1 /*
2 * Copyright (c) 1997, 2019, Oracle and/or its affiliates. All rights reserved.
3 * Copyright (c) 2012 Red Hat, Inc.
4 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
5 *
6 * This code is free software; you can redistribute it and/or modify it
7 * under the terms of the GNU General Public License version 2 only, as
8 * published by the Free Software Foundation.
9 *
10 * This code is distributed in the hope that it will be useful, but WITHOUT
11 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
12 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
13 * version 2 for more details (a copy is included in the LICENSE file that
14 * accompanied this code).
15 *
16 * You should have received a copy of the GNU General Public License version
17 * 2 along with this work; if not, write to the Free Software Foundation,
18 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
19 *
20 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
21 * or visit www.oracle.com if you need additional information or have any
22 * questions.
23 *
24 */
25
26 #include "precompiled.hpp"
27 #include "jni.h"
28 #include "jvm.h"
29 #include "ci/ciReplay.hpp"
30 #include "classfile/altHashing.hpp"
31 #include "classfile/classFileStream.hpp"
32 #include "classfile/classLoader.hpp"
33 #include "classfile/javaClasses.hpp"
34 #include "classfile/javaClasses.inline.hpp"
35 #include "classfile/modules.hpp"
36 #include "classfile/symbolTable.hpp"
37 #include "classfile/systemDictionary.hpp"
38 #include "classfile/vmSymbols.hpp"
39 #include "gc/shared/gcLocker.inline.hpp"
40 #include "interpreter/linkResolver.hpp"
41 #include "jfr/jfrEvents.hpp"
42 #include "jfr/support/jfrThreadId.hpp"
43 #include "logging/log.hpp"
44 #include "memory/allocation.hpp"
45 #include "memory/allocation.inline.hpp"
46 #include "memory/oopFactory.hpp"
47 #include "memory/resourceArea.hpp"
48 #include "memory/universe.hpp"
49 #include "oops/access.inline.hpp"
50 #include "oops/arrayOop.inline.hpp"
51 #include "oops/instanceKlass.hpp"
52 #include "oops/instanceOop.hpp"
53 #include "oops/markWord.hpp"
54 #include "oops/method.hpp"
55 #include "oops/objArrayKlass.hpp"
56 #include "oops/objArrayOop.inline.hpp"
57 #include "oops/oop.inline.hpp"
58 #include "oops/symbol.hpp"
59 #include "oops/typeArrayKlass.hpp"
60 #include "oops/typeArrayOop.inline.hpp"
61 #include "prims/jniCheck.hpp"
62 #include "prims/jniExport.hpp"
63 #include "prims/jniFastGetField.hpp"
64 #include "prims/jvm_misc.hpp"
65 #include "prims/jvmtiExport.hpp"
66 #include "prims/jvmtiThreadState.hpp"
67 #include "runtime/atomic.hpp"
68 #include "runtime/fieldDescriptor.inline.hpp"
69 #include "runtime/handles.inline.hpp"
70 #include "runtime/interfaceSupport.inline.hpp"
71 #include "runtime/java.hpp"
72 #include "runtime/javaCalls.hpp"
73 #include "runtime/jfieldIDWorkaround.hpp"
74 #include "runtime/jniHandles.inline.hpp"
75 #include "runtime/reflection.hpp"
76 #include "runtime/safepointVerifiers.hpp"
77 #include "runtime/sharedRuntime.hpp"
78 #include "runtime/signature.hpp"
79 #include "runtime/thread.inline.hpp"
80 #include "runtime/vmOperations.hpp"
81 #include "services/memTracker.hpp"
82 #include "services/runtimeService.hpp"
83 #include "utilities/defaultStream.hpp"
84 #include "utilities/dtrace.hpp"
85 #include "utilities/events.hpp"
86 #include "utilities/histogram.hpp"
87 #include "utilities/macros.hpp"
88 #include "utilities/vmError.hpp"
89 #if INCLUDE_JVMCI
90 #include "jvmci/jvmciCompiler.hpp"
91 #endif
92
93 static jint CurrentVersion = JNI_VERSION_10;
94
95 #ifdef _WIN32
96 extern LONG WINAPI topLevelExceptionFilter(_EXCEPTION_POINTERS* );
97 #endif
98
99 // The DT_RETURN_MARK macros create a scoped object to fire the dtrace
100 // '-return' probe regardless of the return path is taken out of the function.
101 // Methods that have multiple return paths use this to avoid having to
102 // instrument each return path. Methods that use CHECK or THROW must use this
103 // since those macros can cause an immedate uninstrumented return.
104 //
105 // In order to get the return value, a reference to the variable containing
106 // the return value must be passed to the contructor of the object, and
107 // the return value must be set before return (since the mark object has
108 // a reference to it).
109 //
110 // Example:
111 // DT_RETURN_MARK_DECL(SomeFunc, int);
112 // JNI_ENTRY(int, SomeFunc, ...)
113 // int return_value = 0;
114 // DT_RETURN_MARK(SomeFunc, int, (const int&)return_value);
115 // foo(CHECK_0)
116 // return_value = 5;
117 // return return_value;
118 // JNI_END
119 #define DT_RETURN_MARK_DECL(name, type, probe) \
120 DTRACE_ONLY( \
121 class DTraceReturnProbeMark_##name { \
122 public: \
123 const type& _ret_ref; \
124 DTraceReturnProbeMark_##name(const type& v) : _ret_ref(v) {} \
125 ~DTraceReturnProbeMark_##name() { \
126 probe; \
127 } \
128 } \
129 )
130 // Void functions are simpler since there's no return value
131 #define DT_VOID_RETURN_MARK_DECL(name, probe) \
132 DTRACE_ONLY( \
133 class DTraceReturnProbeMark_##name { \
134 public: \
135 ~DTraceReturnProbeMark_##name() { \
136 probe; \
137 } \
138 } \
139 )
140
141 // Place these macros in the function to mark the return. Non-void
142 // functions need the type and address of the return value.
143 #define DT_RETURN_MARK(name, type, ref) \
144 DTRACE_ONLY( DTraceReturnProbeMark_##name dtrace_return_mark(ref) )
145 #define DT_VOID_RETURN_MARK(name) \
146 DTRACE_ONLY( DTraceReturnProbeMark_##name dtrace_return_mark )
147
148
149 // Use these to select distinct code for floating-point vs. non-floating point
150 // situations. Used from within common macros where we need slightly
151 // different behavior for Float/Double
152 #define FP_SELECT_Boolean(intcode, fpcode) intcode
153 #define FP_SELECT_Byte(intcode, fpcode) intcode
154 #define FP_SELECT_Char(intcode, fpcode) intcode
155 #define FP_SELECT_Short(intcode, fpcode) intcode
156 #define FP_SELECT_Object(intcode, fpcode) intcode
157 #define FP_SELECT_Int(intcode, fpcode) intcode
158 #define FP_SELECT_Long(intcode, fpcode) intcode
159 #define FP_SELECT_Float(intcode, fpcode) fpcode
160 #define FP_SELECT_Double(intcode, fpcode) fpcode
161 #define FP_SELECT(TypeName, intcode, fpcode) \
162 FP_SELECT_##TypeName(intcode, fpcode)
163
164 // Choose DT_RETURN_MARK macros based on the type: float/double -> void
165 // (dtrace doesn't do FP yet)
166 #define DT_RETURN_MARK_DECL_FOR(TypeName, name, type, probe) \
167 FP_SELECT(TypeName, \
168 DT_RETURN_MARK_DECL(name, type, probe), DT_VOID_RETURN_MARK_DECL(name, probe) )
169 #define DT_RETURN_MARK_FOR(TypeName, name, type, ref) \
170 FP_SELECT(TypeName, \
171 DT_RETURN_MARK(name, type, ref), DT_VOID_RETURN_MARK(name) )
172
173
174 // out-of-line helpers for class jfieldIDWorkaround:
175
176 bool jfieldIDWorkaround::is_valid_jfieldID(Klass* k, jfieldID id) {
177 if (jfieldIDWorkaround::is_instance_jfieldID(k, id)) {
178 uintptr_t as_uint = (uintptr_t) id;
179 intptr_t offset = raw_instance_offset(id);
180 if (is_checked_jfieldID(id)) {
181 if (!klass_hash_ok(k, id)) {
182 return false;
183 }
184 }
185 return InstanceKlass::cast(k)->contains_field_offset(offset);
186 } else {
187 JNIid* result = (JNIid*) id;
188 #ifdef ASSERT
189 return result != NULL && result->is_static_field_id();
190 #else
191 return result != NULL;
192 #endif
193 }
194 }
195
196
197 intptr_t jfieldIDWorkaround::encode_klass_hash(Klass* k, intptr_t offset) {
198 if (offset <= small_offset_mask) {
199 Klass* field_klass = k;
200 Klass* super_klass = field_klass->super();
201 // With compressed oops the most super class with nonstatic fields would
202 // be the owner of fields embedded in the header.
203 while (InstanceKlass::cast(super_klass)->has_nonstatic_fields() &&
204 InstanceKlass::cast(super_klass)->contains_field_offset(offset)) {
205 field_klass = super_klass; // super contains the field also
206 super_klass = field_klass->super();
207 }
208 debug_only(NoSafepointVerifier nosafepoint;)
209 uintptr_t klass_hash = field_klass->identity_hash();
210 return ((klass_hash & klass_mask) << klass_shift) | checked_mask_in_place;
211 } else {
212 #if 0
213 #ifndef PRODUCT
214 {
215 ResourceMark rm;
216 warning("VerifyJNIFields: long offset %d in %s", offset, k->external_name());
217 }
218 #endif
219 #endif
220 return 0;
221 }
222 }
223
224 bool jfieldIDWorkaround::klass_hash_ok(Klass* k, jfieldID id) {
225 uintptr_t as_uint = (uintptr_t) id;
226 intptr_t klass_hash = (as_uint >> klass_shift) & klass_mask;
227 do {
228 debug_only(NoSafepointVerifier nosafepoint;)
229 // Could use a non-blocking query for identity_hash here...
230 if ((k->identity_hash() & klass_mask) == klass_hash)
231 return true;
232 k = k->super();
233 } while (k != NULL);
234 return false;
235 }
236
237 void jfieldIDWorkaround::verify_instance_jfieldID(Klass* k, jfieldID id) {
238 guarantee(jfieldIDWorkaround::is_instance_jfieldID(k, id), "must be an instance field" );
239 uintptr_t as_uint = (uintptr_t) id;
240 intptr_t offset = raw_instance_offset(id);
241 if (VerifyJNIFields) {
242 if (is_checked_jfieldID(id)) {
243 guarantee(klass_hash_ok(k, id),
244 "Bug in native code: jfieldID class must match object");
245 } else {
246 #if 0
247 #ifndef PRODUCT
248 if (Verbose) {
249 ResourceMark rm;
250 warning("VerifyJNIFields: unverified offset %d for %s", offset, k->external_name());
251 }
252 #endif
253 #endif
254 }
255 }
256 guarantee(InstanceKlass::cast(k)->contains_field_offset(offset),
257 "Bug in native code: jfieldID offset must address interior of object");
258 }
259
260 // Wrapper to trace JNI functions
261
262 #ifdef ASSERT
263 Histogram* JNIHistogram;
264 static volatile int JNIHistogram_lock = 0;
265
266 class JNIHistogramElement : public HistogramElement {
267 public:
268 JNIHistogramElement(const char* name);
269 };
270
271 JNIHistogramElement::JNIHistogramElement(const char* elementName) {
272 _name = elementName;
273 uintx count = 0;
274
275 while (Atomic::cmpxchg(&JNIHistogram_lock, 0, 1) != 0) {
276 while (Atomic::load_acquire(&JNIHistogram_lock) != 0) {
277 count +=1;
278 if ( (WarnOnStalledSpinLock > 0)
279 && (count % WarnOnStalledSpinLock == 0)) {
280 warning("JNIHistogram_lock seems to be stalled");
281 }
282 }
283 }
284
285
286 if(JNIHistogram == NULL)
287 JNIHistogram = new Histogram("JNI Call Counts",100);
288
289 JNIHistogram->add_element(this);
290 Atomic::dec(&JNIHistogram_lock);
291 }
292
293 #define JNICountWrapper(arg) \
294 static JNIHistogramElement* e = new JNIHistogramElement(arg); \
295 /* There is a MT-race condition in VC++. So we need to make sure that that e has been initialized */ \
296 if (e != NULL) e->increment_count()
297 #define JNIWrapper(arg) JNICountWrapper(arg);
298 #else
299 #define JNIWrapper(arg)
300 #endif
301
302
303 // Implementation of JNI entries
304
305 DT_RETURN_MARK_DECL(DefineClass, jclass
306 , HOTSPOT_JNI_DEFINECLASS_RETURN(_ret_ref));
307
308 JNI_ENTRY(jclass, jni_DefineClass(JNIEnv *env, const char *name, jobject loaderRef,
309 const jbyte *buf, jsize bufLen))
310 JNIWrapper("DefineClass");
311
312 HOTSPOT_JNI_DEFINECLASS_ENTRY(
313 env, (char*) name, loaderRef, (char*) buf, bufLen);
314
315 jclass cls = NULL;
316 DT_RETURN_MARK(DefineClass, jclass, (const jclass&)cls);
317
318 TempNewSymbol class_name = NULL;
319 // Since exceptions can be thrown, class initialization can take place
320 // if name is NULL no check for class name in .class stream has to be made.
321 if (name != NULL) {
322 const int str_len = (int)strlen(name);
323 if (str_len > Symbol::max_length()) {
324 // It's impossible to create this class; the name cannot fit
325 // into the constant pool.
326 Exceptions::fthrow(THREAD_AND_LOCATION,
327 vmSymbols::java_lang_NoClassDefFoundError(),
328 "Class name exceeds maximum length of %d: %s",
329 Symbol::max_length(),
330 name);
331 return 0;
332 }
333 class_name = SymbolTable::new_symbol(name);
334 }
335 ResourceMark rm(THREAD);
336 ClassFileStream st((u1*)buf, bufLen, NULL, ClassFileStream::verify);
337 Handle class_loader (THREAD, JNIHandles::resolve(loaderRef));
338
339 if (UsePerfData && !class_loader.is_null()) {
340 // check whether the current caller thread holds the lock or not.
341 // If not, increment the corresponding counter
342 if (ObjectSynchronizer::
343 query_lock_ownership((JavaThread*)THREAD, class_loader) !=
344 ObjectSynchronizer::owner_self) {
345 ClassLoader::sync_JNIDefineClassLockFreeCounter()->inc();
346 }
347 }
348 Klass* k = SystemDictionary::resolve_from_stream(class_name,
349 class_loader,
350 Handle(),
351 &st,
352 CHECK_NULL);
353
354 if (log_is_enabled(Debug, class, resolve) && k != NULL) {
355 trace_class_resolution(k);
356 }
357
358 cls = (jclass)JNIHandles::make_local(
359 env, k->java_mirror());
360 return cls;
361 JNI_END
362
363
364
365 DT_RETURN_MARK_DECL(FindClass, jclass
366 , HOTSPOT_JNI_FINDCLASS_RETURN(_ret_ref));
367
368 JNI_ENTRY(jclass, jni_FindClass(JNIEnv *env, const char *name))
369 JNIWrapper("FindClass");
370
371 HOTSPOT_JNI_FINDCLASS_ENTRY(env, (char *)name);
372
373 jclass result = NULL;
374 DT_RETURN_MARK(FindClass, jclass, (const jclass&)result);
375
376 // Sanity check the name: it cannot be null or larger than the maximum size
377 // name we can fit in the constant pool.
378 if (name == NULL) {
379 THROW_MSG_0(vmSymbols::java_lang_NoClassDefFoundError(), "No class name given");
380 }
381 if ((int)strlen(name) > Symbol::max_length()) {
382 Exceptions::fthrow(THREAD_AND_LOCATION,
383 vmSymbols::java_lang_NoClassDefFoundError(),
384 "Class name exceeds maximum length of %d: %s",
385 Symbol::max_length(),
386 name);
387 return 0;
388 }
389
390 //%note jni_3
391 Handle protection_domain;
392 // Find calling class
393 Klass* k = thread->security_get_caller_class(0);
394 // default to the system loader when no context
395 Handle loader(THREAD, SystemDictionary::java_system_loader());
396 if (k != NULL) {
397 // Special handling to make sure JNI_OnLoad and JNI_OnUnload are executed
398 // in the correct class context.
399 if (k->class_loader() == NULL &&
400 k->name() == vmSymbols::java_lang_ClassLoader_NativeLibrary()) {
401 JavaValue result(T_OBJECT);
402 JavaCalls::call_static(&result, k,
403 vmSymbols::getFromClass_name(),
404 vmSymbols::void_class_signature(),
405 CHECK_NULL);
406 // When invoked from JNI_OnLoad, NativeLibrary::getFromClass returns
407 // a non-NULL Class object. When invoked from JNI_OnUnload,
408 // it will return NULL to indicate no context.
409 oop mirror = (oop) result.get_jobject();
410 if (mirror != NULL) {
411 Klass* fromClass = java_lang_Class::as_Klass(mirror);
412 loader = Handle(THREAD, fromClass->class_loader());
413 protection_domain = Handle(THREAD, fromClass->protection_domain());
414 }
415 } else {
416 loader = Handle(THREAD, k->class_loader());
417 }
418 }
419
420 TempNewSymbol sym = SymbolTable::new_symbol(name);
421 result = find_class_from_class_loader(env, sym, true, loader,
422 protection_domain, true, thread);
423
424 if (log_is_enabled(Debug, class, resolve) && result != NULL) {
425 trace_class_resolution(java_lang_Class::as_Klass(JNIHandles::resolve_non_null(result)));
426 }
427
428 return result;
429 JNI_END
430
431 DT_RETURN_MARK_DECL(FromReflectedMethod, jmethodID
432 , HOTSPOT_JNI_FROMREFLECTEDMETHOD_RETURN((uintptr_t)_ret_ref));
433
434 JNI_ENTRY(jmethodID, jni_FromReflectedMethod(JNIEnv *env, jobject method))
435 JNIWrapper("FromReflectedMethod");
436
437 HOTSPOT_JNI_FROMREFLECTEDMETHOD_ENTRY(env, method);
438
439 jmethodID ret = NULL;
440 DT_RETURN_MARK(FromReflectedMethod, jmethodID, (const jmethodID&)ret);
441
442 // method is a handle to a java.lang.reflect.Method object
443 oop reflected = JNIHandles::resolve_non_null(method);
444 oop mirror = NULL;
445 int slot = 0;
446
447 if (reflected->klass() == SystemDictionary::reflect_Constructor_klass()) {
448 mirror = java_lang_reflect_Constructor::clazz(reflected);
449 slot = java_lang_reflect_Constructor::slot(reflected);
450 } else {
451 assert(reflected->klass() == SystemDictionary::reflect_Method_klass(), "wrong type");
452 mirror = java_lang_reflect_Method::clazz(reflected);
453 slot = java_lang_reflect_Method::slot(reflected);
454 }
455 Klass* k1 = java_lang_Class::as_Klass(mirror);
456
457 // Make sure class is initialized before handing id's out to methods
458 k1->initialize(CHECK_NULL);
459 Method* m = InstanceKlass::cast(k1)->method_with_idnum(slot);
460 ret = m==NULL? NULL : m->jmethod_id(); // return NULL if reflected method deleted
461 return ret;
462 JNI_END
463
464 DT_RETURN_MARK_DECL(FromReflectedField, jfieldID
465 , HOTSPOT_JNI_FROMREFLECTEDFIELD_RETURN((uintptr_t)_ret_ref));
466
467 JNI_ENTRY(jfieldID, jni_FromReflectedField(JNIEnv *env, jobject field))
468 JNIWrapper("FromReflectedField");
469
470 HOTSPOT_JNI_FROMREFLECTEDFIELD_ENTRY(env, field);
471
472 jfieldID ret = NULL;
473 DT_RETURN_MARK(FromReflectedField, jfieldID, (const jfieldID&)ret);
474
475 // field is a handle to a java.lang.reflect.Field object
476 oop reflected = JNIHandles::resolve_non_null(field);
477 oop mirror = java_lang_reflect_Field::clazz(reflected);
478 Klass* k1 = java_lang_Class::as_Klass(mirror);
479 int slot = java_lang_reflect_Field::slot(reflected);
480 int modifiers = java_lang_reflect_Field::modifiers(reflected);
481
482 // Make sure class is initialized before handing id's out to fields
483 k1->initialize(CHECK_NULL);
484
485 // First check if this is a static field
486 if (modifiers & JVM_ACC_STATIC) {
487 intptr_t offset = InstanceKlass::cast(k1)->field_offset( slot );
488 JNIid* id = InstanceKlass::cast(k1)->jni_id_for(offset);
489 assert(id != NULL, "corrupt Field object");
490 debug_only(id->set_is_static_field_id();)
491 // A jfieldID for a static field is a JNIid specifying the field holder and the offset within the Klass*
492 ret = jfieldIDWorkaround::to_static_jfieldID(id);
493 return ret;
494 }
495
496 // The slot is the index of the field description in the field-array
497 // The jfieldID is the offset of the field within the object
498 // It may also have hash bits for k, if VerifyJNIFields is turned on.
499 intptr_t offset = InstanceKlass::cast(k1)->field_offset( slot );
500 assert(InstanceKlass::cast(k1)->contains_field_offset(offset), "stay within object");
501 ret = jfieldIDWorkaround::to_instance_jfieldID(k1, offset);
502 return ret;
503 JNI_END
504
505
506 DT_RETURN_MARK_DECL(ToReflectedMethod, jobject
507 , HOTSPOT_JNI_TOREFLECTEDMETHOD_RETURN(_ret_ref));
508
509 JNI_ENTRY(jobject, jni_ToReflectedMethod(JNIEnv *env, jclass cls, jmethodID method_id, jboolean isStatic))
510 JNIWrapper("ToReflectedMethod");
511
512 HOTSPOT_JNI_TOREFLECTEDMETHOD_ENTRY(env, cls, (uintptr_t) method_id, isStatic);
513
514 jobject ret = NULL;
515 DT_RETURN_MARK(ToReflectedMethod, jobject, (const jobject&)ret);
516
517 methodHandle m (THREAD, Method::resolve_jmethod_id(method_id));
518 assert(m->is_static() == (isStatic != 0), "jni_ToReflectedMethod access flags doesn't match");
519 oop reflection_method;
520 if (m->is_initializer()) {
521 reflection_method = Reflection::new_constructor(m, CHECK_NULL);
522 } else {
523 reflection_method = Reflection::new_method(m, false, CHECK_NULL);
524 }
525 ret = JNIHandles::make_local(env, reflection_method);
526 return ret;
527 JNI_END
528
529 DT_RETURN_MARK_DECL(GetSuperclass, jclass
530 , HOTSPOT_JNI_GETSUPERCLASS_RETURN(_ret_ref));
531
532 JNI_ENTRY(jclass, jni_GetSuperclass(JNIEnv *env, jclass sub))
533 JNIWrapper("GetSuperclass");
534
535 HOTSPOT_JNI_GETSUPERCLASS_ENTRY(env, sub);
536
537 jclass obj = NULL;
538 DT_RETURN_MARK(GetSuperclass, jclass, (const jclass&)obj);
539
540 oop mirror = JNIHandles::resolve_non_null(sub);
541 // primitive classes return NULL
542 if (java_lang_Class::is_primitive(mirror)) return NULL;
543
544 // Rules of Class.getSuperClass as implemented by KLass::java_super:
545 // arrays return Object
546 // interfaces return NULL
547 // proper classes return Klass::super()
548 Klass* k = java_lang_Class::as_Klass(mirror);
549 if (k->is_interface()) return NULL;
550
551 // return mirror for superclass
552 Klass* super = k->java_super();
553 // super2 is the value computed by the compiler's getSuperClass intrinsic:
554 debug_only(Klass* super2 = ( k->is_array_klass()
555 ? SystemDictionary::Object_klass()
556 : k->super() ) );
557 assert(super == super2,
558 "java_super computation depends on interface, array, other super");
559 obj = (super == NULL) ? NULL : (jclass) JNIHandles::make_local(super->java_mirror());
560 return obj;
561 JNI_END
562
563 JNI_ENTRY_NO_PRESERVE(jboolean, jni_IsAssignableFrom(JNIEnv *env, jclass sub, jclass super))
564 JNIWrapper("IsSubclassOf");
565
566 HOTSPOT_JNI_ISASSIGNABLEFROM_ENTRY(env, sub, super);
567
568 oop sub_mirror = JNIHandles::resolve_non_null(sub);
569 oop super_mirror = JNIHandles::resolve_non_null(super);
570 if (java_lang_Class::is_primitive(sub_mirror) ||
571 java_lang_Class::is_primitive(super_mirror)) {
572 jboolean ret = (sub_mirror == super_mirror);
573
574 HOTSPOT_JNI_ISASSIGNABLEFROM_RETURN(ret);
575 return ret;
576 }
577 Klass* sub_klass = java_lang_Class::as_Klass(sub_mirror);
578 Klass* super_klass = java_lang_Class::as_Klass(super_mirror);
579 assert(sub_klass != NULL && super_klass != NULL, "invalid arguments to jni_IsAssignableFrom");
580 jboolean ret = sub_klass->is_subtype_of(super_klass) ?
581 JNI_TRUE : JNI_FALSE;
582
583 HOTSPOT_JNI_ISASSIGNABLEFROM_RETURN(ret);
584 return ret;
585 JNI_END
586
587
588 DT_RETURN_MARK_DECL(Throw, jint
589 , HOTSPOT_JNI_THROW_RETURN(_ret_ref));
590
591 JNI_ENTRY(jint, jni_Throw(JNIEnv *env, jthrowable obj))
592 JNIWrapper("Throw");
593
594 HOTSPOT_JNI_THROW_ENTRY(env, obj);
595
596 jint ret = JNI_OK;
597 DT_RETURN_MARK(Throw, jint, (const jint&)ret);
598
599 THROW_OOP_(JNIHandles::resolve(obj), JNI_OK);
600 ShouldNotReachHere();
601 return 0; // Mute compiler.
602 JNI_END
603
604
605 DT_RETURN_MARK_DECL(ThrowNew, jint
606 , HOTSPOT_JNI_THROWNEW_RETURN(_ret_ref));
607
608 JNI_ENTRY(jint, jni_ThrowNew(JNIEnv *env, jclass clazz, const char *message))
609 JNIWrapper("ThrowNew");
610
611 HOTSPOT_JNI_THROWNEW_ENTRY(env, clazz, (char *) message);
612
613 jint ret = JNI_OK;
614 DT_RETURN_MARK(ThrowNew, jint, (const jint&)ret);
615
616 InstanceKlass* k = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz)));
617 Symbol* name = k->name();
618 Handle class_loader (THREAD, k->class_loader());
619 Handle protection_domain (THREAD, k->protection_domain());
620 THROW_MSG_LOADER_(name, (char *)message, class_loader, protection_domain, JNI_OK);
621 ShouldNotReachHere();
622 return 0; // Mute compiler.
623 JNI_END
624
625
626 // JNI functions only transform a pending async exception to a synchronous
627 // exception in ExceptionOccurred and ExceptionCheck calls, since
628 // delivering an async exception in other places won't change the native
629 // code's control flow and would be harmful when native code further calls
630 // JNI functions with a pending exception. Async exception is also checked
631 // during the call, so ExceptionOccurred/ExceptionCheck won't return
632 // false but deliver the async exception at the very end during
633 // state transition.
634
635 static void jni_check_async_exceptions(JavaThread *thread) {
636 assert(thread == Thread::current(), "must be itself");
637 thread->check_and_handle_async_exceptions();
638 }
639
640 JNI_ENTRY_NO_PRESERVE(jthrowable, jni_ExceptionOccurred(JNIEnv *env))
641 JNIWrapper("ExceptionOccurred");
642
643 HOTSPOT_JNI_EXCEPTIONOCCURRED_ENTRY(env);
644
645 jni_check_async_exceptions(thread);
646 oop exception = thread->pending_exception();
647 jthrowable ret = (jthrowable) JNIHandles::make_local(env, exception);
648
649 HOTSPOT_JNI_EXCEPTIONOCCURRED_RETURN(ret);
650 return ret;
651 JNI_END
652
653
654 JNI_ENTRY_NO_PRESERVE(void, jni_ExceptionDescribe(JNIEnv *env))
655 JNIWrapper("ExceptionDescribe");
656
657 HOTSPOT_JNI_EXCEPTIONDESCRIBE_ENTRY(env);
658
659 if (thread->has_pending_exception()) {
660 Handle ex(thread, thread->pending_exception());
661 thread->clear_pending_exception();
662 if (ex->is_a(SystemDictionary::ThreadDeath_klass())) {
663 // Don't print anything if we are being killed.
664 } else {
665 jio_fprintf(defaultStream::error_stream(), "Exception ");
666 if (thread != NULL && thread->threadObj() != NULL) {
667 ResourceMark rm(THREAD);
668 jio_fprintf(defaultStream::error_stream(),
669 "in thread \"%s\" ", thread->get_thread_name());
670 }
671 if (ex->is_a(SystemDictionary::Throwable_klass())) {
672 JavaValue result(T_VOID);
673 JavaCalls::call_virtual(&result,
674 ex,
675 SystemDictionary::Throwable_klass(),
676 vmSymbols::printStackTrace_name(),
677 vmSymbols::void_method_signature(),
678 THREAD);
679 // If an exception is thrown in the call it gets thrown away. Not much
680 // we can do with it. The native code that calls this, does not check
681 // for the exception - hence, it might still be in the thread when DestroyVM gets
682 // called, potentially causing a few asserts to trigger - since no pending exception
683 // is expected.
684 CLEAR_PENDING_EXCEPTION;
685 } else {
686 ResourceMark rm(THREAD);
687 jio_fprintf(defaultStream::error_stream(),
688 ". Uncaught exception of type %s.",
689 ex->klass()->external_name());
690 }
691 }
692 }
693
694 HOTSPOT_JNI_EXCEPTIONDESCRIBE_RETURN();
695 JNI_END
696
697
698 JNI_ENTRY_NO_PRESERVE(void, jni_ExceptionClear(JNIEnv *env))
699 JNIWrapper("ExceptionClear");
700
701 HOTSPOT_JNI_EXCEPTIONCLEAR_ENTRY(env);
702
703 // The jni code might be using this API to clear java thrown exception.
704 // So just mark jvmti thread exception state as exception caught.
705 JvmtiThreadState *state = JavaThread::current()->jvmti_thread_state();
706 if (state != NULL && state->is_exception_detected()) {
707 state->set_exception_caught();
708 }
709 thread->clear_pending_exception();
710
711 HOTSPOT_JNI_EXCEPTIONCLEAR_RETURN();
712 JNI_END
713
714
715 JNI_ENTRY(void, jni_FatalError(JNIEnv *env, const char *msg))
716 JNIWrapper("FatalError");
717
718 HOTSPOT_JNI_FATALERROR_ENTRY(env, (char *) msg);
719
720 tty->print_cr("FATAL ERROR in native method: %s", msg);
721 thread->print_stack();
722 os::abort(); // Dump core and abort
723 JNI_END
724
725
726 JNI_ENTRY(jint, jni_PushLocalFrame(JNIEnv *env, jint capacity))
727 JNIWrapper("PushLocalFrame");
728
729 HOTSPOT_JNI_PUSHLOCALFRAME_ENTRY(env, capacity);
730
731 //%note jni_11
732 if (capacity < 0 ||
733 ((MaxJNILocalCapacity > 0) && (capacity > MaxJNILocalCapacity))) {
734 HOTSPOT_JNI_PUSHLOCALFRAME_RETURN((uint32_t)JNI_ERR);
735 return JNI_ERR;
736 }
737 JNIHandleBlock* old_handles = thread->active_handles();
738 JNIHandleBlock* new_handles = JNIHandleBlock::allocate_block(thread);
739 assert(new_handles != NULL, "should not be NULL");
740 new_handles->set_pop_frame_link(old_handles);
741 thread->set_active_handles(new_handles);
742 jint ret = JNI_OK;
743 HOTSPOT_JNI_PUSHLOCALFRAME_RETURN(ret);
744 return ret;
745 JNI_END
746
747
748 JNI_ENTRY(jobject, jni_PopLocalFrame(JNIEnv *env, jobject result))
749 JNIWrapper("PopLocalFrame");
750
751 HOTSPOT_JNI_POPLOCALFRAME_ENTRY(env, result);
752
753 //%note jni_11
754 Handle result_handle(thread, JNIHandles::resolve(result));
755 JNIHandleBlock* old_handles = thread->active_handles();
756 JNIHandleBlock* new_handles = old_handles->pop_frame_link();
757 if (new_handles != NULL) {
758 // As a sanity check we only release the handle blocks if the pop_frame_link is not NULL.
759 // This way code will still work if PopLocalFrame is called without a corresponding
760 // PushLocalFrame call. Note that we set the pop_frame_link to NULL explicitly, otherwise
761 // the release_block call will release the blocks.
762 thread->set_active_handles(new_handles);
763 old_handles->set_pop_frame_link(NULL); // clear link we won't release new_handles below
764 JNIHandleBlock::release_block(old_handles, thread); // may block
765 result = JNIHandles::make_local(thread, result_handle());
766 }
767 HOTSPOT_JNI_POPLOCALFRAME_RETURN(result);
768 return result;
769 JNI_END
770
771
772 JNI_ENTRY(jobject, jni_NewGlobalRef(JNIEnv *env, jobject ref))
773 JNIWrapper("NewGlobalRef");
774
775 HOTSPOT_JNI_NEWGLOBALREF_ENTRY(env, ref);
776
777 Handle ref_handle(thread, JNIHandles::resolve(ref));
778 jobject ret = JNIHandles::make_global(ref_handle);
779
780 HOTSPOT_JNI_NEWGLOBALREF_RETURN(ret);
781 return ret;
782 JNI_END
783
784 // Must be JNI_ENTRY (with HandleMark)
785 JNI_ENTRY_NO_PRESERVE(void, jni_DeleteGlobalRef(JNIEnv *env, jobject ref))
786 JNIWrapper("DeleteGlobalRef");
787
788 HOTSPOT_JNI_DELETEGLOBALREF_ENTRY(env, ref);
789
790 JNIHandles::destroy_global(ref);
791
792 HOTSPOT_JNI_DELETEGLOBALREF_RETURN();
793 JNI_END
794
795 JNI_ENTRY_NO_PRESERVE(void, jni_DeleteLocalRef(JNIEnv *env, jobject obj))
796 JNIWrapper("DeleteLocalRef");
797
798 HOTSPOT_JNI_DELETELOCALREF_ENTRY(env, obj);
799
800 JNIHandles::destroy_local(obj);
801
802 HOTSPOT_JNI_DELETELOCALREF_RETURN();
803 JNI_END
804
805 JNI_ENTRY_NO_PRESERVE(jboolean, jni_IsSameObject(JNIEnv *env, jobject r1, jobject r2))
806 JNIWrapper("IsSameObject");
807
808 HOTSPOT_JNI_ISSAMEOBJECT_ENTRY(env, r1, r2);
809
810 jboolean ret = JNIHandles::is_same_object(r1, r2) ? JNI_TRUE : JNI_FALSE;
811
812 HOTSPOT_JNI_ISSAMEOBJECT_RETURN(ret);
813 return ret;
814 JNI_END
815
816
817 JNI_ENTRY(jobject, jni_NewLocalRef(JNIEnv *env, jobject ref))
818 JNIWrapper("NewLocalRef");
819
820 HOTSPOT_JNI_NEWLOCALREF_ENTRY(env, ref);
821
822 jobject ret = JNIHandles::make_local(env, JNIHandles::resolve(ref));
823
824 HOTSPOT_JNI_NEWLOCALREF_RETURN(ret);
825 return ret;
826 JNI_END
827
828 JNI_LEAF(jint, jni_EnsureLocalCapacity(JNIEnv *env, jint capacity))
829 JNIWrapper("EnsureLocalCapacity");
830
831 HOTSPOT_JNI_ENSURELOCALCAPACITY_ENTRY(env, capacity);
832
833 jint ret;
834 if (capacity >= 0 &&
835 ((MaxJNILocalCapacity <= 0) || (capacity <= MaxJNILocalCapacity))) {
836 ret = JNI_OK;
837 } else {
838 ret = JNI_ERR;
839 }
840
841 HOTSPOT_JNI_ENSURELOCALCAPACITY_RETURN(ret);
842 return ret;
843 JNI_END
844
845 // Return the Handle Type
846 JNI_LEAF(jobjectRefType, jni_GetObjectRefType(JNIEnv *env, jobject obj))
847 JNIWrapper("GetObjectRefType");
848
849 HOTSPOT_JNI_GETOBJECTREFTYPE_ENTRY(env, obj);
850
851 jobjectRefType ret = JNIInvalidRefType;
852 if (obj != NULL) {
853 ret = JNIHandles::handle_type(thread, obj);
854 }
855
856 HOTSPOT_JNI_GETOBJECTREFTYPE_RETURN((void *) ret);
857 return ret;
858 JNI_END
859
860
861 class JNI_ArgumentPusher : public SignatureIterator {
862 protected:
863 JavaCallArguments* _arguments;
864
865 virtual void get_bool () = 0;
866 virtual void get_char () = 0;
867 virtual void get_short () = 0;
868 virtual void get_byte () = 0;
869 virtual void get_int () = 0;
870 virtual void get_long () = 0;
871 virtual void get_float () = 0;
872 virtual void get_double () = 0;
873 virtual void get_object () = 0;
874
875 JNI_ArgumentPusher(Symbol* signature) : SignatureIterator(signature) {
876 this->_return_type = T_ILLEGAL;
877 _arguments = NULL;
878 }
879
880 public:
881 virtual void iterate( uint64_t fingerprint ) = 0;
882
883 void set_java_argument_object(JavaCallArguments *arguments) { _arguments = arguments; }
884
885 inline void do_bool() { if (!is_return_type()) get_bool(); }
886 inline void do_char() { if (!is_return_type()) get_char(); }
887 inline void do_short() { if (!is_return_type()) get_short(); }
888 inline void do_byte() { if (!is_return_type()) get_byte(); }
889 inline void do_int() { if (!is_return_type()) get_int(); }
890 inline void do_long() { if (!is_return_type()) get_long(); }
891 inline void do_float() { if (!is_return_type()) get_float(); }
892 inline void do_double() { if (!is_return_type()) get_double(); }
893 inline void do_object(int begin, int end) { if (!is_return_type()) get_object(); }
894 inline void do_array(int begin, int end) { if (!is_return_type()) get_object(); } // do_array uses get_object -- there is no get_array
895 inline void do_void() { }
896
897 JavaCallArguments* arguments() { return _arguments; }
898 void push_receiver(Handle h) { _arguments->push_oop(h); }
899 };
900
901
902 class JNI_ArgumentPusherVaArg : public JNI_ArgumentPusher {
903 protected:
904 va_list _ap;
905
906 inline void get_bool() {
907 // Normalize boolean arguments from native code by converting 1-255 to JNI_TRUE and
908 // 0 to JNI_FALSE. Boolean return values from native are normalized the same in
909 // TemplateInterpreterGenerator::generate_result_handler_for and
910 // SharedRuntime::generate_native_wrapper.
911 jboolean b = va_arg(_ap, jint);
912 _arguments->push_int((jint)(b == 0 ? JNI_FALSE : JNI_TRUE));
913 }
914 inline void get_char() { _arguments->push_int(va_arg(_ap, jint)); } // char is coerced to int when using va_arg
915 inline void get_short() { _arguments->push_int(va_arg(_ap, jint)); } // short is coerced to int when using va_arg
916 inline void get_byte() { _arguments->push_int(va_arg(_ap, jint)); } // byte is coerced to int when using va_arg
917 inline void get_int() { _arguments->push_int(va_arg(_ap, jint)); }
918
919 // each of these paths is exercized by the various jck Call[Static,Nonvirtual,][Void,Int,..]Method[A,V,] tests
920
921 inline void get_long() { _arguments->push_long(va_arg(_ap, jlong)); }
922 inline void get_float() { _arguments->push_float((jfloat)va_arg(_ap, jdouble)); } // float is coerced to double w/ va_arg
923 inline void get_double() { _arguments->push_double(va_arg(_ap, jdouble)); }
924 inline void get_object() { _arguments->push_jobject(va_arg(_ap, jobject)); }
925
926 inline void set_ap(va_list rap) {
927 va_copy(_ap, rap);
928 }
929
930 public:
931 JNI_ArgumentPusherVaArg(Symbol* signature, va_list rap)
932 : JNI_ArgumentPusher(signature) {
933 set_ap(rap);
934 }
935 JNI_ArgumentPusherVaArg(jmethodID method_id, va_list rap)
936 : JNI_ArgumentPusher(Method::resolve_jmethod_id(method_id)->signature()) {
937 set_ap(rap);
938 }
939
940 // Optimized path if we have the bitvector form of signature
941 void iterate( uint64_t fingerprint ) {
942 if (fingerprint == (uint64_t)CONST64(-1)) {
943 SignatureIterator::iterate(); // Must be too many arguments
944 } else {
945 _return_type = (BasicType)((fingerprint >> static_feature_size) &
946 result_feature_mask);
947
948 assert(fingerprint, "Fingerprint should not be 0");
949 fingerprint = fingerprint >> (static_feature_size + result_feature_size);
950 while ( 1 ) {
951 switch ( fingerprint & parameter_feature_mask ) {
952 case bool_parm:
953 get_bool();
954 break;
955 case char_parm:
956 get_char();
957 break;
958 case short_parm:
959 get_short();
960 break;
961 case byte_parm:
962 get_byte();
963 break;
964 case int_parm:
965 get_int();
966 break;
967 case obj_parm:
968 get_object();
969 break;
970 case long_parm:
971 get_long();
972 break;
973 case float_parm:
974 get_float();
975 break;
976 case double_parm:
977 get_double();
978 break;
979 case done_parm:
980 return;
981 break;
982 default:
983 ShouldNotReachHere();
984 break;
985 }
986 fingerprint >>= parameter_feature_size;
987 }
988 }
989 }
990 };
991
992
993 class JNI_ArgumentPusherArray : public JNI_ArgumentPusher {
994 protected:
995 const jvalue *_ap;
996
997 inline void get_bool() {
998 // Normalize boolean arguments from native code by converting 1-255 to JNI_TRUE and
999 // 0 to JNI_FALSE. Boolean return values from native are normalized the same in
1000 // TemplateInterpreterGenerator::generate_result_handler_for and
1001 // SharedRuntime::generate_native_wrapper.
1002 jboolean b = (_ap++)->z;
1003 _arguments->push_int((jint)(b == 0 ? JNI_FALSE : JNI_TRUE));
1004 }
1005 inline void get_char() { _arguments->push_int((jint)(_ap++)->c); }
1006 inline void get_short() { _arguments->push_int((jint)(_ap++)->s); }
1007 inline void get_byte() { _arguments->push_int((jint)(_ap++)->b); }
1008 inline void get_int() { _arguments->push_int((jint)(_ap++)->i); }
1009
1010 inline void get_long() { _arguments->push_long((_ap++)->j); }
1011 inline void get_float() { _arguments->push_float((_ap++)->f); }
1012 inline void get_double() { _arguments->push_double((_ap++)->d);}
1013 inline void get_object() { _arguments->push_jobject((_ap++)->l); }
1014
1015 inline void set_ap(const jvalue *rap) { _ap = rap; }
1016
1017 public:
1018 JNI_ArgumentPusherArray(Symbol* signature, const jvalue *rap)
1019 : JNI_ArgumentPusher(signature) {
1020 set_ap(rap);
1021 }
1022 JNI_ArgumentPusherArray(jmethodID method_id, const jvalue *rap)
1023 : JNI_ArgumentPusher(Method::resolve_jmethod_id(method_id)->signature()) {
1024 set_ap(rap);
1025 }
1026
1027 // Optimized path if we have the bitvector form of signature
1028 void iterate( uint64_t fingerprint ) {
1029 if (fingerprint == (uint64_t)CONST64(-1)) {
1030 SignatureIterator::iterate(); // Must be too many arguments
1031 } else {
1032 _return_type = (BasicType)((fingerprint >> static_feature_size) &
1033 result_feature_mask);
1034 assert(fingerprint, "Fingerprint should not be 0");
1035 fingerprint = fingerprint >> (static_feature_size + result_feature_size);
1036 while ( 1 ) {
1037 switch ( fingerprint & parameter_feature_mask ) {
1038 case bool_parm:
1039 get_bool();
1040 break;
1041 case char_parm:
1042 get_char();
1043 break;
1044 case short_parm:
1045 get_short();
1046 break;
1047 case byte_parm:
1048 get_byte();
1049 break;
1050 case int_parm:
1051 get_int();
1052 break;
1053 case obj_parm:
1054 get_object();
1055 break;
1056 case long_parm:
1057 get_long();
1058 break;
1059 case float_parm:
1060 get_float();
1061 break;
1062 case double_parm:
1063 get_double();
1064 break;
1065 case done_parm:
1066 return;
1067 break;
1068 default:
1069 ShouldNotReachHere();
1070 break;
1071 }
1072 fingerprint >>= parameter_feature_size;
1073 }
1074 }
1075 }
1076 };
1077
1078
1079 enum JNICallType {
1080 JNI_STATIC,
1081 JNI_VIRTUAL,
1082 JNI_NONVIRTUAL
1083 };
1084
1085
1086
1087 static void jni_invoke_static(JNIEnv *env, JavaValue* result, jobject receiver, JNICallType call_type, jmethodID method_id, JNI_ArgumentPusher *args, TRAPS) {
1088 methodHandle method(THREAD, Method::resolve_jmethod_id(method_id));
1089
1090 // Create object to hold arguments for the JavaCall, and associate it with
1091 // the jni parser
1092 ResourceMark rm(THREAD);
1093 int number_of_parameters = method->size_of_parameters();
1094 JavaCallArguments java_args(number_of_parameters);
1095 args->set_java_argument_object(&java_args);
1096
1097 assert(method->is_static(), "method should be static");
1098
1099 // Fill out JavaCallArguments object
1100 args->iterate( Fingerprinter(method).fingerprint() );
1101 // Initialize result type
1102 result->set_type(args->get_ret_type());
1103
1104 // Invoke the method. Result is returned as oop.
1105 JavaCalls::call(result, method, &java_args, CHECK);
1106
1107 // Convert result
1108 if (is_reference_type(result->get_type())) {
1109 result->set_jobject(JNIHandles::make_local(env, (oop) result->get_jobject()));
1110 }
1111 }
1112
1113
1114 static void jni_invoke_nonstatic(JNIEnv *env, JavaValue* result, jobject receiver, JNICallType call_type, jmethodID method_id, JNI_ArgumentPusher *args, TRAPS) {
1115 oop recv = JNIHandles::resolve(receiver);
1116 if (recv == NULL) {
1117 THROW(vmSymbols::java_lang_NullPointerException());
1118 }
1119 Handle h_recv(THREAD, recv);
1120
1121 int number_of_parameters;
1122 Method* selected_method;
1123 {
1124 Method* m = Method::resolve_jmethod_id(method_id);
1125 number_of_parameters = m->size_of_parameters();
1126 Klass* holder = m->method_holder();
1127 if (call_type != JNI_VIRTUAL) {
1128 selected_method = m;
1129 } else if (!m->has_itable_index()) {
1130 // non-interface call -- for that little speed boost, don't handlize
1131 debug_only(NoSafepointVerifier nosafepoint;)
1132 // jni_GetMethodID makes sure class is linked and initialized
1133 // so m should have a valid vtable index.
1134 assert(m->valid_vtable_index(), "no valid vtable index");
1135 int vtbl_index = m->vtable_index();
1136 if (vtbl_index != Method::nonvirtual_vtable_index) {
1137 selected_method = h_recv->klass()->method_at_vtable(vtbl_index);
1138 } else {
1139 // final method
1140 selected_method = m;
1141 }
1142 } else {
1143 // interface call
1144 int itbl_index = m->itable_index();
1145 Klass* k = h_recv->klass();
1146 selected_method = InstanceKlass::cast(k)->method_at_itable(holder, itbl_index, CHECK);
1147 }
1148 }
1149
1150 methodHandle method(THREAD, selected_method);
1151
1152 // Create object to hold arguments for the JavaCall, and associate it with
1153 // the jni parser
1154 ResourceMark rm(THREAD);
1155 JavaCallArguments java_args(number_of_parameters);
1156 args->set_java_argument_object(&java_args);
1157
1158 // handle arguments
1159 assert(!method->is_static(), "method %s should not be static", method->name_and_sig_as_C_string());
1160 args->push_receiver(h_recv); // Push jobject handle
1161
1162 // Fill out JavaCallArguments object
1163 args->iterate( Fingerprinter(method).fingerprint() );
1164 // Initialize result type
1165 result->set_type(args->get_ret_type());
1166
1167 // Invoke the method. Result is returned as oop.
1168 JavaCalls::call(result, method, &java_args, CHECK);
1169
1170 // Convert result
1171 if (is_reference_type(result->get_type())) {
1172 result->set_jobject(JNIHandles::make_local(env, (oop) result->get_jobject()));
1173 }
1174 }
1175
1176
1177 static instanceOop alloc_object(jclass clazz, TRAPS) {
1178 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz));
1179 if (k == NULL) {
1180 ResourceMark rm(THREAD);
1181 THROW_(vmSymbols::java_lang_InstantiationException(), NULL);
1182 }
1183 k->check_valid_for_instantiation(false, CHECK_NULL);
1184 k->initialize(CHECK_NULL);
1185 instanceOop ih = InstanceKlass::cast(k)->allocate_instance(THREAD);
1186 return ih;
1187 }
1188
1189 DT_RETURN_MARK_DECL(AllocObject, jobject
1190 , HOTSPOT_JNI_ALLOCOBJECT_RETURN(_ret_ref));
1191
1192 JNI_ENTRY(jobject, jni_AllocObject(JNIEnv *env, jclass clazz))
1193 JNIWrapper("AllocObject");
1194
1195 HOTSPOT_JNI_ALLOCOBJECT_ENTRY(env, clazz);
1196
1197 jobject ret = NULL;
1198 DT_RETURN_MARK(AllocObject, jobject, (const jobject&)ret);
1199
1200 instanceOop i = alloc_object(clazz, CHECK_NULL);
1201 ret = JNIHandles::make_local(env, i);
1202 return ret;
1203 JNI_END
1204
1205 DT_RETURN_MARK_DECL(NewObjectA, jobject
1206 , HOTSPOT_JNI_NEWOBJECTA_RETURN(_ret_ref));
1207
1208 JNI_ENTRY(jobject, jni_NewObjectA(JNIEnv *env, jclass clazz, jmethodID methodID, const jvalue *args))
1209 JNIWrapper("NewObjectA");
1210
1211 HOTSPOT_JNI_NEWOBJECTA_ENTRY(env, clazz, (uintptr_t) methodID);
1212
1213 jobject obj = NULL;
1214 DT_RETURN_MARK(NewObjectA, jobject, (const jobject)obj);
1215
1216 instanceOop i = alloc_object(clazz, CHECK_NULL);
1217 obj = JNIHandles::make_local(env, i);
1218 JavaValue jvalue(T_VOID);
1219 JNI_ArgumentPusherArray ap(methodID, args);
1220 jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK_NULL);
1221 return obj;
1222 JNI_END
1223
1224
1225 DT_RETURN_MARK_DECL(NewObjectV, jobject
1226 , HOTSPOT_JNI_NEWOBJECTV_RETURN(_ret_ref));
1227
1228 JNI_ENTRY(jobject, jni_NewObjectV(JNIEnv *env, jclass clazz, jmethodID methodID, va_list args))
1229 JNIWrapper("NewObjectV");
1230
1231 HOTSPOT_JNI_NEWOBJECTV_ENTRY(env, clazz, (uintptr_t) methodID);
1232
1233 jobject obj = NULL;
1234 DT_RETURN_MARK(NewObjectV, jobject, (const jobject&)obj);
1235
1236 instanceOop i = alloc_object(clazz, CHECK_NULL);
1237 obj = JNIHandles::make_local(env, i);
1238 JavaValue jvalue(T_VOID);
1239 JNI_ArgumentPusherVaArg ap(methodID, args);
1240 jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK_NULL);
1241 return obj;
1242 JNI_END
1243
1244
1245 DT_RETURN_MARK_DECL(NewObject, jobject
1246 , HOTSPOT_JNI_NEWOBJECT_RETURN(_ret_ref));
1247
1248 JNI_ENTRY(jobject, jni_NewObject(JNIEnv *env, jclass clazz, jmethodID methodID, ...))
1249 JNIWrapper("NewObject");
1250
1251 HOTSPOT_JNI_NEWOBJECT_ENTRY(env, clazz, (uintptr_t) methodID);
1252
1253 jobject obj = NULL;
1254 DT_RETURN_MARK(NewObject, jobject, (const jobject&)obj);
1255
1256 instanceOop i = alloc_object(clazz, CHECK_NULL);
1257 obj = JNIHandles::make_local(env, i);
1258 va_list args;
1259 va_start(args, methodID);
1260 JavaValue jvalue(T_VOID);
1261 JNI_ArgumentPusherVaArg ap(methodID, args);
1262 jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK_NULL);
1263 va_end(args);
1264 return obj;
1265 JNI_END
1266
1267
1268 JNI_ENTRY(jclass, jni_GetObjectClass(JNIEnv *env, jobject obj))
1269 JNIWrapper("GetObjectClass");
1270
1271 HOTSPOT_JNI_GETOBJECTCLASS_ENTRY(env, obj);
1272
1273 Klass* k = JNIHandles::resolve_non_null(obj)->klass();
1274 jclass ret =
1275 (jclass) JNIHandles::make_local(env, k->java_mirror());
1276
1277 HOTSPOT_JNI_GETOBJECTCLASS_RETURN(ret);
1278 return ret;
1279 JNI_END
1280
1281 JNI_ENTRY_NO_PRESERVE(jboolean, jni_IsInstanceOf(JNIEnv *env, jobject obj, jclass clazz))
1282 JNIWrapper("IsInstanceOf");
1283
1284 HOTSPOT_JNI_ISINSTANCEOF_ENTRY(env, obj, clazz);
1285
1286 jboolean ret = JNI_TRUE;
1287 if (obj != NULL) {
1288 ret = JNI_FALSE;
1289 Klass* k = java_lang_Class::as_Klass(
1290 JNIHandles::resolve_non_null(clazz));
1291 if (k != NULL) {
1292 ret = JNIHandles::resolve_non_null(obj)->is_a(k) ? JNI_TRUE : JNI_FALSE;
1293 }
1294 }
1295
1296 HOTSPOT_JNI_ISINSTANCEOF_RETURN(ret);
1297 return ret;
1298 JNI_END
1299
1300
1301 static jmethodID get_method_id(JNIEnv *env, jclass clazz, const char *name_str,
1302 const char *sig, bool is_static, TRAPS) {
1303 // %%%% This code should probably just call into a method in the LinkResolver
1304 //
1305 // The class should have been loaded (we have an instance of the class
1306 // passed in) so the method and signature should already be in the symbol
1307 // table. If they're not there, the method doesn't exist.
1308 const char *name_to_probe = (name_str == NULL)
1309 ? vmSymbols::object_initializer_name()->as_C_string()
1310 : name_str;
1311 TempNewSymbol name = SymbolTable::probe(name_to_probe, (int)strlen(name_to_probe));
1312 TempNewSymbol signature = SymbolTable::probe(sig, (int)strlen(sig));
1313
1314 if (name == NULL || signature == NULL) {
1315 THROW_MSG_0(vmSymbols::java_lang_NoSuchMethodError(), name_str);
1316 }
1317
1318 Klass* klass = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz));
1319
1320 // Throw a NoSuchMethodError exception if we have an instance of a
1321 // primitive java.lang.Class
1322 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(clazz))) {
1323 ResourceMark rm;
1324 THROW_MSG_0(vmSymbols::java_lang_NoSuchMethodError(), err_msg("%s%s.%s%s", is_static ? "static " : "", klass->signature_name(), name_str, sig));
1325 }
1326
1327 // Make sure class is linked and initialized before handing id's out to
1328 // Method*s.
1329 klass->initialize(CHECK_NULL);
1330
1331 Method* m;
1332 if (name == vmSymbols::object_initializer_name() ||
1333 name == vmSymbols::class_initializer_name()) {
1334 // Never search superclasses for constructors
1335 if (klass->is_instance_klass()) {
1336 m = InstanceKlass::cast(klass)->find_method(name, signature);
1337 } else {
1338 m = NULL;
1339 }
1340 } else {
1341 m = klass->lookup_method(name, signature);
1342 if (m == NULL && klass->is_instance_klass()) {
1343 m = InstanceKlass::cast(klass)->lookup_method_in_ordered_interfaces(name, signature);
1344 }
1345 }
1346 if (m == NULL || (m->is_static() != is_static)) {
1347 ResourceMark rm;
1348 THROW_MSG_0(vmSymbols::java_lang_NoSuchMethodError(), err_msg("%s%s.%s%s", is_static ? "static " : "", klass->signature_name(), name_str, sig));
1349 }
1350 return m->jmethod_id();
1351 }
1352
1353
1354 JNI_ENTRY(jmethodID, jni_GetMethodID(JNIEnv *env, jclass clazz,
1355 const char *name, const char *sig))
1356 JNIWrapper("GetMethodID");
1357 HOTSPOT_JNI_GETMETHODID_ENTRY(env, clazz, (char *) name, (char *) sig);
1358 jmethodID ret = get_method_id(env, clazz, name, sig, false, thread);
1359 HOTSPOT_JNI_GETMETHODID_RETURN((uintptr_t) ret);
1360 return ret;
1361 JNI_END
1362
1363
1364 JNI_ENTRY(jmethodID, jni_GetStaticMethodID(JNIEnv *env, jclass clazz,
1365 const char *name, const char *sig))
1366 JNIWrapper("GetStaticMethodID");
1367 HOTSPOT_JNI_GETSTATICMETHODID_ENTRY(env, (char *) clazz, (char *) name, (char *)sig);
1368 jmethodID ret = get_method_id(env, clazz, name, sig, true, thread);
1369 HOTSPOT_JNI_GETSTATICMETHODID_RETURN((uintptr_t) ret);
1370 return ret;
1371 JNI_END
1372
1373
1374
1375 //
1376 // Calling Methods
1377 //
1378
1379
1380 #define DEFINE_CALLMETHOD(ResultType, Result, Tag \
1381 , EntryProbe, ReturnProbe) \
1382 \
1383 DT_RETURN_MARK_DECL_FOR(Result, Call##Result##Method, ResultType \
1384 , ReturnProbe); \
1385 \
1386 JNI_ENTRY(ResultType, \
1387 jni_Call##Result##Method(JNIEnv *env, jobject obj, jmethodID methodID, ...)) \
1388 JNIWrapper("Call" XSTR(Result) "Method"); \
1389 \
1390 EntryProbe; \
1391 ResultType ret = 0;\
1392 DT_RETURN_MARK_FOR(Result, Call##Result##Method, ResultType, \
1393 (const ResultType&)ret);\
1394 \
1395 va_list args; \
1396 va_start(args, methodID); \
1397 JavaValue jvalue(Tag); \
1398 JNI_ArgumentPusherVaArg ap(methodID, args); \
1399 jni_invoke_nonstatic(env, &jvalue, obj, JNI_VIRTUAL, methodID, &ap, CHECK_0); \
1400 va_end(args); \
1401 ret = jvalue.get_##ResultType(); \
1402 return ret;\
1403 JNI_END
1404
1405 // the runtime type of subword integral basic types is integer
1406 DEFINE_CALLMETHOD(jboolean, Boolean, T_BOOLEAN
1407 , HOTSPOT_JNI_CALLBOOLEANMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1408 HOTSPOT_JNI_CALLBOOLEANMETHOD_RETURN(_ret_ref))
1409 DEFINE_CALLMETHOD(jbyte, Byte, T_BYTE
1410 , HOTSPOT_JNI_CALLBYTEMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1411 HOTSPOT_JNI_CALLBYTEMETHOD_RETURN(_ret_ref))
1412 DEFINE_CALLMETHOD(jchar, Char, T_CHAR
1413 , HOTSPOT_JNI_CALLCHARMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1414 HOTSPOT_JNI_CALLCHARMETHOD_RETURN(_ret_ref))
1415 DEFINE_CALLMETHOD(jshort, Short, T_SHORT
1416 , HOTSPOT_JNI_CALLSHORTMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1417 HOTSPOT_JNI_CALLSHORTMETHOD_RETURN(_ret_ref))
1418
1419 DEFINE_CALLMETHOD(jobject, Object, T_OBJECT
1420 , HOTSPOT_JNI_CALLOBJECTMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1421 HOTSPOT_JNI_CALLOBJECTMETHOD_RETURN(_ret_ref))
1422 DEFINE_CALLMETHOD(jint, Int, T_INT,
1423 HOTSPOT_JNI_CALLINTMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1424 HOTSPOT_JNI_CALLINTMETHOD_RETURN(_ret_ref))
1425 DEFINE_CALLMETHOD(jlong, Long, T_LONG
1426 , HOTSPOT_JNI_CALLLONGMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1427 HOTSPOT_JNI_CALLLONGMETHOD_RETURN(_ret_ref))
1428 // Float and double probes don't return value because dtrace doesn't currently support it
1429 DEFINE_CALLMETHOD(jfloat, Float, T_FLOAT
1430 , HOTSPOT_JNI_CALLFLOATMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1431 HOTSPOT_JNI_CALLFLOATMETHOD_RETURN())
1432 DEFINE_CALLMETHOD(jdouble, Double, T_DOUBLE
1433 , HOTSPOT_JNI_CALLDOUBLEMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1434 HOTSPOT_JNI_CALLDOUBLEMETHOD_RETURN())
1435
1436 #define DEFINE_CALLMETHODV(ResultType, Result, Tag \
1437 , EntryProbe, ReturnProbe) \
1438 \
1439 DT_RETURN_MARK_DECL_FOR(Result, Call##Result##MethodV, ResultType \
1440 , ReturnProbe); \
1441 \
1442 JNI_ENTRY(ResultType, \
1443 jni_Call##Result##MethodV(JNIEnv *env, jobject obj, jmethodID methodID, va_list args)) \
1444 JNIWrapper("Call" XSTR(Result) "MethodV"); \
1445 \
1446 EntryProbe;\
1447 ResultType ret = 0;\
1448 DT_RETURN_MARK_FOR(Result, Call##Result##MethodV, ResultType, \
1449 (const ResultType&)ret);\
1450 \
1451 JavaValue jvalue(Tag); \
1452 JNI_ArgumentPusherVaArg ap(methodID, args); \
1453 jni_invoke_nonstatic(env, &jvalue, obj, JNI_VIRTUAL, methodID, &ap, CHECK_0); \
1454 ret = jvalue.get_##ResultType(); \
1455 return ret;\
1456 JNI_END
1457
1458 // the runtime type of subword integral basic types is integer
1459 DEFINE_CALLMETHODV(jboolean, Boolean, T_BOOLEAN
1460 , HOTSPOT_JNI_CALLBOOLEANMETHODV_ENTRY(env, obj, (uintptr_t)methodID),
1461 HOTSPOT_JNI_CALLBOOLEANMETHODV_RETURN(_ret_ref))
1462 DEFINE_CALLMETHODV(jbyte, Byte, T_BYTE
1463 , HOTSPOT_JNI_CALLBYTEMETHODV_ENTRY(env, obj, (uintptr_t)methodID),
1464 HOTSPOT_JNI_CALLBYTEMETHODV_RETURN(_ret_ref))
1465 DEFINE_CALLMETHODV(jchar, Char, T_CHAR
1466 , HOTSPOT_JNI_CALLCHARMETHODV_ENTRY(env, obj, (uintptr_t)methodID),
1467 HOTSPOT_JNI_CALLCHARMETHODV_RETURN(_ret_ref))
1468 DEFINE_CALLMETHODV(jshort, Short, T_SHORT
1469 , HOTSPOT_JNI_CALLSHORTMETHODV_ENTRY(env, obj, (uintptr_t)methodID),
1470 HOTSPOT_JNI_CALLSHORTMETHODV_RETURN(_ret_ref))
1471
1472 DEFINE_CALLMETHODV(jobject, Object, T_OBJECT
1473 , HOTSPOT_JNI_CALLOBJECTMETHODV_ENTRY(env, obj, (uintptr_t)methodID),
1474 HOTSPOT_JNI_CALLOBJECTMETHODV_RETURN(_ret_ref))
1475 DEFINE_CALLMETHODV(jint, Int, T_INT,
1476 HOTSPOT_JNI_CALLINTMETHODV_ENTRY(env, obj, (uintptr_t)methodID),
1477 HOTSPOT_JNI_CALLINTMETHODV_RETURN(_ret_ref))
1478 DEFINE_CALLMETHODV(jlong, Long, T_LONG
1479 , HOTSPOT_JNI_CALLLONGMETHODV_ENTRY(env, obj, (uintptr_t)methodID),
1480 HOTSPOT_JNI_CALLLONGMETHODV_RETURN(_ret_ref))
1481 // Float and double probes don't return value because dtrace doesn't currently support it
1482 DEFINE_CALLMETHODV(jfloat, Float, T_FLOAT
1483 , HOTSPOT_JNI_CALLFLOATMETHODV_ENTRY(env, obj, (uintptr_t)methodID),
1484 HOTSPOT_JNI_CALLFLOATMETHODV_RETURN())
1485 DEFINE_CALLMETHODV(jdouble, Double, T_DOUBLE
1486 , HOTSPOT_JNI_CALLDOUBLEMETHODV_ENTRY(env, obj, (uintptr_t)methodID),
1487 HOTSPOT_JNI_CALLDOUBLEMETHODV_RETURN())
1488
1489 #define DEFINE_CALLMETHODA(ResultType, Result, Tag \
1490 , EntryProbe, ReturnProbe) \
1491 \
1492 DT_RETURN_MARK_DECL_FOR(Result, Call##Result##MethodA, ResultType \
1493 , ReturnProbe); \
1494 \
1495 JNI_ENTRY(ResultType, \
1496 jni_Call##Result##MethodA(JNIEnv *env, jobject obj, jmethodID methodID, const jvalue *args)) \
1497 JNIWrapper("Call" XSTR(Result) "MethodA"); \
1498 EntryProbe; \
1499 ResultType ret = 0;\
1500 DT_RETURN_MARK_FOR(Result, Call##Result##MethodA, ResultType, \
1501 (const ResultType&)ret);\
1502 \
1503 JavaValue jvalue(Tag); \
1504 JNI_ArgumentPusherArray ap(methodID, args); \
1505 jni_invoke_nonstatic(env, &jvalue, obj, JNI_VIRTUAL, methodID, &ap, CHECK_0); \
1506 ret = jvalue.get_##ResultType(); \
1507 return ret;\
1508 JNI_END
1509
1510 // the runtime type of subword integral basic types is integer
1511 DEFINE_CALLMETHODA(jboolean, Boolean, T_BOOLEAN
1512 , HOTSPOT_JNI_CALLBOOLEANMETHODA_ENTRY(env, obj, (uintptr_t)methodID),
1513 HOTSPOT_JNI_CALLBOOLEANMETHODA_RETURN(_ret_ref))
1514 DEFINE_CALLMETHODA(jbyte, Byte, T_BYTE
1515 , HOTSPOT_JNI_CALLBYTEMETHODA_ENTRY(env, obj, (uintptr_t)methodID),
1516 HOTSPOT_JNI_CALLBYTEMETHODA_RETURN(_ret_ref))
1517 DEFINE_CALLMETHODA(jchar, Char, T_CHAR
1518 , HOTSPOT_JNI_CALLCHARMETHODA_ENTRY(env, obj, (uintptr_t)methodID),
1519 HOTSPOT_JNI_CALLCHARMETHODA_RETURN(_ret_ref))
1520 DEFINE_CALLMETHODA(jshort, Short, T_SHORT
1521 , HOTSPOT_JNI_CALLSHORTMETHODA_ENTRY(env, obj, (uintptr_t)methodID),
1522 HOTSPOT_JNI_CALLSHORTMETHODA_RETURN(_ret_ref))
1523
1524 DEFINE_CALLMETHODA(jobject, Object, T_OBJECT
1525 , HOTSPOT_JNI_CALLOBJECTMETHODA_ENTRY(env, obj, (uintptr_t)methodID),
1526 HOTSPOT_JNI_CALLOBJECTMETHODA_RETURN(_ret_ref))
1527 DEFINE_CALLMETHODA(jint, Int, T_INT,
1528 HOTSPOT_JNI_CALLINTMETHODA_ENTRY(env, obj, (uintptr_t)methodID),
1529 HOTSPOT_JNI_CALLINTMETHODA_RETURN(_ret_ref))
1530 DEFINE_CALLMETHODA(jlong, Long, T_LONG
1531 , HOTSPOT_JNI_CALLLONGMETHODA_ENTRY(env, obj, (uintptr_t)methodID),
1532 HOTSPOT_JNI_CALLLONGMETHODA_RETURN(_ret_ref))
1533 // Float and double probes don't return value because dtrace doesn't currently support it
1534 DEFINE_CALLMETHODA(jfloat, Float, T_FLOAT
1535 , HOTSPOT_JNI_CALLFLOATMETHODA_ENTRY(env, obj, (uintptr_t)methodID),
1536 HOTSPOT_JNI_CALLFLOATMETHODA_RETURN())
1537 DEFINE_CALLMETHODA(jdouble, Double, T_DOUBLE
1538 , HOTSPOT_JNI_CALLDOUBLEMETHODA_ENTRY(env, obj, (uintptr_t)methodID),
1539 HOTSPOT_JNI_CALLDOUBLEMETHODA_RETURN())
1540
1541 DT_VOID_RETURN_MARK_DECL(CallVoidMethod, HOTSPOT_JNI_CALLVOIDMETHOD_RETURN());
1542 DT_VOID_RETURN_MARK_DECL(CallVoidMethodV, HOTSPOT_JNI_CALLVOIDMETHODV_RETURN());
1543 DT_VOID_RETURN_MARK_DECL(CallVoidMethodA, HOTSPOT_JNI_CALLVOIDMETHODA_RETURN());
1544
1545
1546 JNI_ENTRY(void, jni_CallVoidMethod(JNIEnv *env, jobject obj, jmethodID methodID, ...))
1547 JNIWrapper("CallVoidMethod");
1548 HOTSPOT_JNI_CALLVOIDMETHOD_ENTRY(env, obj, (uintptr_t) methodID);
1549 DT_VOID_RETURN_MARK(CallVoidMethod);
1550
1551 va_list args;
1552 va_start(args, methodID);
1553 JavaValue jvalue(T_VOID);
1554 JNI_ArgumentPusherVaArg ap(methodID, args);
1555 jni_invoke_nonstatic(env, &jvalue, obj, JNI_VIRTUAL, methodID, &ap, CHECK);
1556 va_end(args);
1557 JNI_END
1558
1559
1560 JNI_ENTRY(void, jni_CallVoidMethodV(JNIEnv *env, jobject obj, jmethodID methodID, va_list args))
1561 JNIWrapper("CallVoidMethodV");
1562 HOTSPOT_JNI_CALLVOIDMETHODV_ENTRY(env, obj, (uintptr_t) methodID);
1563 DT_VOID_RETURN_MARK(CallVoidMethodV);
1564
1565 JavaValue jvalue(T_VOID);
1566 JNI_ArgumentPusherVaArg ap(methodID, args);
1567 jni_invoke_nonstatic(env, &jvalue, obj, JNI_VIRTUAL, methodID, &ap, CHECK);
1568 JNI_END
1569
1570
1571 JNI_ENTRY(void, jni_CallVoidMethodA(JNIEnv *env, jobject obj, jmethodID methodID, const jvalue *args))
1572 JNIWrapper("CallVoidMethodA");
1573 HOTSPOT_JNI_CALLVOIDMETHODA_ENTRY(env, obj, (uintptr_t) methodID);
1574 DT_VOID_RETURN_MARK(CallVoidMethodA);
1575
1576 JavaValue jvalue(T_VOID);
1577 JNI_ArgumentPusherArray ap(methodID, args);
1578 jni_invoke_nonstatic(env, &jvalue, obj, JNI_VIRTUAL, methodID, &ap, CHECK);
1579 JNI_END
1580
1581
1582
1583 #define DEFINE_CALLNONVIRTUALMETHOD(ResultType, Result, Tag \
1584 , EntryProbe, ReturnProbe) \
1585 \
1586 DT_RETURN_MARK_DECL_FOR(Result, CallNonvirtual##Result##Method, ResultType \
1587 , ReturnProbe);\
1588 \
1589 JNI_ENTRY(ResultType, \
1590 jni_CallNonvirtual##Result##Method(JNIEnv *env, jobject obj, jclass cls, jmethodID methodID, ...)) \
1591 JNIWrapper("CallNonvitual" XSTR(Result) "Method"); \
1592 \
1593 EntryProbe;\
1594 ResultType ret;\
1595 DT_RETURN_MARK_FOR(Result, CallNonvirtual##Result##Method, ResultType, \
1596 (const ResultType&)ret);\
1597 \
1598 va_list args; \
1599 va_start(args, methodID); \
1600 JavaValue jvalue(Tag); \
1601 JNI_ArgumentPusherVaArg ap(methodID, args); \
1602 jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK_0); \
1603 va_end(args); \
1604 ret = jvalue.get_##ResultType(); \
1605 return ret;\
1606 JNI_END
1607
1608 // the runtime type of subword integral basic types is integer
1609 DEFINE_CALLNONVIRTUALMETHOD(jboolean, Boolean, T_BOOLEAN
1610 , HOTSPOT_JNI_CALLNONVIRTUALBOOLEANMETHOD_ENTRY(env, obj, cls, (uintptr_t)methodID),
1611 HOTSPOT_JNI_CALLNONVIRTUALBOOLEANMETHOD_RETURN(_ret_ref))
1612 DEFINE_CALLNONVIRTUALMETHOD(jbyte, Byte, T_BYTE
1613 , HOTSPOT_JNI_CALLNONVIRTUALBYTEMETHOD_ENTRY(env, obj, cls, (uintptr_t)methodID),
1614 HOTSPOT_JNI_CALLNONVIRTUALBYTEMETHOD_RETURN(_ret_ref))
1615 DEFINE_CALLNONVIRTUALMETHOD(jchar, Char, T_CHAR
1616 , HOTSPOT_JNI_CALLNONVIRTUALCHARMETHOD_ENTRY(env, obj, cls, (uintptr_t)methodID),
1617 HOTSPOT_JNI_CALLNONVIRTUALCHARMETHOD_RETURN(_ret_ref))
1618 DEFINE_CALLNONVIRTUALMETHOD(jshort, Short, T_SHORT
1619 , HOTSPOT_JNI_CALLNONVIRTUALSHORTMETHOD_ENTRY(env, obj, cls, (uintptr_t)methodID),
1620 HOTSPOT_JNI_CALLNONVIRTUALSHORTMETHOD_RETURN(_ret_ref))
1621
1622 DEFINE_CALLNONVIRTUALMETHOD(jobject, Object, T_OBJECT
1623 , HOTSPOT_JNI_CALLNONVIRTUALOBJECTMETHOD_ENTRY(env, obj, cls, (uintptr_t)methodID),
1624 HOTSPOT_JNI_CALLNONVIRTUALOBJECTMETHOD_RETURN(_ret_ref))
1625 DEFINE_CALLNONVIRTUALMETHOD(jint, Int, T_INT
1626 , HOTSPOT_JNI_CALLNONVIRTUALINTMETHOD_ENTRY(env, obj, cls, (uintptr_t)methodID),
1627 HOTSPOT_JNI_CALLNONVIRTUALINTMETHOD_RETURN(_ret_ref))
1628 DEFINE_CALLNONVIRTUALMETHOD(jlong, Long, T_LONG
1629 , HOTSPOT_JNI_CALLNONVIRTUALLONGMETHOD_ENTRY(env, obj, cls, (uintptr_t)methodID),
1630 // Float and double probes don't return value because dtrace doesn't currently support it
1631 HOTSPOT_JNI_CALLNONVIRTUALLONGMETHOD_RETURN(_ret_ref))
1632 DEFINE_CALLNONVIRTUALMETHOD(jfloat, Float, T_FLOAT
1633 , HOTSPOT_JNI_CALLNONVIRTUALFLOATMETHOD_ENTRY(env, obj, cls, (uintptr_t)methodID),
1634 HOTSPOT_JNI_CALLNONVIRTUALFLOATMETHOD_RETURN())
1635 DEFINE_CALLNONVIRTUALMETHOD(jdouble, Double, T_DOUBLE
1636 , HOTSPOT_JNI_CALLNONVIRTUALDOUBLEMETHOD_ENTRY(env, obj, cls, (uintptr_t)methodID),
1637 HOTSPOT_JNI_CALLNONVIRTUALDOUBLEMETHOD_RETURN())
1638
1639 #define DEFINE_CALLNONVIRTUALMETHODV(ResultType, Result, Tag \
1640 , EntryProbe, ReturnProbe) \
1641 \
1642 DT_RETURN_MARK_DECL_FOR(Result, CallNonvirtual##Result##MethodV, ResultType \
1643 , ReturnProbe);\
1644 \
1645 JNI_ENTRY(ResultType, \
1646 jni_CallNonvirtual##Result##MethodV(JNIEnv *env, jobject obj, jclass cls, jmethodID methodID, va_list args)) \
1647 JNIWrapper("CallNonvitual" XSTR(Result) "MethodV"); \
1648 \
1649 EntryProbe;\
1650 ResultType ret;\
1651 DT_RETURN_MARK_FOR(Result, CallNonvirtual##Result##MethodV, ResultType, \
1652 (const ResultType&)ret);\
1653 \
1654 JavaValue jvalue(Tag); \
1655 JNI_ArgumentPusherVaArg ap(methodID, args); \
1656 jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK_0); \
1657 ret = jvalue.get_##ResultType(); \
1658 return ret;\
1659 JNI_END
1660
1661 // the runtime type of subword integral basic types is integer
1662 DEFINE_CALLNONVIRTUALMETHODV(jboolean, Boolean, T_BOOLEAN
1663 , HOTSPOT_JNI_CALLNONVIRTUALBOOLEANMETHODV_ENTRY(env, obj, cls, (uintptr_t)methodID),
1664 HOTSPOT_JNI_CALLNONVIRTUALBOOLEANMETHODV_RETURN(_ret_ref))
1665 DEFINE_CALLNONVIRTUALMETHODV(jbyte, Byte, T_BYTE
1666 , HOTSPOT_JNI_CALLNONVIRTUALBYTEMETHODV_ENTRY(env, obj, cls, (uintptr_t)methodID),
1667 HOTSPOT_JNI_CALLNONVIRTUALBYTEMETHODV_RETURN(_ret_ref))
1668 DEFINE_CALLNONVIRTUALMETHODV(jchar, Char, T_CHAR
1669 , HOTSPOT_JNI_CALLNONVIRTUALCHARMETHODV_ENTRY(env, obj, cls, (uintptr_t)methodID),
1670 HOTSPOT_JNI_CALLNONVIRTUALCHARMETHODV_RETURN(_ret_ref))
1671 DEFINE_CALLNONVIRTUALMETHODV(jshort, Short, T_SHORT
1672 , HOTSPOT_JNI_CALLNONVIRTUALSHORTMETHODV_ENTRY(env, obj, cls, (uintptr_t)methodID),
1673 HOTSPOT_JNI_CALLNONVIRTUALSHORTMETHODV_RETURN(_ret_ref))
1674
1675 DEFINE_CALLNONVIRTUALMETHODV(jobject, Object, T_OBJECT
1676 , HOTSPOT_JNI_CALLNONVIRTUALOBJECTMETHODV_ENTRY(env, obj, cls, (uintptr_t)methodID),
1677 HOTSPOT_JNI_CALLNONVIRTUALOBJECTMETHODV_RETURN(_ret_ref))
1678 DEFINE_CALLNONVIRTUALMETHODV(jint, Int, T_INT
1679 , HOTSPOT_JNI_CALLNONVIRTUALINTMETHODV_ENTRY(env, obj, cls, (uintptr_t)methodID),
1680 HOTSPOT_JNI_CALLNONVIRTUALINTMETHODV_RETURN(_ret_ref))
1681 DEFINE_CALLNONVIRTUALMETHODV(jlong, Long, T_LONG
1682 , HOTSPOT_JNI_CALLNONVIRTUALLONGMETHODV_ENTRY(env, obj, cls, (uintptr_t)methodID),
1683 // Float and double probes don't return value because dtrace doesn't currently support it
1684 HOTSPOT_JNI_CALLNONVIRTUALLONGMETHODV_RETURN(_ret_ref))
1685 DEFINE_CALLNONVIRTUALMETHODV(jfloat, Float, T_FLOAT
1686 , HOTSPOT_JNI_CALLNONVIRTUALFLOATMETHODV_ENTRY(env, obj, cls, (uintptr_t)methodID),
1687 HOTSPOT_JNI_CALLNONVIRTUALFLOATMETHODV_RETURN())
1688 DEFINE_CALLNONVIRTUALMETHODV(jdouble, Double, T_DOUBLE
1689 , HOTSPOT_JNI_CALLNONVIRTUALDOUBLEMETHODV_ENTRY(env, obj, cls, (uintptr_t)methodID),
1690 HOTSPOT_JNI_CALLNONVIRTUALDOUBLEMETHODV_RETURN())
1691
1692 #define DEFINE_CALLNONVIRTUALMETHODA(ResultType, Result, Tag \
1693 , EntryProbe, ReturnProbe) \
1694 \
1695 DT_RETURN_MARK_DECL_FOR(Result, CallNonvirtual##Result##MethodA, ResultType \
1696 , ReturnProbe);\
1697 \
1698 JNI_ENTRY(ResultType, \
1699 jni_CallNonvirtual##Result##MethodA(JNIEnv *env, jobject obj, jclass cls, jmethodID methodID, const jvalue *args)) \
1700 JNIWrapper("CallNonvitual" XSTR(Result) "MethodA"); \
1701 \
1702 EntryProbe;\
1703 ResultType ret;\
1704 DT_RETURN_MARK_FOR(Result, CallNonvirtual##Result##MethodA, ResultType, \
1705 (const ResultType&)ret);\
1706 \
1707 JavaValue jvalue(Tag); \
1708 JNI_ArgumentPusherArray ap(methodID, args); \
1709 jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK_0); \
1710 ret = jvalue.get_##ResultType(); \
1711 return ret;\
1712 JNI_END
1713
1714 // the runtime type of subword integral basic types is integer
1715 DEFINE_CALLNONVIRTUALMETHODA(jboolean, Boolean, T_BOOLEAN
1716 , HOTSPOT_JNI_CALLNONVIRTUALBOOLEANMETHODA_ENTRY(env, obj, cls, (uintptr_t)methodID),
1717 HOTSPOT_JNI_CALLNONVIRTUALBOOLEANMETHODA_RETURN(_ret_ref))
1718 DEFINE_CALLNONVIRTUALMETHODA(jbyte, Byte, T_BYTE
1719 , HOTSPOT_JNI_CALLNONVIRTUALBYTEMETHODA_ENTRY(env, obj, cls, (uintptr_t)methodID),
1720 HOTSPOT_JNI_CALLNONVIRTUALBYTEMETHODA_RETURN(_ret_ref))
1721 DEFINE_CALLNONVIRTUALMETHODA(jchar, Char, T_CHAR
1722 , HOTSPOT_JNI_CALLNONVIRTUALCHARMETHODA_ENTRY(env, obj, cls, (uintptr_t)methodID),
1723 HOTSPOT_JNI_CALLNONVIRTUALCHARMETHODA_RETURN(_ret_ref))
1724 DEFINE_CALLNONVIRTUALMETHODA(jshort, Short, T_SHORT
1725 , HOTSPOT_JNI_CALLNONVIRTUALSHORTMETHODA_ENTRY(env, obj, cls, (uintptr_t)methodID),
1726 HOTSPOT_JNI_CALLNONVIRTUALSHORTMETHODA_RETURN(_ret_ref))
1727
1728 DEFINE_CALLNONVIRTUALMETHODA(jobject, Object, T_OBJECT
1729 , HOTSPOT_JNI_CALLNONVIRTUALOBJECTMETHODA_ENTRY(env, obj, cls, (uintptr_t)methodID),
1730 HOTSPOT_JNI_CALLNONVIRTUALOBJECTMETHODA_RETURN(_ret_ref))
1731 DEFINE_CALLNONVIRTUALMETHODA(jint, Int, T_INT
1732 , HOTSPOT_JNI_CALLNONVIRTUALINTMETHODA_ENTRY(env, obj, cls, (uintptr_t)methodID),
1733 HOTSPOT_JNI_CALLNONVIRTUALINTMETHODA_RETURN(_ret_ref))
1734 DEFINE_CALLNONVIRTUALMETHODA(jlong, Long, T_LONG
1735 , HOTSPOT_JNI_CALLNONVIRTUALLONGMETHODA_ENTRY(env, obj, cls, (uintptr_t)methodID),
1736 // Float and double probes don't return value because dtrace doesn't currently support it
1737 HOTSPOT_JNI_CALLNONVIRTUALLONGMETHODA_RETURN(_ret_ref))
1738 DEFINE_CALLNONVIRTUALMETHODA(jfloat, Float, T_FLOAT
1739 , HOTSPOT_JNI_CALLNONVIRTUALFLOATMETHODA_ENTRY(env, obj, cls, (uintptr_t)methodID),
1740 HOTSPOT_JNI_CALLNONVIRTUALFLOATMETHODA_RETURN())
1741 DEFINE_CALLNONVIRTUALMETHODA(jdouble, Double, T_DOUBLE
1742 , HOTSPOT_JNI_CALLNONVIRTUALDOUBLEMETHODA_ENTRY(env, obj, cls, (uintptr_t)methodID),
1743 HOTSPOT_JNI_CALLNONVIRTUALDOUBLEMETHODA_RETURN())
1744
1745 DT_VOID_RETURN_MARK_DECL(CallNonvirtualVoidMethod
1746 , HOTSPOT_JNI_CALLNONVIRTUALVOIDMETHOD_RETURN());
1747 DT_VOID_RETURN_MARK_DECL(CallNonvirtualVoidMethodV
1748 , HOTSPOT_JNI_CALLNONVIRTUALVOIDMETHODV_RETURN());
1749 DT_VOID_RETURN_MARK_DECL(CallNonvirtualVoidMethodA
1750 , HOTSPOT_JNI_CALLNONVIRTUALVOIDMETHODA_RETURN());
1751
1752 JNI_ENTRY(void, jni_CallNonvirtualVoidMethod(JNIEnv *env, jobject obj, jclass cls, jmethodID methodID, ...))
1753 JNIWrapper("CallNonvirtualVoidMethod");
1754
1755 HOTSPOT_JNI_CALLNONVIRTUALVOIDMETHOD_ENTRY(env, obj, cls, (uintptr_t) methodID);
1756 DT_VOID_RETURN_MARK(CallNonvirtualVoidMethod);
1757
1758 va_list args;
1759 va_start(args, methodID);
1760 JavaValue jvalue(T_VOID);
1761 JNI_ArgumentPusherVaArg ap(methodID, args);
1762 jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK);
1763 va_end(args);
1764 JNI_END
1765
1766
1767 JNI_ENTRY(void, jni_CallNonvirtualVoidMethodV(JNIEnv *env, jobject obj, jclass cls, jmethodID methodID, va_list args))
1768 JNIWrapper("CallNonvirtualVoidMethodV");
1769
1770 HOTSPOT_JNI_CALLNONVIRTUALVOIDMETHODV_ENTRY(
1771 env, obj, cls, (uintptr_t) methodID);
1772 DT_VOID_RETURN_MARK(CallNonvirtualVoidMethodV);
1773
1774 JavaValue jvalue(T_VOID);
1775 JNI_ArgumentPusherVaArg ap(methodID, args);
1776 jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK);
1777 JNI_END
1778
1779
1780 JNI_ENTRY(void, jni_CallNonvirtualVoidMethodA(JNIEnv *env, jobject obj, jclass cls, jmethodID methodID, const jvalue *args))
1781 JNIWrapper("CallNonvirtualVoidMethodA");
1782 HOTSPOT_JNI_CALLNONVIRTUALVOIDMETHODA_ENTRY(
1783 env, obj, cls, (uintptr_t) methodID);
1784 DT_VOID_RETURN_MARK(CallNonvirtualVoidMethodA);
1785 JavaValue jvalue(T_VOID);
1786 JNI_ArgumentPusherArray ap(methodID, args);
1787 jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK);
1788 JNI_END
1789
1790
1791
1792 #define DEFINE_CALLSTATICMETHOD(ResultType, Result, Tag \
1793 , EntryProbe, ResultProbe) \
1794 \
1795 DT_RETURN_MARK_DECL_FOR(Result, CallStatic##Result##Method, ResultType \
1796 , ResultProbe); \
1797 \
1798 JNI_ENTRY(ResultType, \
1799 jni_CallStatic##Result##Method(JNIEnv *env, jclass cls, jmethodID methodID, ...)) \
1800 JNIWrapper("CallStatic" XSTR(Result) "Method"); \
1801 \
1802 EntryProbe; \
1803 ResultType ret = 0;\
1804 DT_RETURN_MARK_FOR(Result, CallStatic##Result##Method, ResultType, \
1805 (const ResultType&)ret);\
1806 \
1807 va_list args; \
1808 va_start(args, methodID); \
1809 JavaValue jvalue(Tag); \
1810 JNI_ArgumentPusherVaArg ap(methodID, args); \
1811 jni_invoke_static(env, &jvalue, NULL, JNI_STATIC, methodID, &ap, CHECK_0); \
1812 va_end(args); \
1813 ret = jvalue.get_##ResultType(); \
1814 return ret;\
1815 JNI_END
1816
1817 // the runtime type of subword integral basic types is integer
1818 DEFINE_CALLSTATICMETHOD(jboolean, Boolean, T_BOOLEAN
1819 , HOTSPOT_JNI_CALLSTATICBOOLEANMETHOD_ENTRY(env, cls, (uintptr_t)methodID),
1820 HOTSPOT_JNI_CALLSTATICBOOLEANMETHOD_RETURN(_ret_ref));
1821 DEFINE_CALLSTATICMETHOD(jbyte, Byte, T_BYTE
1822 , HOTSPOT_JNI_CALLSTATICBYTEMETHOD_ENTRY(env, cls, (uintptr_t)methodID),
1823 HOTSPOT_JNI_CALLSTATICBYTEMETHOD_RETURN(_ret_ref));
1824 DEFINE_CALLSTATICMETHOD(jchar, Char, T_CHAR
1825 , HOTSPOT_JNI_CALLSTATICCHARMETHOD_ENTRY(env, cls, (uintptr_t)methodID),
1826 HOTSPOT_JNI_CALLSTATICCHARMETHOD_RETURN(_ret_ref));
1827 DEFINE_CALLSTATICMETHOD(jshort, Short, T_SHORT
1828 , HOTSPOT_JNI_CALLSTATICSHORTMETHOD_ENTRY(env, cls, (uintptr_t)methodID),
1829 HOTSPOT_JNI_CALLSTATICSHORTMETHOD_RETURN(_ret_ref));
1830
1831 DEFINE_CALLSTATICMETHOD(jobject, Object, T_OBJECT
1832 , HOTSPOT_JNI_CALLSTATICOBJECTMETHOD_ENTRY(env, cls, (uintptr_t)methodID),
1833 HOTSPOT_JNI_CALLSTATICOBJECTMETHOD_RETURN(_ret_ref));
1834 DEFINE_CALLSTATICMETHOD(jint, Int, T_INT
1835 , HOTSPOT_JNI_CALLSTATICINTMETHOD_ENTRY(env, cls, (uintptr_t)methodID),
1836 HOTSPOT_JNI_CALLSTATICINTMETHOD_RETURN(_ret_ref));
1837 DEFINE_CALLSTATICMETHOD(jlong, Long, T_LONG
1838 , HOTSPOT_JNI_CALLSTATICLONGMETHOD_ENTRY(env, cls, (uintptr_t)methodID),
1839 HOTSPOT_JNI_CALLSTATICLONGMETHOD_RETURN(_ret_ref));
1840 // Float and double probes don't return value because dtrace doesn't currently support it
1841 DEFINE_CALLSTATICMETHOD(jfloat, Float, T_FLOAT
1842 , HOTSPOT_JNI_CALLSTATICFLOATMETHOD_ENTRY(env, cls, (uintptr_t)methodID),
1843 HOTSPOT_JNI_CALLSTATICFLOATMETHOD_RETURN());
1844 DEFINE_CALLSTATICMETHOD(jdouble, Double, T_DOUBLE
1845 , HOTSPOT_JNI_CALLSTATICDOUBLEMETHOD_ENTRY(env, cls, (uintptr_t)methodID),
1846 HOTSPOT_JNI_CALLSTATICDOUBLEMETHOD_RETURN());
1847
1848 #define DEFINE_CALLSTATICMETHODV(ResultType, Result, Tag \
1849 , EntryProbe, ResultProbe) \
1850 \
1851 DT_RETURN_MARK_DECL_FOR(Result, CallStatic##Result##MethodV, ResultType \
1852 , ResultProbe); \
1853 \
1854 JNI_ENTRY(ResultType, \
1855 jni_CallStatic##Result##MethodV(JNIEnv *env, jclass cls, jmethodID methodID, va_list args)) \
1856 JNIWrapper("CallStatic" XSTR(Result) "MethodV"); \
1857 \
1858 EntryProbe; \
1859 ResultType ret = 0;\
1860 DT_RETURN_MARK_FOR(Result, CallStatic##Result##MethodV, ResultType, \
1861 (const ResultType&)ret);\
1862 \
1863 JavaValue jvalue(Tag); \
1864 JNI_ArgumentPusherVaArg ap(methodID, args); \
1865 /* Make sure class is initialized before trying to invoke its method */ \
1866 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); \
1867 k->initialize(CHECK_0); \
1868 jni_invoke_static(env, &jvalue, NULL, JNI_STATIC, methodID, &ap, CHECK_0); \
1869 va_end(args); \
1870 ret = jvalue.get_##ResultType(); \
1871 return ret;\
1872 JNI_END
1873
1874 // the runtime type of subword integral basic types is integer
1875 DEFINE_CALLSTATICMETHODV(jboolean, Boolean, T_BOOLEAN
1876 , HOTSPOT_JNI_CALLSTATICBOOLEANMETHODV_ENTRY(env, cls, (uintptr_t)methodID),
1877 HOTSPOT_JNI_CALLSTATICBOOLEANMETHODV_RETURN(_ret_ref));
1878 DEFINE_CALLSTATICMETHODV(jbyte, Byte, T_BYTE
1879 , HOTSPOT_JNI_CALLSTATICBYTEMETHODV_ENTRY(env, cls, (uintptr_t)methodID),
1880 HOTSPOT_JNI_CALLSTATICBYTEMETHODV_RETURN(_ret_ref));
1881 DEFINE_CALLSTATICMETHODV(jchar, Char, T_CHAR
1882 , HOTSPOT_JNI_CALLSTATICCHARMETHODV_ENTRY(env, cls, (uintptr_t)methodID),
1883 HOTSPOT_JNI_CALLSTATICCHARMETHODV_RETURN(_ret_ref));
1884 DEFINE_CALLSTATICMETHODV(jshort, Short, T_SHORT
1885 , HOTSPOT_JNI_CALLSTATICSHORTMETHODV_ENTRY(env, cls, (uintptr_t)methodID),
1886 HOTSPOT_JNI_CALLSTATICSHORTMETHODV_RETURN(_ret_ref));
1887
1888 DEFINE_CALLSTATICMETHODV(jobject, Object, T_OBJECT
1889 , HOTSPOT_JNI_CALLSTATICOBJECTMETHODV_ENTRY(env, cls, (uintptr_t)methodID),
1890 HOTSPOT_JNI_CALLSTATICOBJECTMETHODV_RETURN(_ret_ref));
1891 DEFINE_CALLSTATICMETHODV(jint, Int, T_INT
1892 , HOTSPOT_JNI_CALLSTATICINTMETHODV_ENTRY(env, cls, (uintptr_t)methodID),
1893 HOTSPOT_JNI_CALLSTATICINTMETHODV_RETURN(_ret_ref));
1894 DEFINE_CALLSTATICMETHODV(jlong, Long, T_LONG
1895 , HOTSPOT_JNI_CALLSTATICLONGMETHODV_ENTRY(env, cls, (uintptr_t)methodID),
1896 HOTSPOT_JNI_CALLSTATICLONGMETHODV_RETURN(_ret_ref));
1897 // Float and double probes don't return value because dtrace doesn't currently support it
1898 DEFINE_CALLSTATICMETHODV(jfloat, Float, T_FLOAT
1899 , HOTSPOT_JNI_CALLSTATICFLOATMETHODV_ENTRY(env, cls, (uintptr_t)methodID),
1900 HOTSPOT_JNI_CALLSTATICFLOATMETHODV_RETURN());
1901 DEFINE_CALLSTATICMETHODV(jdouble, Double, T_DOUBLE
1902 , HOTSPOT_JNI_CALLSTATICDOUBLEMETHODV_ENTRY(env, cls, (uintptr_t)methodID),
1903 HOTSPOT_JNI_CALLSTATICDOUBLEMETHODV_RETURN());
1904
1905 #define DEFINE_CALLSTATICMETHODA(ResultType, Result, Tag \
1906 , EntryProbe, ResultProbe) \
1907 \
1908 DT_RETURN_MARK_DECL_FOR(Result, CallStatic##Result##MethodA, ResultType \
1909 , ResultProbe); \
1910 \
1911 JNI_ENTRY(ResultType, \
1912 jni_CallStatic##Result##MethodA(JNIEnv *env, jclass cls, jmethodID methodID, const jvalue *args)) \
1913 JNIWrapper("CallStatic" XSTR(Result) "MethodA"); \
1914 \
1915 EntryProbe; \
1916 ResultType ret = 0;\
1917 DT_RETURN_MARK_FOR(Result, CallStatic##Result##MethodA, ResultType, \
1918 (const ResultType&)ret);\
1919 \
1920 JavaValue jvalue(Tag); \
1921 JNI_ArgumentPusherArray ap(methodID, args); \
1922 jni_invoke_static(env, &jvalue, NULL, JNI_STATIC, methodID, &ap, CHECK_0); \
1923 ret = jvalue.get_##ResultType(); \
1924 return ret;\
1925 JNI_END
1926
1927 // the runtime type of subword integral basic types is integer
1928 DEFINE_CALLSTATICMETHODA(jboolean, Boolean, T_BOOLEAN
1929 , HOTSPOT_JNI_CALLSTATICBOOLEANMETHODA_ENTRY(env, cls, (uintptr_t)methodID),
1930 HOTSPOT_JNI_CALLSTATICBOOLEANMETHODA_RETURN(_ret_ref));
1931 DEFINE_CALLSTATICMETHODA(jbyte, Byte, T_BYTE
1932 , HOTSPOT_JNI_CALLSTATICBYTEMETHODA_ENTRY(env, cls, (uintptr_t)methodID),
1933 HOTSPOT_JNI_CALLSTATICBYTEMETHODA_RETURN(_ret_ref));
1934 DEFINE_CALLSTATICMETHODA(jchar, Char, T_CHAR
1935 , HOTSPOT_JNI_CALLSTATICCHARMETHODA_ENTRY(env, cls, (uintptr_t)methodID),
1936 HOTSPOT_JNI_CALLSTATICCHARMETHODA_RETURN(_ret_ref));
1937 DEFINE_CALLSTATICMETHODA(jshort, Short, T_SHORT
1938 , HOTSPOT_JNI_CALLSTATICSHORTMETHODA_ENTRY(env, cls, (uintptr_t)methodID),
1939 HOTSPOT_JNI_CALLSTATICSHORTMETHODA_RETURN(_ret_ref));
1940
1941 DEFINE_CALLSTATICMETHODA(jobject, Object, T_OBJECT
1942 , HOTSPOT_JNI_CALLSTATICOBJECTMETHODA_ENTRY(env, cls, (uintptr_t)methodID),
1943 HOTSPOT_JNI_CALLSTATICOBJECTMETHODA_RETURN(_ret_ref));
1944 DEFINE_CALLSTATICMETHODA(jint, Int, T_INT
1945 , HOTSPOT_JNI_CALLSTATICINTMETHODA_ENTRY(env, cls, (uintptr_t)methodID),
1946 HOTSPOT_JNI_CALLSTATICINTMETHODA_RETURN(_ret_ref));
1947 DEFINE_CALLSTATICMETHODA(jlong, Long, T_LONG
1948 , HOTSPOT_JNI_CALLSTATICLONGMETHODA_ENTRY(env, cls, (uintptr_t)methodID),
1949 HOTSPOT_JNI_CALLSTATICLONGMETHODA_RETURN(_ret_ref));
1950 // Float and double probes don't return value because dtrace doesn't currently support it
1951 DEFINE_CALLSTATICMETHODA(jfloat, Float, T_FLOAT
1952 , HOTSPOT_JNI_CALLSTATICFLOATMETHODA_ENTRY(env, cls, (uintptr_t)methodID),
1953 HOTSPOT_JNI_CALLSTATICFLOATMETHODA_RETURN());
1954 DEFINE_CALLSTATICMETHODA(jdouble, Double, T_DOUBLE
1955 , HOTSPOT_JNI_CALLSTATICDOUBLEMETHODA_ENTRY(env, cls, (uintptr_t)methodID),
1956 HOTSPOT_JNI_CALLSTATICDOUBLEMETHODA_RETURN());
1957
1958 DT_VOID_RETURN_MARK_DECL(CallStaticVoidMethod
1959 , HOTSPOT_JNI_CALLSTATICVOIDMETHOD_RETURN());
1960 DT_VOID_RETURN_MARK_DECL(CallStaticVoidMethodV
1961 , HOTSPOT_JNI_CALLSTATICVOIDMETHODV_RETURN());
1962 DT_VOID_RETURN_MARK_DECL(CallStaticVoidMethodA
1963 , HOTSPOT_JNI_CALLSTATICVOIDMETHODA_RETURN());
1964
1965 JNI_ENTRY(void, jni_CallStaticVoidMethod(JNIEnv *env, jclass cls, jmethodID methodID, ...))
1966 JNIWrapper("CallStaticVoidMethod");
1967 HOTSPOT_JNI_CALLSTATICVOIDMETHOD_ENTRY(env, cls, (uintptr_t) methodID);
1968 DT_VOID_RETURN_MARK(CallStaticVoidMethod);
1969
1970 va_list args;
1971 va_start(args, methodID);
1972 JavaValue jvalue(T_VOID);
1973 JNI_ArgumentPusherVaArg ap(methodID, args);
1974 jni_invoke_static(env, &jvalue, NULL, JNI_STATIC, methodID, &ap, CHECK);
1975 va_end(args);
1976 JNI_END
1977
1978
1979 JNI_ENTRY(void, jni_CallStaticVoidMethodV(JNIEnv *env, jclass cls, jmethodID methodID, va_list args))
1980 JNIWrapper("CallStaticVoidMethodV");
1981 HOTSPOT_JNI_CALLSTATICVOIDMETHODV_ENTRY(env, cls, (uintptr_t) methodID);
1982 DT_VOID_RETURN_MARK(CallStaticVoidMethodV);
1983
1984 JavaValue jvalue(T_VOID);
1985 JNI_ArgumentPusherVaArg ap(methodID, args);
1986 jni_invoke_static(env, &jvalue, NULL, JNI_STATIC, methodID, &ap, CHECK);
1987 JNI_END
1988
1989
1990 JNI_ENTRY(void, jni_CallStaticVoidMethodA(JNIEnv *env, jclass cls, jmethodID methodID, const jvalue *args))
1991 JNIWrapper("CallStaticVoidMethodA");
1992 HOTSPOT_JNI_CALLSTATICVOIDMETHODA_ENTRY(env, cls, (uintptr_t) methodID);
1993 DT_VOID_RETURN_MARK(CallStaticVoidMethodA);
1994
1995 JavaValue jvalue(T_VOID);
1996 JNI_ArgumentPusherArray ap(methodID, args);
1997 jni_invoke_static(env, &jvalue, NULL, JNI_STATIC, methodID, &ap, CHECK);
1998 JNI_END
1999
2000
2001 //
2002 // Accessing Fields
2003 //
2004
2005
2006 DT_RETURN_MARK_DECL(GetFieldID, jfieldID
2007 , HOTSPOT_JNI_GETFIELDID_RETURN((uintptr_t)_ret_ref));
2008
2009 JNI_ENTRY(jfieldID, jni_GetFieldID(JNIEnv *env, jclass clazz,
2010 const char *name, const char *sig))
2011 JNIWrapper("GetFieldID");
2012 HOTSPOT_JNI_GETFIELDID_ENTRY(env, clazz, (char *) name, (char *) sig);
2013 jfieldID ret = 0;
2014 DT_RETURN_MARK(GetFieldID, jfieldID, (const jfieldID&)ret);
2015
2016 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz));
2017
2018 // The class should have been loaded (we have an instance of the class
2019 // passed in) so the field and signature should already be in the symbol
2020 // table. If they're not there, the field doesn't exist.
2021 TempNewSymbol fieldname = SymbolTable::probe(name, (int)strlen(name));
2022 TempNewSymbol signame = SymbolTable::probe(sig, (int)strlen(sig));
2023 if (fieldname == NULL || signame == NULL) {
2024 ResourceMark rm;
2025 THROW_MSG_0(vmSymbols::java_lang_NoSuchFieldError(), err_msg("%s.%s %s", k->external_name(), name, sig));
2026 }
2027
2028 // Make sure class is initialized before handing id's out to fields
2029 k->initialize(CHECK_NULL);
2030
2031 fieldDescriptor fd;
2032 if (!k->is_instance_klass() ||
2033 !InstanceKlass::cast(k)->find_field(fieldname, signame, false, &fd)) {
2034 ResourceMark rm;
2035 THROW_MSG_0(vmSymbols::java_lang_NoSuchFieldError(), err_msg("%s.%s %s", k->external_name(), name, sig));
2036 }
2037
2038 // A jfieldID for a non-static field is simply the offset of the field within the instanceOop
2039 // It may also have hash bits for k, if VerifyJNIFields is turned on.
2040 ret = jfieldIDWorkaround::to_instance_jfieldID(k, fd.offset());
2041 return ret;
2042 JNI_END
2043
2044
2045 JNI_ENTRY(jobject, jni_GetObjectField(JNIEnv *env, jobject obj, jfieldID fieldID))
2046 JNIWrapper("GetObjectField");
2047 HOTSPOT_JNI_GETOBJECTFIELD_ENTRY(env, obj, (uintptr_t) fieldID);
2048 oop o = JNIHandles::resolve_non_null(obj);
2049 Klass* k = o->klass();
2050 int offset = jfieldIDWorkaround::from_instance_jfieldID(k, fieldID);
2051 // Keep JVMTI addition small and only check enabled flag here.
2052 // jni_GetField_probe() assumes that is okay to create handles.
2053 if (JvmtiExport::should_post_field_access()) {
2054 o = JvmtiExport::jni_GetField_probe(thread, obj, o, k, fieldID, false);
2055 }
2056 oop loaded_obj = HeapAccess<ON_UNKNOWN_OOP_REF>::oop_load_at(o, offset);
2057 jobject ret = JNIHandles::make_local(env, loaded_obj);
2058 HOTSPOT_JNI_GETOBJECTFIELD_RETURN(ret);
2059 return ret;
2060 JNI_END
2061
2062
2063
2064 #define DEFINE_GETFIELD(Return,Fieldname,Result \
2065 , EntryProbe, ReturnProbe) \
2066 \
2067 DT_RETURN_MARK_DECL_FOR(Result, Get##Result##Field, Return \
2068 , ReturnProbe); \
2069 \
2070 JNI_ENTRY_NO_PRESERVE(Return, jni_Get##Result##Field(JNIEnv *env, jobject obj, jfieldID fieldID)) \
2071 JNIWrapper("Get" XSTR(Result) "Field"); \
2072 \
2073 EntryProbe; \
2074 Return ret = 0;\
2075 DT_RETURN_MARK_FOR(Result, Get##Result##Field, Return, (const Return&)ret);\
2076 \
2077 oop o = JNIHandles::resolve_non_null(obj); \
2078 Klass* k = o->klass(); \
2079 int offset = jfieldIDWorkaround::from_instance_jfieldID(k, fieldID); \
2080 /* Keep JVMTI addition small and only check enabled flag here. */ \
2081 /* jni_GetField_probe_nh() assumes that is not okay to create handles */ \
2082 /* and creates a ResetNoHandleMark. */ \
2083 if (JvmtiExport::should_post_field_access()) { \
2084 o = JvmtiExport::jni_GetField_probe_nh(thread, obj, o, k, fieldID, false); \
2085 } \
2086 ret = o->Fieldname##_field(offset); \
2087 return ret; \
2088 JNI_END
2089
2090 DEFINE_GETFIELD(jboolean, bool, Boolean
2091 , HOTSPOT_JNI_GETBOOLEANFIELD_ENTRY(env, obj, (uintptr_t)fieldID),
2092 HOTSPOT_JNI_GETBOOLEANFIELD_RETURN(_ret_ref))
2093 DEFINE_GETFIELD(jbyte, byte, Byte
2094 , HOTSPOT_JNI_GETBYTEFIELD_ENTRY(env, obj, (uintptr_t)fieldID),
2095 HOTSPOT_JNI_GETBYTEFIELD_RETURN(_ret_ref))
2096 DEFINE_GETFIELD(jchar, char, Char
2097 , HOTSPOT_JNI_GETCHARFIELD_ENTRY(env, obj, (uintptr_t)fieldID),
2098 HOTSPOT_JNI_GETCHARFIELD_RETURN(_ret_ref))
2099 DEFINE_GETFIELD(jshort, short, Short
2100 , HOTSPOT_JNI_GETSHORTFIELD_ENTRY(env, obj, (uintptr_t)fieldID),
2101 HOTSPOT_JNI_GETSHORTFIELD_RETURN(_ret_ref))
2102 DEFINE_GETFIELD(jint, int, Int
2103 , HOTSPOT_JNI_GETINTFIELD_ENTRY(env, obj, (uintptr_t)fieldID),
2104 HOTSPOT_JNI_GETINTFIELD_RETURN(_ret_ref))
2105 DEFINE_GETFIELD(jlong, long, Long
2106 , HOTSPOT_JNI_GETLONGFIELD_ENTRY(env, obj, (uintptr_t)fieldID),
2107 HOTSPOT_JNI_GETLONGFIELD_RETURN(_ret_ref))
2108 // Float and double probes don't return value because dtrace doesn't currently support it
2109 DEFINE_GETFIELD(jfloat, float, Float
2110 , HOTSPOT_JNI_GETFLOATFIELD_ENTRY(env, obj, (uintptr_t)fieldID),
2111 HOTSPOT_JNI_GETFLOATFIELD_RETURN())
2112 DEFINE_GETFIELD(jdouble, double, Double
2113 , HOTSPOT_JNI_GETDOUBLEFIELD_ENTRY(env, obj, (uintptr_t)fieldID),
2114 HOTSPOT_JNI_GETDOUBLEFIELD_RETURN())
2115
2116 address jni_GetBooleanField_addr() {
2117 return (address)jni_GetBooleanField;
2118 }
2119 address jni_GetByteField_addr() {
2120 return (address)jni_GetByteField;
2121 }
2122 address jni_GetCharField_addr() {
2123 return (address)jni_GetCharField;
2124 }
2125 address jni_GetShortField_addr() {
2126 return (address)jni_GetShortField;
2127 }
2128 address jni_GetIntField_addr() {
2129 return (address)jni_GetIntField;
2130 }
2131 address jni_GetLongField_addr() {
2132 return (address)jni_GetLongField;
2133 }
2134 address jni_GetFloatField_addr() {
2135 return (address)jni_GetFloatField;
2136 }
2137 address jni_GetDoubleField_addr() {
2138 return (address)jni_GetDoubleField;
2139 }
2140
2141 JNI_ENTRY_NO_PRESERVE(void, jni_SetObjectField(JNIEnv *env, jobject obj, jfieldID fieldID, jobject value))
2142 JNIWrapper("SetObjectField");
2143 HOTSPOT_JNI_SETOBJECTFIELD_ENTRY(env, obj, (uintptr_t) fieldID, value);
2144 oop o = JNIHandles::resolve_non_null(obj);
2145 Klass* k = o->klass();
2146 int offset = jfieldIDWorkaround::from_instance_jfieldID(k, fieldID);
2147 // Keep JVMTI addition small and only check enabled flag here.
2148 // jni_SetField_probe_nh() assumes that is not okay to create handles
2149 // and creates a ResetNoHandleMark.
2150 if (JvmtiExport::should_post_field_modification()) {
2151 jvalue field_value;
2152 field_value.l = value;
2153 o = JvmtiExport::jni_SetField_probe_nh(thread, obj, o, k, fieldID, false, JVM_SIGNATURE_CLASS, (jvalue *)&field_value);
2154 }
2155 HeapAccess<ON_UNKNOWN_OOP_REF>::oop_store_at(o, offset, JNIHandles::resolve(value));
2156 HOTSPOT_JNI_SETOBJECTFIELD_RETURN();
2157 JNI_END
2158
2159
2160 #define DEFINE_SETFIELD(Argument,Fieldname,Result,SigType,unionType \
2161 , EntryProbe, ReturnProbe) \
2162 \
2163 JNI_ENTRY_NO_PRESERVE(void, jni_Set##Result##Field(JNIEnv *env, jobject obj, jfieldID fieldID, Argument value)) \
2164 JNIWrapper("Set" XSTR(Result) "Field"); \
2165 \
2166 EntryProbe; \
2167 \
2168 oop o = JNIHandles::resolve_non_null(obj); \
2169 Klass* k = o->klass(); \
2170 int offset = jfieldIDWorkaround::from_instance_jfieldID(k, fieldID); \
2171 /* Keep JVMTI addition small and only check enabled flag here. */ \
2172 /* jni_SetField_probe_nh() assumes that is not okay to create handles */ \
2173 /* and creates a ResetNoHandleMark. */ \
2174 if (JvmtiExport::should_post_field_modification()) { \
2175 jvalue field_value; \
2176 field_value.unionType = value; \
2177 o = JvmtiExport::jni_SetField_probe_nh(thread, obj, o, k, fieldID, false, SigType, (jvalue *)&field_value); \
2178 } \
2179 if (SigType == JVM_SIGNATURE_BOOLEAN) { value = ((jboolean)value) & 1; } \
2180 o->Fieldname##_field_put(offset, value); \
2181 ReturnProbe; \
2182 JNI_END
2183
2184 DEFINE_SETFIELD(jboolean, bool, Boolean, JVM_SIGNATURE_BOOLEAN, z
2185 , HOTSPOT_JNI_SETBOOLEANFIELD_ENTRY(env, obj, (uintptr_t)fieldID, value),
2186 HOTSPOT_JNI_SETBOOLEANFIELD_RETURN())
2187 DEFINE_SETFIELD(jbyte, byte, Byte, JVM_SIGNATURE_BYTE, b
2188 , HOTSPOT_JNI_SETBYTEFIELD_ENTRY(env, obj, (uintptr_t)fieldID, value),
2189 HOTSPOT_JNI_SETBYTEFIELD_RETURN())
2190 DEFINE_SETFIELD(jchar, char, Char, JVM_SIGNATURE_CHAR, c
2191 , HOTSPOT_JNI_SETCHARFIELD_ENTRY(env, obj, (uintptr_t)fieldID, value),
2192 HOTSPOT_JNI_SETCHARFIELD_RETURN())
2193 DEFINE_SETFIELD(jshort, short, Short, JVM_SIGNATURE_SHORT, s
2194 , HOTSPOT_JNI_SETSHORTFIELD_ENTRY(env, obj, (uintptr_t)fieldID, value),
2195 HOTSPOT_JNI_SETSHORTFIELD_RETURN())
2196 DEFINE_SETFIELD(jint, int, Int, JVM_SIGNATURE_INT, i
2197 , HOTSPOT_JNI_SETINTFIELD_ENTRY(env, obj, (uintptr_t)fieldID, value),
2198 HOTSPOT_JNI_SETINTFIELD_RETURN())
2199 DEFINE_SETFIELD(jlong, long, Long, JVM_SIGNATURE_LONG, j
2200 , HOTSPOT_JNI_SETLONGFIELD_ENTRY(env, obj, (uintptr_t)fieldID, value),
2201 HOTSPOT_JNI_SETLONGFIELD_RETURN())
2202 // Float and double probes don't return value because dtrace doesn't currently support it
2203 DEFINE_SETFIELD(jfloat, float, Float, JVM_SIGNATURE_FLOAT, f
2204 , HOTSPOT_JNI_SETFLOATFIELD_ENTRY(env, obj, (uintptr_t)fieldID),
2205 HOTSPOT_JNI_SETFLOATFIELD_RETURN())
2206 DEFINE_SETFIELD(jdouble, double, Double, JVM_SIGNATURE_DOUBLE, d
2207 , HOTSPOT_JNI_SETDOUBLEFIELD_ENTRY(env, obj, (uintptr_t)fieldID),
2208 HOTSPOT_JNI_SETDOUBLEFIELD_RETURN())
2209
2210 DT_RETURN_MARK_DECL(ToReflectedField, jobject
2211 , HOTSPOT_JNI_TOREFLECTEDFIELD_RETURN(_ret_ref));
2212
2213 JNI_ENTRY(jobject, jni_ToReflectedField(JNIEnv *env, jclass cls, jfieldID fieldID, jboolean isStatic))
2214 JNIWrapper("ToReflectedField");
2215 HOTSPOT_JNI_TOREFLECTEDFIELD_ENTRY(env, cls, (uintptr_t) fieldID, isStatic);
2216 jobject ret = NULL;
2217 DT_RETURN_MARK(ToReflectedField, jobject, (const jobject&)ret);
2218
2219 fieldDescriptor fd;
2220 bool found = false;
2221 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls));
2222
2223 assert(jfieldIDWorkaround::is_static_jfieldID(fieldID) == (isStatic != 0), "invalid fieldID");
2224
2225 if (isStatic) {
2226 // Static field. The fieldID a JNIid specifying the field holder and the offset within the Klass*.
2227 JNIid* id = jfieldIDWorkaround::from_static_jfieldID(fieldID);
2228 assert(id->is_static_field_id(), "invalid static field id");
2229 found = id->find_local_field(&fd);
2230 } else {
2231 // Non-static field. The fieldID is really the offset of the field within the instanceOop.
2232 int offset = jfieldIDWorkaround::from_instance_jfieldID(k, fieldID);
2233 found = InstanceKlass::cast(k)->find_field_from_offset(offset, false, &fd);
2234 }
2235 assert(found, "bad fieldID passed into jni_ToReflectedField");
2236 oop reflected = Reflection::new_field(&fd, CHECK_NULL);
2237 ret = JNIHandles::make_local(env, reflected);
2238 return ret;
2239 JNI_END
2240
2241
2242 //
2243 // Accessing Static Fields
2244 //
2245 DT_RETURN_MARK_DECL(GetStaticFieldID, jfieldID
2246 , HOTSPOT_JNI_GETSTATICFIELDID_RETURN((uintptr_t)_ret_ref));
2247
2248 JNI_ENTRY(jfieldID, jni_GetStaticFieldID(JNIEnv *env, jclass clazz,
2249 const char *name, const char *sig))
2250 JNIWrapper("GetStaticFieldID");
2251 HOTSPOT_JNI_GETSTATICFIELDID_ENTRY(env, clazz, (char *) name, (char *) sig);
2252 jfieldID ret = NULL;
2253 DT_RETURN_MARK(GetStaticFieldID, jfieldID, (const jfieldID&)ret);
2254
2255 // The class should have been loaded (we have an instance of the class
2256 // passed in) so the field and signature should already be in the symbol
2257 // table. If they're not there, the field doesn't exist.
2258 TempNewSymbol fieldname = SymbolTable::probe(name, (int)strlen(name));
2259 TempNewSymbol signame = SymbolTable::probe(sig, (int)strlen(sig));
2260 if (fieldname == NULL || signame == NULL) {
2261 THROW_MSG_0(vmSymbols::java_lang_NoSuchFieldError(), (char*) name);
2262 }
2263 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz));
2264 // Make sure class is initialized before handing id's out to static fields
2265 k->initialize(CHECK_NULL);
2266
2267 fieldDescriptor fd;
2268 if (!k->is_instance_klass() ||
2269 !InstanceKlass::cast(k)->find_field(fieldname, signame, true, &fd)) {
2270 THROW_MSG_0(vmSymbols::java_lang_NoSuchFieldError(), (char*) name);
2271 }
2272
2273 // A jfieldID for a static field is a JNIid specifying the field holder and the offset within the Klass*
2274 JNIid* id = fd.field_holder()->jni_id_for(fd.offset());
2275 debug_only(id->set_is_static_field_id();)
2276
2277 debug_only(id->verify(fd.field_holder()));
2278
2279 ret = jfieldIDWorkaround::to_static_jfieldID(id);
2280 return ret;
2281 JNI_END
2282
2283
2284 JNI_ENTRY(jobject, jni_GetStaticObjectField(JNIEnv *env, jclass clazz, jfieldID fieldID))
2285 JNIWrapper("GetStaticObjectField");
2286 HOTSPOT_JNI_GETSTATICOBJECTFIELD_ENTRY(env, clazz, (uintptr_t) fieldID);
2287 #if INCLUDE_JNI_CHECK
2288 DEBUG_ONLY(Klass* param_k = jniCheck::validate_class(thread, clazz);)
2289 #endif // INCLUDE_JNI_CHECK
2290 JNIid* id = jfieldIDWorkaround::from_static_jfieldID(fieldID);
2291 assert(id->is_static_field_id(), "invalid static field id");
2292 // Keep JVMTI addition small and only check enabled flag here.
2293 // jni_GetField_probe() assumes that is okay to create handles.
2294 if (JvmtiExport::should_post_field_access()) {
2295 JvmtiExport::jni_GetField_probe(thread, NULL, NULL, id->holder(), fieldID, true);
2296 }
2297 jobject ret = JNIHandles::make_local(id->holder()->java_mirror()->obj_field(id->offset()));
2298 HOTSPOT_JNI_GETSTATICOBJECTFIELD_RETURN(ret);
2299 return ret;
2300 JNI_END
2301
2302
2303 #define DEFINE_GETSTATICFIELD(Return,Fieldname,Result \
2304 , EntryProbe, ReturnProbe) \
2305 \
2306 DT_RETURN_MARK_DECL_FOR(Result, GetStatic##Result##Field, Return \
2307 , ReturnProbe); \
2308 \
2309 JNI_ENTRY(Return, jni_GetStatic##Result##Field(JNIEnv *env, jclass clazz, jfieldID fieldID)) \
2310 JNIWrapper("GetStatic" XSTR(Result) "Field"); \
2311 EntryProbe; \
2312 Return ret = 0;\
2313 DT_RETURN_MARK_FOR(Result, GetStatic##Result##Field, Return, \
2314 (const Return&)ret);\
2315 JNIid* id = jfieldIDWorkaround::from_static_jfieldID(fieldID); \
2316 assert(id->is_static_field_id(), "invalid static field id"); \
2317 /* Keep JVMTI addition small and only check enabled flag here. */ \
2318 /* jni_GetField_probe() assumes that is okay to create handles. */ \
2319 if (JvmtiExport::should_post_field_access()) { \
2320 JvmtiExport::jni_GetField_probe(thread, NULL, NULL, id->holder(), fieldID, true); \
2321 } \
2322 ret = id->holder()->java_mirror()-> Fieldname##_field (id->offset()); \
2323 return ret;\
2324 JNI_END
2325
2326 DEFINE_GETSTATICFIELD(jboolean, bool, Boolean
2327 , HOTSPOT_JNI_GETSTATICBOOLEANFIELD_ENTRY(env, clazz, (uintptr_t) fieldID), HOTSPOT_JNI_GETSTATICBOOLEANFIELD_RETURN(_ret_ref))
2328 DEFINE_GETSTATICFIELD(jbyte, byte, Byte
2329 , HOTSPOT_JNI_GETSTATICBYTEFIELD_ENTRY(env, clazz, (uintptr_t) fieldID), HOTSPOT_JNI_GETSTATICBYTEFIELD_RETURN(_ret_ref) )
2330 DEFINE_GETSTATICFIELD(jchar, char, Char
2331 , HOTSPOT_JNI_GETSTATICCHARFIELD_ENTRY(env, clazz, (uintptr_t) fieldID), HOTSPOT_JNI_GETSTATICCHARFIELD_RETURN(_ret_ref) )
2332 DEFINE_GETSTATICFIELD(jshort, short, Short
2333 , HOTSPOT_JNI_GETSTATICSHORTFIELD_ENTRY(env, clazz, (uintptr_t) fieldID), HOTSPOT_JNI_GETSTATICSHORTFIELD_RETURN(_ret_ref) )
2334 DEFINE_GETSTATICFIELD(jint, int, Int
2335 , HOTSPOT_JNI_GETSTATICINTFIELD_ENTRY(env, clazz, (uintptr_t) fieldID), HOTSPOT_JNI_GETSTATICINTFIELD_RETURN(_ret_ref) )
2336 DEFINE_GETSTATICFIELD(jlong, long, Long
2337 , HOTSPOT_JNI_GETSTATICLONGFIELD_ENTRY(env, clazz, (uintptr_t) fieldID), HOTSPOT_JNI_GETSTATICLONGFIELD_RETURN(_ret_ref) )
2338 // Float and double probes don't return value because dtrace doesn't currently support it
2339 DEFINE_GETSTATICFIELD(jfloat, float, Float
2340 , HOTSPOT_JNI_GETSTATICFLOATFIELD_ENTRY(env, clazz, (uintptr_t) fieldID), HOTSPOT_JNI_GETSTATICFLOATFIELD_RETURN() )
2341 DEFINE_GETSTATICFIELD(jdouble, double, Double
2342 , HOTSPOT_JNI_GETSTATICDOUBLEFIELD_ENTRY(env, clazz, (uintptr_t) fieldID), HOTSPOT_JNI_GETSTATICDOUBLEFIELD_RETURN() )
2343
2344 JNI_ENTRY(void, jni_SetStaticObjectField(JNIEnv *env, jclass clazz, jfieldID fieldID, jobject value))
2345 JNIWrapper("SetStaticObjectField");
2346 HOTSPOT_JNI_SETSTATICOBJECTFIELD_ENTRY(env, clazz, (uintptr_t) fieldID, value);
2347 JNIid* id = jfieldIDWorkaround::from_static_jfieldID(fieldID);
2348 assert(id->is_static_field_id(), "invalid static field id");
2349 // Keep JVMTI addition small and only check enabled flag here.
2350 // jni_SetField_probe() assumes that is okay to create handles.
2351 if (JvmtiExport::should_post_field_modification()) {
2352 jvalue field_value;
2353 field_value.l = value;
2354 JvmtiExport::jni_SetField_probe(thread, NULL, NULL, id->holder(), fieldID, true, JVM_SIGNATURE_CLASS, (jvalue *)&field_value);
2355 }
2356 id->holder()->java_mirror()->obj_field_put(id->offset(), JNIHandles::resolve(value));
2357 HOTSPOT_JNI_SETSTATICOBJECTFIELD_RETURN();
2358 JNI_END
2359
2360
2361
2362 #define DEFINE_SETSTATICFIELD(Argument,Fieldname,Result,SigType,unionType \
2363 , EntryProbe, ReturnProbe) \
2364 \
2365 JNI_ENTRY(void, jni_SetStatic##Result##Field(JNIEnv *env, jclass clazz, jfieldID fieldID, Argument value)) \
2366 JNIWrapper("SetStatic" XSTR(Result) "Field"); \
2367 EntryProbe; \
2368 \
2369 JNIid* id = jfieldIDWorkaround::from_static_jfieldID(fieldID); \
2370 assert(id->is_static_field_id(), "invalid static field id"); \
2371 /* Keep JVMTI addition small and only check enabled flag here. */ \
2372 /* jni_SetField_probe() assumes that is okay to create handles. */ \
2373 if (JvmtiExport::should_post_field_modification()) { \
2374 jvalue field_value; \
2375 field_value.unionType = value; \
2376 JvmtiExport::jni_SetField_probe(thread, NULL, NULL, id->holder(), fieldID, true, SigType, (jvalue *)&field_value); \
2377 } \
2378 if (SigType == JVM_SIGNATURE_BOOLEAN) { value = ((jboolean)value) & 1; } \
2379 id->holder()->java_mirror()-> Fieldname##_field_put (id->offset(), value); \
2380 ReturnProbe;\
2381 JNI_END
2382
2383 DEFINE_SETSTATICFIELD(jboolean, bool, Boolean, JVM_SIGNATURE_BOOLEAN, z
2384 , HOTSPOT_JNI_SETSTATICBOOLEANFIELD_ENTRY(env, clazz, (uintptr_t)fieldID, value),
2385 HOTSPOT_JNI_SETSTATICBOOLEANFIELD_RETURN())
2386 DEFINE_SETSTATICFIELD(jbyte, byte, Byte, JVM_SIGNATURE_BYTE, b
2387 , HOTSPOT_JNI_SETSTATICBYTEFIELD_ENTRY(env, clazz, (uintptr_t) fieldID, value),
2388 HOTSPOT_JNI_SETSTATICBYTEFIELD_RETURN())
2389 DEFINE_SETSTATICFIELD(jchar, char, Char, JVM_SIGNATURE_CHAR, c
2390 , HOTSPOT_JNI_SETSTATICCHARFIELD_ENTRY(env, clazz, (uintptr_t) fieldID, value),
2391 HOTSPOT_JNI_SETSTATICCHARFIELD_RETURN())
2392 DEFINE_SETSTATICFIELD(jshort, short, Short, JVM_SIGNATURE_SHORT, s
2393 , HOTSPOT_JNI_SETSTATICSHORTFIELD_ENTRY(env, clazz, (uintptr_t) fieldID, value),
2394 HOTSPOT_JNI_SETSTATICSHORTFIELD_RETURN())
2395 DEFINE_SETSTATICFIELD(jint, int, Int, JVM_SIGNATURE_INT, i
2396 , HOTSPOT_JNI_SETSTATICINTFIELD_ENTRY(env, clazz, (uintptr_t) fieldID, value),
2397 HOTSPOT_JNI_SETSTATICINTFIELD_RETURN())
2398 DEFINE_SETSTATICFIELD(jlong, long, Long, JVM_SIGNATURE_LONG, j
2399 , HOTSPOT_JNI_SETSTATICLONGFIELD_ENTRY(env, clazz, (uintptr_t) fieldID, value),
2400 HOTSPOT_JNI_SETSTATICLONGFIELD_RETURN())
2401 // Float and double probes don't return value because dtrace doesn't currently support it
2402 DEFINE_SETSTATICFIELD(jfloat, float, Float, JVM_SIGNATURE_FLOAT, f
2403 , HOTSPOT_JNI_SETSTATICFLOATFIELD_ENTRY(env, clazz, (uintptr_t) fieldID),
2404 HOTSPOT_JNI_SETSTATICFLOATFIELD_RETURN())
2405 DEFINE_SETSTATICFIELD(jdouble, double, Double, JVM_SIGNATURE_DOUBLE, d
2406 , HOTSPOT_JNI_SETSTATICDOUBLEFIELD_ENTRY(env, clazz, (uintptr_t) fieldID),
2407 HOTSPOT_JNI_SETSTATICDOUBLEFIELD_RETURN())
2408
2409 //
2410 // String Operations
2411 //
2412
2413 // Unicode Interface
2414
2415 DT_RETURN_MARK_DECL(NewString, jstring
2416 , HOTSPOT_JNI_NEWSTRING_RETURN(_ret_ref));
2417
2418 JNI_ENTRY(jstring, jni_NewString(JNIEnv *env, const jchar *unicodeChars, jsize len))
2419 JNIWrapper("NewString");
2420 HOTSPOT_JNI_NEWSTRING_ENTRY(env, (uint16_t *) unicodeChars, len);
2421 jstring ret = NULL;
2422 DT_RETURN_MARK(NewString, jstring, (const jstring&)ret);
2423 oop string=java_lang_String::create_oop_from_unicode((jchar*) unicodeChars, len, CHECK_NULL);
2424 ret = (jstring) JNIHandles::make_local(env, string);
2425 return ret;
2426 JNI_END
2427
2428
2429 JNI_ENTRY_NO_PRESERVE(jsize, jni_GetStringLength(JNIEnv *env, jstring string))
2430 JNIWrapper("GetStringLength");
2431 HOTSPOT_JNI_GETSTRINGLENGTH_ENTRY(env, string);
2432 jsize ret = 0;
2433 oop s = JNIHandles::resolve_non_null(string);
2434 ret = java_lang_String::length(s);
2435 HOTSPOT_JNI_GETSTRINGLENGTH_RETURN(ret);
2436 return ret;
2437 JNI_END
2438
2439
2440 JNI_ENTRY_NO_PRESERVE(const jchar*, jni_GetStringChars(
2441 JNIEnv *env, jstring string, jboolean *isCopy))
2442 JNIWrapper("GetStringChars");
2443 HOTSPOT_JNI_GETSTRINGCHARS_ENTRY(env, string, (uintptr_t *) isCopy);
2444 jchar* buf = NULL;
2445 oop s = JNIHandles::resolve_non_null(string);
2446 typeArrayOop s_value = java_lang_String::value(s);
2447 if (s_value != NULL) {
2448 int s_len = java_lang_String::length(s, s_value);
2449 bool is_latin1 = java_lang_String::is_latin1(s);
2450 buf = NEW_C_HEAP_ARRAY_RETURN_NULL(jchar, s_len + 1, mtInternal); // add one for zero termination
2451 /* JNI Specification states return NULL on OOM */
2452 if (buf != NULL) {
2453 if (s_len > 0) {
2454 if (!is_latin1) {
2455 ArrayAccess<>::arraycopy_to_native(s_value, (size_t) typeArrayOopDesc::element_offset<jchar>(0),
2456 buf, s_len);
2457 } else {
2458 for (int i = 0; i < s_len; i++) {
2459 buf[i] = ((jchar) s_value->byte_at(i)) & 0xff;
2460 }
2461 }
2462 }
2463 buf[s_len] = 0;
2464 //%note jni_5
2465 if (isCopy != NULL) {
2466 *isCopy = JNI_TRUE;
2467 }
2468 }
2469 }
2470 HOTSPOT_JNI_GETSTRINGCHARS_RETURN(buf);
2471 return buf;
2472 JNI_END
2473
2474
2475 JNI_ENTRY_NO_PRESERVE(void, jni_ReleaseStringChars(JNIEnv *env, jstring str, const jchar *chars))
2476 JNIWrapper("ReleaseStringChars");
2477 HOTSPOT_JNI_RELEASESTRINGCHARS_ENTRY(env, str, (uint16_t *) chars);
2478 //%note jni_6
2479 if (chars != NULL) {
2480 // Since String objects are supposed to be immutable, don't copy any
2481 // new data back. A bad user will have to go after the char array.
2482 FreeHeap((void*) chars);
2483 }
2484 HOTSPOT_JNI_RELEASESTRINGCHARS_RETURN();
2485 JNI_END
2486
2487
2488 // UTF Interface
2489
2490 DT_RETURN_MARK_DECL(NewStringUTF, jstring
2491 , HOTSPOT_JNI_NEWSTRINGUTF_RETURN(_ret_ref));
2492
2493 JNI_ENTRY(jstring, jni_NewStringUTF(JNIEnv *env, const char *bytes))
2494 JNIWrapper("NewStringUTF");
2495 HOTSPOT_JNI_NEWSTRINGUTF_ENTRY(env, (char *) bytes);
2496 jstring ret;
2497 DT_RETURN_MARK(NewStringUTF, jstring, (const jstring&)ret);
2498
2499 oop result = java_lang_String::create_oop_from_str((char*) bytes, CHECK_NULL);
2500 ret = (jstring) JNIHandles::make_local(env, result);
2501 return ret;
2502 JNI_END
2503
2504
2505 JNI_ENTRY(jsize, jni_GetStringUTFLength(JNIEnv *env, jstring string))
2506 JNIWrapper("GetStringUTFLength");
2507 HOTSPOT_JNI_GETSTRINGUTFLENGTH_ENTRY(env, string);
2508 oop java_string = JNIHandles::resolve_non_null(string);
2509 jsize ret = java_lang_String::utf8_length(java_string);
2510 HOTSPOT_JNI_GETSTRINGUTFLENGTH_RETURN(ret);
2511 return ret;
2512 JNI_END
2513
2514
2515 JNI_ENTRY(const char*, jni_GetStringUTFChars(JNIEnv *env, jstring string, jboolean *isCopy))
2516 JNIWrapper("GetStringUTFChars");
2517 HOTSPOT_JNI_GETSTRINGUTFCHARS_ENTRY(env, string, (uintptr_t *) isCopy);
2518 char* result = NULL;
2519 oop java_string = JNIHandles::resolve_non_null(string);
2520 typeArrayOop s_value = java_lang_String::value(java_string);
2521 if (s_value != NULL) {
2522 size_t length = java_lang_String::utf8_length(java_string, s_value);
2523 /* JNI Specification states return NULL on OOM */
2524 result = AllocateHeap(length + 1, mtInternal, 0, AllocFailStrategy::RETURN_NULL);
2525 if (result != NULL) {
2526 java_lang_String::as_utf8_string(java_string, s_value, result, (int) length + 1);
2527 if (isCopy != NULL) {
2528 *isCopy = JNI_TRUE;
2529 }
2530 }
2531 }
2532 HOTSPOT_JNI_GETSTRINGUTFCHARS_RETURN(result);
2533 return result;
2534 JNI_END
2535
2536
2537 JNI_LEAF(void, jni_ReleaseStringUTFChars(JNIEnv *env, jstring str, const char *chars))
2538 JNIWrapper("ReleaseStringUTFChars");
2539 HOTSPOT_JNI_RELEASESTRINGUTFCHARS_ENTRY(env, str, (char *) chars);
2540 if (chars != NULL) {
2541 FreeHeap((char*) chars);
2542 }
2543 HOTSPOT_JNI_RELEASESTRINGUTFCHARS_RETURN();
2544 JNI_END
2545
2546
2547 JNI_ENTRY_NO_PRESERVE(jsize, jni_GetArrayLength(JNIEnv *env, jarray array))
2548 JNIWrapper("GetArrayLength");
2549 HOTSPOT_JNI_GETARRAYLENGTH_ENTRY(env, array);
2550 arrayOop a = arrayOop(JNIHandles::resolve_non_null(array));
2551 assert(a->is_array(), "must be array");
2552 jsize ret = a->length();
2553 HOTSPOT_JNI_GETARRAYLENGTH_RETURN(ret);
2554 return ret;
2555 JNI_END
2556
2557
2558 //
2559 // Object Array Operations
2560 //
2561
2562 DT_RETURN_MARK_DECL(NewObjectArray, jobjectArray
2563 , HOTSPOT_JNI_NEWOBJECTARRAY_RETURN(_ret_ref));
2564
2565 JNI_ENTRY(jobjectArray, jni_NewObjectArray(JNIEnv *env, jsize length, jclass elementClass, jobject initialElement))
2566 JNIWrapper("NewObjectArray");
2567 HOTSPOT_JNI_NEWOBJECTARRAY_ENTRY(env, length, elementClass, initialElement);
2568 jobjectArray ret = NULL;
2569 DT_RETURN_MARK(NewObjectArray, jobjectArray, (const jobjectArray&)ret);
2570 Klass* ek = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(elementClass));
2571 Klass* ak = ek->array_klass(CHECK_NULL);
2572 ObjArrayKlass::cast(ak)->initialize(CHECK_NULL);
2573 objArrayOop result = ObjArrayKlass::cast(ak)->allocate(length, CHECK_NULL);
2574 oop initial_value = JNIHandles::resolve(initialElement);
2575 if (initial_value != NULL) { // array already initialized with NULL
2576 for (int index = 0; index < length; index++) {
2577 result->obj_at_put(index, initial_value);
2578 }
2579 }
2580 ret = (jobjectArray) JNIHandles::make_local(env, result);
2581 return ret;
2582 JNI_END
2583
2584 DT_RETURN_MARK_DECL(GetObjectArrayElement, jobject
2585 , HOTSPOT_JNI_GETOBJECTARRAYELEMENT_RETURN(_ret_ref));
2586
2587 JNI_ENTRY(jobject, jni_GetObjectArrayElement(JNIEnv *env, jobjectArray array, jsize index))
2588 JNIWrapper("GetObjectArrayElement");
2589 HOTSPOT_JNI_GETOBJECTARRAYELEMENT_ENTRY(env, array, index);
2590 jobject ret = NULL;
2591 DT_RETURN_MARK(GetObjectArrayElement, jobject, (const jobject&)ret);
2592 objArrayOop a = objArrayOop(JNIHandles::resolve_non_null(array));
2593 if (a->is_within_bounds(index)) {
2594 ret = JNIHandles::make_local(env, a->obj_at(index));
2595 return ret;
2596 } else {
2597 ResourceMark rm(THREAD);
2598 stringStream ss;
2599 ss.print("Index %d out of bounds for length %d", index, a->length());
2600 THROW_MSG_0(vmSymbols::java_lang_ArrayIndexOutOfBoundsException(), ss.as_string());
2601 }
2602 JNI_END
2603
2604 DT_VOID_RETURN_MARK_DECL(SetObjectArrayElement
2605 , HOTSPOT_JNI_SETOBJECTARRAYELEMENT_RETURN());
2606
2607 JNI_ENTRY(void, jni_SetObjectArrayElement(JNIEnv *env, jobjectArray array, jsize index, jobject value))
2608 JNIWrapper("SetObjectArrayElement");
2609 HOTSPOT_JNI_SETOBJECTARRAYELEMENT_ENTRY(env, array, index, value);
2610 DT_VOID_RETURN_MARK(SetObjectArrayElement);
2611
2612 objArrayOop a = objArrayOop(JNIHandles::resolve_non_null(array));
2613 oop v = JNIHandles::resolve(value);
2614 if (a->is_within_bounds(index)) {
2615 if (v == NULL || v->is_a(ObjArrayKlass::cast(a->klass())->element_klass())) {
2616 a->obj_at_put(index, v);
2617 } else {
2618 ResourceMark rm(THREAD);
2619 stringStream ss;
2620 Klass *bottom_kl = ObjArrayKlass::cast(a->klass())->bottom_klass();
2621 ss.print("type mismatch: can not store %s to %s[%d]",
2622 v->klass()->external_name(),
2623 bottom_kl->is_typeArray_klass() ? type2name_tab[ArrayKlass::cast(bottom_kl)->element_type()] : bottom_kl->external_name(),
2624 index);
2625 for (int dims = ArrayKlass::cast(a->klass())->dimension(); dims > 1; --dims) {
2626 ss.print("[]");
2627 }
2628 THROW_MSG(vmSymbols::java_lang_ArrayStoreException(), ss.as_string());
2629 }
2630 } else {
2631 ResourceMark rm(THREAD);
2632 stringStream ss;
2633 ss.print("Index %d out of bounds for length %d", index, a->length());
2634 THROW_MSG(vmSymbols::java_lang_ArrayIndexOutOfBoundsException(), ss.as_string());
2635 }
2636 JNI_END
2637
2638
2639
2640 #define DEFINE_NEWSCALARARRAY(Return,Allocator,Result \
2641 ,EntryProbe,ReturnProbe) \
2642 \
2643 DT_RETURN_MARK_DECL(New##Result##Array, Return \
2644 , ReturnProbe); \
2645 \
2646 JNI_ENTRY(Return, \
2647 jni_New##Result##Array(JNIEnv *env, jsize len)) \
2648 JNIWrapper("New" XSTR(Result) "Array"); \
2649 EntryProbe; \
2650 Return ret = NULL;\
2651 DT_RETURN_MARK(New##Result##Array, Return, (const Return&)ret);\
2652 \
2653 oop obj= oopFactory::Allocator(len, CHECK_0); \
2654 ret = (Return) JNIHandles::make_local(env, obj); \
2655 return ret;\
2656 JNI_END
2657
2658 DEFINE_NEWSCALARARRAY(jbooleanArray, new_boolArray, Boolean,
2659 HOTSPOT_JNI_NEWBOOLEANARRAY_ENTRY(env, len),
2660 HOTSPOT_JNI_NEWBOOLEANARRAY_RETURN(_ret_ref))
2661 DEFINE_NEWSCALARARRAY(jbyteArray, new_byteArray, Byte,
2662 HOTSPOT_JNI_NEWBYTEARRAY_ENTRY(env, len),
2663 HOTSPOT_JNI_NEWBYTEARRAY_RETURN(_ret_ref))
2664 DEFINE_NEWSCALARARRAY(jshortArray, new_shortArray, Short,
2665 HOTSPOT_JNI_NEWSHORTARRAY_ENTRY(env, len),
2666 HOTSPOT_JNI_NEWSHORTARRAY_RETURN(_ret_ref))
2667 DEFINE_NEWSCALARARRAY(jcharArray, new_charArray, Char,
2668 HOTSPOT_JNI_NEWCHARARRAY_ENTRY(env, len),
2669 HOTSPOT_JNI_NEWCHARARRAY_RETURN(_ret_ref))
2670 DEFINE_NEWSCALARARRAY(jintArray, new_intArray, Int,
2671 HOTSPOT_JNI_NEWINTARRAY_ENTRY(env, len),
2672 HOTSPOT_JNI_NEWINTARRAY_RETURN(_ret_ref))
2673 DEFINE_NEWSCALARARRAY(jlongArray, new_longArray, Long,
2674 HOTSPOT_JNI_NEWLONGARRAY_ENTRY(env, len),
2675 HOTSPOT_JNI_NEWLONGARRAY_RETURN(_ret_ref))
2676 DEFINE_NEWSCALARARRAY(jfloatArray, new_floatArray, Float,
2677 HOTSPOT_JNI_NEWFLOATARRAY_ENTRY(env, len),
2678 HOTSPOT_JNI_NEWFLOATARRAY_RETURN(_ret_ref))
2679 DEFINE_NEWSCALARARRAY(jdoubleArray, new_doubleArray, Double,
2680 HOTSPOT_JNI_NEWDOUBLEARRAY_ENTRY(env, len),
2681 HOTSPOT_JNI_NEWDOUBLEARRAY_RETURN(_ret_ref))
2682
2683 // Return an address which will fault if the caller writes to it.
2684
2685 static char* get_bad_address() {
2686 static char* bad_address = NULL;
2687 if (bad_address == NULL) {
2688 size_t size = os::vm_allocation_granularity();
2689 bad_address = os::reserve_memory(size);
2690 if (bad_address != NULL) {
2691 os::protect_memory(bad_address, size, os::MEM_PROT_READ,
2692 /*is_committed*/false);
2693 MemTracker::record_virtual_memory_type((void*)bad_address, mtInternal);
2694 }
2695 }
2696 return bad_address;
2697 }
2698
2699
2700
2701 #define DEFINE_GETSCALARARRAYELEMENTS(ElementTag,ElementType,Result, Tag \
2702 , EntryProbe, ReturnProbe) \
2703 \
2704 JNI_ENTRY_NO_PRESERVE(ElementType*, \
2705 jni_Get##Result##ArrayElements(JNIEnv *env, ElementType##Array array, jboolean *isCopy)) \
2706 JNIWrapper("Get" XSTR(Result) "ArrayElements"); \
2707 EntryProbe; \
2708 /* allocate an chunk of memory in c land */ \
2709 typeArrayOop a = typeArrayOop(JNIHandles::resolve_non_null(array)); \
2710 ElementType* result; \
2711 int len = a->length(); \
2712 if (len == 0) { \
2713 if (isCopy != NULL) { \
2714 *isCopy = JNI_FALSE; \
2715 } \
2716 /* Empty array: legal but useless, can't return NULL. \
2717 * Return a pointer to something useless. \
2718 * Avoid asserts in typeArrayOop. */ \
2719 result = (ElementType*)get_bad_address(); \
2720 } else { \
2721 /* JNI Specification states return NULL on OOM */ \
2722 result = NEW_C_HEAP_ARRAY_RETURN_NULL(ElementType, len, mtInternal); \
2723 if (result != NULL) { \
2724 /* copy the array to the c chunk */ \
2725 ArrayAccess<>::arraycopy_to_native(a, typeArrayOopDesc::element_offset<ElementType>(0), \
2726 result, len); \
2727 if (isCopy) { \
2728 *isCopy = JNI_TRUE; \
2729 } \
2730 } \
2731 } \
2732 ReturnProbe; \
2733 return result; \
2734 JNI_END
2735
2736 DEFINE_GETSCALARARRAYELEMENTS(T_BOOLEAN, jboolean, Boolean, bool
2737 , HOTSPOT_JNI_GETBOOLEANARRAYELEMENTS_ENTRY(env, array, (uintptr_t *) isCopy),
2738 HOTSPOT_JNI_GETBOOLEANARRAYELEMENTS_RETURN((uintptr_t*)result))
2739 DEFINE_GETSCALARARRAYELEMENTS(T_BYTE, jbyte, Byte, byte
2740 , HOTSPOT_JNI_GETBYTEARRAYELEMENTS_ENTRY(env, array, (uintptr_t *) isCopy),
2741 HOTSPOT_JNI_GETBYTEARRAYELEMENTS_RETURN((char*)result))
2742 DEFINE_GETSCALARARRAYELEMENTS(T_SHORT, jshort, Short, short
2743 , HOTSPOT_JNI_GETSHORTARRAYELEMENTS_ENTRY(env, (uint16_t*) array, (uintptr_t *) isCopy),
2744 HOTSPOT_JNI_GETSHORTARRAYELEMENTS_RETURN((uint16_t*)result))
2745 DEFINE_GETSCALARARRAYELEMENTS(T_CHAR, jchar, Char, char
2746 , HOTSPOT_JNI_GETCHARARRAYELEMENTS_ENTRY(env, (uint16_t*) array, (uintptr_t *) isCopy),
2747 HOTSPOT_JNI_GETCHARARRAYELEMENTS_RETURN(result))
2748 DEFINE_GETSCALARARRAYELEMENTS(T_INT, jint, Int, int
2749 , HOTSPOT_JNI_GETINTARRAYELEMENTS_ENTRY(env, array, (uintptr_t *) isCopy),
2750 HOTSPOT_JNI_GETINTARRAYELEMENTS_RETURN((uint32_t*)result))
2751 DEFINE_GETSCALARARRAYELEMENTS(T_LONG, jlong, Long, long
2752 , HOTSPOT_JNI_GETLONGARRAYELEMENTS_ENTRY(env, array, (uintptr_t *) isCopy),
2753 HOTSPOT_JNI_GETLONGARRAYELEMENTS_RETURN(((uintptr_t*)result)))
2754 // Float and double probes don't return value because dtrace doesn't currently support it
2755 DEFINE_GETSCALARARRAYELEMENTS(T_FLOAT, jfloat, Float, float
2756 , HOTSPOT_JNI_GETFLOATARRAYELEMENTS_ENTRY(env, array, (uintptr_t *) isCopy),
2757 HOTSPOT_JNI_GETFLOATARRAYELEMENTS_RETURN(result))
2758 DEFINE_GETSCALARARRAYELEMENTS(T_DOUBLE, jdouble, Double, double
2759 , HOTSPOT_JNI_GETDOUBLEARRAYELEMENTS_ENTRY(env, array, (uintptr_t *) isCopy),
2760 HOTSPOT_JNI_GETDOUBLEARRAYELEMENTS_RETURN(result))
2761
2762
2763 #define DEFINE_RELEASESCALARARRAYELEMENTS(ElementTag,ElementType,Result,Tag \
2764 , EntryProbe, ReturnProbe);\
2765 \
2766 JNI_ENTRY_NO_PRESERVE(void, \
2767 jni_Release##Result##ArrayElements(JNIEnv *env, ElementType##Array array, \
2768 ElementType *buf, jint mode)) \
2769 JNIWrapper("Release" XSTR(Result) "ArrayElements"); \
2770 EntryProbe; \
2771 typeArrayOop a = typeArrayOop(JNIHandles::resolve_non_null(array)); \
2772 int len = a->length(); \
2773 if (len != 0) { /* Empty array: nothing to free or copy. */ \
2774 if ((mode == 0) || (mode == JNI_COMMIT)) { \
2775 ArrayAccess<>::arraycopy_from_native(buf, a, typeArrayOopDesc::element_offset<ElementType>(0), len); \
2776 } \
2777 if ((mode == 0) || (mode == JNI_ABORT)) { \
2778 FreeHeap(buf); \
2779 } \
2780 } \
2781 ReturnProbe; \
2782 JNI_END
2783
2784 DEFINE_RELEASESCALARARRAYELEMENTS(T_BOOLEAN, jboolean, Boolean, bool
2785 , HOTSPOT_JNI_RELEASEBOOLEANARRAYELEMENTS_ENTRY(env, array, (uintptr_t *) buf, mode),
2786 HOTSPOT_JNI_RELEASEBOOLEANARRAYELEMENTS_RETURN())
2787 DEFINE_RELEASESCALARARRAYELEMENTS(T_BYTE, jbyte, Byte, byte
2788 , HOTSPOT_JNI_RELEASEBYTEARRAYELEMENTS_ENTRY(env, array, (char *) buf, mode),
2789 HOTSPOT_JNI_RELEASEBYTEARRAYELEMENTS_RETURN())
2790 DEFINE_RELEASESCALARARRAYELEMENTS(T_SHORT, jshort, Short, short
2791 , HOTSPOT_JNI_RELEASESHORTARRAYELEMENTS_ENTRY(env, array, (uint16_t *) buf, mode),
2792 HOTSPOT_JNI_RELEASESHORTARRAYELEMENTS_RETURN())
2793 DEFINE_RELEASESCALARARRAYELEMENTS(T_CHAR, jchar, Char, char
2794 , HOTSPOT_JNI_RELEASECHARARRAYELEMENTS_ENTRY(env, array, (uint16_t *) buf, mode),
2795 HOTSPOT_JNI_RELEASECHARARRAYELEMENTS_RETURN())
2796 DEFINE_RELEASESCALARARRAYELEMENTS(T_INT, jint, Int, int
2797 , HOTSPOT_JNI_RELEASEINTARRAYELEMENTS_ENTRY(env, array, (uint32_t *) buf, mode),
2798 HOTSPOT_JNI_RELEASEINTARRAYELEMENTS_RETURN())
2799 DEFINE_RELEASESCALARARRAYELEMENTS(T_LONG, jlong, Long, long
2800 , HOTSPOT_JNI_RELEASELONGARRAYELEMENTS_ENTRY(env, array, (uintptr_t *) buf, mode),
2801 HOTSPOT_JNI_RELEASELONGARRAYELEMENTS_RETURN())
2802 DEFINE_RELEASESCALARARRAYELEMENTS(T_FLOAT, jfloat, Float, float
2803 , HOTSPOT_JNI_RELEASEFLOATARRAYELEMENTS_ENTRY(env, array, (float *) buf, mode),
2804 HOTSPOT_JNI_RELEASEFLOATARRAYELEMENTS_RETURN())
2805 DEFINE_RELEASESCALARARRAYELEMENTS(T_DOUBLE, jdouble, Double, double
2806 , HOTSPOT_JNI_RELEASEDOUBLEARRAYELEMENTS_ENTRY(env, array, (double *) buf, mode),
2807 HOTSPOT_JNI_RELEASEDOUBLEARRAYELEMENTS_RETURN())
2808
2809 static void check_bounds(jsize start, jsize copy_len, jsize array_len, TRAPS) {
2810 ResourceMark rm(THREAD);
2811 if (copy_len < 0) {
2812 stringStream ss;
2813 ss.print("Length %d is negative", copy_len);
2814 THROW_MSG(vmSymbols::java_lang_ArrayIndexOutOfBoundsException(), ss.as_string());
2815 } else if (start < 0 || (start > array_len - copy_len)) {
2816 stringStream ss;
2817 ss.print("Array region %d.." INT64_FORMAT " out of bounds for length %d",
2818 start, (int64_t)start+(int64_t)copy_len, array_len);
2819 THROW_MSG(vmSymbols::java_lang_ArrayIndexOutOfBoundsException(), ss.as_string());
2820 }
2821 }
2822
2823 #define DEFINE_GETSCALARARRAYREGION(ElementTag,ElementType,Result, Tag \
2824 , EntryProbe, ReturnProbe); \
2825 DT_VOID_RETURN_MARK_DECL(Get##Result##ArrayRegion \
2826 , ReturnProbe); \
2827 \
2828 JNI_ENTRY(void, \
2829 jni_Get##Result##ArrayRegion(JNIEnv *env, ElementType##Array array, jsize start, \
2830 jsize len, ElementType *buf)) \
2831 JNIWrapper("Get" XSTR(Result) "ArrayRegion"); \
2832 EntryProbe; \
2833 DT_VOID_RETURN_MARK(Get##Result##ArrayRegion); \
2834 typeArrayOop src = typeArrayOop(JNIHandles::resolve_non_null(array)); \
2835 check_bounds(start, len, src->length(), CHECK); \
2836 if (len > 0) { \
2837 ArrayAccess<>::arraycopy_to_native(src, typeArrayOopDesc::element_offset<ElementType>(start), buf, len); \
2838 } \
2839 JNI_END
2840
2841 DEFINE_GETSCALARARRAYREGION(T_BOOLEAN, jboolean,Boolean, bool
2842 , HOTSPOT_JNI_GETBOOLEANARRAYREGION_ENTRY(env, array, start, len, (uintptr_t *) buf),
2843 HOTSPOT_JNI_GETBOOLEANARRAYREGION_RETURN());
2844 DEFINE_GETSCALARARRAYREGION(T_BYTE, jbyte, Byte, byte
2845 , HOTSPOT_JNI_GETBYTEARRAYREGION_ENTRY(env, array, start, len, (char *) buf),
2846 HOTSPOT_JNI_GETBYTEARRAYREGION_RETURN());
2847 DEFINE_GETSCALARARRAYREGION(T_SHORT, jshort, Short, short
2848 , HOTSPOT_JNI_GETSHORTARRAYREGION_ENTRY(env, array, start, len, (uint16_t *) buf),
2849 HOTSPOT_JNI_GETSHORTARRAYREGION_RETURN());
2850 DEFINE_GETSCALARARRAYREGION(T_CHAR, jchar, Char, char
2851 , HOTSPOT_JNI_GETCHARARRAYREGION_ENTRY(env, array, start, len, (uint16_t*) buf),
2852 HOTSPOT_JNI_GETCHARARRAYREGION_RETURN());
2853 DEFINE_GETSCALARARRAYREGION(T_INT, jint, Int, int
2854 , HOTSPOT_JNI_GETINTARRAYREGION_ENTRY(env, array, start, len, (uint32_t*) buf),
2855 HOTSPOT_JNI_GETINTARRAYREGION_RETURN());
2856 DEFINE_GETSCALARARRAYREGION(T_LONG, jlong, Long, long
2857 , HOTSPOT_JNI_GETLONGARRAYREGION_ENTRY(env, array, start, len, (uintptr_t *) buf),
2858 HOTSPOT_JNI_GETLONGARRAYREGION_RETURN());
2859 DEFINE_GETSCALARARRAYREGION(T_FLOAT, jfloat, Float, float
2860 , HOTSPOT_JNI_GETFLOATARRAYREGION_ENTRY(env, array, start, len, (float *) buf),
2861 HOTSPOT_JNI_GETFLOATARRAYREGION_RETURN());
2862 DEFINE_GETSCALARARRAYREGION(T_DOUBLE, jdouble, Double, double
2863 , HOTSPOT_JNI_GETDOUBLEARRAYREGION_ENTRY(env, array, start, len, (double *) buf),
2864 HOTSPOT_JNI_GETDOUBLEARRAYREGION_RETURN());
2865
2866
2867 #define DEFINE_SETSCALARARRAYREGION(ElementTag,ElementType,Result, Tag \
2868 , EntryProbe, ReturnProbe); \
2869 DT_VOID_RETURN_MARK_DECL(Set##Result##ArrayRegion \
2870 ,ReturnProbe); \
2871 \
2872 JNI_ENTRY(void, \
2873 jni_Set##Result##ArrayRegion(JNIEnv *env, ElementType##Array array, jsize start, \
2874 jsize len, const ElementType *buf)) \
2875 JNIWrapper("Set" XSTR(Result) "ArrayRegion"); \
2876 EntryProbe; \
2877 DT_VOID_RETURN_MARK(Set##Result##ArrayRegion); \
2878 typeArrayOop dst = typeArrayOop(JNIHandles::resolve_non_null(array)); \
2879 check_bounds(start, len, dst->length(), CHECK); \
2880 if (len > 0) { \
2881 ArrayAccess<>::arraycopy_from_native(buf, dst, typeArrayOopDesc::element_offset<ElementType>(start), len); \
2882 } \
2883 JNI_END
2884
2885 DEFINE_SETSCALARARRAYREGION(T_BOOLEAN, jboolean, Boolean, bool
2886 , HOTSPOT_JNI_SETBOOLEANARRAYREGION_ENTRY(env, array, start, len, (uintptr_t *)buf),
2887 HOTSPOT_JNI_SETBOOLEANARRAYREGION_RETURN())
2888 DEFINE_SETSCALARARRAYREGION(T_BYTE, jbyte, Byte, byte
2889 , HOTSPOT_JNI_SETBYTEARRAYREGION_ENTRY(env, array, start, len, (char *) buf),
2890 HOTSPOT_JNI_SETBYTEARRAYREGION_RETURN())
2891 DEFINE_SETSCALARARRAYREGION(T_SHORT, jshort, Short, short
2892 , HOTSPOT_JNI_SETSHORTARRAYREGION_ENTRY(env, array, start, len, (uint16_t *) buf),
2893 HOTSPOT_JNI_SETSHORTARRAYREGION_RETURN())
2894 DEFINE_SETSCALARARRAYREGION(T_CHAR, jchar, Char, char
2895 , HOTSPOT_JNI_SETCHARARRAYREGION_ENTRY(env, array, start, len, (uint16_t *) buf),
2896 HOTSPOT_JNI_SETCHARARRAYREGION_RETURN())
2897 DEFINE_SETSCALARARRAYREGION(T_INT, jint, Int, int
2898 , HOTSPOT_JNI_SETINTARRAYREGION_ENTRY(env, array, start, len, (uint32_t *) buf),
2899 HOTSPOT_JNI_SETINTARRAYREGION_RETURN())
2900 DEFINE_SETSCALARARRAYREGION(T_LONG, jlong, Long, long
2901 , HOTSPOT_JNI_SETLONGARRAYREGION_ENTRY(env, array, start, len, (uintptr_t *) buf),
2902 HOTSPOT_JNI_SETLONGARRAYREGION_RETURN())
2903 DEFINE_SETSCALARARRAYREGION(T_FLOAT, jfloat, Float, float
2904 , HOTSPOT_JNI_SETFLOATARRAYREGION_ENTRY(env, array, start, len, (float *) buf),
2905 HOTSPOT_JNI_SETFLOATARRAYREGION_RETURN())
2906 DEFINE_SETSCALARARRAYREGION(T_DOUBLE, jdouble, Double, double
2907 , HOTSPOT_JNI_SETDOUBLEARRAYREGION_ENTRY(env, array, start, len, (double *) buf),
2908 HOTSPOT_JNI_SETDOUBLEARRAYREGION_RETURN())
2909
2910
2911 DT_RETURN_MARK_DECL(RegisterNatives, jint
2912 , HOTSPOT_JNI_REGISTERNATIVES_RETURN(_ret_ref));
2913
2914 JNI_ENTRY(jint, jni_RegisterNatives(JNIEnv *env, jclass clazz,
2915 const JNINativeMethod *methods,
2916 jint nMethods))
2917 JNIWrapper("RegisterNatives");
2918 HOTSPOT_JNI_REGISTERNATIVES_ENTRY(env, clazz, (void *) methods, nMethods);
2919 jint ret = 0;
2920 DT_RETURN_MARK(RegisterNatives, jint, (const jint&)ret);
2921
2922 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz));
2923
2924 for (int index = 0; index < nMethods; index++) {
2925 const char* meth_name = methods[index].name;
2926 const char* meth_sig = methods[index].signature;
2927 int meth_name_len = (int)strlen(meth_name);
2928
2929 // The class should have been loaded (we have an instance of the class
2930 // passed in) so the method and signature should already be in the symbol
2931 // table. If they're not there, the method doesn't exist.
2932 TempNewSymbol name = SymbolTable::probe(meth_name, meth_name_len);
2933 TempNewSymbol signature = SymbolTable::probe(meth_sig, (int)strlen(meth_sig));
2934
2935 if (name == NULL || signature == NULL) {
2936 ResourceMark rm;
2937 stringStream st;
2938 st.print("Method %s.%s%s not found", k->external_name(), meth_name, meth_sig);
2939 // Must return negative value on failure
2940 THROW_MSG_(vmSymbols::java_lang_NoSuchMethodError(), st.as_string(), -1);
2941 }
2942
2943 bool res = Method::register_native(k, name, signature,
2944 (address) methods[index].fnPtr, THREAD);
2945 if (!res) {
2946 ret = -1;
2947 break;
2948 }
2949 }
2950 return ret;
2951 JNI_END
2952
2953
2954 JNI_ENTRY(jint, jni_UnregisterNatives(JNIEnv *env, jclass clazz))
2955 JNIWrapper("UnregisterNatives");
2956 HOTSPOT_JNI_UNREGISTERNATIVES_ENTRY(env, clazz);
2957 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz));
2958 //%note jni_2
2959 if (k->is_instance_klass()) {
2960 for (int index = 0; index < InstanceKlass::cast(k)->methods()->length(); index++) {
2961 Method* m = InstanceKlass::cast(k)->methods()->at(index);
2962 if (m->is_native()) {
2963 m->clear_native_function();
2964 m->set_signature_handler(NULL);
2965 }
2966 }
2967 }
2968 HOTSPOT_JNI_UNREGISTERNATIVES_RETURN(0);
2969 return 0;
2970 JNI_END
2971
2972 //
2973 // Monitor functions
2974 //
2975
2976 DT_RETURN_MARK_DECL(MonitorEnter, jint
2977 , HOTSPOT_JNI_MONITORENTER_RETURN(_ret_ref));
2978
2979 JNI_ENTRY(jint, jni_MonitorEnter(JNIEnv *env, jobject jobj))
2980 HOTSPOT_JNI_MONITORENTER_ENTRY(env, jobj);
2981 jint ret = JNI_ERR;
2982 DT_RETURN_MARK(MonitorEnter, jint, (const jint&)ret);
2983
2984 // If the object is null, we can't do anything with it
2985 if (jobj == NULL) {
2986 THROW_(vmSymbols::java_lang_NullPointerException(), JNI_ERR);
2987 }
2988
2989 Handle obj(thread, JNIHandles::resolve_non_null(jobj));
2990 ObjectSynchronizer::jni_enter(obj, CHECK_(JNI_ERR));
2991 ret = JNI_OK;
2992 return ret;
2993 JNI_END
2994
2995 DT_RETURN_MARK_DECL(MonitorExit, jint
2996 , HOTSPOT_JNI_MONITOREXIT_RETURN(_ret_ref));
2997
2998 JNI_ENTRY(jint, jni_MonitorExit(JNIEnv *env, jobject jobj))
2999 HOTSPOT_JNI_MONITOREXIT_ENTRY(env, jobj);
3000 jint ret = JNI_ERR;
3001 DT_RETURN_MARK(MonitorExit, jint, (const jint&)ret);
3002
3003 // Don't do anything with a null object
3004 if (jobj == NULL) {
3005 THROW_(vmSymbols::java_lang_NullPointerException(), JNI_ERR);
3006 }
3007
3008 Handle obj(THREAD, JNIHandles::resolve_non_null(jobj));
3009 ObjectSynchronizer::jni_exit(obj(), CHECK_(JNI_ERR));
3010
3011 ret = JNI_OK;
3012 return ret;
3013 JNI_END
3014
3015 //
3016 // Extensions
3017 //
3018
3019 DT_VOID_RETURN_MARK_DECL(GetStringRegion
3020 , HOTSPOT_JNI_GETSTRINGREGION_RETURN());
3021
3022 JNI_ENTRY(void, jni_GetStringRegion(JNIEnv *env, jstring string, jsize start, jsize len, jchar *buf))
3023 JNIWrapper("GetStringRegion");
3024 HOTSPOT_JNI_GETSTRINGREGION_ENTRY(env, string, start, len, buf);
3025 DT_VOID_RETURN_MARK(GetStringRegion);
3026 oop s = JNIHandles::resolve_non_null(string);
3027 typeArrayOop s_value = java_lang_String::value(s);
3028 int s_len = java_lang_String::length(s, s_value);
3029 if (start < 0 || len < 0 || start > s_len - len) {
3030 THROW(vmSymbols::java_lang_StringIndexOutOfBoundsException());
3031 } else {
3032 if (len > 0) {
3033 bool is_latin1 = java_lang_String::is_latin1(s);
3034 if (!is_latin1) {
3035 ArrayAccess<>::arraycopy_to_native(s_value, typeArrayOopDesc::element_offset<jchar>(start),
3036 buf, len);
3037 } else {
3038 for (int i = 0; i < len; i++) {
3039 buf[i] = ((jchar) s_value->byte_at(i + start)) & 0xff;
3040 }
3041 }
3042 }
3043 }
3044 JNI_END
3045
3046 DT_VOID_RETURN_MARK_DECL(GetStringUTFRegion
3047 , HOTSPOT_JNI_GETSTRINGUTFREGION_RETURN());
3048
3049 JNI_ENTRY(void, jni_GetStringUTFRegion(JNIEnv *env, jstring string, jsize start, jsize len, char *buf))
3050 JNIWrapper("GetStringUTFRegion");
3051 HOTSPOT_JNI_GETSTRINGUTFREGION_ENTRY(env, string, start, len, buf);
3052 DT_VOID_RETURN_MARK(GetStringUTFRegion);
3053 oop s = JNIHandles::resolve_non_null(string);
3054 typeArrayOop s_value = java_lang_String::value(s);
3055 int s_len = java_lang_String::length(s, s_value);
3056 if (start < 0 || len < 0 || start > s_len - len) {
3057 THROW(vmSymbols::java_lang_StringIndexOutOfBoundsException());
3058 } else {
3059 //%note jni_7
3060 if (len > 0) {
3061 // Assume the buffer is large enough as the JNI spec. does not require user error checking
3062 java_lang_String::as_utf8_string(s, s_value, start, len, buf, INT_MAX);
3063 // as_utf8_string null-terminates the result string
3064 } else {
3065 // JDK null-terminates the buffer even in len is zero
3066 if (buf != NULL) {
3067 buf[0] = 0;
3068 }
3069 }
3070 }
3071 JNI_END
3072
3073 static oop lock_gc_or_pin_object(JavaThread* thread, jobject obj) {
3074 if (Universe::heap()->supports_object_pinning()) {
3075 const oop o = JNIHandles::resolve_non_null(obj);
3076 return Universe::heap()->pin_object(thread, o);
3077 } else {
3078 GCLocker::lock_critical(thread);
3079 return JNIHandles::resolve_non_null(obj);
3080 }
3081 }
3082
3083 static void unlock_gc_or_unpin_object(JavaThread* thread, jobject obj) {
3084 if (Universe::heap()->supports_object_pinning()) {
3085 const oop o = JNIHandles::resolve_non_null(obj);
3086 return Universe::heap()->unpin_object(thread, o);
3087 } else {
3088 GCLocker::unlock_critical(thread);
3089 }
3090 }
3091
3092 JNI_ENTRY(void*, jni_GetPrimitiveArrayCritical(JNIEnv *env, jarray array, jboolean *isCopy))
3093 JNIWrapper("GetPrimitiveArrayCritical");
3094 HOTSPOT_JNI_GETPRIMITIVEARRAYCRITICAL_ENTRY(env, array, (uintptr_t *) isCopy);
3095 if (isCopy != NULL) {
3096 *isCopy = JNI_FALSE;
3097 }
3098 oop a = lock_gc_or_pin_object(thread, array);
3099 assert(a->is_array(), "just checking");
3100 BasicType type;
3101 if (a->is_objArray()) {
3102 type = T_OBJECT;
3103 } else {
3104 type = TypeArrayKlass::cast(a->klass())->element_type();
3105 }
3106 void* ret = arrayOop(a)->base(type);
3107 HOTSPOT_JNI_GETPRIMITIVEARRAYCRITICAL_RETURN(ret);
3108 return ret;
3109 JNI_END
3110
3111
3112 JNI_ENTRY(void, jni_ReleasePrimitiveArrayCritical(JNIEnv *env, jarray array, void *carray, jint mode))
3113 JNIWrapper("ReleasePrimitiveArrayCritical");
3114 HOTSPOT_JNI_RELEASEPRIMITIVEARRAYCRITICAL_ENTRY(env, array, carray, mode);
3115 unlock_gc_or_unpin_object(thread, array);
3116 HOTSPOT_JNI_RELEASEPRIMITIVEARRAYCRITICAL_RETURN();
3117 JNI_END
3118
3119
3120 JNI_ENTRY(const jchar*, jni_GetStringCritical(JNIEnv *env, jstring string, jboolean *isCopy))
3121 JNIWrapper("GetStringCritical");
3122 HOTSPOT_JNI_GETSTRINGCRITICAL_ENTRY(env, string, (uintptr_t *) isCopy);
3123 oop s = lock_gc_or_pin_object(thread, string);
3124 typeArrayOop s_value = java_lang_String::value(s);
3125 bool is_latin1 = java_lang_String::is_latin1(s);
3126 if (isCopy != NULL) {
3127 *isCopy = is_latin1 ? JNI_TRUE : JNI_FALSE;
3128 }
3129 jchar* ret;
3130 if (!is_latin1) {
3131 ret = (jchar*) s_value->base(T_CHAR);
3132 } else {
3133 // Inflate latin1 encoded string to UTF16
3134 int s_len = java_lang_String::length(s, s_value);
3135 ret = NEW_C_HEAP_ARRAY_RETURN_NULL(jchar, s_len + 1, mtInternal); // add one for zero termination
3136 /* JNI Specification states return NULL on OOM */
3137 if (ret != NULL) {
3138 for (int i = 0; i < s_len; i++) {
3139 ret[i] = ((jchar) s_value->byte_at(i)) & 0xff;
3140 }
3141 ret[s_len] = 0;
3142 }
3143 }
3144 HOTSPOT_JNI_GETSTRINGCRITICAL_RETURN((uint16_t *) ret);
3145 return ret;
3146 JNI_END
3147
3148
3149 JNI_ENTRY(void, jni_ReleaseStringCritical(JNIEnv *env, jstring str, const jchar *chars))
3150 JNIWrapper("ReleaseStringCritical");
3151 HOTSPOT_JNI_RELEASESTRINGCRITICAL_ENTRY(env, str, (uint16_t *) chars);
3152 // The str and chars arguments are ignored for UTF16 strings
3153 oop s = JNIHandles::resolve_non_null(str);
3154 bool is_latin1 = java_lang_String::is_latin1(s);
3155 if (is_latin1) {
3156 // For latin1 string, free jchar array allocated by earlier call to GetStringCritical.
3157 // This assumes that ReleaseStringCritical bookends GetStringCritical.
3158 FREE_C_HEAP_ARRAY(jchar, chars);
3159 }
3160 unlock_gc_or_unpin_object(thread, str);
3161 HOTSPOT_JNI_RELEASESTRINGCRITICAL_RETURN();
3162 JNI_END
3163
3164
3165 JNI_ENTRY(jweak, jni_NewWeakGlobalRef(JNIEnv *env, jobject ref))
3166 JNIWrapper("jni_NewWeakGlobalRef");
3167 HOTSPOT_JNI_NEWWEAKGLOBALREF_ENTRY(env, ref);
3168 Handle ref_handle(thread, JNIHandles::resolve(ref));
3169 jweak ret = JNIHandles::make_weak_global(ref_handle);
3170 HOTSPOT_JNI_NEWWEAKGLOBALREF_RETURN(ret);
3171 return ret;
3172 JNI_END
3173
3174 // Must be JNI_ENTRY (with HandleMark)
3175 JNI_ENTRY(void, jni_DeleteWeakGlobalRef(JNIEnv *env, jweak ref))
3176 JNIWrapper("jni_DeleteWeakGlobalRef");
3177 HOTSPOT_JNI_DELETEWEAKGLOBALREF_ENTRY(env, ref);
3178 JNIHandles::destroy_weak_global(ref);
3179 HOTSPOT_JNI_DELETEWEAKGLOBALREF_RETURN();
3180 JNI_END
3181
3182
3183 JNI_ENTRY_NO_PRESERVE(jboolean, jni_ExceptionCheck(JNIEnv *env))
3184 JNIWrapper("jni_ExceptionCheck");
3185 HOTSPOT_JNI_EXCEPTIONCHECK_ENTRY(env);
3186 jni_check_async_exceptions(thread);
3187 jboolean ret = (thread->has_pending_exception()) ? JNI_TRUE : JNI_FALSE;
3188 HOTSPOT_JNI_EXCEPTIONCHECK_RETURN(ret);
3189 return ret;
3190 JNI_END
3191
3192
3193 // Initialization state for three routines below relating to
3194 // java.nio.DirectBuffers
3195 static int directBufferSupportInitializeStarted = 0;
3196 static volatile int directBufferSupportInitializeEnded = 0;
3197 static volatile int directBufferSupportInitializeFailed = 0;
3198 static jclass bufferClass = NULL;
3199 static jclass directBufferClass = NULL;
3200 static jclass directByteBufferClass = NULL;
3201 static jmethodID directByteBufferConstructor = NULL;
3202 static jfieldID directBufferAddressField = NULL;
3203 static jfieldID bufferCapacityField = NULL;
3204
3205 static jclass lookupOne(JNIEnv* env, const char* name, TRAPS) {
3206 Handle loader; // null (bootstrap) loader
3207 Handle protection_domain; // null protection domain
3208
3209 TempNewSymbol sym = SymbolTable::new_symbol(name);
3210 jclass result = find_class_from_class_loader(env, sym, true, loader, protection_domain, true, CHECK_NULL);
3211
3212 if (log_is_enabled(Debug, class, resolve) && result != NULL) {
3213 trace_class_resolution(java_lang_Class::as_Klass(JNIHandles::resolve_non_null(result)));
3214 }
3215 return result;
3216 }
3217
3218 // These lookups are done with the NULL (bootstrap) ClassLoader to
3219 // circumvent any security checks that would be done by jni_FindClass.
3220 JNI_ENTRY(bool, lookupDirectBufferClasses(JNIEnv* env))
3221 {
3222 if ((bufferClass = lookupOne(env, "java/nio/Buffer", thread)) == NULL) { return false; }
3223 if ((directBufferClass = lookupOne(env, "sun/nio/ch/DirectBuffer", thread)) == NULL) { return false; }
3224 if ((directByteBufferClass = lookupOne(env, "java/nio/DirectByteBuffer", thread)) == NULL) { return false; }
3225 return true;
3226 }
3227 JNI_END
3228
3229
3230 static bool initializeDirectBufferSupport(JNIEnv* env, JavaThread* thread) {
3231 if (directBufferSupportInitializeFailed) {
3232 return false;
3233 }
3234
3235 if (Atomic::cmpxchg(&directBufferSupportInitializeStarted, 0, 1) == 0) {
3236 if (!lookupDirectBufferClasses(env)) {
3237 directBufferSupportInitializeFailed = 1;
3238 return false;
3239 }
3240
3241 // Make global references for these
3242 bufferClass = (jclass) env->NewGlobalRef(bufferClass);
3243 directBufferClass = (jclass) env->NewGlobalRef(directBufferClass);
3244 directByteBufferClass = (jclass) env->NewGlobalRef(directByteBufferClass);
3245
3246 // Get needed field and method IDs
3247 directByteBufferConstructor = env->GetMethodID(directByteBufferClass, "<init>", "(JI)V");
3248 if (env->ExceptionCheck()) {
3249 env->ExceptionClear();
3250 directBufferSupportInitializeFailed = 1;
3251 return false;
3252 }
3253 directBufferAddressField = env->GetFieldID(bufferClass, "address", "J");
3254 if (env->ExceptionCheck()) {
3255 env->ExceptionClear();
3256 directBufferSupportInitializeFailed = 1;
3257 return false;
3258 }
3259 bufferCapacityField = env->GetFieldID(bufferClass, "capacity", "I");
3260 if (env->ExceptionCheck()) {
3261 env->ExceptionClear();
3262 directBufferSupportInitializeFailed = 1;
3263 return false;
3264 }
3265
3266 if ((directByteBufferConstructor == NULL) ||
3267 (directBufferAddressField == NULL) ||
3268 (bufferCapacityField == NULL)) {
3269 directBufferSupportInitializeFailed = 1;
3270 return false;
3271 }
3272
3273 directBufferSupportInitializeEnded = 1;
3274 } else {
3275 while (!directBufferSupportInitializeEnded && !directBufferSupportInitializeFailed) {
3276 os::naked_yield();
3277 }
3278 }
3279
3280 return !directBufferSupportInitializeFailed;
3281 }
3282
3283 extern "C" jobject JNICALL jni_NewDirectByteBuffer(JNIEnv *env, void* address, jlong capacity)
3284 {
3285 // thread_from_jni_environment() will block if VM is gone.
3286 JavaThread* thread = JavaThread::thread_from_jni_environment(env);
3287
3288 JNIWrapper("jni_NewDirectByteBuffer");
3289 HOTSPOT_JNI_NEWDIRECTBYTEBUFFER_ENTRY(env, address, capacity);
3290
3291 if (!directBufferSupportInitializeEnded) {
3292 if (!initializeDirectBufferSupport(env, thread)) {
3293 HOTSPOT_JNI_NEWDIRECTBYTEBUFFER_RETURN(NULL);
3294 return NULL;
3295 }
3296 }
3297
3298 // Being paranoid about accidental sign extension on address
3299 jlong addr = (jlong) ((uintptr_t) address);
3300 // NOTE that package-private DirectByteBuffer constructor currently
3301 // takes int capacity
3302 jint cap = (jint) capacity;
3303 jobject ret = env->NewObject(directByteBufferClass, directByteBufferConstructor, addr, cap);
3304 HOTSPOT_JNI_NEWDIRECTBYTEBUFFER_RETURN(ret);
3305 return ret;
3306 }
3307
3308 DT_RETURN_MARK_DECL(GetDirectBufferAddress, void*
3309 , HOTSPOT_JNI_GETDIRECTBUFFERADDRESS_RETURN((void*) _ret_ref));
3310
3311 extern "C" void* JNICALL jni_GetDirectBufferAddress(JNIEnv *env, jobject buf)
3312 {
3313 // thread_from_jni_environment() will block if VM is gone.
3314 JavaThread* thread = JavaThread::thread_from_jni_environment(env);
3315
3316 JNIWrapper("jni_GetDirectBufferAddress");
3317 HOTSPOT_JNI_GETDIRECTBUFFERADDRESS_ENTRY(env, buf);
3318 void* ret = NULL;
3319 DT_RETURN_MARK(GetDirectBufferAddress, void*, (const void*&)ret);
3320
3321 if (!directBufferSupportInitializeEnded) {
3322 if (!initializeDirectBufferSupport(env, thread)) {
3323 return 0;
3324 }
3325 }
3326
3327 if ((buf != NULL) && (!env->IsInstanceOf(buf, directBufferClass))) {
3328 return 0;
3329 }
3330
3331 ret = (void*)(intptr_t)env->GetLongField(buf, directBufferAddressField);
3332 return ret;
3333 }
3334
3335 DT_RETURN_MARK_DECL(GetDirectBufferCapacity, jlong
3336 , HOTSPOT_JNI_GETDIRECTBUFFERCAPACITY_RETURN(_ret_ref));
3337
3338 extern "C" jlong JNICALL jni_GetDirectBufferCapacity(JNIEnv *env, jobject buf)
3339 {
3340 // thread_from_jni_environment() will block if VM is gone.
3341 JavaThread* thread = JavaThread::thread_from_jni_environment(env);
3342
3343 JNIWrapper("jni_GetDirectBufferCapacity");
3344 HOTSPOT_JNI_GETDIRECTBUFFERCAPACITY_ENTRY(env, buf);
3345 jlong ret = -1;
3346 DT_RETURN_MARK(GetDirectBufferCapacity, jlong, (const jlong&)ret);
3347
3348 if (!directBufferSupportInitializeEnded) {
3349 if (!initializeDirectBufferSupport(env, thread)) {
3350 ret = 0;
3351 return ret;
3352 }
3353 }
3354
3355 if (buf == NULL) {
3356 return -1;
3357 }
3358
3359 if (!env->IsInstanceOf(buf, directBufferClass)) {
3360 return -1;
3361 }
3362
3363 // NOTE that capacity is currently an int in the implementation
3364 ret = env->GetIntField(buf, bufferCapacityField);
3365 return ret;
3366 }
3367
3368
3369 JNI_LEAF(jint, jni_GetVersion(JNIEnv *env))
3370 JNIWrapper("GetVersion");
3371 HOTSPOT_JNI_GETVERSION_ENTRY(env);
3372 HOTSPOT_JNI_GETVERSION_RETURN(CurrentVersion);
3373 return CurrentVersion;
3374 JNI_END
3375
3376 extern struct JavaVM_ main_vm;
3377
3378 JNI_LEAF(jint, jni_GetJavaVM(JNIEnv *env, JavaVM **vm))
3379 JNIWrapper("jni_GetJavaVM");
3380 HOTSPOT_JNI_GETJAVAVM_ENTRY(env, (void **) vm);
3381 *vm = (JavaVM *)(&main_vm);
3382 HOTSPOT_JNI_GETJAVAVM_RETURN(JNI_OK);
3383 return JNI_OK;
3384 JNI_END
3385
3386
3387 JNI_ENTRY(jobject, jni_GetModule(JNIEnv* env, jclass clazz))
3388 JNIWrapper("GetModule");
3389 return Modules::get_module(clazz, THREAD);
3390 JNI_END
3391
3392
3393 // Structure containing all jni functions
3394 struct JNINativeInterface_ jni_NativeInterface = {
3395 NULL,
3396 NULL,
3397 NULL,
3398
3399 NULL,
3400
3401 jni_GetVersion,
3402
3403 jni_DefineClass,
3404 jni_FindClass,
3405
3406 jni_FromReflectedMethod,
3407 jni_FromReflectedField,
3408
3409 jni_ToReflectedMethod,
3410
3411 jni_GetSuperclass,
3412 jni_IsAssignableFrom,
3413
3414 jni_ToReflectedField,
3415
3416 jni_Throw,
3417 jni_ThrowNew,
3418 jni_ExceptionOccurred,
3419 jni_ExceptionDescribe,
3420 jni_ExceptionClear,
3421 jni_FatalError,
3422
3423 jni_PushLocalFrame,
3424 jni_PopLocalFrame,
3425
3426 jni_NewGlobalRef,
3427 jni_DeleteGlobalRef,
3428 jni_DeleteLocalRef,
3429 jni_IsSameObject,
3430
3431 jni_NewLocalRef,
3432 jni_EnsureLocalCapacity,
3433
3434 jni_AllocObject,
3435 jni_NewObject,
3436 jni_NewObjectV,
3437 jni_NewObjectA,
3438
3439 jni_GetObjectClass,
3440 jni_IsInstanceOf,
3441
3442 jni_GetMethodID,
3443
3444 jni_CallObjectMethod,
3445 jni_CallObjectMethodV,
3446 jni_CallObjectMethodA,
3447 jni_CallBooleanMethod,
3448 jni_CallBooleanMethodV,
3449 jni_CallBooleanMethodA,
3450 jni_CallByteMethod,
3451 jni_CallByteMethodV,
3452 jni_CallByteMethodA,
3453 jni_CallCharMethod,
3454 jni_CallCharMethodV,
3455 jni_CallCharMethodA,
3456 jni_CallShortMethod,
3457 jni_CallShortMethodV,
3458 jni_CallShortMethodA,
3459 jni_CallIntMethod,
3460 jni_CallIntMethodV,
3461 jni_CallIntMethodA,
3462 jni_CallLongMethod,
3463 jni_CallLongMethodV,
3464 jni_CallLongMethodA,
3465 jni_CallFloatMethod,
3466 jni_CallFloatMethodV,
3467 jni_CallFloatMethodA,
3468 jni_CallDoubleMethod,
3469 jni_CallDoubleMethodV,
3470 jni_CallDoubleMethodA,
3471 jni_CallVoidMethod,
3472 jni_CallVoidMethodV,
3473 jni_CallVoidMethodA,
3474
3475 jni_CallNonvirtualObjectMethod,
3476 jni_CallNonvirtualObjectMethodV,
3477 jni_CallNonvirtualObjectMethodA,
3478 jni_CallNonvirtualBooleanMethod,
3479 jni_CallNonvirtualBooleanMethodV,
3480 jni_CallNonvirtualBooleanMethodA,
3481 jni_CallNonvirtualByteMethod,
3482 jni_CallNonvirtualByteMethodV,
3483 jni_CallNonvirtualByteMethodA,
3484 jni_CallNonvirtualCharMethod,
3485 jni_CallNonvirtualCharMethodV,
3486 jni_CallNonvirtualCharMethodA,
3487 jni_CallNonvirtualShortMethod,
3488 jni_CallNonvirtualShortMethodV,
3489 jni_CallNonvirtualShortMethodA,
3490 jni_CallNonvirtualIntMethod,
3491 jni_CallNonvirtualIntMethodV,
3492 jni_CallNonvirtualIntMethodA,
3493 jni_CallNonvirtualLongMethod,
3494 jni_CallNonvirtualLongMethodV,
3495 jni_CallNonvirtualLongMethodA,
3496 jni_CallNonvirtualFloatMethod,
3497 jni_CallNonvirtualFloatMethodV,
3498 jni_CallNonvirtualFloatMethodA,
3499 jni_CallNonvirtualDoubleMethod,
3500 jni_CallNonvirtualDoubleMethodV,
3501 jni_CallNonvirtualDoubleMethodA,
3502 jni_CallNonvirtualVoidMethod,
3503 jni_CallNonvirtualVoidMethodV,
3504 jni_CallNonvirtualVoidMethodA,
3505
3506 jni_GetFieldID,
3507
3508 jni_GetObjectField,
3509 jni_GetBooleanField,
3510 jni_GetByteField,
3511 jni_GetCharField,
3512 jni_GetShortField,
3513 jni_GetIntField,
3514 jni_GetLongField,
3515 jni_GetFloatField,
3516 jni_GetDoubleField,
3517
3518 jni_SetObjectField,
3519 jni_SetBooleanField,
3520 jni_SetByteField,
3521 jni_SetCharField,
3522 jni_SetShortField,
3523 jni_SetIntField,
3524 jni_SetLongField,
3525 jni_SetFloatField,
3526 jni_SetDoubleField,
3527
3528 jni_GetStaticMethodID,
3529
3530 jni_CallStaticObjectMethod,
3531 jni_CallStaticObjectMethodV,
3532 jni_CallStaticObjectMethodA,
3533 jni_CallStaticBooleanMethod,
3534 jni_CallStaticBooleanMethodV,
3535 jni_CallStaticBooleanMethodA,
3536 jni_CallStaticByteMethod,
3537 jni_CallStaticByteMethodV,
3538 jni_CallStaticByteMethodA,
3539 jni_CallStaticCharMethod,
3540 jni_CallStaticCharMethodV,
3541 jni_CallStaticCharMethodA,
3542 jni_CallStaticShortMethod,
3543 jni_CallStaticShortMethodV,
3544 jni_CallStaticShortMethodA,
3545 jni_CallStaticIntMethod,
3546 jni_CallStaticIntMethodV,
3547 jni_CallStaticIntMethodA,
3548 jni_CallStaticLongMethod,
3549 jni_CallStaticLongMethodV,
3550 jni_CallStaticLongMethodA,
3551 jni_CallStaticFloatMethod,
3552 jni_CallStaticFloatMethodV,
3553 jni_CallStaticFloatMethodA,
3554 jni_CallStaticDoubleMethod,
3555 jni_CallStaticDoubleMethodV,
3556 jni_CallStaticDoubleMethodA,
3557 jni_CallStaticVoidMethod,
3558 jni_CallStaticVoidMethodV,
3559 jni_CallStaticVoidMethodA,
3560
3561 jni_GetStaticFieldID,
3562
3563 jni_GetStaticObjectField,
3564 jni_GetStaticBooleanField,
3565 jni_GetStaticByteField,
3566 jni_GetStaticCharField,
3567 jni_GetStaticShortField,
3568 jni_GetStaticIntField,
3569 jni_GetStaticLongField,
3570 jni_GetStaticFloatField,
3571 jni_GetStaticDoubleField,
3572
3573 jni_SetStaticObjectField,
3574 jni_SetStaticBooleanField,
3575 jni_SetStaticByteField,
3576 jni_SetStaticCharField,
3577 jni_SetStaticShortField,
3578 jni_SetStaticIntField,
3579 jni_SetStaticLongField,
3580 jni_SetStaticFloatField,
3581 jni_SetStaticDoubleField,
3582
3583 jni_NewString,
3584 jni_GetStringLength,
3585 jni_GetStringChars,
3586 jni_ReleaseStringChars,
3587
3588 jni_NewStringUTF,
3589 jni_GetStringUTFLength,
3590 jni_GetStringUTFChars,
3591 jni_ReleaseStringUTFChars,
3592
3593 jni_GetArrayLength,
3594
3595 jni_NewObjectArray,
3596 jni_GetObjectArrayElement,
3597 jni_SetObjectArrayElement,
3598
3599 jni_NewBooleanArray,
3600 jni_NewByteArray,
3601 jni_NewCharArray,
3602 jni_NewShortArray,
3603 jni_NewIntArray,
3604 jni_NewLongArray,
3605 jni_NewFloatArray,
3606 jni_NewDoubleArray,
3607
3608 jni_GetBooleanArrayElements,
3609 jni_GetByteArrayElements,
3610 jni_GetCharArrayElements,
3611 jni_GetShortArrayElements,
3612 jni_GetIntArrayElements,
3613 jni_GetLongArrayElements,
3614 jni_GetFloatArrayElements,
3615 jni_GetDoubleArrayElements,
3616
3617 jni_ReleaseBooleanArrayElements,
3618 jni_ReleaseByteArrayElements,
3619 jni_ReleaseCharArrayElements,
3620 jni_ReleaseShortArrayElements,
3621 jni_ReleaseIntArrayElements,
3622 jni_ReleaseLongArrayElements,
3623 jni_ReleaseFloatArrayElements,
3624 jni_ReleaseDoubleArrayElements,
3625
3626 jni_GetBooleanArrayRegion,
3627 jni_GetByteArrayRegion,
3628 jni_GetCharArrayRegion,
3629 jni_GetShortArrayRegion,
3630 jni_GetIntArrayRegion,
3631 jni_GetLongArrayRegion,
3632 jni_GetFloatArrayRegion,
3633 jni_GetDoubleArrayRegion,
3634
3635 jni_SetBooleanArrayRegion,
3636 jni_SetByteArrayRegion,
3637 jni_SetCharArrayRegion,
3638 jni_SetShortArrayRegion,
3639 jni_SetIntArrayRegion,
3640 jni_SetLongArrayRegion,
3641 jni_SetFloatArrayRegion,
3642 jni_SetDoubleArrayRegion,
3643
3644 jni_RegisterNatives,
3645 jni_UnregisterNatives,
3646
3647 jni_MonitorEnter,
3648 jni_MonitorExit,
3649
3650 jni_GetJavaVM,
3651
3652 jni_GetStringRegion,
3653 jni_GetStringUTFRegion,
3654
3655 jni_GetPrimitiveArrayCritical,
3656 jni_ReleasePrimitiveArrayCritical,
3657
3658 jni_GetStringCritical,
3659 jni_ReleaseStringCritical,
3660
3661 jni_NewWeakGlobalRef,
3662 jni_DeleteWeakGlobalRef,
3663
3664 jni_ExceptionCheck,
3665
3666 jni_NewDirectByteBuffer,
3667 jni_GetDirectBufferAddress,
3668 jni_GetDirectBufferCapacity,
3669
3670 // New 1_6 features
3671
3672 jni_GetObjectRefType,
3673
3674 // Module features
3675
3676 jni_GetModule
3677 };
3678
3679
3680 // For jvmti use to modify jni function table.
3681 // Java threads in native contiues to run until it is transitioned
3682 // to VM at safepoint. Before the transition or before it is blocked
3683 // for safepoint it may access jni function table. VM could crash if
3684 // any java thread access the jni function table in the middle of memcpy.
3685 // To avoid this each function pointers are copied automically.
3686 void copy_jni_function_table(const struct JNINativeInterface_ *new_jni_NativeInterface) {
3687 assert(SafepointSynchronize::is_at_safepoint(), "must be at safepoint");
3688 intptr_t *a = (intptr_t *) jni_functions();
3689 intptr_t *b = (intptr_t *) new_jni_NativeInterface;
3690 for (uint i=0; i < sizeof(struct JNINativeInterface_)/sizeof(void *); i++) {
3691 Atomic::store(a++, *b++);
3692 }
3693 }
3694
3695 void quicken_jni_functions() {
3696 // Replace Get<Primitive>Field with fast versions
3697 if (UseFastJNIAccessors && !VerifyJNIFields && !CountJNICalls && !CheckJNICalls) {
3698 address func;
3699 func = JNI_FastGetField::generate_fast_get_boolean_field();
3700 if (func != (address)-1) {
3701 jni_NativeInterface.GetBooleanField = (GetBooleanField_t)func;
3702 }
3703 func = JNI_FastGetField::generate_fast_get_byte_field();
3704 if (func != (address)-1) {
3705 jni_NativeInterface.GetByteField = (GetByteField_t)func;
3706 }
3707 func = JNI_FastGetField::generate_fast_get_char_field();
3708 if (func != (address)-1) {
3709 jni_NativeInterface.GetCharField = (GetCharField_t)func;
3710 }
3711 func = JNI_FastGetField::generate_fast_get_short_field();
3712 if (func != (address)-1) {
3713 jni_NativeInterface.GetShortField = (GetShortField_t)func;
3714 }
3715 func = JNI_FastGetField::generate_fast_get_int_field();
3716 if (func != (address)-1) {
3717 jni_NativeInterface.GetIntField = (GetIntField_t)func;
3718 }
3719 func = JNI_FastGetField::generate_fast_get_long_field();
3720 if (func != (address)-1) {
3721 jni_NativeInterface.GetLongField = (GetLongField_t)func;
3722 }
3723 func = JNI_FastGetField::generate_fast_get_float_field();
3724 if (func != (address)-1) {
3725 jni_NativeInterface.GetFloatField = (GetFloatField_t)func;
3726 }
3727 func = JNI_FastGetField::generate_fast_get_double_field();
3728 if (func != (address)-1) {
3729 jni_NativeInterface.GetDoubleField = (GetDoubleField_t)func;
3730 }
3731 }
3732 }
3733
3734 // Returns the function structure
3735 struct JNINativeInterface_* jni_functions() {
3736 #if INCLUDE_JNI_CHECK
3737 if (CheckJNICalls) return jni_functions_check();
3738 #endif // INCLUDE_JNI_CHECK
3739 return &jni_NativeInterface;
3740 }
3741
3742 // Returns the function structure
3743 struct JNINativeInterface_* jni_functions_nocheck() {
3744 return &jni_NativeInterface;
3745 }
3746
3747 static void post_thread_start_event(const JavaThread* jt) {
3748 assert(jt != NULL, "invariant");
3749 EventThreadStart event;
3750 if (event.should_commit()) {
3751 event.set_thread(JFR_THREAD_ID(jt));
3752 event.commit();
3753 }
3754 }
3755
3756 // Invocation API
3757
3758
3759 // Forward declaration
3760 extern const struct JNIInvokeInterface_ jni_InvokeInterface;
3761
3762 // Global invocation API vars
3763 volatile int vm_created = 0;
3764 // Indicate whether it is safe to recreate VM
3765 volatile int safe_to_recreate_vm = 1;
3766 struct JavaVM_ main_vm = {&jni_InvokeInterface};
3767
3768
3769 #define JAVASTACKSIZE (400 * 1024) /* Default size of a thread java stack */
3770 enum { VERIFY_NONE, VERIFY_REMOTE, VERIFY_ALL };
3771
3772 DT_RETURN_MARK_DECL(GetDefaultJavaVMInitArgs, jint
3773 , HOTSPOT_JNI_GETDEFAULTJAVAVMINITARGS_RETURN(_ret_ref));
3774
3775 _JNI_IMPORT_OR_EXPORT_ jint JNICALL JNI_GetDefaultJavaVMInitArgs(void *args_) {
3776 HOTSPOT_JNI_GETDEFAULTJAVAVMINITARGS_ENTRY(args_);
3777 JDK1_1InitArgs *args = (JDK1_1InitArgs *)args_;
3778 jint ret = JNI_ERR;
3779 DT_RETURN_MARK(GetDefaultJavaVMInitArgs, jint, (const jint&)ret);
3780
3781 if (Threads::is_supported_jni_version(args->version)) {
3782 ret = JNI_OK;
3783 }
3784 // 1.1 style no longer supported in hotspot.
3785 // According the JNI spec, we should update args->version on return.
3786 // We also use the structure to communicate with launcher about default
3787 // stack size.
3788 if (args->version == JNI_VERSION_1_1) {
3789 args->version = JNI_VERSION_1_2;
3790 // javaStackSize is int in arguments structure
3791 assert(jlong(ThreadStackSize) * K < INT_MAX, "integer overflow");
3792 args->javaStackSize = (jint)(ThreadStackSize * K);
3793 }
3794 return ret;
3795 }
3796
3797 DT_RETURN_MARK_DECL(CreateJavaVM, jint
3798 , HOTSPOT_JNI_CREATEJAVAVM_RETURN(_ret_ref));
3799
3800 static jint JNI_CreateJavaVM_inner(JavaVM **vm, void **penv, void *args) {
3801 HOTSPOT_JNI_CREATEJAVAVM_ENTRY((void **) vm, penv, args);
3802
3803 jint result = JNI_ERR;
3804 DT_RETURN_MARK(CreateJavaVM, jint, (const jint&)result);
3805
3806 // We're about to use Atomic::xchg for synchronization. Some Zero
3807 // platforms use the GCC builtin __sync_lock_test_and_set for this,
3808 // but __sync_lock_test_and_set is not guaranteed to do what we want
3809 // on all architectures. So we check it works before relying on it.
3810 #if defined(ZERO) && defined(ASSERT)
3811 {
3812 jint a = 0xcafebabe;
3813 jint b = Atomic::xchg(&a, (jint) 0xdeadbeef);
3814 void *c = &a;
3815 void *d = Atomic::xchg(&c, &b);
3816 assert(a == (jint) 0xdeadbeef && b == (jint) 0xcafebabe, "Atomic::xchg() works");
3817 assert(c == &b && d == &a, "Atomic::xchg() works");
3818 }
3819 #endif // ZERO && ASSERT
3820
3821 // At the moment it's only possible to have one Java VM,
3822 // since some of the runtime state is in global variables.
3823
3824 // We cannot use our mutex locks here, since they only work on
3825 // Threads. We do an atomic compare and exchange to ensure only
3826 // one thread can call this method at a time
3827
3828 // We use Atomic::xchg rather than Atomic::add/dec since on some platforms
3829 // the add/dec implementations are dependent on whether we are running
3830 // on a multiprocessor Atomic::xchg does not have this problem.
3831 if (Atomic::xchg(&vm_created, 1) == 1) {
3832 return JNI_EEXIST; // already created, or create attempt in progress
3833 }
3834 if (Atomic::xchg(&safe_to_recreate_vm, 0) == 0) {
3835 return JNI_ERR; // someone tried and failed and retry not allowed.
3836 }
3837
3838 assert(vm_created == 1, "vm_created is true during the creation");
3839
3840 /**
3841 * Certain errors during initialization are recoverable and do not
3842 * prevent this method from being called again at a later time
3843 * (perhaps with different arguments). However, at a certain
3844 * point during initialization if an error occurs we cannot allow
3845 * this function to be called again (or it will crash). In those
3846 * situations, the 'canTryAgain' flag is set to false, which atomically
3847 * sets safe_to_recreate_vm to 1, such that any new call to
3848 * JNI_CreateJavaVM will immediately fail using the above logic.
3849 */
3850 bool can_try_again = true;
3851
3852 result = Threads::create_vm((JavaVMInitArgs*) args, &can_try_again);
3853 if (result == JNI_OK) {
3854 JavaThread *thread = JavaThread::current();
3855 assert(!thread->has_pending_exception(), "should have returned not OK");
3856 /* thread is thread_in_vm here */
3857 *vm = (JavaVM *)(&main_vm);
3858 *(JNIEnv**)penv = thread->jni_environment();
3859
3860 #if INCLUDE_JVMCI
3861 if (EnableJVMCI) {
3862 if (UseJVMCICompiler) {
3863 // JVMCI is initialized on a CompilerThread
3864 if (BootstrapJVMCI) {
3865 JavaThread* THREAD = thread;
3866 JVMCICompiler* compiler = JVMCICompiler::instance(true, CATCH);
3867 compiler->bootstrap(THREAD);
3868 if (HAS_PENDING_EXCEPTION) {
3869 HandleMark hm;
3870 vm_exit_during_initialization(Handle(THREAD, PENDING_EXCEPTION));
3871 }
3872 }
3873 }
3874 }
3875 #endif
3876
3877 // Notify JVMTI
3878 if (JvmtiExport::should_post_thread_life()) {
3879 JvmtiExport::post_thread_start(thread);
3880 }
3881
3882 post_thread_start_event(thread);
3883
3884 #ifndef PRODUCT
3885 if (ReplayCompiles) ciReplay::replay(thread);
3886
3887 // Some platforms (like Win*) need a wrapper around these test
3888 // functions in order to properly handle error conditions.
3889 VMError::test_error_handler();
3890 #endif
3891
3892 // Since this is not a JVM_ENTRY we have to set the thread state manually before leaving.
3893 ThreadStateTransition::transition(thread, _thread_in_vm, _thread_in_native);
3894 } else {
3895 // If create_vm exits because of a pending exception, exit with that
3896 // exception. In the future when we figure out how to reclaim memory,
3897 // we may be able to exit with JNI_ERR and allow the calling application
3898 // to continue.
3899 if (Universe::is_fully_initialized()) {
3900 // otherwise no pending exception possible - VM will already have aborted
3901 JavaThread* THREAD = JavaThread::current();
3902 if (HAS_PENDING_EXCEPTION) {
3903 HandleMark hm;
3904 vm_exit_during_initialization(Handle(THREAD, PENDING_EXCEPTION));
3905 }
3906 }
3907
3908 if (can_try_again) {
3909 // reset safe_to_recreate_vm to 1 so that retrial would be possible
3910 safe_to_recreate_vm = 1;
3911 }
3912
3913 // Creation failed. We must reset vm_created
3914 *vm = 0;
3915 *(JNIEnv**)penv = 0;
3916 // reset vm_created last to avoid race condition. Use OrderAccess to
3917 // control both compiler and architectural-based reordering.
3918 Atomic::release_store(&vm_created, 0);
3919 }
3920
3921 // Flush stdout and stderr before exit.
3922 fflush(stdout);
3923 fflush(stderr);
3924
3925 return result;
3926
3927 }
3928
3929 _JNI_IMPORT_OR_EXPORT_ jint JNICALL JNI_CreateJavaVM(JavaVM **vm, void **penv, void *args) {
3930 jint result = JNI_ERR;
3931 // On Windows, let CreateJavaVM run with SEH protection
3932 #ifdef _WIN32
3933 __try {
3934 #endif
3935 result = JNI_CreateJavaVM_inner(vm, penv, args);
3936 #ifdef _WIN32
3937 } __except(topLevelExceptionFilter((_EXCEPTION_POINTERS*)_exception_info())) {
3938 // Nothing to do.
3939 }
3940 #endif
3941 return result;
3942 }
3943
3944 _JNI_IMPORT_OR_EXPORT_ jint JNICALL JNI_GetCreatedJavaVMs(JavaVM **vm_buf, jsize bufLen, jsize *numVMs) {
3945 // See bug 4367188, the wrapper can sometimes cause VM crashes
3946 // JNIWrapper("GetCreatedJavaVMs");
3947
3948 HOTSPOT_JNI_GETCREATEDJAVAVMS_ENTRY((void **) vm_buf, bufLen, (uintptr_t *) numVMs);
3949
3950 if (vm_created == 1) {
3951 if (numVMs != NULL) *numVMs = 1;
3952 if (bufLen > 0) *vm_buf = (JavaVM *)(&main_vm);
3953 } else {
3954 if (numVMs != NULL) *numVMs = 0;
3955 }
3956 HOTSPOT_JNI_GETCREATEDJAVAVMS_RETURN(JNI_OK);
3957 return JNI_OK;
3958 }
3959
3960 extern "C" {
3961
3962 DT_RETURN_MARK_DECL(DestroyJavaVM, jint
3963 , HOTSPOT_JNI_DESTROYJAVAVM_RETURN(_ret_ref));
3964
3965 static jint JNICALL jni_DestroyJavaVM_inner(JavaVM *vm) {
3966 HOTSPOT_JNI_DESTROYJAVAVM_ENTRY(vm);
3967 jint res = JNI_ERR;
3968 DT_RETURN_MARK(DestroyJavaVM, jint, (const jint&)res);
3969
3970 if (vm_created == 0) {
3971 res = JNI_ERR;
3972 return res;
3973 }
3974
3975 JNIWrapper("DestroyJavaVM");
3976 JNIEnv *env;
3977 JavaVMAttachArgs destroyargs;
3978 destroyargs.version = CurrentVersion;
3979 destroyargs.name = (char *)"DestroyJavaVM";
3980 destroyargs.group = NULL;
3981 res = vm->AttachCurrentThread((void **)&env, (void *)&destroyargs);
3982 if (res != JNI_OK) {
3983 return res;
3984 }
3985
3986 // Since this is not a JVM_ENTRY we have to set the thread state manually before entering.
3987 JavaThread* thread = JavaThread::current();
3988 ThreadStateTransition::transition_from_native(thread, _thread_in_vm);
3989 if (Threads::destroy_vm()) {
3990 // Should not change thread state, VM is gone
3991 vm_created = 0;
3992 res = JNI_OK;
3993 return res;
3994 } else {
3995 ThreadStateTransition::transition(thread, _thread_in_vm, _thread_in_native);
3996 res = JNI_ERR;
3997 return res;
3998 }
3999 }
4000
4001 jint JNICALL jni_DestroyJavaVM(JavaVM *vm) {
4002 jint result = JNI_ERR;
4003 // On Windows, we need SEH protection
4004 #ifdef _WIN32
4005 __try {
4006 #endif
4007 result = jni_DestroyJavaVM_inner(vm);
4008 #ifdef _WIN32
4009 } __except(topLevelExceptionFilter((_EXCEPTION_POINTERS*)_exception_info())) {
4010 // Nothing to do.
4011 }
4012 #endif
4013 return result;
4014 }
4015
4016 static jint attach_current_thread(JavaVM *vm, void **penv, void *_args, bool daemon) {
4017 JavaVMAttachArgs *args = (JavaVMAttachArgs *) _args;
4018
4019 // Check below commented out from JDK1.2fcs as well
4020 /*
4021 if (args && (args->version != JNI_VERSION_1_1 || args->version != JNI_VERSION_1_2)) {
4022 return JNI_EVERSION;
4023 }
4024 */
4025
4026 Thread* t = Thread::current_or_null();
4027 if (t != NULL) {
4028 // If the thread has been attached this operation is a no-op
4029 *(JNIEnv**)penv = ((JavaThread*) t)->jni_environment();
4030 return JNI_OK;
4031 }
4032
4033 // Create a thread and mark it as attaching so it will be skipped by the
4034 // ThreadsListEnumerator - see CR 6404306
4035 JavaThread* thread = new JavaThread(true);
4036
4037 // Set correct safepoint info. The thread is going to call into Java when
4038 // initializing the Java level thread object. Hence, the correct state must
4039 // be set in order for the Safepoint code to deal with it correctly.
4040 thread->set_thread_state(_thread_in_vm);
4041 thread->record_stack_base_and_size();
4042 thread->register_thread_stack_with_NMT();
4043 thread->initialize_thread_current();
4044
4045 if (!os::create_attached_thread(thread)) {
4046 thread->smr_delete();
4047 return JNI_ERR;
4048 }
4049 // Enable stack overflow checks
4050 thread->create_stack_guard_pages();
4051
4052 thread->initialize_tlab();
4053
4054 thread->cache_global_variables();
4055
4056 // This thread will not do a safepoint check, since it has
4057 // not been added to the Thread list yet.
4058 { MutexLocker ml(Threads_lock);
4059 // This must be inside this lock in order to get FullGCALot to work properly, i.e., to
4060 // avoid this thread trying to do a GC before it is added to the thread-list
4061 thread->set_active_handles(JNIHandleBlock::allocate_block());
4062 Threads::add(thread, daemon);
4063 }
4064 // Create thread group and name info from attach arguments
4065 oop group = NULL;
4066 char* thread_name = NULL;
4067 if (args != NULL && Threads::is_supported_jni_version(args->version)) {
4068 group = JNIHandles::resolve(args->group);
4069 thread_name = args->name; // may be NULL
4070 }
4071 if (group == NULL) group = Universe::main_thread_group();
4072
4073 // Create Java level thread object and attach it to this thread
4074 bool attach_failed = false;
4075 {
4076 EXCEPTION_MARK;
4077 HandleMark hm(THREAD);
4078 Handle thread_group(THREAD, group);
4079 thread->allocate_threadObj(thread_group, thread_name, daemon, THREAD);
4080 if (HAS_PENDING_EXCEPTION) {
4081 CLEAR_PENDING_EXCEPTION;
4082 // cleanup outside the handle mark.
4083 attach_failed = true;
4084 }
4085 }
4086
4087 if (attach_failed) {
4088 // Added missing cleanup
4089 thread->cleanup_failed_attach_current_thread(daemon);
4090 return JNI_ERR;
4091 }
4092
4093 // mark the thread as no longer attaching
4094 // this uses a fence to push the change through so we don't have
4095 // to regrab the threads_lock
4096 thread->set_done_attaching_via_jni();
4097
4098 // Set java thread status.
4099 java_lang_Thread::set_thread_status(thread->threadObj(),
4100 java_lang_Thread::RUNNABLE);
4101
4102 // Notify the debugger
4103 if (JvmtiExport::should_post_thread_life()) {
4104 JvmtiExport::post_thread_start(thread);
4105 }
4106
4107 post_thread_start_event(thread);
4108
4109 *(JNIEnv**)penv = thread->jni_environment();
4110
4111 // Now leaving the VM, so change thread_state. This is normally automatically taken care
4112 // of in the JVM_ENTRY. But in this situation we have to do it manually. Notice, that by
4113 // using ThreadStateTransition::transition, we do a callback to the safepoint code if
4114 // needed.
4115
4116 ThreadStateTransition::transition(thread, _thread_in_vm, _thread_in_native);
4117
4118 // Perform any platform dependent FPU setup
4119 os::setup_fpu();
4120
4121 return JNI_OK;
4122 }
4123
4124
4125 jint JNICALL jni_AttachCurrentThread(JavaVM *vm, void **penv, void *_args) {
4126 HOTSPOT_JNI_ATTACHCURRENTTHREAD_ENTRY(vm, penv, _args);
4127 if (vm_created == 0) {
4128 HOTSPOT_JNI_ATTACHCURRENTTHREAD_RETURN((uint32_t) JNI_ERR);
4129 return JNI_ERR;
4130 }
4131
4132 JNIWrapper("AttachCurrentThread");
4133 jint ret = attach_current_thread(vm, penv, _args, false);
4134 HOTSPOT_JNI_ATTACHCURRENTTHREAD_RETURN(ret);
4135 return ret;
4136 }
4137
4138
4139 jint JNICALL jni_DetachCurrentThread(JavaVM *vm) {
4140 HOTSPOT_JNI_DETACHCURRENTTHREAD_ENTRY(vm);
4141
4142 JNIWrapper("DetachCurrentThread");
4143
4144 // If the thread has already been detached the operation is a no-op
4145 if (Thread::current_or_null() == NULL) {
4146 HOTSPOT_JNI_DETACHCURRENTTHREAD_RETURN(JNI_OK);
4147 return JNI_OK;
4148 }
4149
4150 VM_Exit::block_if_vm_exited();
4151
4152 JavaThread* thread = JavaThread::current();
4153 if (thread->has_last_Java_frame()) {
4154 HOTSPOT_JNI_DETACHCURRENTTHREAD_RETURN((uint32_t) JNI_ERR);
4155 // Can't detach a thread that's running java, that can't work.
4156 return JNI_ERR;
4157 }
4158
4159 // Safepoint support. Have to do call-back to safepoint code, if in the
4160 // middle of a safepoint operation
4161 ThreadStateTransition::transition_from_native(thread, _thread_in_vm);
4162
4163 // XXX: Note that JavaThread::exit() call below removes the guards on the
4164 // stack pages set up via enable_stack_{red,yellow}_zone() calls
4165 // above in jni_AttachCurrentThread. Unfortunately, while the setting
4166 // of the guards is visible in jni_AttachCurrentThread above,
4167 // the removal of the guards is buried below in JavaThread::exit()
4168 // here. The abstraction should be more symmetrically either exposed
4169 // or hidden (e.g. it could probably be hidden in the same
4170 // (platform-dependent) methods where we do alternate stack
4171 // maintenance work?)
4172 thread->exit(false, JavaThread::jni_detach);
4173 thread->smr_delete();
4174
4175 HOTSPOT_JNI_DETACHCURRENTTHREAD_RETURN(JNI_OK);
4176 return JNI_OK;
4177 }
4178
4179 DT_RETURN_MARK_DECL(GetEnv, jint
4180 , HOTSPOT_JNI_GETENV_RETURN(_ret_ref));
4181
4182 jint JNICALL jni_GetEnv(JavaVM *vm, void **penv, jint version) {
4183 HOTSPOT_JNI_GETENV_ENTRY(vm, penv, version);
4184 jint ret = JNI_ERR;
4185 DT_RETURN_MARK(GetEnv, jint, (const jint&)ret);
4186
4187 if (vm_created == 0) {
4188 *penv = NULL;
4189 ret = JNI_EDETACHED;
4190 return ret;
4191 }
4192
4193 if (JniExportedInterface::GetExportedInterface(vm, penv, version, &ret)) {
4194 return ret;
4195 }
4196
4197 #ifndef JVMPI_VERSION_1
4198 // need these in order to be polite about older agents
4199 #define JVMPI_VERSION_1 ((jint)0x10000001)
4200 #define JVMPI_VERSION_1_1 ((jint)0x10000002)
4201 #define JVMPI_VERSION_1_2 ((jint)0x10000003)
4202 #endif // !JVMPI_VERSION_1
4203
4204 Thread* thread = Thread::current_or_null();
4205 if (thread != NULL && thread->is_Java_thread()) {
4206 if (Threads::is_supported_jni_version_including_1_1(version)) {
4207 *(JNIEnv**)penv = ((JavaThread*) thread)->jni_environment();
4208 ret = JNI_OK;
4209 return ret;
4210
4211 } else if (version == JVMPI_VERSION_1 ||
4212 version == JVMPI_VERSION_1_1 ||
4213 version == JVMPI_VERSION_1_2) {
4214 tty->print_cr("ERROR: JVMPI, an experimental interface, is no longer supported.");
4215 tty->print_cr("Please use the supported interface: the JVM Tool Interface (JVM TI).");
4216 ret = JNI_EVERSION;
4217 return ret;
4218 } else if (JvmtiExport::is_jvmdi_version(version)) {
4219 tty->print_cr("FATAL ERROR: JVMDI is no longer supported.");
4220 tty->print_cr("Please use the supported interface: the JVM Tool Interface (JVM TI).");
4221 ret = JNI_EVERSION;
4222 return ret;
4223 } else {
4224 *penv = NULL;
4225 ret = JNI_EVERSION;
4226 return ret;
4227 }
4228 } else {
4229 *penv = NULL;
4230 ret = JNI_EDETACHED;
4231 return ret;
4232 }
4233 }
4234
4235
4236 jint JNICALL jni_AttachCurrentThreadAsDaemon(JavaVM *vm, void **penv, void *_args) {
4237 HOTSPOT_JNI_ATTACHCURRENTTHREADASDAEMON_ENTRY(vm, penv, _args);
4238 if (vm_created == 0) {
4239 HOTSPOT_JNI_ATTACHCURRENTTHREADASDAEMON_RETURN((uint32_t) JNI_ERR);
4240 return JNI_ERR;
4241 }
4242
4243 JNIWrapper("AttachCurrentThreadAsDaemon");
4244 jint ret = attach_current_thread(vm, penv, _args, true);
4245 HOTSPOT_JNI_ATTACHCURRENTTHREADASDAEMON_RETURN(ret);
4246 return ret;
4247 }
4248
4249
4250 } // End extern "C"
4251
4252 const struct JNIInvokeInterface_ jni_InvokeInterface = {
4253 NULL,
4254 NULL,
4255 NULL,
4256
4257 jni_DestroyJavaVM,
4258 jni_AttachCurrentThread,
4259 jni_DetachCurrentThread,
4260 jni_GetEnv,
4261 jni_AttachCurrentThreadAsDaemon
4262 };