 | 1595 | DTRACE_PROBE3(hotspot_jni, CallStaticVoidMethodA__entry, env, cls, methodID); |
duke@435 | 1596 | DT_VOID_RETURN_MARK(CallStaticVoidMethodA); |
duke@435 | 1597 | |
duke@435 | 1598 | JavaValue jvalue(T_VOID); |
duke@435 | 1599 | JNI_ArgumentPusherArray ap(THREAD, methodID, args); |
duke@435 | 1600 | jni_invoke_static(env, &jvalue, NULL, JNI_STATIC, methodID, &ap, CHECK); |
duke@435 | 1601 | JNI_END |
duke@435 | 1602 | |
duke@435 | 1603 | |
duke@435 | 1604 | // |
duke@435 | 1605 | // Accessing Fields |
duke@435 | 1606 | // |
duke@435 | 1607 | |
duke@435 | 1608 | |
duke@435 | 1609 | DT_RETURN_MARK_DECL(GetFieldID, jfieldID); |
duke@435 | 1610 | |
duke@435 | 1611 | JNI_ENTRY(jfieldID, jni_GetFieldID(JNIEnv *env, jclass clazz, |
duke@435 | 1612 | const char *name, const char *sig)) |
duke@435 | 1613 | JNIWrapper("GetFieldID"); |
duke@435 | 1614 | DTRACE_PROBE4(hotspot_jni, GetFieldID__entry, env, clazz, name, sig); |
duke@435 | 1615 | jfieldID ret = 0; |
duke@435 | 1616 | DT_RETURN_MARK(GetFieldID, jfieldID, (const jfieldID&)ret); |
duke@435 | 1617 | |
duke@435 | 1618 | // The class should have been loaded (we have an instance of the class |
duke@435 | 1619 | // passed in) so the field and signature should already be in the symbol |
duke@435 | 1620 | // table. If they're not there, the field doesn't exist. |
duke@435 | 1621 | symbolHandle fieldname = |
duke@435 | 1622 | symbolHandle(THREAD, SymbolTable::probe(name, (int)strlen(name))); |
duke@435 | 1623 | symbolHandle signame = |
duke@435 | 1624 | symbolHandle(THREAD, SymbolTable::probe(sig, (int)strlen(sig))); |
duke@435 | 1625 | if (fieldname.is_null() || signame.is_null()) { |
duke@435 | 1626 | THROW_MSG_0(vmSymbols::java_lang_NoSuchFieldError(), (char*) name); |
duke@435 | 1627 | } |
duke@435 | 1628 | KlassHandle k(THREAD, |
duke@435 | 1629 | java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(clazz))); |
duke@435 | 1630 | // Make sure class is initialized before handing id's out to fields |
duke@435 | 1631 | Klass::cast(k())->initialize(CHECK_NULL); |
duke@435 | 1632 | |
duke@435 | 1633 | fieldDescriptor fd; |
duke@435 | 1634 | if (!Klass::cast(k())->oop_is_instance() || |
duke@435 | 1635 | !instanceKlass::cast(k())->find_field(fieldname(), signame(), false, &fd)) { |
duke@435 | 1636 | THROW_MSG_0(vmSymbols::java_lang_NoSuchFieldError(), (char*) name); |
duke@435 | 1637 | } |
duke@435 | 1638 | |
duke@435 | 1639 | // A jfieldID for a non-static field is simply the offset of the field within the instanceOop |
duke@435 | 1640 | // It may also have hash bits for k, if VerifyJNIFields is turned on. |
duke@435 | 1641 | ret = jfieldIDWorkaround::to_instance_jfieldID(k(), fd.offset()); |
duke@435 | 1642 | return ret; |
duke@435 | 1643 | JNI_END |
duke@435 | 1644 | |
duke@435 | 1645 | |
duke@435 | 1646 | JNI_ENTRY(jobject, jni_GetObjectField(JNIEnv *env, jobject obj, jfieldID fieldID)) |
duke@435 | 1647 | JNIWrapper("GetObjectField"); |
duke@435 | 1648 | DTRACE_PROBE3(hotspot_jni, GetObjectField__entry, env, obj, fieldID); |
duke@435 | 1649 | oop o = JNIHandles::resolve_non_null(obj); |
duke@435 | 1650 | klassOop k = o->klass(); |
duke@435 | 1651 | int offset = jfieldIDWorkaround::from_instance_jfieldID(k, fieldID); |
duke@435 | 1652 | // Keep JVMTI addition small and only check enabled flag here. |
duke@435 | 1653 | // jni_GetField_probe() assumes that is okay to create handles. |
duke@435 | 1654 | if (JvmtiExport::should_post_field_access()) { |
duke@435 | 1655 | o = JvmtiExport::jni_GetField_probe(thread, obj, o, k, fieldID, false); |
duke@435 | 1656 | } |
duke@435 | 1657 | jobject ret = JNIHandles::make_local(env, o->obj_field(offset)); |
duke@435 | 1658 | DTRACE_PROBE1(hotspot_jni, GetObjectField__return, ret); |
duke@435 | 1659 | return ret; |
duke@435 | 1660 | JNI_END |
duke@435 | 1661 | |
duke@435 | 1662 | |
duke@435 | 1663 | #define DEFINE_GETFIELD(Return,Fieldname,Result) \ |
duke@435 | 1664 | \ |
duke@435 | 1665 | DT_RETURN_MARK_DECL_FOR(Result, Get##Result##Field, Return);\ |
duke@435 | 1666 | \ |
duke@435 | 1667 | JNI_QUICK_ENTRY(Return, jni_Get##Result##Field(JNIEnv *env, jobject obj, jfieldID fieldID)) \ |
duke@435 | 1668 | JNIWrapper("Get" XSTR(Result) "Field"); \ |
duke@435 | 1669 | \ |
duke@435 | 1670 | DTRACE_PROBE3(hotspot_jni, Get##Result##Field__entry, env, obj, fieldID);\ |
duke@435 | 1671 | Return ret = 0;\ |
duke@435 | 1672 | DT_RETURN_MARK_FOR(Result, Get##Result##Field, Return, (const Return&)ret);\ |
duke@435 | 1673 | \ |
duke@435 | 1674 | oop o = JNIHandles::resolve_non_null(obj); \ |
duke@435 | 1675 | klassOop k = o->klass(); \ |
duke@435 | 1676 | int offset = jfieldIDWorkaround::from_instance_jfieldID(k, fieldID); \ |
duke@435 | 1677 | /* Keep JVMTI addition small and only check enabled flag here. */ \ |
duke@435 | 1678 | /* jni_GetField_probe_nh() assumes that is not okay to create handles */ \ |
duke@435 | 1679 | /* and creates a ResetNoHandleMark. */ \ |
duke@435 | 1680 | if (JvmtiExport::should_post_field_access()) { \ |
duke@435 | 1681 | o = JvmtiExport::jni_GetField_probe_nh(thread, obj, o, k, fieldID, false); \ |
duke@435 | 1682 | } \ |
duke@435 | 1683 | ret = o->Fieldname##_field(offset); \ |
duke@435 | 1684 | return ret; \ |
duke@435 | 1685 | JNI_END |
duke@435 | 1686 | |
duke@435 | 1687 | DEFINE_GETFIELD(jboolean, bool, Boolean) |
duke@435 | 1688 | DEFINE_GETFIELD(jbyte, byte, Byte) |
duke@435 | 1689 | DEFINE_GETFIELD(jchar, char, Char) |
duke@435 | 1690 | DEFINE_GETFIELD(jshort, short, Short) |
duke@435 | 1691 | DEFINE_GETFIELD(jint, int, Int) |
duke@435 | 1692 | DEFINE_GETFIELD(jlong, long, Long) |
duke@435 | 1693 | DEFINE_GETFIELD(jfloat, float, Float) |
duke@435 | 1694 | DEFINE_GETFIELD(jdouble, double, Double) |
duke@435 | 1695 | |
duke@435 | 1696 | address jni_GetBooleanField_addr() { |
duke@435 | 1697 | return (address)jni_GetBooleanField; |
duke@435 | 1698 | } |
duke@435 | 1699 | address jni_GetByteField_addr() { |
duke@435 | 1700 | return (address)jni_GetByteField; |
duke@435 | 1701 | } |
duke@435 | 1702 | address jni_GetCharField_addr() { |
duke@435 | 1703 | return (address)jni_GetCharField; |
duke@435 | 1704 | } |
duke@435 | 1705 | address jni_GetShortField_addr() { |
duke@435 | 1706 | return (address)jni_GetShortField; |
duke@435 | 1707 | } |
duke@435 | 1708 | address jni_GetIntField_addr() { |
duke@435 | 1709 | return (address)jni_GetIntField; |
duke@435 | 1710 | } |
duke@435 | 1711 | address jni_GetLongField_addr() { |
duke@435 | 1712 | return (address)jni_GetLongField; |
duke@435 | 1713 | } |
duke@435 | 1714 | address jni_GetFloatField_addr() { |
duke@435 | 1715 | return (address)jni_GetFloatField; |
duke@435 | 1716 | } |
duke@435 | 1717 | address jni_GetDoubleField_addr() { |
duke@435 | 1718 | return (address)jni_GetDoubleField; |
duke@435 | 1719 | } |
duke@435 | 1720 | |
duke@435 | 1721 | JNI_QUICK_ENTRY(void, jni_SetObjectField(JNIEnv *env, jobject obj, jfieldID fieldID, jobject value)) |
duke@435 | 1722 | JNIWrapper("SetObjectField"); |
duke@435 | 1723 | DTRACE_PROBE4(hotspot_jni, SetObjectField__entry, env, obj, fieldID, value); |
duke@435 | 1724 | oop o = JNIHandles::resolve_non_null(obj); |
duke@435 | 1725 | klassOop k = o->klass(); |
duke@435 | 1726 | int offset = jfieldIDWorkaround::from_instance_jfieldID(k, fieldID); |
duke@435 | 1727 | // Keep JVMTI addition small and only check enabled flag here. |
duke@435 | 1728 | // jni_SetField_probe_nh() assumes that is not okay to create handles |
duke@435 | 1729 | // and creates a ResetNoHandleMark. |
duke@435 | 1730 | if (JvmtiExport::should_post_field_modification()) { |
duke@435 | 1731 | jvalue field_value; |
duke@435 | 1732 | field_value.l = value; |
duke@435 | 1733 | o = JvmtiExport::jni_SetField_probe_nh(thread, obj, o, k, fieldID, false, 'L', (jvalue *)&field_value); |
duke@435 | 1734 | } |
duke@435 | 1735 | o->obj_field_put(offset, JNIHandles::resolve(value)); |
duke@435 | 1736 | DTRACE_PROBE(hotspot_jni, SetObjectField__return); |
duke@435 | 1737 | JNI_END |
duke@435 | 1738 | |
duke@435 | 1739 | #define DEFINE_SETFIELD(Argument,Fieldname,Result,SigType,unionType) \ |
duke@435 | 1740 | \ |
duke@435 | 1741 | JNI_QUICK_ENTRY(void, jni_Set##Result##Field(JNIEnv *env, jobject obj, jfieldID fieldID, Argument value)) \ |
duke@435 | 1742 | JNIWrapper("Set" XSTR(Result) "Field"); \ |
duke@435 | 1743 | \ |
duke@435 | 1744 | HS_DTRACE_PROBE_CDECL_N(hotspot_jni, Set##Result##Field__entry, \ |
duke@435 | 1745 | ( JNIEnv*, jobject, jfieldID FP_SELECT_##Result(COMMA Argument,/*empty*/) ) ); \ |
duke@435 | 1746 | HS_DTRACE_PROBE_N(hotspot_jni, Set##Result##Field__entry, \ |
duke@435 | 1747 | ( env, obj, fieldID FP_SELECT_##Result(COMMA value,/*empty*/) ) ); \ |
duke@435 | 1748 | \ |
duke@435 | 1749 | oop o = JNIHandles::resolve_non_null(obj); \ |
duke@435 | 1750 | klassOop k = o->klass(); \ |
duke@435 | 1751 | int offset = jfieldIDWorkaround::from_instance_jfieldID(k, fieldID); \ |
duke@435 | 1752 | /* Keep JVMTI addition small and only check enabled flag here. */ \ |
duke@435 | 1753 | /* jni_SetField_probe_nh() assumes that is not okay to create handles */ \ |
duke@435 | 1754 | /* and creates a ResetNoHandleMark. */ \ |
duke@435 | 1755 | if (JvmtiExport::should_post_field_modification()) { \ |
duke@435 | 1756 | jvalue field_value; \ |
duke@435 | 1757 | field_value.unionType = value; \ |
duke@435 | 1758 | o = JvmtiExport::jni_SetField_probe_nh(thread, obj, o, k, fieldID, false, SigType, (jvalue *)&field_value); \ |
duke@435 | 1759 | } \ |
duke@435 | 1760 | o->Fieldname##_field_put(offset, value); \ |
duke@435 | 1761 | DTRACE_PROBE(hotspot_jni, Set##Result##Field__return);\ |
duke@435 | 1762 | JNI_END |
duke@435 | 1763 | |
duke@435 | 1764 | DEFINE_SETFIELD(jboolean, bool, Boolean, 'Z', z) |
duke@435 | 1765 | DEFINE_SETFIELD(jbyte, byte, Byte, 'B', b) |
duke@435 | 1766 | DEFINE_SETFIELD(jchar, char, Char, 'C', c) |
duke@435 | 1767 | DEFINE_SETFIELD(jshort, short, Short, 'S', s) |
duke@435 | 1768 | DEFINE_SETFIELD(jint, int, Int, 'I', i) |
duke@435 | 1769 | DEFINE_SETFIELD(jlong, long, Long, 'J', j) |
duke@435 | 1770 | DEFINE_SETFIELD(jfloat, float, Float, 'F', f) |
duke@435 | 1771 | DEFINE_SETFIELD(jdouble, double, Double, 'D', d) |
duke@435 | 1772 | |
duke@435 | 1773 | DT_RETURN_MARK_DECL(ToReflectedField, jobject); |
duke@435 | 1774 | |
duke@435 | 1775 | JNI_ENTRY(jobject, jni_ToReflectedField(JNIEnv *env, jclass cls, jfieldID fieldID, jboolean isStatic)) |
duke@435 | 1776 | JNIWrapper("ToReflectedField"); |
duke@435 | 1777 | DTRACE_PROBE4(hotspot_jni, ToReflectedField__entry, |
duke@435 | 1778 | env, cls, fieldID, isStatic); |
duke@435 | 1779 | jobject ret = NULL; |
duke@435 | 1780 | DT_RETURN_MARK(ToReflectedField, jobject, (const jobject&)ret); |
duke@435 | 1781 | |
duke@435 | 1782 | fieldDescriptor fd; |
duke@435 | 1783 | bool found = false; |
duke@435 | 1784 | klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); |
duke@435 | 1785 | |
duke@435 | 1786 | assert(jfieldIDWorkaround::is_static_jfieldID(fieldID) == (isStatic != 0), "invalid fieldID"); |
duke@435 | 1787 | |
duke@435 | 1788 | if (isStatic) { |
duke@435 | 1789 | // Static field. The fieldID a JNIid specifying the field holder and the offset within the klassOop. |
duke@435 | 1790 | JNIid* id = jfieldIDWorkaround::from_static_jfieldID(fieldID); |
duke@435 | 1791 | assert(id->is_static_field_id(), "invalid static field id"); |
duke@435 | 1792 | found = instanceKlass::cast(id->holder())->find_local_field_from_offset(id->offset(), true, &fd); |
duke@435 | 1793 | } else { |
duke@435 | 1794 | // Non-static field. The fieldID is really the offset of the field within the instanceOop. |
duke@435 | 1795 | int offset = jfieldIDWorkaround::from_instance_jfieldID(k, fieldID); |
duke@435 | 1796 | found = instanceKlass::cast(k)->find_field_from_offset(offset, false, &fd); |
duke@435 | 1797 | } |
duke@435 | 1798 | assert(found, "bad fieldID passed into jni_ToReflectedField"); |
duke@435 | 1799 | oop reflected = Reflection::new_field(&fd, UseNewReflection, CHECK_NULL); |
duke@435 | 1800 | ret = JNIHandles::make_local(env, reflected); |
duke@435 | 1801 | return ret; |
duke@435 | 1802 | JNI_END |
duke@435 | 1803 | |
duke@435 | 1804 | |
duke@435 | 1805 | // |
duke@435 | 1806 | // Accessing Static Fields |
duke@435 | 1807 | // |
duke@435 | 1808 | DT_RETURN_MARK_DECL(GetStaticFieldID, jfieldID); |
duke@435 | 1809 | |
duke@435 | 1810 | JNI_ENTRY(jfieldID, jni_GetStaticFieldID(JNIEnv *env, jclass clazz, |
duke@435 | 1811 | const char *name, const char *sig)) |
duke@435 | 1812 | JNIWrapper("GetStaticFieldID"); |
duke@435 | 1813 | DTRACE_PROBE4(hotspot_jni, GetStaticFieldID__entry, env, clazz, name, sig); |
duke@435 | 1814 | jfieldID ret = NULL; |
duke@435 | 1815 | DT_RETURN_MARK(GetStaticFieldID, jfieldID, (const jfieldID&)ret); |
duke@435 | 1816 | |
duke@435 | 1817 | // The class should have been loaded (we have an instance of the class |
duke@435 | 1818 | // passed in) so the field and signature should already be in the symbol |
duke@435 | 1819 | // table. If they're not there, the field doesn't exist. |
duke@435 | 1820 | symbolHandle fieldname = |
duke@435 | 1821 | symbolHandle(THREAD, SymbolTable::probe(name, (int)strlen(name))); |
duke@435 | 1822 | symbolHandle signame = |
duke@435 | 1823 | symbolHandle(THREAD, SymbolTable::probe(sig, (int)strlen(sig))); |
duke@435 | 1824 | if (fieldname.is_null() || signame.is_null()) { |
duke@435 | 1825 | THROW_MSG_0(vmSymbols::java_lang_NoSuchFieldError(), (char*) name); |
duke@435 | 1826 | } |
duke@435 | 1827 | KlassHandle k(THREAD, |
duke@435 | 1828 | java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(clazz))); |
duke@435 | 1829 | // Make sure class is initialized before handing id's out to static fields |
duke@435 | 1830 | Klass::cast(k())->initialize(CHECK_NULL); |
duke@435 | 1831 | |
duke@435 | 1832 | fieldDescriptor fd; |
duke@435 | 1833 | if (!Klass::cast(k())->oop_is_instance() || |
duke@435 | 1834 | !instanceKlass::cast(k())->find_field(fieldname(), signame(), true, &fd)) { |
duke@435 | 1835 | THROW_MSG_0(vmSymbols::java_lang_NoSuchFieldError(), (char*) name); |
duke@435 | 1836 | } |
duke@435 | 1837 | |
duke@435 | 1838 | // A jfieldID for a static field is a JNIid specifying the field holder and the offset within the klassOop |
duke@435 | 1839 | JNIid* id = instanceKlass::cast(fd.field_holder())->jni_id_for(fd.offset()); |
duke@435 | 1840 | debug_only(id->set_is_static_field_id();) |
duke@435 | 1841 | |
duke@435 | 1842 | debug_only(int first_offset = instanceKlass::cast(fd.field_holder())->offset_of_static_fields();) |
duke@435 | 1843 | debug_only(int end_offset = first_offset + (instanceKlass::cast(fd.field_holder())->static_field_size() * wordSize);) |
duke@435 | 1844 | assert(id->offset() >= first_offset && id->offset() < end_offset, "invalid static field offset"); |
duke@435 | 1845 | |
duke@435 | 1846 | ret = jfieldIDWorkaround::to_static_jfieldID(id); |
duke@435 | 1847 | return ret; |
duke@435 | 1848 | JNI_END |
duke@435 | 1849 | |
duke@435 | 1850 | |
duke@435 | 1851 | JNI_ENTRY(jobject, jni_GetStaticObjectField(JNIEnv *env, jclass clazz, jfieldID fieldID)) |
duke@435 | 1852 | JNIWrapper("GetStaticObjectField"); |
duke@435 | 1853 | DTRACE_PROBE3(hotspot_jni, GetStaticObjectField__entry, env, clazz, fieldID); |
duke@435 | 1854 | #ifndef JNICHECK_KERNEL |
duke@435 | 1855 | DEBUG_ONLY(klassOop param_k = jniCheck::validate_class(thread, clazz);) |
duke@435 | 1856 | #endif // JNICHECK_KERNEL |
duke@435 | 1857 | JNIid* id = jfieldIDWorkaround::from_static_jfieldID(fieldID); |
duke@435 | 1858 | assert(id->is_static_field_id(), "invalid static field id"); |
duke@435 | 1859 | // Keep JVMTI addition small and only check enabled flag here. |
duke@435 | 1860 | // jni_GetField_probe() assumes that is okay to create handles. |
duke@435 | 1861 | if (JvmtiExport::should_post_field_access()) { |
duke@435 | 1862 | JvmtiExport::jni_GetField_probe(thread, NULL, NULL, id->holder(), fieldID, true); |
duke@435 | 1863 | } |
duke@435 | 1864 | jobject ret = JNIHandles::make_local(id->holder()->obj_field(id->offset())); |
duke@435 | 1865 | DTRACE_PROBE1(hotspot_jni, GetStaticObjectField__return, ret); |
duke@435 | 1866 | return ret; |
duke@435 | 1867 | JNI_END |
duke@435 | 1868 | |
duke@435 | 1869 | #define DEFINE_GETSTATICFIELD(Return,Fieldname,Result) \ |
duke@435 | 1870 | \ |
duke@435 | 1871 | DT_RETURN_MARK_DECL_FOR(Result, GetStatic##Result##Field, Return);\ |
duke@435 | 1872 | \ |
duke@435 | 1873 | JNI_ENTRY(Return, jni_GetStatic##Result##Field(JNIEnv *env, jclass clazz, jfieldID fieldID)) \ |
duke@435 | 1874 | JNIWrapper("GetStatic" XSTR(Result) "Field"); \ |
duke@435 | 1875 | DTRACE_PROBE3(hotspot_jni, GetStatic##Result##Field__entry, env, clazz, fieldID);\ |
duke@435 | 1876 | Return ret = 0;\ |
duke@435 | 1877 | DT_RETURN_MARK_FOR(Result, GetStatic##Result##Field, Return, \ |
duke@435 | 1878 | (const Return&)ret);\ |
duke@435 | 1879 | JNIid* id = jfieldIDWorkaround::from_static_jfieldID(fieldID); \ |
duke@435 | 1880 | assert(id->is_static_field_id(), "invalid static field id"); \ |
duke@435 | 1881 | /* Keep JVMTI addition small and only check enabled flag here. */ \ |
duke@435 | 1882 | /* jni_GetField_probe() assumes that is okay to create handles. */ \ |
duke@435 | 1883 | if (JvmtiExport::should_post_field_access()) { \ |
duke@435 | 1884 | JvmtiExport::jni_GetField_probe(thread, NULL, NULL, id->holder(), fieldID, true); \ |
duke@435 | 1885 | } \ |
duke@435 | 1886 | ret = id->holder()-> Fieldname##_field (id->offset()); \ |
duke@435 | 1887 | return ret;\ |
duke@435 | 1888 | JNI_END |
duke@435 | 1889 | |
duke@435 | 1890 | DEFINE_GETSTATICFIELD(jboolean, bool, Boolean) |
duke@435 | 1891 | DEFINE_GETSTATICFIELD(jbyte, byte, Byte) |
duke@435 | 1892 | DEFINE_GETSTATICFIELD(jchar, char, Char) |
duke@435 | 1893 | DEFINE_GETSTATICFIELD(jshort, short, Short) |
duke@435 | 1894 | DEFINE_GETSTATICFIELD(jint, int, Int) |
duke@435 | 1895 | DEFINE_GETSTATICFIELD(jlong, long, Long) |
duke@435 | 1896 | DEFINE_GETSTATICFIELD(jfloat, float, Float) |
duke@435 | 1897 | DEFINE_GETSTATICFIELD(jdouble, double, Double) |
duke@435 | 1898 | |
duke@435 | 1899 | |
duke@435 | 1900 | JNI_ENTRY(void, jni_SetStaticObjectField(JNIEnv *env, jclass clazz, jfieldID fieldID, jobject value)) |
duke@435 | 1901 | JNIWrapper("SetStaticObjectField"); |
duke@435 | 1902 | DTRACE_PROBE4(hotspot_jni, SetStaticObjectField__entry, env, clazz, fieldID, value); |
duke@435 | 1903 | JNIid* id = jfieldIDWorkaround::from_static_jfieldID(fieldID); |
duke@435 | 1904 | assert(id->is_static_field_id(), "invalid static field id"); |
duke@435 | 1905 | // Keep JVMTI addition small and only check enabled flag here. |
duke@435 | 1906 | // jni_SetField_probe() assumes that is okay to create handles. |
duke@435 | 1907 | if (JvmtiExport::should_post_field_modification()) { |
duke@435 | 1908 | jvalue field_value; |
duke@435 | 1909 | field_value.l = value; |
duke@435 | 1910 | JvmtiExport::jni_SetField_probe(thread, NULL, NULL, id->holder(), fieldID, true, 'L', (jvalue *)&field_value); |
duke@435 | 1911 | } |
duke@435 | 1912 | id->holder()->obj_field_put(id->offset(), JNIHandles::resolve(value)); |
duke@435 | 1913 | DTRACE_PROBE(hotspot_jni, SetStaticObjectField__return); |
duke@435 | 1914 | JNI_END |
duke@435 | 1915 | |
duke@435 | 1916 | |
duke@435 | 1917 | #define DEFINE_SETSTATICFIELD(Argument,Fieldname,Result,SigType,unionType) \ |
duke@435 | 1918 | \ |
duke@435 | 1919 | JNI_ENTRY(void, jni_SetStatic##Result##Field(JNIEnv *env, jclass clazz, jfieldID fieldID, Argument value)) \ |
duke@435 | 1920 | JNIWrapper("SetStatic" XSTR(Result) "Field"); \ |
duke@435 | 1921 | HS_DTRACE_PROBE_CDECL_N(hotspot_jni, SetStatic##Result##Field__entry,\ |
duke@435 | 1922 | ( JNIEnv*, jclass, jfieldID FP_SELECT_##Result(COMMA Argument,/*empty*/) ) ); \ |
duke@435 | 1923 | HS_DTRACE_PROBE_N(hotspot_jni, SetStatic##Result##Field__entry, \ |
duke@435 | 1924 | ( env, clazz, fieldID FP_SELECT_##Result(COMMA value,/*empty*/) ) ); \ |
duke@435 | 1925 | \ |
duke@435 | 1926 | JNIid* id = jfieldIDWorkaround::from_static_jfieldID(fieldID); \ |
duke@435 | 1927 | assert(id->is_static_field_id(), "invalid static field id"); \ |
duke@435 | 1928 | /* Keep JVMTI addition small and only check enabled flag here. */ \ |
duke@435 | 1929 | /* jni_SetField_probe() assumes that is okay to create handles. */ \ |
duke@435 | 1930 | if (JvmtiExport::should_post_field_modification()) { \ |
duke@435 | 1931 | jvalue field_value; \ |
duke@435 | 1932 | field_value.unionType = value; \ |
duke@435 | 1933 | JvmtiExport::jni_SetField_probe(thread, NULL, NULL, id->holder(), fieldID, true, SigType, (jvalue *)&field_value); \ |
duke@435 | 1934 | } \ |
duke@435 | 1935 | id->holder()-> Fieldname##_field_put (id->offset(), value); \ |
duke@435 | 1936 | DTRACE_PROBE(hotspot_jni, SetStatic##Result##Field__return);\ |
duke@435 | 1937 | JNI_END |
duke@435 | 1938 | |
duke@435 | 1939 | DEFINE_SETSTATICFIELD(jboolean, bool, Boolean, 'Z', z) |
duke@435 | 1940 | DEFINE_SETSTATICFIELD(jbyte, byte, Byte, 'B', b) |
duke@435 | 1941 | DEFINE_SETSTATICFIELD(jchar, char, Char, 'C', c) |
duke@435 | 1942 | DEFINE_SETSTATICFIELD(jshort, short, Short, 'S', s) |
duke@435 | 1943 | DEFINE_SETSTATICFIELD(jint, int, Int, 'I', i) |
duke@435 | 1944 | DEFINE_SETSTATICFIELD(jlong, long, Long, 'J', j) |
duke@435 | 1945 | DEFINE_SETSTATICFIELD(jfloat, float, Float, 'F', f) |
duke@435 | 1946 | DEFINE_SETSTATICFIELD(jdouble, double, Double, 'D', d) |
duke@435 | 1947 | |
duke@435 | 1948 | |
duke@435 | 1949 | // |
duke@435 | 1950 | // String Operations |
duke@435 | 1951 | // |
duke@435 | 1952 | |
duke@435 | 1953 | // Unicode Interface |
duke@435 | 1954 | |
duke@435 | 1955 | DT_RETURN_MARK_DECL(NewString, jstring); |
duke@435 | 1956 | |
duke@435 | 1957 | JNI_ENTRY(jstring, jni_NewString(JNIEnv *env, const jchar *unicodeChars, jsize len)) |
duke@435 | 1958 | JNIWrapper("NewString"); |
duke@435 | 1959 | DTRACE_PROBE3(hotspot_jni, NewString__entry, env, unicodeChars, len); |
duke@435 | 1960 | jstring ret = NULL; |
duke@435 | 1961 | DT_RETURN_MARK(NewString, jstring, (const jstring&)ret); |
duke@435 | 1962 | oop string=java_lang_String::create_oop_from_unicode((jchar*) unicodeChars, len, CHECK_NULL); |
duke@435 | 1963 | ret = (jstring) JNIHandles::make_local(env, string); |
duke@435 | 1964 | return ret; |
duke@435 | 1965 | JNI_END |
duke@435 | 1966 | |
duke@435 | 1967 | |
duke@435 | 1968 | JNI_QUICK_ENTRY(jsize, jni_GetStringLength(JNIEnv *env, jstring string)) |
duke@435 | 1969 | JNIWrapper("GetStringLength"); |
duke@435 | 1970 | DTRACE_PROBE2(hotspot_jni, GetStringLength__entry, env, string); |
duke@435 | 1971 | jsize ret = java_lang_String::length(JNIHandles::resolve_non_null(string)); |
duke@435 | 1972 | DTRACE_PROBE1(hotspot_jni, GetStringLength__return, ret); |
duke@435 | 1973 | return ret; |
duke@435 | 1974 | JNI_END |
duke@435 | 1975 | |
duke@435 | 1976 | |
duke@435 | 1977 | JNI_QUICK_ENTRY(const jchar*, jni_GetStringChars( |
duke@435 | 1978 | JNIEnv *env, jstring string, jboolean *isCopy)) |
duke@435 | 1979 | JNIWrapper("GetStringChars"); |
duke@435 | 1980 | DTRACE_PROBE3(hotspot_jni, GetStringChars__entry, env, string, isCopy); |
duke@435 | 1981 | //%note jni_5 |
duke@435 | 1982 | if (isCopy != NULL) { |
duke@435 | 1983 | *isCopy = JNI_TRUE; |
duke@435 | 1984 | } |
duke@435 | 1985 | oop s = JNIHandles::resolve_non_null(string); |
duke@435 | 1986 | int s_len = java_lang_String::length(s); |
duke@435 | 1987 | typeArrayOop s_value = java_lang_String::value(s); |
duke@435 | 1988 | int s_offset = java_lang_String::offset(s); |
duke@435 | 1989 | jchar* buf = NEW_C_HEAP_ARRAY(jchar, s_len + 1); // add one for zero termination |
duke@435 | 1990 | if (s_len > 0) { |
duke@435 | 1991 | memcpy(buf, s_value->char_at_addr(s_offset), sizeof(jchar)*s_len); |
duke@435 | 1992 | } |
duke@435 | 1993 | buf[s_len] = 0; |
duke@435 | 1994 | DTRACE_PROBE1(hotspot_jni, GetStringChars__return, buf); |
duke@435 | 1995 | return buf; |
duke@435 | 1996 | JNI_END |
duke@435 | 1997 | |
duke@435 | 1998 | |
duke@435 | 1999 | JNI_QUICK_ENTRY(void, jni_ReleaseStringChars(JNIEnv *env, jstring str, const jchar *chars)) |
duke@435 | 2000 | JNIWrapper("ReleaseStringChars"); |
duke@435 | 2001 | DTRACE_PROBE3(hotspot_jni, ReleaseStringChars__entry, env, str, chars); |
duke@435 | 2002 | //%note jni_6 |
duke@435 | 2003 | if (chars != NULL) { |
duke@435 | 2004 | // Since String objects are supposed to be immutable, don't copy any |
duke@435 | 2005 | // new data back. A bad user will have to go after the char array. |
duke@435 | 2006 | FreeHeap((void*) chars); |
duke@435 | 2007 | } |
duke@435 | 2008 | DTRACE_PROBE(hotspot_jni, ReleaseStringChars__return); |
duke@435 | 2009 | JNI_END |
duke@435 | 2010 | |
duke@435 | 2011 | |
duke@435 | 2012 | // UTF Interface |
duke@435 | 2013 | |
duke@435 | 2014 | DT_RETURN_MARK_DECL(NewStringUTF, jstring); |
duke@435 | 2015 | |
duke@435 | 2016 | JNI_ENTRY(jstring, jni_NewStringUTF(JNIEnv *env, const char *bytes)) |
duke@435 | 2017 | JNIWrapper("NewStringUTF"); |
duke@435 | 2018 | DTRACE_PROBE2(hotspot_jni, NewStringUTF__entry, env, bytes); |
duke@435 | 2019 | jstring ret; |
duke@435 | 2020 | DT_RETURN_MARK(NewStringUTF, jstring, (const jstring&)ret); |
duke@435 | 2021 | |
duke@435 | 2022 | oop result = java_lang_String::create_oop_from_str((char*) bytes, CHECK_NULL); |
duke@435 | 2023 | ret = (jstring) JNIHandles::make_local(env, result); |
duke@435 | 2024 | return ret; |
duke@435 | 2025 | JNI_END |
duke@435 | 2026 | |
duke@435 | 2027 | |
duke@435 | 2028 | JNI_ENTRY(jsize, jni_GetStringUTFLength(JNIEnv *env, jstring string)) |
duke@435 | 2029 | JNIWrapper("GetStringUTFLength"); |
duke@435 | 2030 | DTRACE_PROBE2(hotspot_jni, GetStringUTFLength__entry, env, string); |
duke@435 | 2031 | jsize ret = java_lang_String::utf8_length(JNIHandles::resolve_non_null(string)); |
duke@435 | 2032 | DTRACE_PROBE1(hotspot_jni, GetStringUTFLength__return, ret); |
duke@435 | 2033 | return ret; |
duke@435 | 2034 | JNI_END |
duke@435 | 2035 | |
duke@435 | 2036 | |
duke@435 | 2037 | JNI_ENTRY(const char*, jni_GetStringUTFChars(JNIEnv *env, jstring string, jboolean *isCopy)) |
duke@435 | 2038 | JNIWrapper("GetStringUTFChars"); |
duke@435 | 2039 | DTRACE_PROBE3(hotspot_jni, GetStringUTFChars__entry, env, string, isCopy); |
duke@435 | 2040 | ResourceMark rm; |
duke@435 | 2041 | char* str = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(string)); |
duke@435 | 2042 | int length = (int)strlen(str); |
duke@435 | 2043 | char* result = AllocateHeap(length+1, "GetStringUTFChars"); |
duke@435 | 2044 | strcpy(result, str); |
duke@435 | 2045 | if (isCopy != NULL) *isCopy = JNI_TRUE; |
duke@435 | 2046 | DTRACE_PROBE1(hotspot_jni, GetStringUTFChars__return, result); |
duke@435 | 2047 | return result; |
duke@435 | 2048 | JNI_END |
duke@435 | 2049 | |
duke@435 | 2050 | |
duke@435 | 2051 | JNI_LEAF(void, jni_ReleaseStringUTFChars(JNIEnv *env, jstring str, const char *chars)) |
duke@435 | 2052 | JNIWrapper("ReleaseStringUTFChars"); |
duke@435 | 2053 | DTRACE_PROBE3(hotspot_jni, ReleaseStringUTFChars__entry, env, str, chars); |
duke@435 | 2054 | if (chars != NULL) { |
duke@435 | 2055 | FreeHeap((char*) chars); |
duke@435 | 2056 | } |
duke@435 | 2057 | DTRACE_PROBE(hotspot_jni, ReleaseStringUTFChars__return); |
duke@435 | 2058 | JNI_END |
duke@435 | 2059 | |
duke@435 | 2060 | |
duke@435 | 2061 | JNI_QUICK_ENTRY(jsize, jni_GetArrayLength(JNIEnv *env, jarray array)) |
duke@435 | 2062 | JNIWrapper("GetArrayLength"); |
duke@435 | 2063 | DTRACE_PROBE2(hotspot_jni, GetArrayLength__entry, env, array); |
duke@435 | 2064 | arrayOop a = arrayOop(JNIHandles::resolve_non_null(array)); |
duke@435 | 2065 | assert(a->is_array(), "must be array"); |
duke@435 | 2066 | jsize ret = a->length(); |
duke@435 | 2067 | DTRACE_PROBE1(hotspot_jni, GetArrayLength__return, ret); |
duke@435 | 2068 | return ret; |
duke@435 | 2069 | JNI_END |
duke@435 | 2070 | |
duke@435 | 2071 | |
duke@435 | 2072 | // |
duke@435 | 2073 | // Object Array Operations |
duke@435 | 2074 | // |
duke@435 | 2075 | |
duke@435 | 2076 | DT_RETURN_MARK_DECL(NewObjectArray, jobjectArray); |
duke@435 | 2077 | |
duke@435 | 2078 | JNI_ENTRY(jobjectArray, jni_NewObjectArray(JNIEnv *env, jsize length, jclass elementClass, jobject initialElement)) |
duke@435 | 2079 | JNIWrapper("NewObjectArray"); |
duke@435 | 2080 | DTRACE_PROBE4(hotspot_jni, NewObjectArray__entry, env, length, elementClass, initialElement); |
duke@435 | 2081 | jobjectArray ret = NULL; |
duke@435 | 2082 | DT_RETURN_MARK(NewObjectArray, jobjectArray, (const jobjectArray&)ret); |
duke@435 | 2083 | KlassHandle ek(THREAD, java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(elementClass))); |
duke@435 | 2084 | klassOop ako = Klass::cast(ek())->array_klass(CHECK_NULL); |
duke@435 | 2085 | KlassHandle ak = KlassHandle(THREAD, ako); |
duke@435 | 2086 | objArrayKlass::cast(ak())->initialize(CHECK_NULL); |
duke@435 | 2087 | objArrayOop result = objArrayKlass::cast(ak())->allocate(length, CHECK_NULL); |
duke@435 | 2088 | oop initial_value = JNIHandles::resolve(initialElement); |
duke@435 | 2089 | if (initial_value != NULL) { // array already initialized with NULL |
duke@435 | 2090 | for (int index = 0; index < length; index++) { |
duke@435 | 2091 | result->obj_at_put(index, initial_value); |
duke@435 | 2092 | } |
duke@435 | 2093 | } |
duke@435 | 2094 | ret = (jobjectArray) JNIHandles::make_local(env, result); |
duke@435 | 2095 | return ret; |
duke@435 | 2096 | JNI_END |
duke@435 | 2097 | |
duke@435 | 2098 | DT_RETURN_MARK_DECL(GetObjectArrayElement, jobject); |
duke@435 | 2099 | |
duke@435 | 2100 | JNI_ENTRY(jobject, jni_GetObjectArrayElement(JNIEnv *env, jobjectArray array, jsize index)) |
duke@435 | 2101 | JNIWrapper("GetObjectArrayElement"); |
duke@435 | 2102 | DTRACE_PROBE3(hotspot_jni, GetObjectArrayElement__entry, env, array, index); |
duke@435 | 2103 | jobject ret = NULL; |
duke@435 | 2104 | DT_RETURN_MARK(GetObjectArrayElement, jobject, (const jobject&)ret); |
duke@435 | 2105 | objArrayOop a = objArrayOop(JNIHandles::resolve_non_null(array)); |
duke@435 | 2106 | if (a->is_within_bounds(index)) { |
duke@435 | 2107 | jobject ret = JNIHandles::make_local(env, a->obj_at(index)); |
duke@435 | 2108 | return ret; |
duke@435 | 2109 | } else { |
duke@435 | 2110 | char buf[jintAsStringSize]; |
duke@435 | 2111 | sprintf(buf, "%d", index); |
duke@435 | 2112 | THROW_MSG_0(vmSymbols::java_lang_ArrayIndexOutOfBoundsException(), buf); |
duke@435 | 2113 | } |
duke@435 | 2114 | JNI_END |
duke@435 | 2115 | |
duke@435 | 2116 | DT_VOID_RETURN_MARK_DECL(SetObjectArrayElement); |
duke@435 | 2117 | |
duke@435 | 2118 | JNI_ENTRY(void, jni_SetObjectArrayElement(JNIEnv *env, jobjectArray array, jsize index, jobject value)) |
duke@435 | 2119 | JNIWrapper("SetObjectArrayElement"); |
duke@435 | 2120 | DTRACE_PROBE4(hotspot_jni, SetObjectArrayElement__entry, env, array, index, value); |
duke@435 | 2121 | DT_VOID_RETURN_MARK(SetObjectArrayElement); |
duke@435 | 2122 | |
duke@435 | 2123 | objArrayOop a = objArrayOop(JNIHandles::resolve_non_null(array)); |
duke@435 | 2124 | oop v = JNIHandles::resolve(value); |
duke@435 | 2125 | if (a->is_within_bounds(index)) { |
duke@435 | 2126 | if (v == NULL || v->is_a(objArrayKlass::cast(a->klass())->element_klass())) { |
duke@435 | 2127 | a->obj_at_put(index, v); |
duke@435 | 2128 | } else { |
duke@435 | 2129 | THROW(vmSymbols::java_lang_ArrayStoreException()); |
duke@435 | 2130 | } |
duke@435 | 2131 | } else { |
duke@435 | 2132 | char buf[jintAsStringSize]; |
duke@435 | 2133 | sprintf(buf, "%d", index); |
duke@435 | 2134 | THROW_MSG(vmSymbols::java_lang_ArrayIndexOutOfBoundsException(), buf); |
duke@435 | 2135 | } |
duke@435 | 2136 | JNI_END |
duke@435 | 2137 | |
duke@435 | 2138 | |
duke@435 | 2139 | #define DEFINE_NEWSCALARARRAY(Return,Allocator,Result) \ |
duke@435 | 2140 | \ |
duke@435 | 2141 | DT_RETURN_MARK_DECL_FOR(Result, New##Result##Array, Return);\ |
duke@435 | 2142 | \ |
duke@435 | 2143 | JNI_ENTRY(Return, \ |
duke@435 | 2144 | jni_New##Result##Array(JNIEnv *env, jsize len)) \ |
duke@435 | 2145 | JNIWrapper("New" XSTR(Result) "Array"); \ |
duke@435 | 2146 | DTRACE_PROBE2(hotspot_jni, New##Result##Array__entry, env, len);\ |
duke@435 | 2147 | Return ret = NULL;\ |
duke@435 | 2148 | DT_RETURN_MARK_FOR(Result, New##Result##Array, Return, (const Return&)ret);\ |
duke@435 | 2149 | \ |
duke@435 | 2150 | oop obj= oopFactory::Allocator(len, CHECK_0); \ |
duke@435 | 2151 | ret = (Return) JNIHandles::make_local(env, obj); \ |
duke@435 | 2152 | return ret;\ |
duke@435 | 2153 | JNI_END |
duke@435 | 2154 | |
duke@435 | 2155 | DEFINE_NEWSCALARARRAY(jbooleanArray, new_boolArray, Boolean) |
duke@435 | 2156 | DEFINE_NEWSCALARARRAY(jbyteArray, new_byteArray, Byte) |
duke@435 | 2157 | DEFINE_NEWSCALARARRAY(jshortArray, new_shortArray, Short) |
duke@435 | 2158 | DEFINE_NEWSCALARARRAY(jcharArray, new_charArray, Char) |
duke@435 | 2159 | DEFINE_NEWSCALARARRAY(jintArray, new_intArray, Int) |
duke@435 | 2160 | DEFINE_NEWSCALARARRAY(jlongArray, new_longArray, Long) |
duke@435 | 2161 | DEFINE_NEWSCALARARRAY(jfloatArray, new_singleArray, Float) |
duke@435 | 2162 | DEFINE_NEWSCALARARRAY(jdoubleArray, new_doubleArray, Double) |
duke@435 | 2163 | |
duke@435 | 2164 | |
duke@435 | 2165 | // Return an address which will fault if the caller writes to it. |
duke@435 | 2166 | |
duke@435 | 2167 | static char* get_bad_address() { |
duke@435 | 2168 | static char* bad_address = NULL; |
duke@435 | 2169 | if (bad_address == NULL) { |
duke@435 | 2170 | size_t size = os::vm_allocation_granularity(); |
duke@435 | 2171 | bad_address = os::reserve_memory(size); |
duke@435 | 2172 | if (bad_address != NULL) { |
duke@435 | 2173 | os::commit_memory(bad_address, size); |
duke@435 | 2174 | os::protect_memory(bad_address, size); |
duke@435 | 2175 | } |
duke@435 | 2176 | } |
duke@435 | 2177 | return bad_address; |
duke@435 | 2178 | } |
duke@435 | 2179 | |
duke@435 | 2180 | |
duke@435 | 2181 | #define DEFINE_GETSCALARARRAYELEMENTS(ElementTag,ElementType,Result, Tag) \ |
duke@435 | 2182 | \ |
duke@435 | 2183 | JNI_QUICK_ENTRY(ElementType*, \ |
duke@435 | 2184 | jni_Get##Result##ArrayElements(JNIEnv *env, ElementType##Array array, jboolean *isCopy)) \ |
duke@435 | 2185 | JNIWrapper("Get" XSTR(Result) "ArrayElements"); \ |
duke@435 | 2186 | DTRACE_PROBE3(hotspot_jni, Get##Result##ArrayElements__entry, env, array, isCopy);\ |
duke@435 | 2187 | /* allocate an chunk of memory in c land */ \ |
duke@435 | 2188 | typeArrayOop a = typeArrayOop(JNIHandles::resolve_non_null(array)); \ |
duke@435 | 2189 | ElementType* result; \ |
duke@435 | 2190 | int len = a->length(); \ |
duke@435 | 2191 | if (len == 0) { \ |
duke@435 | 2192 | /* Empty array: legal but useless, can't return NULL. \ |
duke@435 | 2193 | * Return a pointer to something useless. \ |
duke@435 | 2194 | * Avoid asserts in typeArrayOop. */ \ |
duke@435 | 2195 | result = (ElementType*)get_bad_address(); \ |
duke@435 | 2196 | } else { \ |
duke@435 | 2197 | result = NEW_C_HEAP_ARRAY(ElementType, len); \ |
duke@435 | 2198 | /* copy the array to the c chunk */ \ |
duke@435 | 2199 | memcpy(result, a->Tag##_at_addr(0), sizeof(ElementType)*len); \ |
duke@435 | 2200 | } \ |
duke@435 | 2201 | if (isCopy) *isCopy = JNI_TRUE; \ |
duke@435 | 2202 | DTRACE_PROBE1(hotspot_jni, Get##Result##ArrayElements__return, result);\ |
duke@435 | 2203 | return result; \ |
duke@435 | 2204 | JNI_END |
duke@435 | 2205 | |
duke@435 | 2206 | DEFINE_GETSCALARARRAYELEMENTS(T_BOOLEAN, jboolean, Boolean, bool) |
duke@435 | 2207 | DEFINE_GETSCALARARRAYELEMENTS(T_BYTE, jbyte, Byte, byte) |
duke@435 | 2208 | DEFINE_GETSCALARARRAYELEMENTS(T_SHORT, jshort, Short, short) |
duke@435 | 2209 | DEFINE_GETSCALARARRAYELEMENTS(T_CHAR, jchar, Char, char) |
duke@435 | 2210 | DEFINE_GETSCALARARRAYELEMENTS(T_INT, jint, Int, int) |
duke@435 | 2211 | DEFINE_GETSCALARARRAYELEMENTS(T_LONG, jlong, Long, long) |
duke@435 | 2212 | DEFINE_GETSCALARARRAYELEMENTS(T_FLOAT, jfloat, Float, float) |
duke@435 | 2213 | DEFINE_GETSCALARARRAYELEMENTS(T_DOUBLE, jdouble, Double, double) |
duke@435 | 2214 | |
duke@435 | 2215 | |
duke@435 | 2216 | #define DEFINE_RELEASESCALARARRAYELEMENTS(ElementTag,ElementType,Result,Tag) \ |
duke@435 | 2217 | \ |
duke@435 | 2218 | JNI_QUICK_ENTRY(void, \ |
duke@435 | 2219 | jni_Release##Result##ArrayElements(JNIEnv *env, ElementType##Array array, \ |
duke@435 | 2220 | ElementType *buf, jint mode)) \ |
duke@435 | 2221 | JNIWrapper("Release" XSTR(Result) "ArrayElements"); \ |
duke@435 | 2222 | DTRACE_PROBE4(hotspot_jni, Release##Result##ArrayElements__entry, env, array, buf, mode);\ |
duke@435 | 2223 | typeArrayOop a = typeArrayOop(JNIHandles::resolve_non_null(array)); \ |
duke@435 | 2224 | int len = a->length(); \ |
duke@435 | 2225 | if (len != 0) { /* Empty array: nothing to free or copy. */ \ |
duke@435 | 2226 | if ((mode == 0) || (mode == JNI_COMMIT)) { \ |
duke@435 | 2227 | memcpy(a->Tag##_at_addr(0), buf, sizeof(ElementType)*len); \ |
duke@435 | 2228 | } \ |
duke@435 | 2229 | if ((mode == 0) || (mode == JNI_ABORT)) { \ |
duke@435 | 2230 | FreeHeap(buf); \ |
duke@435 | 2231 | } \ |
duke@435 | 2232 | } \ |
duke@435 | 2233 | DTRACE_PROBE(hotspot_jni, Release##Result##ArrayElements__return);\ |
duke@435 | 2234 | JNI_END |
duke@435 | 2235 | |
duke@435 | 2236 | DEFINE_RELEASESCALARARRAYELEMENTS(T_BOOLEAN, jboolean, Boolean, bool) |
duke@435 | 2237 | DEFINE_RELEASESCALARARRAYELEMENTS(T_BYTE, jbyte, Byte, byte) |
duke@435 | 2238 | DEFINE_RELEASESCALARARRAYELEMENTS(T_SHORT, jshort, Short, short) |
duke@435 | 2239 | DEFINE_RELEASESCALARARRAYELEMENTS(T_CHAR, jchar, Char, char) |
duke@435 | 2240 | DEFINE_RELEASESCALARARRAYELEMENTS(T_INT, jint, Int, int) |
duke@435 | 2241 | DEFINE_RELEASESCALARARRAYELEMENTS(T_LONG, jlong, Long, long) |
duke@435 | 2242 | DEFINE_RELEASESCALARARRAYELEMENTS(T_FLOAT, jfloat, Float, float) |
duke@435 | 2243 | DEFINE_RELEASESCALARARRAYELEMENTS(T_DOUBLE, jdouble, Double, double) |
duke@435 | 2244 | |
duke@435 | 2245 | #define DEFINE_GETSCALARARRAYREGION(ElementTag,ElementType,Result, Tag) \ |
duke@435 | 2246 | DT_VOID_RETURN_MARK_DECL(Get##Result##ArrayRegion);\ |
duke@435 | 2247 | \ |
duke@435 | 2248 | JNI_ENTRY(void, \ |
duke@435 | 2249 | jni_Get##Result##ArrayRegion(JNIEnv *env, ElementType##Array array, jsize start, \ |
duke@435 | 2250 | jsize len, ElementType *buf)) \ |
duke@435 | 2251 | JNIWrapper("Get" XSTR(Result) "ArrayRegion"); \ |
duke@435 | 2252 | DTRACE_PROBE5(hotspot_jni, Get##Result##ArrayRegion__entry, env, array, start, len, buf);\ |
duke@435 | 2253 | DT_VOID_RETURN_MARK(Get##Result##ArrayRegion); \ |
duke@435 | 2254 | typeArrayOop src = typeArrayOop(JNIHandles::resolve_non_null(array)); \ |
duke@435 | 2255 | if (start < 0 || len < 0 || ((unsigned int)start + (unsigned int)len > (unsigned int)src->length())) { \ |
duke@435 | 2256 | THROW(vmSymbols::java_lang_ArrayIndexOutOfBoundsException()); \ |
duke@435 | 2257 | } else { \ |
duke@435 | 2258 | if (len > 0) { \ |
duke@435 | 2259 | int sc = typeArrayKlass::cast(src->klass())->log2_element_size(); \ |
duke@435 | 2260 | memcpy((u_char*) buf, \ |
duke@435 | 2261 | (u_char*) src->Tag##_at_addr(start), \ |
duke@435 | 2262 | len << sc); \ |
duke@435 | 2263 | } \ |
duke@435 | 2264 | } \ |
duke@435 | 2265 | JNI_END |
duke@435 | 2266 | |
duke@435 | 2267 | DEFINE_GETSCALARARRAYREGION(T_BOOLEAN, jboolean,Boolean, bool) |
duke@435 | 2268 | DEFINE_GETSCALARARRAYREGION(T_BYTE, jbyte, Byte, byte) |
duke@435 | 2269 | DEFINE_GETSCALARARRAYREGION(T_SHORT, jshort, Short, short) |
duke@435 | 2270 | DEFINE_GETSCALARARRAYREGION(T_CHAR, jchar, Char, char) |
duke@435 | 2271 | DEFINE_GETSCALARARRAYREGION(T_INT, jint, Int, int) |
duke@435 | 2272 | DEFINE_GETSCALARARRAYREGION(T_LONG, jlong, Long, long) |
duke@435 | 2273 | DEFINE_GETSCALARARRAYREGION(T_FLOAT, jfloat, Float, float) |
duke@435 | 2274 | DEFINE_GETSCALARARRAYREGION(T_DOUBLE, jdouble, Double, double) |
duke@435 | 2275 | |
duke@435 | 2276 | #define DEFINE_SETSCALARARRAYREGION(ElementTag,ElementType,Result, Tag) \ |
duke@435 | 2277 | DT_VOID_RETURN_MARK_DECL(Set##Result##ArrayRegion);\ |
duke@435 | 2278 | \ |
duke@435 | 2279 | JNI_ENTRY(void, \ |
duke@435 | 2280 | jni_Set##Result##ArrayRegion(JNIEnv *env, ElementType##Array array, jsize start, \ |
duke@435 | 2281 | jsize len, const ElementType *buf)) \ |
duke@435 | 2282 | JNIWrapper("Set" XSTR(Result) "ArrayRegion"); \ |
duke@435 | 2283 | DTRACE_PROBE5(hotspot_jni, Set##Result##ArrayRegion__entry, env, array, start, len, buf);\ |
duke@435 | 2284 | DT_VOID_RETURN_MARK(Set##Result##ArrayRegion); \ |
duke@435 | 2285 | typeArrayOop dst = typeArrayOop(JNIHandles::resolve_non_null(array)); \ |
duke@435 | 2286 | if (start < 0 || len < 0 || ((unsigned int)start + (unsigned int)len > (unsigned int)dst->length())) { \ |
duke@435 | 2287 | THROW(vmSymbols::java_lang_ArrayIndexOutOfBoundsException()); \ |
duke@435 | 2288 | } else { \ |
duke@435 | 2289 | if (len > 0) { \ |
duke@435 | 2290 | int sc = typeArrayKlass::cast(dst->klass())->log2_element_size(); \ |
duke@435 | 2291 | memcpy((u_char*) dst->Tag##_at_addr(start), \ |
duke@435 | 2292 | (u_char*) buf, \ |
duke@435 | 2293 | len << sc); \ |
duke@435 | 2294 | } \ |
duke@435 | 2295 | } \ |
duke@435 | 2296 | JNI_END |
duke@435 | 2297 | |
duke@435 | 2298 | DEFINE_SETSCALARARRAYREGION(T_BOOLEAN, jboolean, Boolean, bool) |
duke@435 | 2299 | DEFINE_SETSCALARARRAYREGION(T_BYTE, jbyte, Byte, byte) |
duke@435 | 2300 | DEFINE_SETSCALARARRAYREGION(T_SHORT, jshort, Short, short) |
duke@435 | 2301 | DEFINE_SETSCALARARRAYREGION(T_CHAR, jchar, Char, char) |
duke@435 | 2302 | DEFINE_SETSCALARARRAYREGION(T_INT, jint, Int, int) |
duke@435 | 2303 | DEFINE_SETSCALARARRAYREGION(T_LONG, jlong, Long, long) |
duke@435 | 2304 | DEFINE_SETSCALARARRAYREGION(T_FLOAT, jfloat, Float, float) |
duke@435 | 2305 | DEFINE_SETSCALARARRAYREGION(T_DOUBLE, jdouble, Double, double) |
duke@435 | 2306 | |
duke@435 | 2307 | |
duke@435 | 2308 | // |
duke@435 | 2309 | // Interception of natives |
duke@435 | 2310 | // |
duke@435 | 2311 | |
duke@435 | 2312 | // The RegisterNatives call being attempted tried to register with a method that |
duke@435 | 2313 | // is not native. Ask JVM TI what prefixes have been specified. Then check |
duke@435 | 2314 | // to see if the native method is now wrapped with the prefixes. See the |
duke@435 | 2315 | // SetNativeMethodPrefix(es) functions in the JVM TI Spec for details. |
duke@435 | 2316 | static methodOop find_prefixed_native(KlassHandle k, |
duke@435 | 2317 | symbolHandle name, symbolHandle signature, TRAPS) { |
duke@435 | 2318 | ResourceMark rm(THREAD); |
duke@435 | 2319 | methodOop method; |
duke@435 | 2320 | int name_len = name->utf8_length(); |
duke@435 | 2321 | char* name_str = name->as_utf8(); |
duke@435 | 2322 | int prefix_count; |
duke@435 | 2323 | char** prefixes = JvmtiExport::get_all_native_method_prefixes(&prefix_count); |
duke@435 | 2324 | for (int i = 0; i < prefix_count; i++) { |
duke@435 | 2325 | char* prefix = prefixes[i]; |
duke@435 | 2326 | int prefix_len = (int)strlen(prefix); |
duke@435 | 2327 | |
duke@435 | 2328 | // try adding this prefix to the method name and see if it matches another method name |
duke@435 | 2329 | int trial_len = name_len + prefix_len; |
duke@435 | 2330 | char* trial_name_str = NEW_RESOURCE_ARRAY(char, trial_len + 1); |
duke@435 | 2331 | strcpy(trial_name_str, prefix); |
duke@435 | 2332 | strcat(trial_name_str, name_str); |
duke@435 | 2333 | symbolHandle trial_name(THREAD, SymbolTable::probe(trial_name_str, trial_len)); |
duke@435 | 2334 | if (trial_name.is_null()) { |
duke@435 | 2335 | continue; // no such symbol, so this prefix wasn't used, try the next prefix |
duke@435 | 2336 | } |
duke@435 | 2337 | method = Klass::cast(k())->lookup_method(trial_name(), signature()); |
duke@435 | 2338 | if (method == NULL) { |
duke@435 | 2339 | continue; // signature doesn't match, try the next prefix |
duke@435 | 2340 | } |
duke@435 | 2341 | if (method->is_native()) { |
duke@435 | 2342 | method->set_is_prefixed_native(); |
duke@435 | 2343 | return method; // wahoo, we found a prefixed version of the method, return it |
duke@435 | 2344 | } |
duke@435 | 2345 | // found as non-native, so prefix is good, add it, probably just need more prefixes |
duke@435 | 2346 | name_len = trial_len; |
duke@435 | 2347 | name_str = trial_name_str; |
duke@435 | 2348 | } |
duke@435 | 2349 | return NULL; // not found |
duke@435 | 2350 | } |
duke@435 | 2351 | |
duke@435 | 2352 | static bool register_native(KlassHandle k, symbolHandle name, symbolHandle signature, address entry, TRAPS) { |
duke@435 | 2353 | methodOop method = Klass::cast(k())->lookup_method(name(), signature()); |
duke@435 | 2354 | if (method == NULL) { |
duke@435 | 2355 | ResourceMark rm; |
duke@435 | 2356 | stringStream st; |
duke@435 | 2357 | st.print("Method %s name or signature does not match", |
duke@435 | 2358 | methodOopDesc::name_and_sig_as_C_string(Klass::cast(k()), name(), signature())); |
duke@435 | 2359 | THROW_MSG_(vmSymbols::java_lang_NoSuchMethodError(), st.as_string(), false); |
duke@435 | 2360 | } |
duke@435 | 2361 | if (!method->is_native()) { |
duke@435 | 2362 | // trying to register to a non-native method, see if a JVM TI agent has added prefix(es) |
duke@435 | 2363 | method = find_prefixed_native(k, name, signature, THREAD); |
duke@435 | 2364 | if (method == NULL) { |
duke@435 | 2365 | ResourceMark rm; |
duke@435 | 2366 | stringStream st; |
duke@435 | 2367 | st.print("Method %s is not declared as native", |
duke@435 | 2368 | methodOopDesc::name_and_sig_as_C_string(Klass::cast(k()), name(), signature())); |
duke@435 | 2369 | THROW_MSG_(vmSymbols::java_lang_NoSuchMethodError(), st.as_string(), false); |
duke@435 | 2370 | } |
duke@435 | 2371 | } |
duke@435 | 2372 | |
duke@435 | 2373 | if (entry != NULL) { |
duke@435 | 2374 | method->set_native_function(entry, |
duke@435 | 2375 | methodOopDesc::native_bind_event_is_interesting); |
duke@435 | 2376 | } else { |
duke@435 | 2377 | method->clear_native_function(); |
duke@435 | 2378 | } |
duke@435 | 2379 | if (PrintJNIResolving) { |
duke@435 | 2380 | ResourceMark rm(THREAD); |
duke@435 | 2381 | tty->print_cr("[Registering JNI native method %s.%s]", |
duke@435 | 2382 | Klass::cast(method->method_holder())->external_name(), |
duke@435 | 2383 | method->name()->as_C_string()); |
duke@435 | 2384 | } |
duke@435 | 2385 | return true; |
duke@435 | 2386 | } |
duke@435 | 2387 | |
duke@435 | 2388 | DT_RETURN_MARK_DECL(RegisterNatives, jint); |
duke@435 | 2389 | |
duke@435 | 2390 | JNI_ENTRY(jint, jni_RegisterNatives(JNIEnv *env, jclass clazz, |
duke@435 | 2391 | const JNINativeMethod *methods, |
duke@435 | 2392 | jint nMethods)) |
duke@435 | 2393 | JNIWrapper("RegisterNatives"); |
duke@435 | 2394 | DTRACE_PROBE4(hotspot_jni, RegisterNatives__entry, env, clazz, methods, nMethods); |
duke@435 | 2395 | jint ret = 0; |
duke@435 | 2396 | DT_RETURN_MARK(RegisterNatives, jint, (const jint&)ret); |
duke@435 | 2397 | |
duke@435 | 2398 | KlassHandle h_k(thread, java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(clazz))); |
duke@435 | 2399 | |
duke@435 | 2400 | for (int index = 0; index < nMethods; index++) { |
duke@435 | 2401 | const char* meth_name = methods[index].name; |
duke@435 | 2402 | const char* meth_sig = methods[index].signature; |
duke@435 | 2403 | int meth_name_len = (int)strlen(meth_name); |
duke@435 | 2404 | |
duke@435 | 2405 | // The class should have been loaded (we have an instance of the class |
duke@435 | 2406 | // passed in) so the method and signature should already be in the symbol |
duke@435 | 2407 | // table. If they're not there, the method doesn't exist. |
duke@435 | 2408 | symbolHandle name(THREAD, SymbolTable::probe(meth_name, meth_name_len)); |
duke@435 | 2409 | symbolHandle signature(THREAD, SymbolTable::probe(meth_sig, (int)strlen(meth_sig))); |
duke@435 | 2410 | |
duke@435 | 2411 | if (name.is_null() || signature.is_null()) { |
duke@435 | 2412 | ResourceMark rm; |
duke@435 | 2413 | stringStream st; |
duke@435 | 2414 | st.print("Method %s.%s%s not found", Klass::cast(h_k())->external_name(), meth_name, meth_sig); |
duke@435 | 2415 | // Must return negative value on failure |
duke@435 | 2416 | THROW_MSG_(vmSymbols::java_lang_NoSuchMethodError(), st.as_string(), -1); |
duke@435 | 2417 | } |
duke@435 | 2418 | |
duke@435 | 2419 | bool res = register_native(h_k, name, signature, |
duke@435 | 2420 | (address) methods[index].fnPtr, THREAD); |
duke@435 | 2421 | if (!res) { |
duke@435 | 2422 | ret = -1; |
duke@435 | 2423 | break; |
duke@435 | 2424 | } |
duke@435 | 2425 | } |
duke@435 | 2426 | return ret; |
duke@435 | 2427 | JNI_END |
duke@435 | 2428 | |
duke@435 | 2429 | |
duke@435 | 2430 | JNI_ENTRY(jint, jni_UnregisterNatives(JNIEnv *env, jclass clazz)) |
duke@435 | 2431 | JNIWrapper("UnregisterNatives"); |
duke@435 | 2432 | DTRACE_PROBE2(hotspot_jni, UnregisterNatives__entry, env, clazz); |
duke@435 | 2433 | klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(clazz)); |
duke@435 | 2434 | //%note jni_2 |
duke@435 | 2435 | if (Klass::cast(k)->oop_is_instance()) { |
duke@435 | 2436 | for (int index = 0; index < instanceKlass::cast(k)->methods()->length(); index++) { |
duke@435 | 2437 | methodOop m = methodOop(instanceKlass::cast(k)->methods()->obj_at(index)); |
duke@435 | 2438 | if (m->is_native()) { |
duke@435 | 2439 | m->clear_native_function(); |
duke@435 | 2440 | m->set_signature_handler(NULL); |
duke@435 | 2441 | } |
duke@435 | 2442 | } |
duke@435 | 2443 | } |
duke@435 | 2444 | DTRACE_PROBE1(hotspot_jni, UnregisterNatives__return, 0); |
duke@435 | 2445 | return 0; |
duke@435 | 2446 | JNI_END |
duke@435 | 2447 | |
duke@435 | 2448 | // |
duke@435 | 2449 | // Monitor functions |
duke@435 | 2450 | // |
duke@435 | 2451 | |
duke@435 | 2452 | DT_RETURN_MARK_DECL(MonitorEnter, jint); |
duke@435 | 2453 | |
duke@435 | 2454 | JNI_ENTRY(jint, jni_MonitorEnter(JNIEnv *env, jobject jobj)) |
duke@435 | 2455 | DTRACE_PROBE2(hotspot_jni, MonitorEnter__entry, env, jobj); |
duke@435 | 2456 | jint ret = JNI_ERR; |
duke@435 | 2457 | DT_RETURN_MARK(MonitorEnter, jint, (const jint&)ret); |
duke@435 | 2458 | |
duke@435 | 2459 | // If the object is null, we can't do anything with it |
duke@435 | 2460 | if (jobj == NULL) { |
duke@435 | 2461 | THROW_(vmSymbols::java_lang_NullPointerException(), JNI_ERR); |
duke@435 | 2462 | } |
duke@435 | 2463 | |
duke@435 | 2464 | Handle obj(thread, JNIHandles::resolve_non_null(jobj)); |
duke@435 | 2465 | ObjectSynchronizer::jni_enter(obj, CHECK_(JNI_ERR)); |
duke@435 | 2466 | ret = JNI_OK; |
duke@435 | 2467 | return ret; |
duke@435 | 2468 | JNI_END |
duke@435 | 2469 | |
duke@435 | 2470 | DT_RETURN_MARK_DECL(MonitorExit, jint); |
duke@435 | 2471 | |
duke@435 | 2472 | JNI_ENTRY(jint, jni_MonitorExit(JNIEnv *env, jobject jobj)) |
duke@435 | 2473 | DTRACE_PROBE2(hotspot_jni, MonitorExit__entry, env, jobj); |
duke@435 | 2474 | jint ret = JNI_ERR; |
duke@435 | 2475 | DT_RETURN_MARK(MonitorExit, jint, (const jint&)ret); |
duke@435 | 2476 | |
duke@435 | 2477 | // Don't do anything with a null object |
duke@435 | 2478 | if (jobj == NULL) { |
duke@435 | 2479 | THROW_(vmSymbols::java_lang_NullPointerException(), JNI_ERR); |
duke@435 | 2480 | } |
duke@435 | 2481 | |
duke@435 | 2482 | Handle obj(THREAD, JNIHandles::resolve_non_null(jobj)); |
duke@435 | 2483 | ObjectSynchronizer::jni_exit(obj(), CHECK_(JNI_ERR)); |
duke@435 | 2484 | |
duke@435 | 2485 | ret = JNI_OK; |
duke@435 | 2486 | return ret; |
duke@435 | 2487 | JNI_END |
duke@435 | 2488 | |
duke@435 | 2489 | // |
duke@435 | 2490 | // Extensions |
duke@435 | 2491 | // |
duke@435 | 2492 | |
duke@435 | 2493 | DT_VOID_RETURN_MARK_DECL(GetStringRegion); |
duke@435 | 2494 | |
duke@435 | 2495 | JNI_ENTRY(void, jni_GetStringRegion(JNIEnv *env, jstring string, jsize start, jsize len, jchar *buf)) |
duke@435 | 2496 | JNIWrapper("GetStringRegion"); |
duke@435 | 2497 | DTRACE_PROBE5(hotspot_jni, GetStringRegion__entry, env, string, start, len, buf); |
duke@435 | 2498 | DT_VOID_RETURN_MARK(GetStringRegion); |
duke@435 | 2499 | oop s = JNIHandles::resolve_non_null(string); |
duke@435 | 2500 | int s_len = java_lang_String::length(s); |
duke@435 | 2501 | if (start < 0 || len < 0 || start + len > s_len) { |
duke@435 | 2502 | THROW(vmSymbols::java_lang_StringIndexOutOfBoundsException()); |
duke@435 | 2503 | } else { |
duke@435 | 2504 | if (len > 0) { |
duke@435 | 2505 | int s_offset = java_lang_String::offset(s); |
duke@435 | 2506 | typeArrayOop s_value = java_lang_String::value(s); |
duke@435 | 2507 | memcpy(buf, s_value->char_at_addr(s_offset+start), sizeof(jchar)*len); |
duke@435 | 2508 | } |
duke@435 | 2509 | } |
duke@435 | 2510 | JNI_END |
duke@435 | 2511 | |
duke@435 | 2512 | DT_VOID_RETURN_MARK_DECL(GetStringUTFRegion); |
duke@435 | 2513 | |
duke@435 | 2514 | JNI_ENTRY(void, jni_GetStringUTFRegion(JNIEnv *env, jstring string, jsize start, jsize len, char *buf)) |
duke@435 | 2515 | JNIWrapper("GetStringUTFRegion"); |
duke@435 | 2516 | DTRACE_PROBE5(hotspot_jni, GetStringUTFRegion__entry, env, string, start, len, buf); |
duke@435 | 2517 | DT_VOID_RETURN_MARK(GetStringUTFRegion); |
duke@435 | 2518 | oop s = JNIHandles::resolve_non_null(string); |
duke@435 | 2519 | int s_len = java_lang_String::length(s); |
duke@435 | 2520 | if (start < 0 || len < 0 || start + len > s_len) { |
duke@435 | 2521 | THROW(vmSymbols::java_lang_StringIndexOutOfBoundsException()); |
duke@435 | 2522 | } else { |
duke@435 | 2523 | //%note jni_7 |
duke@435 | 2524 | if (len > 0) { |
duke@435 | 2525 | ResourceMark rm(THREAD); |
duke@435 | 2526 | char *utf_region = java_lang_String::as_utf8_string(s, start, len); |
duke@435 | 2527 | int utf_len = (int)strlen(utf_region); |
duke@435 | 2528 | memcpy(buf, utf_region, utf_len); |
duke@435 | 2529 | buf[utf_len] = 0; |
duke@435 | 2530 | } else { |
duke@435 | 2531 | // JDK null-terminates the buffer even in len is zero |
duke@435 | 2532 | if (buf != NULL) { |
duke@435 | 2533 | buf[0] = 0; |
duke@435 | 2534 | } |
duke@435 | 2535 | } |
duke@435 | 2536 | } |
duke@435 | 2537 | JNI_END |
duke@435 | 2538 | |
duke@435 | 2539 | |
duke@435 | 2540 | JNI_ENTRY(void*, jni_GetPrimitiveArrayCritical(JNIEnv *env, jarray array, jboolean *isCopy)) |
duke@435 | 2541 | JNIWrapper("GetPrimitiveArrayCritical"); |
duke@435 | 2542 | DTRACE_PROBE3(hotspot_jni, GetPrimitiveArrayCritical__entry, env, array, isCopy); |
duke@435 | 2543 | GC_locker::lock_critical(thread); |
duke@435 | 2544 | if (isCopy != NULL) { |
duke@435 | 2545 | *isCopy = JNI_FALSE; |
duke@435 | 2546 | } |
duke@435 | 2547 | oop a = JNIHandles::resolve_non_null(array); |
duke@435 | 2548 | assert(a->is_array(), "just checking"); |
duke@435 | 2549 | BasicType type; |
duke@435 | 2550 | if (a->is_objArray()) { |
duke@435 | 2551 | type = T_OBJECT; |
duke@435 | 2552 | } else { |
duke@435 | 2553 | type = typeArrayKlass::cast(a->klass())->element_type(); |
duke@435 | 2554 | } |
duke@435 | 2555 | void* ret = arrayOop(a)->base(type); |
duke@435 | 2556 | DTRACE_PROBE1(hotspot_jni, GetPrimitiveArrayCritical__return, ret); |
duke@435 | 2557 | return ret; |
duke@435 | 2558 | JNI_END |
duke@435 | 2559 | |
duke@435 | 2560 | |
duke@435 | 2561 | JNI_ENTRY(void, jni_ReleasePrimitiveArrayCritical(JNIEnv *env, jarray array, void *carray, jint mode)) |
duke@435 | 2562 | JNIWrapper("ReleasePrimitiveArrayCritical"); |
duke@435 | 2563 | DTRACE_PROBE4(hotspot_jni, ReleasePrimitiveArrayCritical__entry, env, array, carray, mode); |
duke@435 | 2564 | // The array, carray and mode arguments are ignored |
duke@435 | 2565 | GC_locker::unlock_critical(thread); |
duke@435 | 2566 | DTRACE_PROBE(hotspot_jni, ReleasePrimitiveArrayCritical__return); |
duke@435 | 2567 | JNI_END |
duke@435 | 2568 | |
duke@435 | 2569 | |
duke@435 | 2570 | JNI_ENTRY(const jchar*, jni_GetStringCritical(JNIEnv *env, jstring string, jboolean *isCopy)) |
duke@435 | 2571 | JNIWrapper("GetStringCritical"); |
duke@435 | 2572 | DTRACE_PROBE3(hotspot_jni, GetStringCritical__entry, env, string, isCopy); |
duke@435 | 2573 | GC_locker::lock_critical(thread); |
duke@435 | 2574 | if (isCopy != NULL) { |
duke@435 | 2575 | *isCopy = JNI_FALSE; |
duke@435 | 2576 | } |
duke@435 | 2577 | oop s = JNIHandles::resolve_non_null(string); |
duke@435 | 2578 | int s_len = java_lang_String::length(s); |
duke@435 | 2579 | typeArrayOop s_value = java_lang_String::value(s); |
duke@435 | 2580 | int s_offset = java_lang_String::offset(s); |
duke@435 | 2581 | const jchar* ret; |
duke@435 | 2582 | if (s_len > 0) { |
duke@435 | 2583 | ret = s_value->char_at_addr(s_offset); |
duke@435 | 2584 | } else { |
duke@435 | 2585 | ret = (jchar*) s_value->base(T_CHAR); |
duke@435 | 2586 | } |
duke@435 | 2587 | DTRACE_PROBE1(hotspot_jni, GetStringCritical__return, ret); |
duke@435 | 2588 | return ret; |
duke@435 | 2589 | JNI_END |
duke@435 | 2590 | |
duke@435 | 2591 | |
duke@435 | 2592 | JNI_ENTRY(void, jni_ReleaseStringCritical(JNIEnv *env, jstring str, const jchar *chars)) |
duke@435 | 2593 | JNIWrapper("ReleaseStringCritical"); |
duke@435 | 2594 | DTRACE_PROBE3(hotspot_jni, ReleaseStringCritical__entry, env, str, chars); |
duke@435 | 2595 | // The str and chars arguments are ignored |
duke@435 | 2596 | GC_locker::unlock_critical(thread); |
duke@435 | 2597 | DTRACE_PROBE(hotspot_jni, ReleaseStringCritical__return); |
duke@435 | 2598 | JNI_END |
duke@435 | 2599 | |
duke@435 | 2600 | |
duke@435 | 2601 | JNI_ENTRY(jweak, jni_NewWeakGlobalRef(JNIEnv *env, jobject ref)) |
duke@435 | 2602 | JNIWrapper("jni_NewWeakGlobalRef"); |
duke@435 | 2603 | DTRACE_PROBE2(hotspot_jni, NewWeakGlobalRef__entry, env, ref); |
duke@435 | 2604 | Handle ref_handle(thread, JNIHandles::resolve(ref)); |
duke@435 | 2605 | jweak ret = JNIHandles::make_weak_global(ref_handle); |
duke@435 | 2606 | DTRACE_PROBE1(hotspot_jni, NewWeakGlobalRef__return, ret); |
duke@435 | 2607 | return ret; |
duke@435 | 2608 | JNI_END |
duke@435 | 2609 | |
duke@435 | 2610 | // Must be JNI_ENTRY (with HandleMark) |
duke@435 | 2611 | JNI_ENTRY(void, jni_DeleteWeakGlobalRef(JNIEnv *env, jweak ref)) |
duke@435 | 2612 | JNIWrapper("jni_DeleteWeakGlobalRef"); |
duke@435 | 2613 | DTRACE_PROBE2(hotspot_jni, DeleteWeakGlobalRef__entry, env, ref); |
duke@435 | 2614 | JNIHandles::destroy_weak_global(ref); |
duke@435 | 2615 | DTRACE_PROBE(hotspot_jni, DeleteWeakGlobalRef__return); |
duke@435 | 2616 | JNI_END |
duke@435 | 2617 | |
duke@435 | 2618 | |
duke@435 | 2619 | JNI_QUICK_ENTRY(jboolean, jni_ExceptionCheck(JNIEnv *env)) |
duke@435 | 2620 | JNIWrapper("jni_ExceptionCheck"); |
duke@435 | 2621 | DTRACE_PROBE1(hotspot_jni, ExceptionCheck__entry, env); |
duke@435 | 2622 | jni_check_async_exceptions(thread); |
duke@435 | 2623 | jboolean ret = (thread->has_pending_exception()) ? JNI_TRUE : JNI_FALSE; |
duke@435 | 2624 | DTRACE_PROBE1(hotspot_jni, ExceptionCheck__return, ret); |
duke@435 | 2625 | return ret; |
duke@435 | 2626 | JNI_END |
duke@435 | 2627 | |
duke@435 | 2628 | |
duke@435 | 2629 | // Initialization state for three routines below relating to |
duke@435 | 2630 | // java.nio.DirectBuffers |
duke@435 | 2631 | static jint directBufferSupportInitializeStarted = 0; |
duke@435 | 2632 | static volatile jint directBufferSupportInitializeEnded = 0; |
duke@435 | 2633 | static volatile jint directBufferSupportInitializeFailed = 0; |
duke@435 | 2634 | static jclass bufferClass = NULL; |
duke@435 | 2635 | static jclass directBufferClass = NULL; |
duke@435 | 2636 | static jclass directByteBufferClass = NULL; |
duke@435 | 2637 | static jmethodID directByteBufferConstructor = NULL; |
duke@435 | 2638 | static jfieldID directBufferAddressField = NULL; |
duke@435 | 2639 | static jfieldID bufferCapacityField = NULL; |
duke@435 | 2640 | |
duke@435 | 2641 | static jclass lookupOne(JNIEnv* env, const char* name, TRAPS) { |
duke@435 | 2642 | Handle loader; // null (bootstrap) loader |
duke@435 | 2643 | Handle protection_domain; // null protection domain |
duke@435 | 2644 | |
duke@435 | 2645 | symbolHandle sym = oopFactory::new_symbol_handle(name, CHECK_NULL); |
duke@435 | 2646 | return find_class_from_class_loader(env, sym, true, loader, protection_domain, true, CHECK_NULL); |
duke@435 | 2647 | } |
duke@435 | 2648 | |
duke@435 | 2649 | // These lookups are done with the NULL (bootstrap) ClassLoader to |
duke@435 | 2650 | // circumvent any security checks that would be done by jni_FindClass. |
duke@435 | 2651 | JNI_ENTRY(bool, lookupDirectBufferClasses(JNIEnv* env)) |
duke@435 | 2652 | { |
duke@435 | 2653 | if ((bufferClass = lookupOne(env, "java/nio/Buffer", thread)) == NULL) { return false; } |
duke@435 | 2654 | if ((directBufferClass = lookupOne(env, "sun/nio/ch/DirectBuffer", thread)) == NULL) { return false; } |
duke@435 | 2655 | if ((directByteBufferClass = lookupOne(env, "java/nio/DirectByteBuffer", thread)) == NULL) { return false; } |
duke@435 | 2656 | return true; |
duke@435 | 2657 | } |
duke@435 | 2658 | JNI_END |
duke@435 | 2659 | |
duke@435 | 2660 | |
duke@435 | 2661 | static bool initializeDirectBufferSupport(JNIEnv* env, JavaThread* thread) { |
duke@435 | 2662 | if (directBufferSupportInitializeFailed) { |
duke@435 | 2663 | return false; |
duke@435 | 2664 | } |
duke@435 | 2665 | |
duke@435 | 2666 | if (Atomic::cmpxchg(1, &directBufferSupportInitializeStarted, 0) == 0) { |
duke@435 | 2667 | if (!lookupDirectBufferClasses(env)) { |
duke@435 | 2668 | directBufferSupportInitializeFailed = 1; |
duke@435 | 2669 | return false; |
duke@435 | 2670 | } |
duke@435 | 2671 | |
duke@435 | 2672 | // Make global references for these |
duke@435 | 2673 | bufferClass = (jclass) env->NewGlobalRef(bufferClass); |
duke@435 | 2674 | directBufferClass = (jclass) env->NewGlobalRef(directBufferClass); |
duke@435 | 2675 | directByteBufferClass = (jclass) env->NewGlobalRef(directByteBufferClass); |
duke@435 | 2676 | |
duke@435 | 2677 | // Get needed field and method IDs |
duke@435 | 2678 | directByteBufferConstructor = env->GetMethodID(directByteBufferClass, "<init>", "(JI)V"); |
duke@435 | 2679 | directBufferAddressField = env->GetFieldID(bufferClass, "address", "J"); |
duke@435 | 2680 | bufferCapacityField = env->GetFieldID(bufferClass, "capacity", "I"); |
duke@435 | 2681 | |
duke@435 | 2682 | if ((directByteBufferConstructor == NULL) || |
duke@435 | 2683 | (directBufferAddressField == NULL) || |
duke@435 | 2684 | (bufferCapacityField == NULL)) { |
duke@435 | 2685 | directBufferSupportInitializeFailed = 1; |
duke@435 | 2686 | return false; |
duke@435 | 2687 | } |
duke@435 | 2688 | |
duke@435 | 2689 | directBufferSupportInitializeEnded = 1; |
duke@435 | 2690 | } else { |
duke@435 | 2691 | ThreadInVMfromNative tivn(thread); // set state as yield_all can call os:sleep |
duke@435 | 2692 | while (!directBufferSupportInitializeEnded && !directBufferSupportInitializeFailed) { |
duke@435 | 2693 | os::yield_all(); |
duke@435 | 2694 | } |
duke@435 | 2695 | } |
duke@435 | 2696 | |
duke@435 | 2697 | return !directBufferSupportInitializeFailed; |
duke@435 | 2698 | } |
duke@435 | 2699 | |
duke@435 | 2700 | extern "C" jobject JNICALL jni_NewDirectByteBuffer(JNIEnv *env, void* address, jlong capacity) |
duke@435 | 2701 | { |
duke@435 | 2702 | // thread_from_jni_environment() will block if VM is gone. |
duke@435 | 2703 | JavaThread* thread = JavaThread::thread_from_jni_environment(env); |
duke@435 | 2704 | |
duke@435 | 2705 | JNIWrapper("jni_NewDirectByteBuffer"); |
duke@435 | 2706 | DTRACE_PROBE3(hotspot_jni, NewDirectByteBuffer__entry, env, address, capacity); |
duke@435 | 2707 | |
duke@435 | 2708 | if (!directBufferSupportInitializeEnded) { |
duke@435 | 2709 | if (!initializeDirectBufferSupport(env, thread)) { |
duke@435 | 2710 | DTRACE_PROBE1(hotspot_jni, NewDirectByteBuffer__return, NULL); |
duke@435 | 2711 | return NULL; |
duke@435 | 2712 | } |
duke@435 | 2713 | } |
duke@435 | 2714 | |
duke@435 | 2715 | // Being paranoid about accidental sign extension on address |
duke@435 | 2716 | jlong addr = (jlong) ((uintptr_t) address); |
duke@435 | 2717 | // NOTE that package-private DirectByteBuffer constructor currently |
duke@435 | 2718 | // takes int capacity |
duke@435 | 2719 | jint cap = (jint) capacity; |
duke@435 | 2720 | jobject ret = env->NewObject(directByteBufferClass, directByteBufferConstructor, addr, cap); |
duke@435 | 2721 | DTRACE_PROBE1(hotspot_jni, NewDirectByteBuffer__return, ret); |
duke@435 | 2722 | return ret; |
duke@435 | 2723 | } |
duke@435 | 2724 | |
duke@435 | 2725 | DT_RETURN_MARK_DECL(GetDirectBufferAddress, void*); |
duke@435 | 2726 | |
duke@435 | 2727 | extern "C" void* JNICALL jni_GetDirectBufferAddress(JNIEnv *env, jobject buf) |
duke@435 | 2728 | { |
duke@435 | 2729 | // thread_from_jni_environment() will block if VM is gone. |
duke@435 | 2730 | JavaThread* thread = JavaThread::thread_from_jni_environment(env); |
duke@435 | 2731 | |
duke@435 | 2732 | JNIWrapper("jni_GetDirectBufferAddress"); |
duke@435 | 2733 | DTRACE_PROBE2(hotspot_jni, GetDirectBufferAddress__entry, env, buf); |
duke@435 | 2734 | void* ret = NULL; |
duke@435 | 2735 | DT_RETURN_MARK(GetDirectBufferAddress, void*, (const void*&)ret); |
duke@435 | 2736 | |
duke@435 | 2737 | if (!directBufferSupportInitializeEnded) { |
duke@435 | 2738 | if (!initializeDirectBufferSupport(env, thread)) { |
duke@435 | 2739 | return 0; |
duke@435 | 2740 | } |
duke@435 | 2741 | } |
duke@435 | 2742 | |
duke@435 | 2743 | if ((buf != NULL) && (!env->IsInstanceOf(buf, directBufferClass))) { |
duke@435 | 2744 | return 0; |
duke@435 | 2745 | } |
duke@435 | 2746 | |
duke@435 | 2747 | ret = (void*)(intptr_t)env->GetLongField(buf, directBufferAddressField); |
duke@435 | 2748 | return ret; |
duke@435 | 2749 | } |
duke@435 | 2750 | |
duke@435 | 2751 | DT_RETURN_MARK_DECL(GetDirectBufferCapacity, jlong); |
duke@435 | 2752 | |
duke@435 | 2753 | extern "C" jlong JNICALL jni_GetDirectBufferCapacity(JNIEnv *env, jobject buf) |
duke@435 | 2754 | { |
duke@435 | 2755 | // thread_from_jni_environment() will block if VM is gone. |
duke@435 | 2756 | JavaThread* thread = JavaThread::thread_from_jni_environment(env); |
duke@435 | 2757 | |
duke@435 | 2758 | JNIWrapper("jni_GetDirectBufferCapacity"); |
duke@435 | 2759 | DTRACE_PROBE2(hotspot_jni, GetDirectBufferCapacity__entry, env, buf); |
duke@435 | 2760 | jlong ret = -1; |
duke@435 | 2761 | DT_RETURN_MARK(GetDirectBufferCapacity, jlong, (const jlong&)ret); |
duke@435 | 2762 | |
duke@435 | 2763 | if (!directBufferSupportInitializeEnded) { |
duke@435 | 2764 | if (!initializeDirectBufferSupport(env, thread)) { |
duke@435 | 2765 | ret = 0; |
duke@435 | 2766 | return ret; |
duke@435 | 2767 | } |
duke@435 | 2768 | } |
duke@435 | 2769 | |
duke@435 | 2770 | if (buf == NULL) { |
duke@435 | 2771 | return -1; |
duke@435 | 2772 | } |
duke@435 | 2773 | |
duke@435 | 2774 | if (!env->IsInstanceOf(buf, directBufferClass)) { |
duke@435 | 2775 | return -1; |
duke@435 | 2776 | } |
duke@435 | 2777 | |
duke@435 | 2778 | // NOTE that capacity is currently an int in the implementation |
duke@435 | 2779 | ret = env->GetIntField(buf, bufferCapacityField); |
duke@435 | 2780 | return ret; |
duke@435 | 2781 | } |
duke@435 | 2782 | |
duke@435 | 2783 | |
duke@435 | 2784 | JNI_LEAF(jint, jni_GetVersion(JNIEnv *env)) |
duke@435 | 2785 | JNIWrapper("GetVersion"); |
duke@435 | 2786 | DTRACE_PROBE1(hotspot_jni, GetVersion__entry, env); |
duke@435 | 2787 | DTRACE_PROBE1(hotspot_jni, GetVersion__return, CurrentVersion); |
duke@435 | 2788 | return CurrentVersion; |
duke@435 | 2789 | JNI_END |
duke@435 | 2790 | |
duke@435 | 2791 | extern struct JavaVM_ main_vm; |
duke@435 | 2792 | |
duke@435 | 2793 | JNI_LEAF(jint, jni_GetJavaVM(JNIEnv *env, JavaVM **vm)) |
duke@435 | 2794 | JNIWrapper("jni_GetJavaVM"); |
duke@435 | 2795 | DTRACE_PROBE2(hotspot_jni, GetJavaVM__entry, env, vm); |
duke@435 | 2796 | *vm = (JavaVM *)(&main_vm); |
duke@435 | 2797 | DTRACE_PROBE1(hotspot_jni, GetJavaVM__return, JNI_OK); |
duke@435 | 2798 | return JNI_OK; |
duke@435 | 2799 | JNI_END |
duke@435 | 2800 | |
duke@435 | 2801 | // Structure containing all jni functions |
duke@435 | 2802 | struct JNINativeInterface_ jni_NativeInterface = { |
duke@435 | 2803 | NULL, |
duke@435 | 2804 | NULL, |
duke@435 | 2805 | NULL, |
duke@435 | 2806 | |
duke@435 | 2807 | NULL, |
duke@435 | 2808 | |
duke@435 | 2809 | jni_GetVersion, |
duke@435 | 2810 | |
duke@435 | 2811 | jni_DefineClass, |
duke@435 | 2812 | jni_FindClass, |
duke@435 | 2813 | |
duke@435 | 2814 | jni_FromReflectedMethod, |
duke@435 | 2815 | jni_FromReflectedField, |
duke@435 | 2816 | |
duke@435 | 2817 | jni_ToReflectedMethod, |
duke@435 | 2818 | |
duke@435 | 2819 | jni_GetSuperclass, |
duke@435 | 2820 | jni_IsAssignableFrom, |
duke@435 | 2821 | |
duke@435 | 2822 | jni_ToReflectedField, |
duke@435 | 2823 | |
duke@435 | 2824 | jni_Throw, |
duke@435 | 2825 | jni_ThrowNew, |
duke@435 | 2826 | jni_ExceptionOccurred, |
duke@435 | 2827 | jni_ExceptionDescribe, |
duke@435 | 2828 | jni_ExceptionClear, |
duke@435 | 2829 | jni_FatalError, |
duke@435 | 2830 | |
duke@435 | 2831 | jni_PushLocalFrame, |
duke@435 | 2832 | jni_PopLocalFrame, |
duke@435 | 2833 | |
duke@435 | 2834 | jni_NewGlobalRef, |
duke@435 | 2835 | jni_DeleteGlobalRef, |
duke@435 | 2836 | jni_DeleteLocalRef, |
duke@435 | 2837 | jni_IsSameObject, |
duke@435 | 2838 | |
duke@435 | 2839 | jni_NewLocalRef, |
duke@435 | 2840 | jni_EnsureLocalCapacity, |
duke@435 | 2841 | |
duke@435 | 2842 | jni_AllocObject, |
duke@435 | 2843 | jni_NewObject, |
duke@435 | 2844 | jni_NewObjectV, |
duke@435 | 2845 | jni_NewObjectA, |
duke@435 | 2846 | |
duke@435 | 2847 | jni_GetObjectClass, |
duke@435 | 2848 | jni_IsInstanceOf, |
duke@435 | 2849 | |
duke@435 | 2850 | jni_GetMethodID, |
duke@435 | 2851 | |
duke@435 | 2852 | jni_CallObjectMethod, |
duke@435 | 2853 | jni_CallObjectMethodV, |
duke@435 | 2854 | jni_CallObjectMethodA, |
duke@435 | 2855 | jni_CallBooleanMethod, |
duke@435 | 2856 | jni_CallBooleanMethodV, |
duke@435 | 2857 | jni_CallBooleanMethodA, |
duke@435 | 2858 | jni_CallByteMethod, |
duke@435 | 2859 | jni_CallByteMethodV, |
duke@435 | 2860 | jni_CallByteMethodA, |
duke@435 | 2861 | jni_CallCharMethod, |
duke@435 | 2862 | jni_CallCharMethodV, |
duke@435 | 2863 | jni_CallCharMethodA, |
duke@435 | 2864 | jni_CallShortMethod, |
duke@435 | 2865 | jni_CallShortMethodV, |
duke@435 | 2866 | jni_CallShortMethodA, |
duke@435 | 2867 | jni_CallIntMethod, |
duke@435 | 2868 | jni_CallIntMethodV, |
duke@435 | 2869 | jni_CallIntMethodA, |
duke@435 | 2870 | jni_CallLongMethod, |
duke@435 | 2871 | jni_CallLongMethodV, |
duke@435 | 2872 | jni_CallLongMethodA, |
duke@435 | 2873 | jni_CallFloatMethod, |
duke@435 | 2874 | jni_CallFloatMethodV, |
duke@435 | 2875 | jni_CallFloatMethodA, |
duke@435 | 2876 | jni_CallDoubleMethod, |
duke@435 | 2877 | jni_CallDoubleMethodV, |
duke@435 | 2878 | jni_CallDoubleMethodA, |
duke@435 | 2879 | jni_CallVoidMethod, |
duke@435 | 2880 | jni_CallVoidMethodV, |
duke@435 | 2881 | jni_CallVoidMethodA, |
duke@435 | 2882 | |
duke@435 | 2883 | jni_CallNonvirtualObjectMethod, |
duke@435 | 2884 | jni_CallNonvirtualObjectMethodV, |
duke@435 | 2885 | jni_CallNonvirtualObjectMethodA, |
duke@435 | 2886 | jni_CallNonvirtualBooleanMethod, |
duke@435 | 2887 | jni_CallNonvirtualBooleanMethodV, |
duke@435 | 2888 | jni_CallNonvirtualBooleanMethodA, |
duke@435 | 2889 | jni_CallNonvirtualByteMethod, |
duke@435 | 2890 | jni_CallNonvirtualByteMethodV, |
duke@435 | 2891 | jni_CallNonvirtualByteMethodA, |
duke@435 | 2892 | jni_CallNonvirtualCharMethod, |
duke@435 | 2893 | jni_CallNonvirtualCharMethodV, |
duke@435 | 2894 | jni_CallNonvirtualCharMethodA, |
duke@435 | 2895 | jni_CallNonvirtualShortMethod, |
duke@435 | 2896 | jni_CallNonvirtualShortMethodV, |
duke@435 | 2897 | jni_CallNonvirtualShortMethodA, |
duke@435 | 2898 | jni_CallNonvirtualIntMethod, |
duke@435 | 2899 | jni_CallNonvirtualIntMethodV, |
duke@435 | 2900 | jni_CallNonvirtualIntMethodA, |
duke@435 | 2901 | jni_CallNonvirtualLongMethod, |
duke@435 | 2902 | jni_CallNonvirtualLongMethodV, |
duke@435 | 2903 | jni_CallNonvirtualLongMethodA, |
duke@435 | 2904 | jni_CallNonvirtualFloatMethod, |
duke@435 | 2905 | jni_CallNonvirtualFloatMethodV, |
duke@435 | 2906 | jni_CallNonvirtualFloatMethodA, |
duke@435 | 2907 | jni_CallNonvirtualDoubleMethod, |
duke@435 | 2908 | jni_CallNonvirtualDoubleMethodV, |
duke@435 | 2909 | jni_CallNonvirtualDoubleMethodA, |
duke@435 | 2910 | jni_CallNonvirtualVoidMethod, |
duke@435 | 2911 | jni_CallNonvirtualVoidMethodV, |
duke@435 | 2912 | jni_CallNonvirtualVoidMethodA, |
duke@435 | 2913 | |
duke@435 | 2914 | jni_GetFieldID, |
duke@435 | 2915 | |
duke@435 | 2916 | jni_GetObjectField, |
duke@435 | 2917 | jni_GetBooleanField, |
duke@435 | 2918 | jni_GetByteField, |
duke@435 | 2919 | jni_GetCharField, |
duke@435 | 2920 | jni_GetShortField, |
duke@435 | 2921 | jni_GetIntField, |
duke@435 | 2922 | jni_GetLongField, |
duke@435 | 2923 | jni_GetFloatField, |
duke@435 | 2924 | jni_GetDoubleField, |
duke@435 | 2925 | |
duke@435 | 2926 | jni_SetObjectField, |
duke@435 | 2927 | jni_SetBooleanField, |
duke@435 | 2928 | jni_SetByteField, |
duke@435 | 2929 | jni_SetCharField, |
duke@435 | 2930 | jni_SetShortField, |
duke@435 | 2931 | jni_SetIntField, |
duke@435 | 2932 | jni_SetLongField, |
duke@435 | 2933 | jni_SetFloatField, |
duke@435 | 2934 | jni_SetDoubleField, |
duke@435 | 2935 | |
duke@435 | 2936 | jni_GetStaticMethodID, |
duke@435 | 2937 | |
duke@435 | 2938 | jni_CallStaticObjectMethod, |
duke@435 | 2939 | jni_CallStaticObjectMethodV, |
duke@435 | 2940 | jni_CallStaticObjectMethodA, |
duke@435 | 2941 | jni_CallStaticBooleanMethod, |
duke@435 | 2942 | jni_CallStaticBooleanMethodV, |
duke@435 | 2943 | jni_CallStaticBooleanMethodA, |
duke@435 | 2944 | jni_CallStaticByteMethod, |
duke@435 | 2945 | jni_CallStaticByteMethodV, |
duke@435 | 2946 | jni_CallStaticByteMethodA, |
duke@435 | 2947 | jni_CallStaticCharMethod, |
duke@435 | 2948 | jni_CallStaticCharMethodV, |
duke@435 | 2949 | jni_CallStaticCharMethodA, |
duke@435 | 2950 | jni_CallStaticShortMethod, |
duke@435 | 2951 | jni_CallStaticShortMethodV, |
duke@435 | 2952 | jni_CallStaticShortMethodA, |
duke@435 | 2953 | jni_CallStaticIntMethod, |
duke@435 | 2954 | jni_CallStaticIntMethodV, |
duke@435 | 2955 | jni_CallStaticIntMethodA, |
duke@435 | 2956 | jni_CallStaticLongMethod, |
duke@435 | 2957 | jni_CallStaticLongMethodV, |
duke@435 | 2958 | jni_CallStaticLongMethodA, |
duke@435 | 2959 | jni_CallStaticFloatMethod, |
duke@435 | 2960 | jni_CallStaticFloatMethodV, |
duke@435 | 2961 | jni_CallStaticFloatMethodA, |
duke@435 | 2962 | jni_CallStaticDoubleMethod, |
duke@435 | 2963 | jni_CallStaticDoubleMethodV, |
duke@435 | 2964 | jni_CallStaticDoubleMethodA, |
duke@435 | 2965 | jni_CallStaticVoidMethod, |
duke@435 | 2966 | jni_CallStaticVoidMethodV, |
duke@435 | 2967 | jni_CallStaticVoidMethodA, |
duke@435 | 2968 | |
duke@435 | 2969 | jni_GetStaticFieldID, |
duke@435 | 2970 | |
duke@435 | 2971 | jni_GetStaticObjectField, |
duke@435 | 2972 | jni_GetStaticBooleanField, |
duke@435 | 2973 | jni_GetStaticByteField, |
duke@435 | 2974 | jni_GetStaticCharField, |
duke@435 | 2975 | jni_GetStaticShortField, |
duke@435 | 2976 | jni_GetStaticIntField, |
duke@435 | 2977 | jni_GetStaticLongField, |
duke@435 | 2978 | jni_GetStaticFloatField, |
duke@435 | 2979 | jni_GetStaticDoubleField, |
duke@435 | 2980 | |
duke@435 | 2981 | jni_SetStaticObjectField, |
duke@435 | 2982 | jni_SetStaticBooleanField, |
duke@435 | 2983 | jni_SetStaticByteField, |
duke@435 | 2984 | jni_SetStaticCharField, |
duke@435 | 2985 | jni_SetStaticShortField, |
duke@435 | 2986 | jni_SetStaticIntField, |
duke@435 | 2987 | jni_SetStaticLongField, |
duke@435 | 2988 | jni_SetStaticFloatField, |
duke@435 | 2989 | jni_SetStaticDoubleField, |
duke@435 | 2990 | |
duke@435 | 2991 | jni_NewString, |
duke@435 | 2992 | jni_GetStringLength, |
duke@435 | 2993 | jni_GetStringChars, |
duke@435 | 2994 | jni_ReleaseStringChars, |
duke@435 | 2995 | |
duke@435 | 2996 | jni_NewStringUTF, |
duke@435 | 2997 | jni_GetStringUTFLength, |
duke@435 | 2998 | jni_GetStringUTFChars, |
duke@435 | 2999 | jni_ReleaseStringUTFChars, |
duke@435 | 3000 | |
duke@435 | 3001 | jni_GetArrayLength, |
duke@435 | 3002 | |
duke@435 | 3003 | jni_NewObjectArray, |
duke@435 | 3004 | jni_GetObjectArrayElement, |
duke@435 | 3005 | jni_SetObjectArrayElement, |
duke@435 | 3006 | |
duke@435 | 3007 | jni_NewBooleanArray, |
duke@435 | 3008 | jni_NewByteArray, |
duke@435 | 3009 | jni_NewCharArray, |
duke@435 | 3010 | jni_NewShortArray, |
duke@435 | 3011 | jni_NewIntArray, |
duke@435 | 3012 | jni_NewLongArray, |
duke@435 | 3013 | jni_NewFloatArray, |
duke@435 | 3014 | jni_NewDoubleArray, |
duke@435 | 3015 | |
duke@435 | 3016 | jni_GetBooleanArrayElements, |
duke@435 | 3017 | jni_GetByteArrayElements, |
duke@435 | 3018 | jni_GetCharArrayElements, |
duke@435 | 3019 | jni_GetShortArrayElements, |
duke@435 | 3020 | jni_GetIntArrayElements, |
duke@435 | 3021 | jni_GetLongArrayElements, |
duke@435 | 3022 | jni_GetFloatArrayElements, |
duke@435 | 3023 | jni_GetDoubleArrayElements, |
duke@435 | 3024 | |
duke@435 | 3025 | jni_ReleaseBooleanArrayElements, |
duke@435 | 3026 | jni_ReleaseByteArrayElements, |
duke@435 | 3027 | jni_ReleaseCharArrayElements, |
duke@435 | 3028 | jni_ReleaseShortArrayElements, |
duke@435 | 3029 | jni_ReleaseIntArrayElements, |
duke@435 | 3030 | jni_ReleaseLongArrayElements, |
duke@435 | 3031 | jni_ReleaseFloatArrayElements, |
duke@435 | 3032 | jni_ReleaseDoubleArrayElements, |
duke@435 | 3033 | |
duke@435 | 3034 | jni_GetBooleanArrayRegion, |
duke@435 | 3035 | jni_GetByteArrayRegion, |
duke@435 | 3036 | jni_GetCharArrayRegion, |
duke@435 | 3037 | jni_GetShortArrayRegion, |
duke@435 | 3038 | jni_GetIntArrayRegion, |
duke@435 | 3039 | jni_GetLongArrayRegion, |
duke@435 | 3040 | jni_GetFloatArrayRegion, |
duke@435 | 3041 | jni_GetDoubleArrayRegion, |
duke@435 | 3042 | |
duke@435 | 3043 | jni_SetBooleanArrayRegion, |
duke@435 | 3044 | jni_SetByteArrayRegion, |
duke@435 | 3045 | jni_SetCharArrayRegion, |
duke@435 | 3046 | jni_SetShortArrayRegion, |
duke@435 | 3047 | jni_SetIntArrayRegion, |
duke@435 | 3048 | jni_SetLongArrayRegion, |
duke@435 | 3049 | jni_SetFloatArrayRegion, |
duke@435 | 3050 | jni_SetDoubleArrayRegion, |
duke@435 | 3051 | |
duke@435 | 3052 | jni_RegisterNatives, |
duke@435 | 3053 | jni_UnregisterNatives, |
duke@435 | 3054 | |
duke@435 | 3055 | jni_MonitorEnter, |
duke@435 | 3056 | jni_MonitorExit, |
duke@435 | 3057 | |
duke@435 | 3058 | jni_GetJavaVM, |
duke@435 | 3059 | |
duke@435 | 3060 | jni_GetStringRegion, |
duke@435 | 3061 | jni_GetStringUTFRegion, |
duke@435 | 3062 | |
duke@435 | 3063 | jni_GetPrimitiveArrayCritical, |
duke@435 | 3064 | jni_ReleasePrimitiveArrayCritical, |
duke@435 | 3065 | |
duke@435 | 3066 | jni_GetStringCritical, |
duke@435 | 3067 | jni_ReleaseStringCritical, |
duke@435 | 3068 | |
duke@435 | 3069 | jni_NewWeakGlobalRef, |
duke@435 | 3070 | jni_DeleteWeakGlobalRef, |
duke@435 | 3071 | |
duke@435 | 3072 | jni_ExceptionCheck, |
duke@435 | 3073 | |
duke@435 | 3074 | jni_NewDirectByteBuffer, |
duke@435 | 3075 | jni_GetDirectBufferAddress, |
duke@435 | 3076 | jni_GetDirectBufferCapacity, |
duke@435 | 3077 | |
duke@435 | 3078 | // New 1_6 features |
duke@435 | 3079 | |
duke@435 | 3080 | jni_GetObjectRefType |
duke@435 | 3081 | }; |
duke@435 | 3082 | |
duke@435 | 3083 | |
duke@435 | 3084 | // For jvmti use to modify jni function table. |
duke@435 | 3085 | // Java threads in native contiues to run until it is transitioned |
duke@435 | 3086 | // to VM at safepoint. Before the transition or before it is blocked |
duke@435 | 3087 | // for safepoint it may access jni function table. VM could crash if |
duke@435 | 3088 | // any java thread access the jni function table in the middle of memcpy. |
duke@435 | 3089 | // To avoid this each function pointers are copied automically. |
duke@435 | 3090 | void copy_jni_function_table(const struct JNINativeInterface_ *new_jni_NativeInterface) { |
duke@435 | 3091 | assert(SafepointSynchronize::is_at_safepoint(), "must be at safepoint"); |
duke@435 | 3092 | intptr_t *a = (intptr_t *) jni_functions(); |
duke@435 | 3093 | intptr_t *b = (intptr_t *) new_jni_NativeInterface; |
duke@435 | 3094 | for (uint i=0; i < sizeof(struct JNINativeInterface_)/sizeof(void *); i++) { |
duke@435 | 3095 | Atomic::store_ptr(*b++, a++); |
duke@435 | 3096 | } |
duke@435 | 3097 | } |
duke@435 | 3098 | |
duke@435 | 3099 | void quicken_jni_functions() { |
duke@435 | 3100 | // Replace Get<Primitive>Field with fast versions |
duke@435 | 3101 | if (UseFastJNIAccessors && !JvmtiExport::can_post_field_access() |
duke@435 | 3102 | && !VerifyJNIFields && !TraceJNICalls && !CountJNICalls && !CheckJNICalls |
duke@435 | 3103 | #if defined(_WINDOWS) && defined(IA32) && defined(COMPILER2) |
duke@435 | 3104 | // windows x86 currently needs SEH wrapper and the gain of the fast |
duke@435 | 3105 | // versions currently isn't certain for server vm on uniprocessor. |
duke@435 | 3106 | && os::is_MP() |
duke@435 | 3107 | #endif |
duke@435 | 3108 | ) { |
duke@435 | 3109 | address func; |
duke@435 | 3110 | func = JNI_FastGetField::generate_fast_get_boolean_field(); |
duke@435 | 3111 | if (func != (address)-1) { |
duke@435 | 3112 | jni_NativeInterface.GetBooleanField = (GetBooleanField_t)func; |
duke@435 | 3113 | } |
duke@435 | 3114 | func = JNI_FastGetField::generate_fast_get_byte_field(); |
duke@435 | 3115 | if (func != (address)-1) { |
duke@435 | 3116 | jni_NativeInterface.GetByteField = (GetByteField_t)func; |
duke@435 | 3117 | } |
duke@435 | 3118 | func = JNI_FastGetField::generate_fast_get_char_field(); |
duke@435 | 3119 | if (func != (address)-1) { |
duke@435 | 3120 | jni_NativeInterface.GetCharField = (GetCharField_t)func; |
duke@435 | 3121 | } |
duke@435 | 3122 | func = JNI_FastGetField::generate_fast_get_short_field(); |
duke@435 | 3123 | if (func != (address)-1) { |
duke@435 | 3124 | jni_NativeInterface.GetShortField = (GetShortField_t)func; |
duke@435 | 3125 | } |
duke@435 | 3126 | func = JNI_FastGetField::generate_fast_get_int_field(); |
duke@435 | 3127 | if (func != (address)-1) { |
duke@435 | 3128 | jni_NativeInterface.GetIntField = (GetIntField_t)func; |
duke@435 | 3129 | } |
duke@435 | 3130 | func = JNI_FastGetField::generate_fast_get_long_field(); |
duke@435 | 3131 | if (func != (address)-1) { |
duke@435 | 3132 | jni_NativeInterface.GetLongField = (GetLongField_t)func; |
duke@435 | 3133 | } |
duke@435 | 3134 | func = JNI_FastGetField::generate_fast_get_float_field(); |
duke@435 | 3135 | if (func != (address)-1) { |
duke@435 | 3136 | jni_NativeInterface.GetFloatField = (GetFloatField_t)func; |
duke@435 | 3137 | } |
duke@435 | 3138 | func = JNI_FastGetField::generate_fast_get_double_field(); |
duke@435 | 3139 | if (func != (address)-1) { |
duke@435 | 3140 | jni_NativeInterface.GetDoubleField = (GetDoubleField_t)func; |
duke@435 | 3141 | } |
duke@435 | 3142 | } |
duke@435 | 3143 | } |
duke@435 | 3144 | |
duke@435 | 3145 | // Returns the function structure |
duke@435 | 3146 | struct JNINativeInterface_* jni_functions() { |
duke@435 | 3147 | #ifndef JNICHECK_KERNEL |
duke@435 | 3148 | if (CheckJNICalls) return jni_functions_check(); |
duke@435 | 3149 | #else // JNICHECK_KERNEL |
duke@435 | 3150 | if (CheckJNICalls) warning("-Xcheck:jni is not supported in kernel vm."); |
duke@435 | 3151 | #endif // JNICHECK_KERNEL |
duke@435 | 3152 | return &jni_NativeInterface; |
duke@435 | 3153 | } |
duke@435 | 3154 | |
duke@435 | 3155 | // Returns the function structure |
duke@435 | 3156 | struct JNINativeInterface_* jni_functions_nocheck() { |
duke@435 | 3157 | return &jni_NativeInterface; |
duke@435 | 3158 | } |
duke@435 | 3159 | |
duke@435 | 3160 | |
duke@435 | 3161 | // Invocation API |
duke@435 | 3162 | |
duke@435 | 3163 | |
duke@435 | 3164 | // Forward declaration |
duke@435 | 3165 | extern const struct JNIInvokeInterface_ jni_InvokeInterface; |
duke@435 | 3166 | |
duke@435 | 3167 | // Global invocation API vars |
duke@435 | 3168 | volatile jint vm_created = 0; |
duke@435 | 3169 | // Indicate whether it is safe to recreate VM |
duke@435 | 3170 | volatile jint safe_to_recreate_vm = 1; |
duke@435 | 3171 | struct JavaVM_ main_vm = {&jni_InvokeInterface}; |
duke@435 | 3172 | |
duke@435 | 3173 | |
duke@435 | 3174 | #define JAVASTACKSIZE (400 * 1024) /* Default size of a thread java stack */ |
duke@435 | 3175 | #define PROCSTACKSIZE 0 /* 0 means default size in HPI */ |
duke@435 | 3176 | enum { VERIFY_NONE, VERIFY_REMOTE, VERIFY_ALL }; |
duke@435 | 3177 | |
duke@435 | 3178 | HS_DTRACE_PROBE_DECL1(hotspot_jni, GetDefaultJavaVMInitArgs__entry, void*); |
duke@435 | 3179 | DT_RETURN_MARK_DECL(GetDefaultJavaVMInitArgs, jint); |
duke@435 | 3180 | |
duke@435 | 3181 | _JNI_IMPORT_OR_EXPORT_ jint JNICALL JNI_GetDefaultJavaVMInitArgs(void *args_) { |
duke@435 | 3182 | HS_DTRACE_PROBE1(hotspot_jni, GetDefaultJavaVMInitArgs__entry, args_); |
duke@435 | 3183 | JDK1_1InitArgs *args = (JDK1_1InitArgs *)args_; |
duke@435 | 3184 | jint ret = JNI_ERR; |
duke@435 | 3185 | DT_RETURN_MARK(GetDefaultJavaVMInitArgs, jint, (const jint&)ret); |
duke@435 | 3186 | |
duke@435 | 3187 | if (Threads::is_supported_jni_version(args->version)) { |
duke@435 | 3188 | ret = JNI_OK; |
duke@435 | 3189 | } |
duke@435 | 3190 | // 1.1 style no longer supported in hotspot. |
duke@435 | 3191 | // According the JNI spec, we should update args->version on return. |
duke@435 | 3192 | // We also use the structure to communicate with launcher about default |
duke@435 | 3193 | // stack size. |
duke@435 | 3194 | if (args->version == JNI_VERSION_1_1) { |
duke@435 | 3195 | args->version = JNI_VERSION_1_2; |
duke@435 | 3196 | // javaStackSize is int in arguments structure |
duke@435 | 3197 | assert(jlong(ThreadStackSize) * K < INT_MAX, "integer overflow"); |
duke@435 | 3198 | args->javaStackSize = (jint)(ThreadStackSize * K); |
duke@435 | 3199 | } |
duke@435 | 3200 | return ret; |
duke@435 | 3201 | } |
duke@435 | 3202 | |
duke@435 | 3203 | HS_DTRACE_PROBE_DECL3(hotspot_jni, CreateJavaVM__entry, vm, penv, args); |
duke@435 | 3204 | DT_RETURN_MARK_DECL(CreateJavaVM, jint); |
duke@435 | 3205 | |
duke@435 | 3206 | _JNI_IMPORT_OR_EXPORT_ jint JNICALL JNI_CreateJavaVM(JavaVM **vm, void **penv, void *args) { |
duke@435 | 3207 | HS_DTRACE_PROBE3(hotspot_jni, CreateJavaVM__entry, vm, penv, args); |
duke@435 | 3208 | |
duke@435 | 3209 | jint result = JNI_ERR; |
duke@435 | 3210 | DT_RETURN_MARK(CreateJavaVM, jint, (const jint&)result); |
duke@435 | 3211 | |
duke@435 | 3212 | // At the moment it's only possible to have one Java VM, |
duke@435 | 3213 | // since some of the runtime state is in global variables. |
duke@435 | 3214 | |
duke@435 | 3215 | // We cannot use our mutex locks here, since they only work on |
duke@435 | 3216 | // Threads. We do an atomic compare and exchange to ensure only |
duke@435 | 3217 | // one thread can call this method at a time |
duke@435 | 3218 | |
duke@435 | 3219 | // We use Atomic::xchg rather than Atomic::add/dec since on some platforms |
duke@435 | 3220 | // the add/dec implementations are dependent on whether we are running |
duke@435 | 3221 | // on a multiprocessor, and at this stage of initialization the os::is_MP |
duke@435 | 3222 | // function used to determine this will always return false. Atomic::xchg |
duke@435 | 3223 | // does not have this problem. |
duke@435 | 3224 | if (Atomic::xchg(1, &vm_created) == 1) { |
duke@435 | 3225 | return JNI_ERR; // already created, or create attempt in progress |
duke@435 | 3226 | } |
duke@435 | 3227 | if (Atomic::xchg(0, &safe_to_recreate_vm) == 0) { |
duke@435 | 3228 | return JNI_ERR; // someone tried and failed and retry not allowed. |
duke@435 | 3229 | } |
duke@435 | 3230 | |
duke@435 | 3231 | assert(vm_created == 1, "vm_created is true during the creation"); |
duke@435 | 3232 | |
duke@435 | 3233 | /** |
duke@435 | 3234 | * Certain errors during initialization are recoverable and do not |
duke@435 | 3235 | * prevent this method from being called again at a later time |
duke@435 | 3236 | * (perhaps with different arguments). However, at a certain |
duke@435 | 3237 | * point during initialization if an error occurs we cannot allow |
duke@435 | 3238 | * this function to be called again (or it will crash). In those |
duke@435 | 3239 | * situations, the 'canTryAgain' flag is set to false, which atomically |
duke@435 | 3240 | * sets safe_to_recreate_vm to 1, such that any new call to |
duke@435 | 3241 | * JNI_CreateJavaVM will immediately fail using the above logic. |
duke@435 | 3242 | */ |
duke@435 | 3243 | bool can_try_again = true; |
duke@435 | 3244 | |
duke@435 | 3245 | result = Threads::create_vm((JavaVMInitArgs*) args, &can_try_again); |
duke@435 | 3246 | if (result == JNI_OK) { |
duke@435 | 3247 | JavaThread *thread = JavaThread::current(); |
duke@435 | 3248 | /* thread is thread_in_vm here */ |
duke@435 | 3249 | *vm = (JavaVM *)(&main_vm); |
duke@435 | 3250 | *(JNIEnv**)penv = thread->jni_environment(); |
duke@435 | 3251 | |
duke@435 | 3252 | // Tracks the time application was running before GC |
duke@435 | 3253 | RuntimeService::record_application_start(); |
duke@435 | 3254 | |
duke@435 | 3255 | // Notify JVMTI |
duke@435 | 3256 | if (JvmtiExport::should_post_thread_life()) { |
duke@435 | 3257 | JvmtiExport::post_thread_start(thread); |
duke@435 | 3258 | } |
duke@435 | 3259 | // Check if we should compile all classes on bootclasspath |
duke@435 | 3260 | NOT_PRODUCT(if (CompileTheWorld) ClassLoader::compile_the_world();) |
duke@435 | 3261 | // Since this is not a JVM_ENTRY we have to set the thread state manually before leaving. |
duke@435 | 3262 | ThreadStateTransition::transition_and_fence(thread, _thread_in_vm, _thread_in_native); |
duke@435 | 3263 | } else { |
duke@435 | 3264 | if (can_try_again) { |
duke@435 | 3265 | // reset safe_to_recreate_vm to 1 so that retrial would be possible |
duke@435 | 3266 | safe_to_recreate_vm = 1; |
duke@435 | 3267 | } |
duke@435 | 3268 | |
duke@435 | 3269 | // Creation failed. We must reset vm_created |
duke@435 | 3270 | *vm = 0; |
duke@435 | 3271 | *(JNIEnv**)penv = 0; |
duke@435 | 3272 | // reset vm_created last to avoid race condition. Use OrderAccess to |
duke@435 | 3273 | // control both compiler and architectural-based reordering. |
duke@435 | 3274 | OrderAccess::release_store(&vm_created, 0); |
duke@435 | 3275 | } |
duke@435 | 3276 | |
duke@435 | 3277 | return result; |
duke@435 | 3278 | } |
duke@435 | 3279 | |
duke@435 | 3280 | HS_DTRACE_PROBE_DECL3(hotspot_jni, GetCreatedJavaVMs__entry, \ |
duke@435 | 3281 | JavaVM**, jsize, jsize*); |
duke@435 | 3282 | HS_DTRACE_PROBE_DECL1(hotspot_jni, GetCreatedJavaVMs__return, jint); |
duke@435 | 3283 | |
duke@435 | 3284 | _JNI_IMPORT_OR_EXPORT_ jint JNICALL JNI_GetCreatedJavaVMs(JavaVM **vm_buf, jsize bufLen, jsize *numVMs) { |
duke@435 | 3285 | // See bug 4367188, the wrapper can sometimes cause VM crashes |
duke@435 | 3286 | // JNIWrapper("GetCreatedJavaVMs"); |
duke@435 | 3287 | HS_DTRACE_PROBE3(hotspot_jni, GetCreatedJavaVMs__entry, \ |
duke@435 | 3288 | vm_buf, bufLen, numVMs); |
duke@435 | 3289 | if (vm_created) { |
duke@435 | 3290 | if (numVMs != NULL) *numVMs = 1; |
duke@435 | 3291 | if (bufLen > 0) *vm_buf = (JavaVM *)(&main_vm); |
duke@435 | 3292 | } else { |
duke@435 | 3293 | if (numVMs != NULL) *numVMs = 0; |
duke@435 | 3294 | } |
duke@435 | 3295 | HS_DTRACE_PROBE1(hotspot_jni, GetCreatedJavaVMs__return, JNI_OK); |
duke@435 | 3296 | return JNI_OK; |
duke@435 | 3297 | } |
duke@435 | 3298 | |
duke@435 | 3299 | extern "C" { |
duke@435 | 3300 | |
duke@435 | 3301 | DT_RETURN_MARK_DECL(DestroyJavaVM, jint); |
duke@435 | 3302 | |
duke@435 | 3303 | jint JNICALL jni_DestroyJavaVM(JavaVM *vm) { |
duke@435 | 3304 | DTRACE_PROBE1(hotspot_jni, DestroyJavaVM__entry, vm); |
duke@435 | 3305 | jint res = JNI_ERR; |
duke@435 | 3306 | DT_RETURN_MARK(DestroyJavaVM, jint, (const jint&)res); |
duke@435 | 3307 | |
duke@435 | 3308 | if (!vm_created) { |
duke@435 | 3309 | res = JNI_ERR; |
duke@435 | 3310 | return res; |
duke@435 | 3311 | } |
duke@435 | 3312 | |
duke@435 | 3313 | JNIWrapper("DestroyJavaVM"); |
duke@435 | 3314 | JNIEnv *env; |
duke@435 | 3315 | JavaVMAttachArgs destroyargs; |
duke@435 | 3316 | destroyargs.version = CurrentVersion; |
duke@435 | 3317 | destroyargs.name = (char *)"DestroyJavaVM"; |
duke@435 | 3318 | destroyargs.group = NULL; |
duke@435 | 3319 | res = vm->AttachCurrentThread((void **)&env, (void *)&destroyargs); |
duke@435 | 3320 | if (res != JNI_OK) { |
duke@435 | 3321 | return res; |
duke@435 | 3322 | } |
duke@435 | 3323 | |
duke@435 | 3324 | // Since this is not a JVM_ENTRY we have to set the thread state manually before entering. |
duke@435 | 3325 | JavaThread* thread = JavaThread::current(); |
duke@435 | 3326 | ThreadStateTransition::transition_from_native(thread, _thread_in_vm); |
duke@435 | 3327 | if (Threads::destroy_vm()) { |
duke@435 | 3328 | // Should not change thread state, VM is gone |
duke@435 | 3329 | vm_created = false; |
duke@435 | 3330 | res = JNI_OK; |
duke@435 | 3331 | return res; |
duke@435 | 3332 | } else { |
duke@435 | 3333 | ThreadStateTransition::transition_and_fence(thread, _thread_in_vm, _thread_in_native); |
duke@435 | 3334 | res = JNI_ERR; |
duke@435 | 3335 | return res; |
duke@435 | 3336 | } |
duke@435 | 3337 | } |
duke@435 | 3338 | |
duke@435 | 3339 | |
duke@435 | 3340 | static jint attach_current_thread(JavaVM *vm, void **penv, void *_args, bool daemon) { |
duke@435 | 3341 | JavaVMAttachArgs *args = (JavaVMAttachArgs *) _args; |
duke@435 | 3342 | |
duke@435 | 3343 | // Check below commented out from JDK1.2fcs as well |
duke@435 | 3344 | /* |
duke@435 | 3345 | if (args && (args->version != JNI_VERSION_1_1 || args->version != JNI_VERSION_1_2)) { |
duke@435 | 3346 | return JNI_EVERSION; |
duke@435 | 3347 | } |
duke@435 | 3348 | */ |
duke@435 | 3349 | |
duke@435 | 3350 | Thread* t = ThreadLocalStorage::get_thread_slow(); |
duke@435 | 3351 | if (t != NULL) { |
duke@435 | 3352 | // If the thread has been attached this operation is a no-op |
duke@435 | 3353 | *(JNIEnv**)penv = ((JavaThread*) t)->jni_environment(); |
duke@435 | 3354 | return JNI_OK; |
duke@435 | 3355 | } |
duke@435 | 3356 | |
duke@435 | 3357 | // Create a thread and mark it as attaching so it will be skipped by the |
duke@435 | 3358 | // ThreadsListEnumerator - see CR 6404306 |
duke@435 | 3359 | JavaThread* thread = new JavaThread(true); |
duke@435 | 3360 | |
duke@435 | 3361 | // Set correct safepoint info. The thread is going to call into Java when |
duke@435 | 3362 | // initializing the Java level thread object. Hence, the correct state must |
duke@435 | 3363 | // be set in order for the Safepoint code to deal with it correctly. |
duke@435 | 3364 | thread->set_thread_state(_thread_in_vm); |
duke@435 | 3365 | // Must do this before initialize_thread_local_storage |
duke@435 | 3366 | thread->record_stack_base_and_size(); |
duke@435 | 3367 | thread->initialize_thread_local_storage(); |
duke@435 | 3368 | |
duke@435 | 3369 | if (!os::create_attached_thread(thread)) { |
duke@435 | 3370 | delete thread; |
duke@435 | 3371 | return JNI_ERR; |
duke@435 | 3372 | } |
duke@435 | 3373 | thread->initialize_tlab(); |
duke@435 | 3374 | |
duke@435 | 3375 | // Crucial that we do not have a safepoint check for this thread, since it has |
duke@435 | 3376 | // not been added to the Thread list yet. |
duke@435 | 3377 | { Threads_lock->lock_without_safepoint_check(); |
duke@435 | 3378 | // This must be inside this lock in order to get FullGCALot to work properly, i.e., to |
duke@435 | 3379 | // avoid this thread trying to do a GC before it is added to the thread-list |
duke@435 | 3380 | thread->set_active_handles(JNIHandleBlock::allocate_block()); |
duke@435 | 3381 | Threads::add(thread, daemon); |
duke@435 | 3382 | Threads_lock->unlock(); |
duke@435 | 3383 | } |
duke@435 | 3384 | // Create thread group and name info from attach arguments |
duke@435 | 3385 | oop group = NULL; |
duke@435 | 3386 | char* thread_name = NULL; |
duke@435 | 3387 | if (args != NULL && Threads::is_supported_jni_version(args->version)) { |
duke@435 | 3388 | group = JNIHandles::resolve(args->group); |
duke@435 | 3389 | thread_name = args->name; // may be NULL |
duke@435 | 3390 | } |
duke@435 | 3391 | if (group == NULL) group = Universe::main_thread_group(); |
duke@435 | 3392 | |
duke@435 | 3393 | // Create Java level thread object and attach it to this thread |
duke@435 | 3394 | bool attach_failed = false; |
duke@435 | 3395 | { |
duke@435 | 3396 | EXCEPTION_MARK; |
duke@435 | 3397 | HandleMark hm(THREAD); |
duke@435 | 3398 | Handle thread_group(THREAD, group); |
duke@435 | 3399 | thread->allocate_threadObj(thread_group, thread_name, daemon, THREAD); |
duke@435 | 3400 | if (HAS_PENDING_EXCEPTION) { |
duke@435 | 3401 | CLEAR_PENDING_EXCEPTION; |
duke@435 | 3402 | // cleanup outside the handle mark. |
duke@435 | 3403 | attach_failed = true; |
duke@435 | 3404 | } |
duke@435 | 3405 | } |
duke@435 | 3406 | |
duke@435 | 3407 | if (attach_failed) { |
duke@435 | 3408 | // Added missing cleanup |
duke@435 | 3409 | thread->cleanup_failed_attach_current_thread(); |
duke@435 | 3410 | return JNI_ERR; |
duke@435 | 3411 | } |
duke@435 | 3412 | |
duke@435 | 3413 | // mark the thread as no longer attaching |
duke@435 | 3414 | // this uses a fence to push the change through so we don't have |
duke@435 | 3415 | // to regrab the threads_lock |
duke@435 | 3416 | thread->set_attached(); |
duke@435 | 3417 | |
duke@435 | 3418 | // Enable stack overflow checks |
duke@435 | 3419 | thread->create_stack_guard_pages(); |
duke@435 | 3420 | |
duke@435 | 3421 | // Set java thread status. |
duke@435 | 3422 | java_lang_Thread::set_thread_status(thread->threadObj(), |
duke@435 | 3423 | java_lang_Thread::RUNNABLE); |
duke@435 | 3424 | |
duke@435 | 3425 | // Notify the debugger |
duke@435 | 3426 | if (JvmtiExport::should_post_thread_life()) { |
duke@435 | 3427 | JvmtiExport::post_thread_start(thread); |
duke@435 | 3428 | } |
duke@435 | 3429 | |
duke@435 | 3430 | *(JNIEnv**)penv = thread->jni_environment(); |
duke@435 | 3431 | |
duke@435 | 3432 | // Now leaving the VM, so change thread_state. This is normally automatically taken care |
duke@435 | 3433 | // of in the JVM_ENTRY. But in this situation we have to do it manually. Notice, that by |
duke@435 | 3434 | // using ThreadStateTransition::transition, we do a callback to the safepoint code if |
duke@435 | 3435 | // needed. |
duke@435 | 3436 | |
duke@435 | 3437 | ThreadStateTransition::transition_and_fence(thread, _thread_in_vm, _thread_in_native); |
duke@435 | 3438 | |
duke@435 | 3439 | // Perform any platform dependent FPU setup |
duke@435 | 3440 | os::setup_fpu(); |
duke@435 | 3441 | |
duke@435 | 3442 | return JNI_OK; |
duke@435 | 3443 | } |
duke@435 | 3444 | |
duke@435 | 3445 | |
duke@435 | 3446 | jint JNICALL jni_AttachCurrentThread(JavaVM *vm, void **penv, void *_args) { |
duke@435 | 3447 | DTRACE_PROBE3(hotspot_jni, AttachCurrentThread__entry, vm, penv, _args); |
duke@435 | 3448 | if (!vm_created) { |
duke@435 | 3449 | DTRACE_PROBE1(hotspot_jni, AttachCurrentThread__return, JNI_ERR); |
duke@435 | 3450 | return JNI_ERR; |
duke@435 | 3451 | } |
duke@435 | 3452 | |
duke@435 | 3453 | JNIWrapper("AttachCurrentThread"); |
duke@435 | 3454 | jint ret = attach_current_thread(vm, penv, _args, false); |
duke@435 | 3455 | DTRACE_PROBE1(hotspot_jni, AttachCurrentThread__return, ret); |
duke@435 | 3456 | return ret; |
duke@435 | 3457 | } |
duke@435 | 3458 | |
duke@435 | 3459 | |
duke@435 | 3460 | jint JNICALL jni_DetachCurrentThread(JavaVM *vm) { |
duke@435 | 3461 | DTRACE_PROBE1(hotspot_jni, DetachCurrentThread__entry, vm); |
duke@435 | 3462 | VM_Exit::block_if_vm_exited(); |
duke@435 | 3463 | |
duke@435 | 3464 | JNIWrapper("DetachCurrentThread"); |
duke@435 | 3465 | |
duke@435 | 3466 | // If the thread has been deattacted the operations is a no-op |
duke@435 | 3467 | if (ThreadLocalStorage::thread() == NULL) { |
duke@435 | 3468 | DTRACE_PROBE1(hotspot_jni, DetachCurrentThread__return, JNI_OK); |
duke@435 | 3469 | return JNI_OK; |
duke@435 | 3470 | } |
duke@435 | 3471 | |
duke@435 | 3472 | JavaThread* thread = JavaThread::current(); |
duke@435 | 3473 | if (thread->has_last_Java_frame()) { |
duke@435 | 3474 | DTRACE_PROBE1(hotspot_jni, DetachCurrentThread__return, JNI_ERR); |
duke@435 | 3475 | // Can't detach a thread that's running java, that can't work. |
duke@435 | 3476 | return JNI_ERR; |
duke@435 | 3477 | } |
duke@435 | 3478 | |
duke@435 | 3479 | // Safepoint support. Have to do call-back to safepoint code, if in the |
duke@435 | 3480 | // middel of a safepoint operation |
duke@435 | 3481 | ThreadStateTransition::transition_from_native(thread, _thread_in_vm); |
duke@435 | 3482 | |
duke@435 | 3483 | // XXX: Note that JavaThread::exit() call below removes the guards on the |
duke@435 | 3484 | // stack pages set up via enable_stack_{red,yellow}_zone() calls |
duke@435 | 3485 | // above in jni_AttachCurrentThread. Unfortunately, while the setting |
duke@435 | 3486 | // of the guards is visible in jni_AttachCurrentThread above, |
duke@435 | 3487 | // the removal of the guards is buried below in JavaThread::exit() |
duke@435 | 3488 | // here. The abstraction should be more symmetrically either exposed |
duke@435 | 3489 | // or hidden (e.g. it could probably be hidden in the same |
duke@435 | 3490 | // (platform-dependent) methods where we do alternate stack |
duke@435 | 3491 | // maintenance work?) |
duke@435 | 3492 | thread->exit(false, JavaThread::jni_detach); |
duke@435 | 3493 | delete thread; |
duke@435 | 3494 | |
duke@435 | 3495 | DTRACE_PROBE1(hotspot_jni, DetachCurrentThread__return, JNI_OK); |
duke@435 | 3496 | return JNI_OK; |
duke@435 | 3497 | } |
duke@435 | 3498 | |
duke@435 | 3499 | DT_RETURN_MARK_DECL(GetEnv, jint); |
duke@435 | 3500 | |
duke@435 | 3501 | jint JNICALL jni_GetEnv(JavaVM *vm, void **penv, jint version) { |
duke@435 | 3502 | DTRACE_PROBE3(hotspot_jni, GetEnv__entry, vm, penv, version); |
duke@435 | 3503 | jint ret = JNI_ERR; |
duke@435 | 3504 | DT_RETURN_MARK(GetEnv, jint, (const jint&)ret); |
duke@435 | 3505 | |
duke@435 | 3506 | if (!vm_created) { |
duke@435 | 3507 | *penv = NULL; |
duke@435 | 3508 | ret = JNI_EDETACHED; |
duke@435 | 3509 | return ret; |
duke@435 | 3510 | } |
duke@435 | 3511 | |
duke@435 | 3512 | if (JvmtiExport::is_jvmti_version(version)) { |
duke@435 | 3513 | ret = JvmtiExport::get_jvmti_interface(vm, penv, version); |
duke@435 | 3514 | return ret; |
duke@435 | 3515 | } |
duke@435 | 3516 | |
duke@435 | 3517 | #ifndef JVMPI_VERSION_1 |
duke@435 | 3518 | // need these in order to be polite about older agents |
duke@435 | 3519 | #define JVMPI_VERSION_1 ((jint)0x10000001) |
duke@435 | 3520 | #define JVMPI_VERSION_1_1 ((jint)0x10000002) |
duke@435 | 3521 | #define JVMPI_VERSION_1_2 ((jint)0x10000003) |
duke@435 | 3522 | #endif // !JVMPI_VERSION_1 |
duke@435 | 3523 | |
duke@435 | 3524 | Thread* thread = ThreadLocalStorage::thread(); |
duke@435 | 3525 | if (thread != NULL && thread->is_Java_thread()) { |
duke@435 | 3526 | if (Threads::is_supported_jni_version_including_1_1(version)) { |
duke@435 | 3527 | *(JNIEnv**)penv = ((JavaThread*) thread)->jni_environment(); |
duke@435 | 3528 | ret = JNI_OK; |
duke@435 | 3529 | return ret; |
duke@435 | 3530 | |
duke@435 | 3531 | } else if (version == JVMPI_VERSION_1 || |
duke@435 | 3532 | version == JVMPI_VERSION_1_1 || |
duke@435 | 3533 | version == JVMPI_VERSION_1_2) { |
duke@435 | 3534 | tty->print_cr("ERROR: JVMPI, an experimental interface, is no longer supported."); |
duke@435 | 3535 | tty->print_cr("Please use the supported interface: the JVM Tool Interface (JVM TI)."); |
duke@435 | 3536 | ret = JNI_EVERSION; |
duke@435 | 3537 | return ret; |
duke@435 | 3538 | } else if (JvmtiExport::is_jvmdi_version(version)) { |
duke@435 | 3539 | tty->print_cr("FATAL ERROR: JVMDI is no longer supported."); |
duke@435 | 3540 | tty->print_cr("Please use the supported interface: the JVM Tool Interface (JVM TI)."); |
duke@435 | 3541 | ret = JNI_EVERSION; |
duke@435 | 3542 | return ret; |
duke@435 | 3543 | } else { |
duke@435 | 3544 | *penv = NULL; |
duke@435 | 3545 | ret = JNI_EVERSION; |
duke@435 | 3546 | return ret; |
duke@435 | 3547 | } |
duke@435 | 3548 | } else { |
duke@435 | 3549 | *penv = NULL; |
duke@435 | 3550 | ret = JNI_EDETACHED; |
duke@435 | 3551 | return ret; |
duke@435 | 3552 | } |
duke@435 | 3553 | } |
duke@435 | 3554 | |
duke@435 | 3555 | |
duke@435 | 3556 | jint JNICALL jni_AttachCurrentThreadAsDaemon(JavaVM *vm, void **penv, void *_args) { |
duke@435 | 3557 | DTRACE_PROBE3(hotspot_jni, AttachCurrentThreadAsDaemon__entry, vm, penv, _args); |
duke@435 | 3558 | if (!vm_created) { |
duke@435 | 3559 | DTRACE_PROBE1(hotspot_jni, AttachCurrentThreadAsDaemon__return, JNI_ERR); |
duke@435 | 3560 | return JNI_ERR; |
duke@435 | 3561 | } |
duke@435 | 3562 | |
duke@435 | 3563 | JNIWrapper("AttachCurrentThreadAsDaemon"); |
duke@435 | 3564 | jint ret = attach_current_thread(vm, penv, _args, true); |
duke@435 | 3565 | DTRACE_PROBE1(hotspot_jni, AttachCurrentThreadAsDaemon__return, ret); |
duke@435 | 3566 | return ret; |
duke@435 | 3567 | } |
duke@435 | 3568 | |
duke@435 | 3569 | |
duke@435 | 3570 | } // End extern "C" |
duke@435 | 3571 | |
duke@435 | 3572 | const struct JNIInvokeInterface_ jni_InvokeInterface = { |
duke@435 | 3573 | NULL, |
duke@435 | 3574 | NULL, |
duke@435 | 3575 | NULL, |
duke@435 | 3576 | |
duke@435 | 3577 | jni_DestroyJavaVM, |
duke@435 | 3578 | jni_AttachCurrentThread, |
duke@435 | 3579 | jni_DetachCurrentThread, |
duke@435 | 3580 | jni_GetEnv, |
duke@435 | 3581 | jni_AttachCurrentThreadAsDaemon |
duke@435 | 3582 | }; |