1 /*
2 * Copyright (c) 1997, 2011, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 *
23 */
24
25 #include "precompiled.hpp"
26 #include "classfile/classLoader.hpp"
27 #include "classfile/javaClasses.hpp"
28 #include "classfile/symbolTable.hpp"
29 #include "classfile/systemDictionary.hpp"
30 #include "classfile/vmSymbols.hpp"
31 #include "interpreter/linkResolver.hpp"
32 #ifndef SERIALGC
33 #include "gc_implementation/g1/g1SATBCardTableModRefBS.hpp"
34 #endif // SERIALGC
35 #include "memory/allocation.inline.hpp"
36 #include "memory/gcLocker.inline.hpp"
37 #include "memory/oopFactory.hpp"
38 #include "memory/universe.inline.hpp"
39 #include "oops/instanceKlass.hpp"
40 #include "oops/instanceOop.hpp"
41 #include "oops/markOop.hpp"
42 #include "oops/methodOop.hpp"
43 #include "oops/objArrayKlass.hpp"
44 #include "oops/objArrayOop.hpp"
45 #include "oops/oop.inline.hpp"
46 #include "oops/symbol.hpp"
47 #include "oops/typeArrayKlass.hpp"
48 #include "oops/typeArrayOop.hpp"
49 #include "prims/jni.h"
50 #include "prims/jniCheck.hpp"
51 #include "prims/jniFastGetField.hpp"
52 #include "prims/jvm.h"
53 #include "prims/jvm_misc.hpp"
54 #include "prims/jvmtiExport.hpp"
55 #include "prims/jvmtiThreadState.hpp"
56 #include "runtime/compilationPolicy.hpp"
57 #include "runtime/fieldDescriptor.hpp"
58 #include "runtime/fprofiler.hpp"
59 #include "runtime/handles.inline.hpp"
60 #include "runtime/interfaceSupport.hpp"
61 #include "runtime/java.hpp"
62 #include "runtime/javaCalls.hpp"
63 #include "runtime/jfieldIDWorkaround.hpp"
64 #include "runtime/reflection.hpp"
65 #include "runtime/sharedRuntime.hpp"
66 #include "runtime/signature.hpp"
67 #include "runtime/vm_operations.hpp"
68 #include "services/runtimeService.hpp"
69 #include "utilities/defaultStream.hpp"
70 #include "utilities/dtrace.hpp"
71 #include "utilities/events.hpp"
72 #include "utilities/histogram.hpp"
73 #ifdef TARGET_OS_FAMILY_linux
74 # include "os_linux.inline.hpp"
75 # include "thread_linux.inline.hpp"
76 #endif
77 #ifdef TARGET_OS_FAMILY_solaris
78 # include "os_solaris.inline.hpp"
79 # include "thread_solaris.inline.hpp"
80 #endif
81 #ifdef TARGET_OS_FAMILY_windows
82 # include "os_windows.inline.hpp"
83 # include "thread_windows.inline.hpp"
84 #endif
85 #ifdef TARGET_OS_FAMILY_bsd
86 # include "os_bsd.inline.hpp"
87 # include "thread_bsd.inline.hpp"
88 #endif
89
90 static jint CurrentVersion = JNI_VERSION_1_6;
91
92
93 // The DT_RETURN_MARK macros create a scoped object to fire the dtrace
94 // '-return' probe regardless of the return path is taken out of the function.
95 // Methods that have multiple return paths use this to avoid having to
96 // instrument each return path. Methods that use CHECK or THROW must use this
97 // since those macros can cause an immedate uninstrumented return.
98 //
99 // In order to get the return value, a reference to the variable containing
100 // the return value must be passed to the contructor of the object, and
101 // the return value must be set before return (since the mark object has
102 // a reference to it).
103 //
104 // Example:
105 // DT_RETURN_MARK_DECL(SomeFunc, int);
106 // JNI_ENTRY(int, SomeFunc, ...)
107 // int return_value = 0;
108 // DT_RETURN_MARK(SomeFunc, int, (const int&)return_value);
109 // foo(CHECK_0)
110 // return_value = 5;
111 // return return_value;
112 // JNI_END
113 #ifndef USDT2
114 #define DT_RETURN_MARK_DECL(name, type) \
115 HS_DTRACE_PROBE_DECL1(hotspot_jni, name##__return, type); \
116 DTRACE_ONLY( \
117 class DTraceReturnProbeMark_##name { \
118 public: \
119 const type& _ret_ref; \
120 DTraceReturnProbeMark_##name(const type& v) : _ret_ref(v) {} \
121 ~DTraceReturnProbeMark_##name() { \
122 HS_DTRACE_PROBE1(hotspot_jni, name##__return, _ret_ref); \
123 } \
124 } \
125 )
126 // Void functions are simpler since there's no return value
127 #define DT_VOID_RETURN_MARK_DECL(name) \
128 HS_DTRACE_PROBE_DECL0(hotspot_jni, name##__return); \
129 DTRACE_ONLY( \
130 class DTraceReturnProbeMark_##name { \
131 public: \
132 ~DTraceReturnProbeMark_##name() { \
133 HS_DTRACE_PROBE0(hotspot_jni, name##__return); \
134 } \
135 } \
136 )
137
138 #else /* USDT2 */
139
140 #define DT_RETURN_MARK_DECL(name, type, probe) \
141 DTRACE_ONLY( \
142 class DTraceReturnProbeMark_##name { \
143 public: \
144 const type& _ret_ref; \
145 DTraceReturnProbeMark_##name(const type& v) : _ret_ref(v) {} \
146 ~DTraceReturnProbeMark_##name() { \
147 probe; \
148 } \
149 } \
150 )
151 // Void functions are simpler since there's no return value
152 #define DT_VOID_RETURN_MARK_DECL(name, probe) \
153 DTRACE_ONLY( \
154 class DTraceReturnProbeMark_##name { \
155 public: \
156 ~DTraceReturnProbeMark_##name() { \
157 probe; \
158 } \
159 } \
160 )
161 #endif /* USDT2 */
162
163 // Place these macros in the function to mark the return. Non-void
164 // functions need the type and address of the return value.
165 #define DT_RETURN_MARK(name, type, ref) \
166 DTRACE_ONLY( DTraceReturnProbeMark_##name dtrace_return_mark(ref) )
167 #define DT_VOID_RETURN_MARK(name) \
168 DTRACE_ONLY( DTraceReturnProbeMark_##name dtrace_return_mark )
169
170
171 // Use these to select distinct code for floating-point vs. non-floating point
172 // situations. Used from within common macros where we need slightly
173 // different behavior for Float/Double
174 #define FP_SELECT_Boolean(intcode, fpcode) intcode
175 #define FP_SELECT_Byte(intcode, fpcode) intcode
176 #define FP_SELECT_Char(intcode, fpcode) intcode
177 #define FP_SELECT_Short(intcode, fpcode) intcode
178 #define FP_SELECT_Object(intcode, fpcode) intcode
179 #define FP_SELECT_Int(intcode, fpcode) intcode
180 #define FP_SELECT_Long(intcode, fpcode) intcode
181 #define FP_SELECT_Float(intcode, fpcode) fpcode
182 #define FP_SELECT_Double(intcode, fpcode) fpcode
183 #define FP_SELECT(TypeName, intcode, fpcode) \
184 FP_SELECT_##TypeName(intcode, fpcode)
185
186 #define COMMA ,
187
188 // Choose DT_RETURN_MARK macros based on the type: float/double -> void
189 // (dtrace doesn't do FP yet)
190 #ifndef USDT2
191 #define DT_RETURN_MARK_DECL_FOR(TypeName, name, type) \
192 FP_SELECT(TypeName, \
193 DT_RETURN_MARK_DECL(name, type), DT_VOID_RETURN_MARK_DECL(name) )
194 #else /* USDT2 */
195 #define DT_RETURN_MARK_DECL_FOR(TypeName, name, type, probe) \
196 FP_SELECT(TypeName, \
197 DT_RETURN_MARK_DECL(name, type, probe), DT_VOID_RETURN_MARK_DECL(name, probe) )
198 #endif /* USDT2 */
199 #define DT_RETURN_MARK_FOR(TypeName, name, type, ref) \
200 FP_SELECT(TypeName, \
201 DT_RETURN_MARK(name, type, ref), DT_VOID_RETURN_MARK(name) )
202
203
204 // out-of-line helpers for class jfieldIDWorkaround:
205
206 bool jfieldIDWorkaround::is_valid_jfieldID(klassOop k, jfieldID id) {
207 if (jfieldIDWorkaround::is_instance_jfieldID(k, id)) {
208 uintptr_t as_uint = (uintptr_t) id;
209 intptr_t offset = raw_instance_offset(id);
210 if (is_checked_jfieldID(id)) {
211 if (!klass_hash_ok(k, id)) {
212 return false;
213 }
214 }
215 return instanceKlass::cast(k)->contains_field_offset(offset);
216 } else {
217 JNIid* result = (JNIid*) id;
218 #ifdef ASSERT
219 return result != NULL && result->is_static_field_id();
220 #else
221 return result != NULL;
222 #endif
223 }
224 }
225
226
227 intptr_t jfieldIDWorkaround::encode_klass_hash(klassOop k, intptr_t offset) {
228 if (offset <= small_offset_mask) {
229 klassOop field_klass = k;
230 klassOop super_klass = Klass::cast(field_klass)->super();
231 // With compressed oops the most super class with nonstatic fields would
232 // be the owner of fields embedded in the header.
233 while (instanceKlass::cast(super_klass)->has_nonstatic_fields() &&
234 instanceKlass::cast(super_klass)->contains_field_offset(offset)) {
235 field_klass = super_klass; // super contains the field also
236 super_klass = Klass::cast(field_klass)->super();
237 }
238 debug_only(No_Safepoint_Verifier nosafepoint;)
239 uintptr_t klass_hash = field_klass->identity_hash();
240 return ((klass_hash & klass_mask) << klass_shift) | checked_mask_in_place;
241 } else {
242 #if 0
243 #ifndef PRODUCT
244 {
245 ResourceMark rm;
246 warning("VerifyJNIFields: long offset %d in %s", offset, Klass::cast(k)->external_name());
247 }
248 #endif
249 #endif
250 return 0;
251 }
252 }
253
254 bool jfieldIDWorkaround::klass_hash_ok(klassOop k, jfieldID id) {
255 uintptr_t as_uint = (uintptr_t) id;
256 intptr_t klass_hash = (as_uint >> klass_shift) & klass_mask;
257 do {
258 debug_only(No_Safepoint_Verifier nosafepoint;)
259 // Could use a non-blocking query for identity_hash here...
260 if ((k->identity_hash() & klass_mask) == klass_hash)
261 return true;
262 k = Klass::cast(k)->super();
263 } while (k != NULL);
264 return false;
265 }
266
267 void jfieldIDWorkaround::verify_instance_jfieldID(klassOop k, jfieldID id) {
268 guarantee(jfieldIDWorkaround::is_instance_jfieldID(k, id), "must be an instance field" );
269 uintptr_t as_uint = (uintptr_t) id;
270 intptr_t offset = raw_instance_offset(id);
271 if (VerifyJNIFields) {
272 if (is_checked_jfieldID(id)) {
273 guarantee(klass_hash_ok(k, id),
274 "Bug in native code: jfieldID class must match object");
275 } else {
276 #if 0
277 #ifndef PRODUCT
278 if (Verbose) {
279 ResourceMark rm;
280 warning("VerifyJNIFields: unverified offset %d for %s", offset, Klass::cast(k)->external_name());
281 }
282 #endif
283 #endif
284 }
285 }
286 guarantee(instanceKlass::cast(k)->contains_field_offset(offset),
287 "Bug in native code: jfieldID offset must address interior of object");
288 }
289
290 // Pick a reasonable higher bound for local capacity requested
291 // for EnsureLocalCapacity and PushLocalFrame. We don't want it too
292 // high because a test (or very unusual application) may try to allocate
293 // that many handles and run out of swap space. An implementation is
294 // permitted to allocate more handles than the ensured capacity, so this
295 // value is set high enough to prevent compatibility problems.
296 const int MAX_REASONABLE_LOCAL_CAPACITY = 4*K;
297
298
299 // Wrapper to trace JNI functions
300
301 #ifdef ASSERT
302 Histogram* JNIHistogram;
303 static volatile jint JNIHistogram_lock = 0;
304
305 class JNITraceWrapper : public StackObj {
306 public:
307 JNITraceWrapper(const char* format, ...) {
308 if (TraceJNICalls) {
309 va_list ap;
310 va_start(ap, format);
311 tty->print("JNI ");
312 tty->vprint_cr(format, ap);
313 va_end(ap);
314 }
315 }
316 };
317
318 class JNIHistogramElement : public HistogramElement {
319 public:
320 JNIHistogramElement(const char* name);
321 };
322
323 JNIHistogramElement::JNIHistogramElement(const char* elementName) {
324 _name = elementName;
325 uintx count = 0;
326
327 while (Atomic::cmpxchg(1, &JNIHistogram_lock, 0) != 0) {
328 while (OrderAccess::load_acquire(&JNIHistogram_lock) != 0) {
329 count +=1;
330 if ( (WarnOnStalledSpinLock > 0)
331 && (count % WarnOnStalledSpinLock == 0)) {
332 warning("JNIHistogram_lock seems to be stalled");
333 }
334 }
335 }
336
337
338 if(JNIHistogram == NULL)
339 JNIHistogram = new Histogram("JNI Call Counts",100);
340
341 JNIHistogram->add_element(this);
342 Atomic::dec(&JNIHistogram_lock);
343 }
344
345 #define JNICountWrapper(arg) \
346 static JNIHistogramElement* e = new JNIHistogramElement(arg); \
347 /* There is a MT-race condition in VC++. So we need to make sure that that e has been initialized */ \
348 if (e != NULL) e->increment_count()
349 #define JNIWrapper(arg) JNICountWrapper(arg); JNITraceWrapper(arg)
350 #else
351 #define JNIWrapper(arg)
352 #endif
353
354
355 // Implementation of JNI entries
356
357 #ifndef USDT2
358 DT_RETURN_MARK_DECL(DefineClass, jclass);
359 #else /* USDT2 */
360 DT_RETURN_MARK_DECL(DefineClass, jclass
361 , HOTSPOT_JNI_DEFINECLASS_RETURN(_ret_ref));
362 #endif /* USDT2 */
363
364 JNI_ENTRY(jclass, jni_DefineClass(JNIEnv *env, const char *name, jobject loaderRef,
365 const jbyte *buf, jsize bufLen))
366 JNIWrapper("DefineClass");
367
368 #ifndef USDT2
369 DTRACE_PROBE5(hotspot_jni, DefineClass__entry,
370 env, name, loaderRef, buf, bufLen);
371 #else /* USDT2 */
372 HOTSPOT_JNI_DEFINECLASS_ENTRY(
373 env, (char*) name, loaderRef, (char*) buf, bufLen);
374 #endif /* USDT2 */
375 jclass cls = NULL;
376 DT_RETURN_MARK(DefineClass, jclass, (const jclass&)cls);
377
378 // Since exceptions can be thrown, class initialization can take place
379 // if name is NULL no check for class name in .class stream has to be made.
380 if (name != NULL) {
381 const int str_len = (int)strlen(name);
382 if (str_len > Symbol::max_length()) {
383 // It's impossible to create this class; the name cannot fit
384 // into the constant pool.
385 THROW_MSG_0(vmSymbols::java_lang_NoClassDefFoundError(), name);
386 }
387 }
388 TempNewSymbol class_name = SymbolTable::new_symbol(name, THREAD);
389
390 ResourceMark rm(THREAD);
391 ClassFileStream st((u1*) buf, bufLen, NULL);
392 Handle class_loader (THREAD, JNIHandles::resolve(loaderRef));
393
394 if (UsePerfData && !class_loader.is_null()) {
395 // check whether the current caller thread holds the lock or not.
396 // If not, increment the corresponding counter
397 if (ObjectSynchronizer::
398 query_lock_ownership((JavaThread*)THREAD, class_loader) !=
399 ObjectSynchronizer::owner_self) {
400 ClassLoader::sync_JNIDefineClassLockFreeCounter()->inc();
401 }
402 }
403 klassOop k = SystemDictionary::resolve_from_stream(class_name, class_loader,
404 Handle(), &st, true,
405 CHECK_NULL);
406
407 if (TraceClassResolution && k != NULL) {
408 trace_class_resolution(k);
409 }
410
411 cls = (jclass)JNIHandles::make_local(
412 env, Klass::cast(k)->java_mirror());
413 return cls;
414 JNI_END
415
416
417
418 static bool first_time_FindClass = true;
419
420 #ifndef USDT2
421 DT_RETURN_MARK_DECL(FindClass, jclass);
422 #else /* USDT2 */
423 DT_RETURN_MARK_DECL(FindClass, jclass
424 , HOTSPOT_JNI_FINDCLASS_RETURN(_ret_ref));
425 #endif /* USDT2 */
426
427 JNI_ENTRY(jclass, jni_FindClass(JNIEnv *env, const char *name))
428 JNIWrapper("FindClass");
429 #ifndef USDT2
430 DTRACE_PROBE2(hotspot_jni, FindClass__entry, env, name);
431 #else /* USDT2 */
432 HOTSPOT_JNI_FINDCLASS_ENTRY(
433 env, (char *)name);
434 #endif /* USDT2 */
435
436 jclass result = NULL;
437 DT_RETURN_MARK(FindClass, jclass, (const jclass&)result);
438
439 // Remember if we are the first invocation of jni_FindClass
440 bool first_time = first_time_FindClass;
441 first_time_FindClass = false;
442
443 // Sanity check the name: it cannot be null or larger than the maximum size
444 // name we can fit in the constant pool.
445 if (name == NULL || (int)strlen(name) > Symbol::max_length()) {
446 THROW_MSG_0(vmSymbols::java_lang_NoClassDefFoundError(), name);
447 }
448
449 //%note jni_3
450 Handle loader;
451 Handle protection_domain;
452 // Find calling class
453 instanceKlassHandle k (THREAD, thread->security_get_caller_class(0));
454 if (k.not_null()) {
455 loader = Handle(THREAD, k->class_loader());
456 // Special handling to make sure JNI_OnLoad and JNI_OnUnload are executed
457 // in the correct class context.
458 if (loader.is_null() &&
459 k->name() == vmSymbols::java_lang_ClassLoader_NativeLibrary()) {
460 JavaValue result(T_OBJECT);
461 JavaCalls::call_static(&result, k,
462 vmSymbols::getFromClass_name(),
463 vmSymbols::void_class_signature(),
464 thread);
465 if (HAS_PENDING_EXCEPTION) {
466 Handle ex(thread, thread->pending_exception());
467 CLEAR_PENDING_EXCEPTION;
468 THROW_HANDLE_0(ex);
469 }
470 oop mirror = (oop) result.get_jobject();
471 loader = Handle(THREAD,
472 instanceKlass::cast(java_lang_Class::as_klassOop(mirror))->class_loader());
473 protection_domain = Handle(THREAD,
474 instanceKlass::cast(java_lang_Class::as_klassOop(mirror))->protection_domain());
475 }
476 } else {
477 // We call ClassLoader.getSystemClassLoader to obtain the system class loader.
478 loader = Handle(THREAD, SystemDictionary::java_system_loader());
479 }
480
481 TempNewSymbol sym = SymbolTable::new_symbol(name, CHECK_NULL);
482 result = find_class_from_class_loader(env, sym, true, loader,
483 protection_domain, true, thread);
484
485 if (TraceClassResolution && result != NULL) {
486 trace_class_resolution(java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(result)));
487 }
488
489 // If we were the first invocation of jni_FindClass, we enable compilation again
490 // rather than just allowing invocation counter to overflow and decay.
491 // Controlled by flag DelayCompilationDuringStartup.
492 if (first_time && !CompileTheWorld)
493 CompilationPolicy::completed_vm_startup();
494
495 return result;
496 JNI_END
497
498 #ifndef USDT2
499 DT_RETURN_MARK_DECL(FromReflectedMethod, jmethodID);
500 #else /* USDT2 */
501 DT_RETURN_MARK_DECL(FromReflectedMethod, jmethodID
502 , HOTSPOT_JNI_FROMREFLECTEDMETHOD_RETURN((uintptr_t)_ret_ref));
503 #endif /* USDT2 */
504
505 JNI_ENTRY(jmethodID, jni_FromReflectedMethod(JNIEnv *env, jobject method))
506 JNIWrapper("FromReflectedMethod");
507 #ifndef USDT2
508 DTRACE_PROBE2(hotspot_jni, FromReflectedMethod__entry, env, method);
509 #else /* USDT2 */
510 HOTSPOT_JNI_FROMREFLECTEDMETHOD_ENTRY(
511 env, method);
512 #endif /* USDT2 */
513 jmethodID ret = NULL;
514 DT_RETURN_MARK(FromReflectedMethod, jmethodID, (const jmethodID&)ret);
515
516 // method is a handle to a java.lang.reflect.Method object
517 oop reflected = JNIHandles::resolve_non_null(method);
518 oop mirror = NULL;
519 int slot = 0;
520
521 if (reflected->klass() == SystemDictionary::reflect_Constructor_klass()) {
522 mirror = java_lang_reflect_Constructor::clazz(reflected);
523 slot = java_lang_reflect_Constructor::slot(reflected);
524 } else {
525 assert(reflected->klass() == SystemDictionary::reflect_Method_klass(), "wrong type");
526 mirror = java_lang_reflect_Method::clazz(reflected);
527 slot = java_lang_reflect_Method::slot(reflected);
528 }
529 klassOop k = java_lang_Class::as_klassOop(mirror);
530
531 KlassHandle k1(THREAD, k);
532 // Make sure class is initialized before handing id's out to methods
533 Klass::cast(k1())->initialize(CHECK_NULL);
534 methodOop m = instanceKlass::cast(k1())->method_with_idnum(slot);
535 ret = m==NULL? NULL : m->jmethod_id(); // return NULL if reflected method deleted
536 return ret;
537 JNI_END
538
539 #ifndef USDT2
540 DT_RETURN_MARK_DECL(FromReflectedField, jfieldID);
541 #else /* USDT2 */
542 DT_RETURN_MARK_DECL(FromReflectedField, jfieldID
543 , HOTSPOT_JNI_FROMREFLECTEDFIELD_RETURN((uintptr_t)_ret_ref));
544 #endif /* USDT2 */
545
546 JNI_ENTRY(jfieldID, jni_FromReflectedField(JNIEnv *env, jobject field))
547 JNIWrapper("FromReflectedField");
548 #ifndef USDT2
549 DTRACE_PROBE2(hotspot_jni, FromReflectedField__entry, env, field);
550 #else /* USDT2 */
551 HOTSPOT_JNI_FROMREFLECTEDFIELD_ENTRY(
552 env, field);
553 #endif /* USDT2 */
554 jfieldID ret = NULL;
555 DT_RETURN_MARK(FromReflectedField, jfieldID, (const jfieldID&)ret);
556
557 // field is a handle to a java.lang.reflect.Field object
558 oop reflected = JNIHandles::resolve_non_null(field);
559 oop mirror = java_lang_reflect_Field::clazz(reflected);
560 klassOop k = java_lang_Class::as_klassOop(mirror);
561 int slot = java_lang_reflect_Field::slot(reflected);
562 int modifiers = java_lang_reflect_Field::modifiers(reflected);
563
564 KlassHandle k1(THREAD, k);
565 // Make sure class is initialized before handing id's out to fields
566 Klass::cast(k1())->initialize(CHECK_NULL);
567
568 // First check if this is a static field
569 if (modifiers & JVM_ACC_STATIC) {
570 intptr_t offset = instanceKlass::cast(k1())->field_offset( slot );
571 JNIid* id = instanceKlass::cast(k1())->jni_id_for(offset);
572 assert(id != NULL, "corrupt Field object");
573 debug_only(id->set_is_static_field_id();)
574 // A jfieldID for a static field is a JNIid specifying the field holder and the offset within the klassOop
575 ret = jfieldIDWorkaround::to_static_jfieldID(id);
576 return ret;
577 }
578
579 // The slot is the index of the field description in the field-array
580 // The jfieldID is the offset of the field within the object
581 // It may also have hash bits for k, if VerifyJNIFields is turned on.
582 intptr_t offset = instanceKlass::cast(k1())->field_offset( slot );
583 assert(instanceKlass::cast(k1())->contains_field_offset(offset), "stay within object");
584 ret = jfieldIDWorkaround::to_instance_jfieldID(k1(), offset);
585 return ret;
586 JNI_END
587
588 #ifndef USDT2
589 DT_RETURN_MARK_DECL(ToReflectedMethod, jobject);
590 #else /* USDT2 */
591 DT_RETURN_MARK_DECL(ToReflectedMethod, jobject
592 , HOTSPOT_JNI_TOREFLECTEDMETHOD_RETURN(_ret_ref));
593 #endif /* USDT2 */
594
595 JNI_ENTRY(jobject, jni_ToReflectedMethod(JNIEnv *env, jclass cls, jmethodID method_id, jboolean isStatic))
596 JNIWrapper("ToReflectedMethod");
597 #ifndef USDT2
598 DTRACE_PROBE4(hotspot_jni, ToReflectedMethod__entry, env, cls, method_id, isStatic);
599 #else /* USDT2 */
600 HOTSPOT_JNI_TOREFLECTEDMETHOD_ENTRY(
601 env, cls, (uintptr_t) method_id, isStatic);
602 #endif /* USDT2 */
603 jobject ret = NULL;
604 DT_RETURN_MARK(ToReflectedMethod, jobject, (const jobject&)ret);
605
606 methodHandle m (THREAD, JNIHandles::resolve_jmethod_id(method_id));
607 assert(m->is_static() == (isStatic != 0), "jni_ToReflectedMethod access flags doesn't match");
608 oop reflection_method;
609 if (m->is_initializer()) {
610 reflection_method = Reflection::new_constructor(m, CHECK_NULL);
611 } else {
612 reflection_method = Reflection::new_method(m, UseNewReflection, false, CHECK_NULL);
613 }
614 ret = JNIHandles::make_local(env, reflection_method);
615 return ret;
616 JNI_END
617
618 #ifndef USDT2
619 DT_RETURN_MARK_DECL(GetSuperclass, jclass);
620 #else /* USDT2 */
621 DT_RETURN_MARK_DECL(GetSuperclass, jclass
622 , HOTSPOT_JNI_GETSUPERCLASS_RETURN(_ret_ref));
623 #endif /* USDT2 */
624
625 JNI_ENTRY(jclass, jni_GetSuperclass(JNIEnv *env, jclass sub))
626 JNIWrapper("GetSuperclass");
627 #ifndef USDT2
628 DTRACE_PROBE2(hotspot_jni, GetSuperclass__entry, env, sub);
629 #else /* USDT2 */
630 HOTSPOT_JNI_GETSUPERCLASS_ENTRY(
631 env, sub);
632 #endif /* USDT2 */
633 jclass obj = NULL;
634 DT_RETURN_MARK(GetSuperclass, jclass, (const jclass&)obj);
635
636 oop mirror = JNIHandles::resolve_non_null(sub);
637 // primitive classes return NULL
638 if (java_lang_Class::is_primitive(mirror)) return NULL;
639
640 // Rules of Class.getSuperClass as implemented by KLass::java_super:
641 // arrays return Object
642 // interfaces return NULL
643 // proper classes return Klass::super()
644 klassOop k = java_lang_Class::as_klassOop(mirror);
645 if (Klass::cast(k)->is_interface()) return NULL;
646
647 // return mirror for superclass
648 klassOop super = Klass::cast(k)->java_super();
649 // super2 is the value computed by the compiler's getSuperClass intrinsic:
650 debug_only(klassOop super2 = ( Klass::cast(k)->oop_is_javaArray()
651 ? SystemDictionary::Object_klass()
652 : Klass::cast(k)->super() ) );
653 assert(super == super2,
654 "java_super computation depends on interface, array, other super");
655 obj = (super == NULL) ? NULL : (jclass) JNIHandles::make_local(Klass::cast(super)->java_mirror());
656 return obj;
657 JNI_END
658
659 JNI_QUICK_ENTRY(jboolean, jni_IsAssignableFrom(JNIEnv *env, jclass sub, jclass super))
660 JNIWrapper("IsSubclassOf");
661 #ifndef USDT2
662 DTRACE_PROBE3(hotspot_jni, IsAssignableFrom__entry, env, sub, super);
663 #else /* USDT2 */
664 HOTSPOT_JNI_ISASSIGNABLEFROM_ENTRY(
665 env, sub, super);
666 #endif /* USDT2 */
667 oop sub_mirror = JNIHandles::resolve_non_null(sub);
668 oop super_mirror = JNIHandles::resolve_non_null(super);
669 if (java_lang_Class::is_primitive(sub_mirror) ||
670 java_lang_Class::is_primitive(super_mirror)) {
671 jboolean ret = (sub_mirror == super_mirror);
672 #ifndef USDT2
673 DTRACE_PROBE1(hotspot_jni, IsAssignableFrom__return, ret);
674 #else /* USDT2 */
675 HOTSPOT_JNI_ISASSIGNABLEFROM_RETURN(
676 ret);
677 #endif /* USDT2 */
678 return ret;
679 }
680 klassOop sub_klass = java_lang_Class::as_klassOop(sub_mirror);
681 klassOop super_klass = java_lang_Class::as_klassOop(super_mirror);
682 assert(sub_klass != NULL && super_klass != NULL, "invalid arguments to jni_IsAssignableFrom");
683 jboolean ret = Klass::cast(sub_klass)->is_subtype_of(super_klass) ?
684 JNI_TRUE : JNI_FALSE;
685 #ifndef USDT2
686 DTRACE_PROBE1(hotspot_jni, IsAssignableFrom__return, ret);
687 #else /* USDT2 */
688 HOTSPOT_JNI_ISASSIGNABLEFROM_RETURN(
689 ret);
690 #endif /* USDT2 */
691 return ret;
692 JNI_END
693
694 #ifndef USDT2
695 DT_RETURN_MARK_DECL(Throw, jint);
696 #else /* USDT2 */
697 DT_RETURN_MARK_DECL(Throw, jint
698 , HOTSPOT_JNI_THROW_RETURN(_ret_ref));
699 #endif /* USDT2 */
700
701 JNI_ENTRY(jint, jni_Throw(JNIEnv *env, jthrowable obj))
702 JNIWrapper("Throw");
703 #ifndef USDT2
704 DTRACE_PROBE2(hotspot_jni, Throw__entry, env, obj);
705 #else /* USDT2 */
706 HOTSPOT_JNI_THROW_ENTRY(
707 env, obj);
708 #endif /* USDT2 */
709 jint ret = JNI_OK;
710 DT_RETURN_MARK(Throw, jint, (const jint&)ret);
711
712 THROW_OOP_(JNIHandles::resolve(obj), JNI_OK);
713 ShouldNotReachHere();
714 JNI_END
715
716 #ifndef USDT2
717 DT_RETURN_MARK_DECL(ThrowNew, jint);
718 #else /* USDT2 */
719 DT_RETURN_MARK_DECL(ThrowNew, jint
720 , HOTSPOT_JNI_THROWNEW_RETURN(_ret_ref));
721 #endif /* USDT2 */
722
723 JNI_ENTRY(jint, jni_ThrowNew(JNIEnv *env, jclass clazz, const char *message))
724 JNIWrapper("ThrowNew");
725 #ifndef USDT2
726 DTRACE_PROBE3(hotspot_jni, ThrowNew__entry, env, clazz, message);
727 #else /* USDT2 */
728 HOTSPOT_JNI_THROWNEW_ENTRY(
729 env, clazz, (char *) message);
730 #endif /* USDT2 */
731 jint ret = JNI_OK;
732 DT_RETURN_MARK(ThrowNew, jint, (const jint&)ret);
733
734 instanceKlass* k = instanceKlass::cast(java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(clazz)));
735 Symbol* name = k->name();
736 Handle class_loader (THREAD, k->class_loader());
737 Handle protection_domain (THREAD, k->protection_domain());
738 THROW_MSG_LOADER_(name, (char *)message, class_loader, protection_domain, JNI_OK);
739 ShouldNotReachHere();
740 JNI_END
741
742
743 // JNI functions only transform a pending async exception to a synchronous
744 // exception in ExceptionOccurred and ExceptionCheck calls, since
745 // delivering an async exception in other places won't change the native
746 // code's control flow and would be harmful when native code further calls
747 // JNI functions with a pending exception. Async exception is also checked
748 // during the call, so ExceptionOccurred/ExceptionCheck won't return
749 // false but deliver the async exception at the very end during
750 // state transition.
751
752 static void jni_check_async_exceptions(JavaThread *thread) {
753 assert(thread == Thread::current(), "must be itself");
754 thread->check_and_handle_async_exceptions();
755 }
756
757 JNI_ENTRY_NO_PRESERVE(jthrowable, jni_ExceptionOccurred(JNIEnv *env))
758 JNIWrapper("ExceptionOccurred");
759 #ifndef USDT2
760 DTRACE_PROBE1(hotspot_jni, ExceptionOccurred__entry, env);
761 #else /* USDT2 */
762 HOTSPOT_JNI_EXCEPTIONOCCURRED_ENTRY(
763 env);
764 #endif /* USDT2 */
765 jni_check_async_exceptions(thread);
766 oop exception = thread->pending_exception();
767 jthrowable ret = (jthrowable) JNIHandles::make_local(env, exception);
768 #ifndef USDT2
769 DTRACE_PROBE1(hotspot_jni, ExceptionOccurred__return, ret);
770 #else /* USDT2 */
771 HOTSPOT_JNI_EXCEPTIONOCCURRED_RETURN(
772 ret);
773 #endif /* USDT2 */
774 return ret;
775 JNI_END
776
777
778 JNI_ENTRY_NO_PRESERVE(void, jni_ExceptionDescribe(JNIEnv *env))
779 JNIWrapper("ExceptionDescribe");
780 #ifndef USDT2
781 DTRACE_PROBE1(hotspot_jni, ExceptionDescribe__entry, env);
782 #else /* USDT2 */
783 HOTSPOT_JNI_EXCEPTIONDESCRIBE_ENTRY(
784 env);
785 #endif /* USDT2 */
786 if (thread->has_pending_exception()) {
787 Handle ex(thread, thread->pending_exception());
788 thread->clear_pending_exception();
789 if (ex->is_a(SystemDictionary::ThreadDeath_klass())) {
790 // Don't print anything if we are being killed.
791 } else {
792 jio_fprintf(defaultStream::error_stream(), "Exception ");
793 if (thread != NULL && thread->threadObj() != NULL) {
794 ResourceMark rm(THREAD);
795 jio_fprintf(defaultStream::error_stream(),
796 "in thread \"%s\" ", thread->get_thread_name());
797 }
798 if (ex->is_a(SystemDictionary::Throwable_klass())) {
799 JavaValue result(T_VOID);
800 JavaCalls::call_virtual(&result,
801 ex,
802 KlassHandle(THREAD,
803 SystemDictionary::Throwable_klass()),
804 vmSymbols::printStackTrace_name(),
805 vmSymbols::void_method_signature(),
806 THREAD);
807 // If an exception is thrown in the call it gets thrown away. Not much
808 // we can do with it. The native code that calls this, does not check
809 // for the exception - hence, it might still be in the thread when DestroyVM gets
810 // called, potentially causing a few asserts to trigger - since no pending exception
811 // is expected.
812 CLEAR_PENDING_EXCEPTION;
813 } else {
814 ResourceMark rm(THREAD);
815 jio_fprintf(defaultStream::error_stream(),
816 ". Uncaught exception of type %s.",
817 Klass::cast(ex->klass())->external_name());
818 }
819 }
820 }
821 #ifndef USDT2
822 DTRACE_PROBE(hotspot_jni, ExceptionDescribe__return);
823 #else /* USDT2 */
824 HOTSPOT_JNI_EXCEPTIONDESCRIBE_RETURN(
825 );
826 #endif /* USDT2 */
827 JNI_END
828
829
830 JNI_QUICK_ENTRY(void, jni_ExceptionClear(JNIEnv *env))
831 JNIWrapper("ExceptionClear");
832 #ifndef USDT2
833 DTRACE_PROBE1(hotspot_jni, ExceptionClear__entry, env);
834 #else /* USDT2 */
835 HOTSPOT_JNI_EXCEPTIONCLEAR_ENTRY(
836 env);
837 #endif /* USDT2 */
838
839 // The jni code might be using this API to clear java thrown exception.
840 // So just mark jvmti thread exception state as exception caught.
841 JvmtiThreadState *state = JavaThread::current()->jvmti_thread_state();
842 if (state != NULL && state->is_exception_detected()) {
843 state->set_exception_caught();
844 }
845 thread->clear_pending_exception();
846 #ifndef USDT2
847 DTRACE_PROBE(hotspot_jni, ExceptionClear__return);
848 #else /* USDT2 */
849 HOTSPOT_JNI_EXCEPTIONCLEAR_RETURN(
850 );
851 #endif /* USDT2 */
852 JNI_END
853
854
855 JNI_ENTRY(void, jni_FatalError(JNIEnv *env, const char *msg))
856 JNIWrapper("FatalError");
857 #ifndef USDT2
858 DTRACE_PROBE2(hotspot_jni, FatalError__entry, env, msg);
859 #else /* USDT2 */
860 HOTSPOT_JNI_FATALERROR_ENTRY(
861 env, (char *) msg);
862 #endif /* USDT2 */
863 tty->print_cr("FATAL ERROR in native method: %s", msg);
864 thread->print_stack();
865 os::abort(); // Dump core and abort
866 JNI_END
867
868
869 JNI_ENTRY(jint, jni_PushLocalFrame(JNIEnv *env, jint capacity))
870 JNIWrapper("PushLocalFrame");
871 #ifndef USDT2
872 DTRACE_PROBE2(hotspot_jni, PushLocalFrame__entry, env, capacity);
873 #else /* USDT2 */
874 HOTSPOT_JNI_PUSHLOCALFRAME_ENTRY(
875 env, capacity);
876 #endif /* USDT2 */
877 //%note jni_11
878 if (capacity < 0 && capacity > MAX_REASONABLE_LOCAL_CAPACITY) {
879 #ifndef USDT2
880 DTRACE_PROBE1(hotspot_jni, PushLocalFrame__return, JNI_ERR);
881 #else /* USDT2 */
882 HOTSPOT_JNI_PUSHLOCALFRAME_RETURN(
883 (uint32_t)JNI_ERR);
884 #endif /* USDT2 */
885 return JNI_ERR;
886 }
887 JNIHandleBlock* old_handles = thread->active_handles();
888 JNIHandleBlock* new_handles = JNIHandleBlock::allocate_block(thread);
889 assert(new_handles != NULL, "should not be NULL");
890 new_handles->set_pop_frame_link(old_handles);
891 thread->set_active_handles(new_handles);
892 jint ret = JNI_OK;
893 #ifndef USDT2
894 DTRACE_PROBE1(hotspot_jni, PushLocalFrame__return, ret);
895 #else /* USDT2 */
896 HOTSPOT_JNI_PUSHLOCALFRAME_RETURN(
897 ret);
898 #endif /* USDT2 */
899 return ret;
900 JNI_END
901
902
903 JNI_ENTRY(jobject, jni_PopLocalFrame(JNIEnv *env, jobject result))
904 JNIWrapper("PopLocalFrame");
905 #ifndef USDT2
906 DTRACE_PROBE2(hotspot_jni, PopLocalFrame__entry, env, result);
907 #else /* USDT2 */
908 HOTSPOT_JNI_POPLOCALFRAME_ENTRY(
909 env, result);
910 #endif /* USDT2 */
911 //%note jni_11
912 Handle result_handle(thread, JNIHandles::resolve(result));
913 JNIHandleBlock* old_handles = thread->active_handles();
914 JNIHandleBlock* new_handles = old_handles->pop_frame_link();
915 if (new_handles != NULL) {
916 // As a sanity check we only release the handle blocks if the pop_frame_link is not NULL.
917 // This way code will still work if PopLocalFrame is called without a corresponding
918 // PushLocalFrame call. Note that we set the pop_frame_link to NULL explicitly, otherwise
919 // the release_block call will release the blocks.
920 thread->set_active_handles(new_handles);
921 old_handles->set_pop_frame_link(NULL); // clear link we won't release new_handles below
922 JNIHandleBlock::release_block(old_handles, thread); // may block
923 result = JNIHandles::make_local(thread, result_handle());
924 }
925 #ifndef USDT2
926 DTRACE_PROBE1(hotspot_jni, PopLocalFrame__return, result);
927 #else /* USDT2 */
928 HOTSPOT_JNI_POPLOCALFRAME_RETURN(
929 result);
930 #endif /* USDT2 */
931 return result;
932 JNI_END
933
934
935 JNI_ENTRY(jobject, jni_NewGlobalRef(JNIEnv *env, jobject ref))
936 JNIWrapper("NewGlobalRef");
937 #ifndef USDT2
938 DTRACE_PROBE2(hotspot_jni, NewGlobalRef__entry, env, ref);
939 #else /* USDT2 */
940 HOTSPOT_JNI_NEWGLOBALREF_ENTRY(
941 env, ref);
942 #endif /* USDT2 */
943 Handle ref_handle(thread, JNIHandles::resolve(ref));
944 jobject ret = JNIHandles::make_global(ref_handle);
945 #ifndef USDT2
946 DTRACE_PROBE1(hotspot_jni, NewGlobalRef__return, ret);
947 #else /* USDT2 */
948 HOTSPOT_JNI_NEWGLOBALREF_RETURN(
949 ret);
950 #endif /* USDT2 */
951 return ret;
952 JNI_END
953
954 // Must be JNI_ENTRY (with HandleMark)
955 JNI_ENTRY_NO_PRESERVE(void, jni_DeleteGlobalRef(JNIEnv *env, jobject ref))
956 JNIWrapper("DeleteGlobalRef");
957 #ifndef USDT2
958 DTRACE_PROBE2(hotspot_jni, DeleteGlobalRef__entry, env, ref);
959 #else /* USDT2 */
960 HOTSPOT_JNI_DELETEGLOBALREF_ENTRY(
961 env, ref);
962 #endif /* USDT2 */
963 JNIHandles::destroy_global(ref);
964 #ifndef USDT2
965 DTRACE_PROBE(hotspot_jni, DeleteGlobalRef__return);
966 #else /* USDT2 */
967 HOTSPOT_JNI_DELETEGLOBALREF_RETURN(
968 );
969 #endif /* USDT2 */
970 JNI_END
971
972 JNI_QUICK_ENTRY(void, jni_DeleteLocalRef(JNIEnv *env, jobject obj))
973 JNIWrapper("DeleteLocalRef");
974 #ifndef USDT2
975 DTRACE_PROBE2(hotspot_jni, DeleteLocalRef__entry, env, obj);
976 #else /* USDT2 */
977 HOTSPOT_JNI_DELETELOCALREF_ENTRY(
978 env, obj);
979 #endif /* USDT2 */
980 JNIHandles::destroy_local(obj);
981 #ifndef USDT2
982 DTRACE_PROBE(hotspot_jni, DeleteLocalRef__return);
983 #else /* USDT2 */
984 HOTSPOT_JNI_DELETELOCALREF_RETURN(
985 );
986 #endif /* USDT2 */
987 JNI_END
988
989 JNI_QUICK_ENTRY(jboolean, jni_IsSameObject(JNIEnv *env, jobject r1, jobject r2))
990 JNIWrapper("IsSameObject");
991 #ifndef USDT2
992 DTRACE_PROBE3(hotspot_jni, IsSameObject__entry, env, r1, r2);
993 #else /* USDT2 */
994 HOTSPOT_JNI_ISSAMEOBJECT_ENTRY(
995 env, r1, r2);
996 #endif /* USDT2 */
997 oop a = JNIHandles::resolve(r1);
998 oop b = JNIHandles::resolve(r2);
999 jboolean ret = (a == b) ? JNI_TRUE : JNI_FALSE;
1000 #ifndef USDT2
1001 DTRACE_PROBE1(hotspot_jni, IsSameObject__return, ret);
1002 #else /* USDT2 */
1003 HOTSPOT_JNI_ISSAMEOBJECT_RETURN(
1004 ret);
1005 #endif /* USDT2 */
1006 return ret;
1007 JNI_END
1008
1009
1010 JNI_ENTRY(jobject, jni_NewLocalRef(JNIEnv *env, jobject ref))
1011 JNIWrapper("NewLocalRef");
1012 #ifndef USDT2
1013 DTRACE_PROBE2(hotspot_jni, NewLocalRef__entry, env, ref);
1014 #else /* USDT2 */
1015 HOTSPOT_JNI_NEWLOCALREF_ENTRY(
1016 env, ref);
1017 #endif /* USDT2 */
1018 jobject ret = JNIHandles::make_local(env, JNIHandles::resolve(ref));
1019 #ifndef USDT2
1020 DTRACE_PROBE1(hotspot_jni, NewLocalRef__return, ret);
1021 #else /* USDT2 */
1022 HOTSPOT_JNI_NEWLOCALREF_RETURN(
1023 ret);
1024 #endif /* USDT2 */
1025 return ret;
1026 JNI_END
1027
1028 JNI_LEAF(jint, jni_EnsureLocalCapacity(JNIEnv *env, jint capacity))
1029 JNIWrapper("EnsureLocalCapacity");
1030 #ifndef USDT2
1031 DTRACE_PROBE2(hotspot_jni, EnsureLocalCapacity__entry, env, capacity);
1032 #else /* USDT2 */
1033 HOTSPOT_JNI_ENSURELOCALCAPACITY_ENTRY(
1034 env, capacity);
1035 #endif /* USDT2 */
1036 jint ret;
1037 if (capacity >= 0 && capacity <= MAX_REASONABLE_LOCAL_CAPACITY) {
1038 ret = JNI_OK;
1039 } else {
1040 ret = JNI_ERR;
1041 }
1042 #ifndef USDT2
1043 DTRACE_PROBE1(hotspot_jni, EnsureLocalCapacity__return, ret);
1044 #else /* USDT2 */
1045 HOTSPOT_JNI_ENSURELOCALCAPACITY_RETURN(
1046 ret);
1047 #endif /* USDT2 */
1048 return ret;
1049 JNI_END
1050
1051 // Return the Handle Type
1052 JNI_LEAF(jobjectRefType, jni_GetObjectRefType(JNIEnv *env, jobject obj))
1053 JNIWrapper("GetObjectRefType");
1054 #ifndef USDT2
1055 DTRACE_PROBE2(hotspot_jni, GetObjectRefType__entry, env, obj);
1056 #else /* USDT2 */
1057 HOTSPOT_JNI_GETOBJECTREFTYPE_ENTRY(
1058 env, obj);
1059 #endif /* USDT2 */
1060 jobjectRefType ret;
1061 if (JNIHandles::is_local_handle(thread, obj) ||
1062 JNIHandles::is_frame_handle(thread, obj))
1063 ret = JNILocalRefType;
1064 else if (JNIHandles::is_global_handle(obj))
1065 ret = JNIGlobalRefType;
1066 else if (JNIHandles::is_weak_global_handle(obj))
1067 ret = JNIWeakGlobalRefType;
1068 else
1069 ret = JNIInvalidRefType;
1070 #ifndef USDT2
1071 DTRACE_PROBE1(hotspot_jni, GetObjectRefType__return, ret);
1072 #else /* USDT2 */
1073 HOTSPOT_JNI_GETOBJECTREFTYPE_RETURN(
1074 (void *) ret);
1075 #endif /* USDT2 */
1076 return ret;
1077 JNI_END
1078
1079
1080 class JNI_ArgumentPusher : public SignatureIterator {
1081 protected:
1082 JavaCallArguments* _arguments;
1083
1084 virtual void get_bool () = 0;
1085 virtual void get_char () = 0;
1086 virtual void get_short () = 0;
1087 virtual void get_byte () = 0;
1088 virtual void get_int () = 0;
1089 virtual void get_long () = 0;
1090 virtual void get_float () = 0;
1091 virtual void get_double () = 0;
1092 virtual void get_object () = 0;
1093
1094 JNI_ArgumentPusher(Symbol* signature) : SignatureIterator(signature) {
1095 this->_return_type = T_ILLEGAL;
1096 _arguments = NULL;
1097 }
1098
1099 public:
1100 virtual void iterate( uint64_t fingerprint ) = 0;
1101
1102 void set_java_argument_object(JavaCallArguments *arguments) { _arguments = arguments; }
1103
1104 inline void do_bool() { if (!is_return_type()) get_bool(); }
1105 inline void do_char() { if (!is_return_type()) get_char(); }
1106 inline void do_short() { if (!is_return_type()) get_short(); }
1107 inline void do_byte() { if (!is_return_type()) get_byte(); }
1108 inline void do_int() { if (!is_return_type()) get_int(); }
1109 inline void do_long() { if (!is_return_type()) get_long(); }
1110 inline void do_float() { if (!is_return_type()) get_float(); }
1111 inline void do_double() { if (!is_return_type()) get_double(); }
1112 inline void do_object(int begin, int end) { if (!is_return_type()) get_object(); }
1113 inline void do_array(int begin, int end) { if (!is_return_type()) get_object(); } // do_array uses get_object -- there is no get_array
1114 inline void do_void() { }
1115
1116 JavaCallArguments* arguments() { return _arguments; }
1117 void push_receiver(Handle h) { _arguments->push_oop(h); }
1118 };
1119
1120
1121 class JNI_ArgumentPusherVaArg : public JNI_ArgumentPusher {
1122 protected:
1123 va_list _ap;
1124
1125 inline void get_bool() { _arguments->push_int(va_arg(_ap, jint)); } // bool is coerced to int when using va_arg
1126 inline void get_char() { _arguments->push_int(va_arg(_ap, jint)); } // char is coerced to int when using va_arg
1127 inline void get_short() { _arguments->push_int(va_arg(_ap, jint)); } // short is coerced to int when using va_arg
1128 inline void get_byte() { _arguments->push_int(va_arg(_ap, jint)); } // byte is coerced to int when using va_arg
1129 inline void get_int() { _arguments->push_int(va_arg(_ap, jint)); }
1130
1131 // each of these paths is exercized by the various jck Call[Static,Nonvirtual,][Void,Int,..]Method[A,V,] tests
1132
1133 inline void get_long() { _arguments->push_long(va_arg(_ap, jlong)); }
1134 inline void get_float() { _arguments->push_float((jfloat)va_arg(_ap, jdouble)); } // float is coerced to double w/ va_arg
1135 inline void get_double() { _arguments->push_double(va_arg(_ap, jdouble)); }
1136 inline void get_object() { jobject l = va_arg(_ap, jobject);
1137 _arguments->push_oop(Handle((oop *)l, false)); }
1138
1139 inline void set_ap(va_list rap) {
1140 #ifdef va_copy
1141 va_copy(_ap, rap);
1142 #elif defined (__va_copy)
1143 __va_copy(_ap, rap);
1144 #else
1145 _ap = rap;
1146 #endif
1147 }
1148
1149 public:
1150 JNI_ArgumentPusherVaArg(Symbol* signature, va_list rap)
1151 : JNI_ArgumentPusher(signature) {
1152 set_ap(rap);
1153 }
1154 JNI_ArgumentPusherVaArg(jmethodID method_id, va_list rap)
1155 : JNI_ArgumentPusher(JNIHandles::resolve_jmethod_id(method_id)->signature()) {
1156 set_ap(rap);
1157 }
1158
1159 // Optimized path if we have the bitvector form of signature
1160 void iterate( uint64_t fingerprint ) {
1161 if ( fingerprint == UCONST64(-1) ) SignatureIterator::iterate();// Must be too many arguments
1162 else {
1163 _return_type = (BasicType)((fingerprint >> static_feature_size) &
1164 result_feature_mask);
1165
1166 assert(fingerprint, "Fingerprint should not be 0");
1167 fingerprint = fingerprint >> (static_feature_size + result_feature_size);
1168 while ( 1 ) {
1169 switch ( fingerprint & parameter_feature_mask ) {
1170 case bool_parm:
1171 case char_parm:
1172 case short_parm:
1173 case byte_parm:
1174 case int_parm:
1175 get_int();
1176 break;
1177 case obj_parm:
1178 get_object();
1179 break;
1180 case long_parm:
1181 get_long();
1182 break;
1183 case float_parm:
1184 get_float();
1185 break;
1186 case double_parm:
1187 get_double();
1188 break;
1189 case done_parm:
1190 return;
1191 break;
1192 default:
1193 ShouldNotReachHere();
1194 break;
1195 }
1196 fingerprint >>= parameter_feature_size;
1197 }
1198 }
1199 }
1200 };
1201
1202
1203 class JNI_ArgumentPusherArray : public JNI_ArgumentPusher {
1204 protected:
1205 const jvalue *_ap;
1206
1207 inline void get_bool() { _arguments->push_int((jint)(_ap++)->z); }
1208 inline void get_char() { _arguments->push_int((jint)(_ap++)->c); }
1209 inline void get_short() { _arguments->push_int((jint)(_ap++)->s); }
1210 inline void get_byte() { _arguments->push_int((jint)(_ap++)->b); }
1211 inline void get_int() { _arguments->push_int((jint)(_ap++)->i); }
1212
1213 inline void get_long() { _arguments->push_long((_ap++)->j); }
1214 inline void get_float() { _arguments->push_float((_ap++)->f); }
1215 inline void get_double() { _arguments->push_double((_ap++)->d);}
1216 inline void get_object() { _arguments->push_oop(Handle((oop *)(_ap++)->l, false)); }
1217
1218 inline void set_ap(const jvalue *rap) { _ap = rap; }
1219
1220 public:
1221 JNI_ArgumentPusherArray(Symbol* signature, const jvalue *rap)
1222 : JNI_ArgumentPusher(signature) {
1223 set_ap(rap);
1224 }
1225 JNI_ArgumentPusherArray(jmethodID method_id, const jvalue *rap)
1226 : JNI_ArgumentPusher(JNIHandles::resolve_jmethod_id(method_id)->signature()) {
1227 set_ap(rap);
1228 }
1229
1230 // Optimized path if we have the bitvector form of signature
1231 void iterate( uint64_t fingerprint ) {
1232 if ( fingerprint == UCONST64(-1) ) SignatureIterator::iterate(); // Must be too many arguments
1233 else {
1234 _return_type = (BasicType)((fingerprint >> static_feature_size) &
1235 result_feature_mask);
1236 assert(fingerprint, "Fingerprint should not be 0");
1237 fingerprint = fingerprint >> (static_feature_size + result_feature_size);
1238 while ( 1 ) {
1239 switch ( fingerprint & parameter_feature_mask ) {
1240 case bool_parm:
1241 get_bool();
1242 break;
1243 case char_parm:
1244 get_char();
1245 break;
1246 case short_parm:
1247 get_short();
1248 break;
1249 case byte_parm:
1250 get_byte();
1251 break;
1252 case int_parm:
1253 get_int();
1254 break;
1255 case obj_parm:
1256 get_object();
1257 break;
1258 case long_parm:
1259 get_long();
1260 break;
1261 case float_parm:
1262 get_float();
1263 break;
1264 case double_parm:
1265 get_double();
1266 break;
1267 case done_parm:
1268 return;
1269 break;
1270 default:
1271 ShouldNotReachHere();
1272 break;
1273 }
1274 fingerprint >>= parameter_feature_size;
1275 }
1276 }
1277 }
1278 };
1279
1280
1281 enum JNICallType {
1282 JNI_STATIC,
1283 JNI_VIRTUAL,
1284 JNI_NONVIRTUAL
1285 };
1286
1287 static methodHandle jni_resolve_interface_call(Handle recv, methodHandle method, TRAPS) {
1288 assert(!method.is_null() , "method should not be null");
1289
1290 KlassHandle recv_klass; // Default to NULL (use of ?: can confuse gcc)
1291 if (recv.not_null()) recv_klass = KlassHandle(THREAD, recv->klass());
1292 KlassHandle spec_klass (THREAD, method->method_holder());
1293 Symbol* name = method->name();
1294 Symbol* signature = method->signature();
1295 CallInfo info;
1296 LinkResolver::resolve_interface_call(info, recv, recv_klass, spec_klass, name, signature, KlassHandle(), false, true, CHECK_(methodHandle()));
1297 return info.selected_method();
1298 }
1299
1300 static methodHandle jni_resolve_virtual_call(Handle recv, methodHandle method, TRAPS) {
1301 assert(!method.is_null() , "method should not be null");
1302
1303 KlassHandle recv_klass; // Default to NULL (use of ?: can confuse gcc)
1304 if (recv.not_null()) recv_klass = KlassHandle(THREAD, recv->klass());
1305 KlassHandle spec_klass (THREAD, method->method_holder());
1306 Symbol* name = method->name();
1307 Symbol* signature = method->signature();
1308 CallInfo info;
1309 LinkResolver::resolve_virtual_call(info, recv, recv_klass, spec_klass, name, signature, KlassHandle(), false, true, CHECK_(methodHandle()));
1310 return info.selected_method();
1311 }
1312
1313
1314
1315 static void jni_invoke_static(JNIEnv *env, JavaValue* result, jobject receiver, JNICallType call_type, jmethodID method_id, JNI_ArgumentPusher *args, TRAPS) {
1316 methodHandle method(THREAD, JNIHandles::resolve_jmethod_id(method_id));
1317
1318 // Create object to hold arguments for the JavaCall, and associate it with
1319 // the jni parser
1320 ResourceMark rm(THREAD);
1321 int number_of_parameters = method->size_of_parameters();
1322 JavaCallArguments java_args(number_of_parameters);
1323 args->set_java_argument_object(&java_args);
1324
1325 assert(method->is_static(), "method should be static");
1326
1327 // Fill out JavaCallArguments object
1328 args->iterate( Fingerprinter(method).fingerprint() );
1329 // Initialize result type
1330 result->set_type(args->get_ret_type());
1331
1332 // Invoke the method. Result is returned as oop.
1333 JavaCalls::call(result, method, &java_args, CHECK);
1334
1335 // Convert result
1336 if (result->get_type() == T_OBJECT || result->get_type() == T_ARRAY) {
1337 result->set_jobject(JNIHandles::make_local(env, (oop) result->get_jobject()));
1338 }
1339 }
1340
1341
1342 static void jni_invoke_nonstatic(JNIEnv *env, JavaValue* result, jobject receiver, JNICallType call_type, jmethodID method_id, JNI_ArgumentPusher *args, TRAPS) {
1343 oop recv = JNIHandles::resolve(receiver);
1344 if (recv == NULL) {
1345 THROW(vmSymbols::java_lang_NullPointerException());
1346 }
1347 Handle h_recv(THREAD, recv);
1348
1349 int number_of_parameters;
1350 methodOop selected_method;
1351 {
1352 methodOop m = JNIHandles::resolve_jmethod_id(method_id);
1353 number_of_parameters = m->size_of_parameters();
1354 klassOop holder = m->method_holder();
1355 if (!(Klass::cast(holder))->is_interface()) {
1356 // non-interface call -- for that little speed boost, don't handlize
1357 debug_only(No_Safepoint_Verifier nosafepoint;)
1358 if (call_type == JNI_VIRTUAL) {
1359 // jni_GetMethodID makes sure class is linked and initialized
1360 // so m should have a valid vtable index.
1361 int vtbl_index = m->vtable_index();
1362 if (vtbl_index != methodOopDesc::nonvirtual_vtable_index) {
1363 klassOop k = h_recv->klass();
1364 // k might be an arrayKlassOop but all vtables start at
1365 // the same place. The cast is to avoid virtual call and assertion.
1366 instanceKlass *ik = (instanceKlass*)k->klass_part();
1367 selected_method = ik->method_at_vtable(vtbl_index);
1368 } else {
1369 // final method
1370 selected_method = m;
1371 }
1372 } else {
1373 // JNI_NONVIRTUAL call
1374 selected_method = m;
1375 }
1376 } else {
1377 // interface call
1378 KlassHandle h_holder(THREAD, holder);
1379
1380 int itbl_index = m->cached_itable_index();
1381 if (itbl_index == -1) {
1382 itbl_index = klassItable::compute_itable_index(m);
1383 m->set_cached_itable_index(itbl_index);
1384 // the above may have grabbed a lock, 'm' and anything non-handlized can't be used again
1385 }
1386 klassOop k = h_recv->klass();
1387 selected_method = instanceKlass::cast(k)->method_at_itable(h_holder(), itbl_index, CHECK);
1388 }
1389 }
1390
1391 methodHandle method(THREAD, selected_method);
1392
1393 // Create object to hold arguments for the JavaCall, and associate it with
1394 // the jni parser
1395 ResourceMark rm(THREAD);
1396 JavaCallArguments java_args(number_of_parameters);
1397 args->set_java_argument_object(&java_args);
1398
1399 // handle arguments
1400 assert(!method->is_static(), "method should not be static");
1401 args->push_receiver(h_recv); // Push jobject handle
1402
1403 // Fill out JavaCallArguments object
1404 args->iterate( Fingerprinter(method).fingerprint() );
1405 // Initialize result type
1406 result->set_type(args->get_ret_type());
1407
1408 // Invoke the method. Result is returned as oop.
1409 JavaCalls::call(result, method, &java_args, CHECK);
1410
1411 // Convert result
1412 if (result->get_type() == T_OBJECT || result->get_type() == T_ARRAY) {
1413 result->set_jobject(JNIHandles::make_local(env, (oop) result->get_jobject()));
1414 }
1415 }
1416
1417
1418 static instanceOop alloc_object(jclass clazz, TRAPS) {
1419 KlassHandle k(THREAD, java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(clazz)));
1420 Klass::cast(k())->check_valid_for_instantiation(false, CHECK_NULL);
1421 instanceKlass::cast(k())->initialize(CHECK_NULL);
1422 instanceOop ih = instanceKlass::cast(k())->allocate_instance(THREAD);
1423 return ih;
1424 }
1425
1426 #ifndef USDT2
1427 DT_RETURN_MARK_DECL(AllocObject, jobject);
1428 #else /* USDT2 */
1429 DT_RETURN_MARK_DECL(AllocObject, jobject
1430 , HOTSPOT_JNI_ALLOCOBJECT_RETURN(_ret_ref));
1431 #endif /* USDT2 */
1432
1433 JNI_ENTRY(jobject, jni_AllocObject(JNIEnv *env, jclass clazz))
1434 JNIWrapper("AllocObject");
1435
1436 #ifndef USDT2
1437 DTRACE_PROBE2(hotspot_jni, AllocObject__entry, env, clazz);
1438 #else /* USDT2 */
1439 HOTSPOT_JNI_ALLOCOBJECT_ENTRY(
1440 env, clazz);
1441 #endif /* USDT2 */
1442 jobject ret = NULL;
1443 DT_RETURN_MARK(AllocObject, jobject, (const jobject&)ret);
1444
1445 instanceOop i = alloc_object(clazz, CHECK_NULL);
1446 ret = JNIHandles::make_local(env, i);
1447 return ret;
1448 JNI_END
1449
1450 #ifndef USDT2
1451 DT_RETURN_MARK_DECL(NewObjectA, jobject);
1452 #else /* USDT2 */
1453 DT_RETURN_MARK_DECL(NewObjectA, jobject
1454 , HOTSPOT_JNI_NEWOBJECTA_RETURN(_ret_ref));
1455 #endif /* USDT2 */
1456
1457 JNI_ENTRY(jobject, jni_NewObjectA(JNIEnv *env, jclass clazz, jmethodID methodID, const jvalue *args))
1458 JNIWrapper("NewObjectA");
1459 #ifndef USDT2
1460 DTRACE_PROBE3(hotspot_jni, NewObjectA__entry, env, clazz, methodID);
1461 #else /* USDT2 */
1462 HOTSPOT_JNI_NEWOBJECTA_ENTRY(
1463 env, clazz, (uintptr_t) methodID);
1464 #endif /* USDT2 */
1465 jobject obj = NULL;
1466 DT_RETURN_MARK(NewObjectA, jobject, (const jobject)obj);
1467
1468 instanceOop i = alloc_object(clazz, CHECK_NULL);
1469 obj = JNIHandles::make_local(env, i);
1470 JavaValue jvalue(T_VOID);
1471 JNI_ArgumentPusherArray ap(methodID, args);
1472 jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK_NULL);
1473 return obj;
1474 JNI_END
1475
1476 #ifndef USDT2
1477 DT_RETURN_MARK_DECL(NewObjectV, jobject);
1478 #else /* USDT2 */
1479 DT_RETURN_MARK_DECL(NewObjectV, jobject
1480 , HOTSPOT_JNI_NEWOBJECTV_RETURN(_ret_ref));
1481 #endif /* USDT2 */
1482
1483 JNI_ENTRY(jobject, jni_NewObjectV(JNIEnv *env, jclass clazz, jmethodID methodID, va_list args))
1484 JNIWrapper("NewObjectV");
1485 #ifndef USDT2
1486 DTRACE_PROBE3(hotspot_jni, NewObjectV__entry, env, clazz, methodID);
1487 #else /* USDT2 */
1488 HOTSPOT_JNI_NEWOBJECTV_ENTRY(
1489 env, clazz, (uintptr_t) methodID);
1490 #endif /* USDT2 */
1491 jobject obj = NULL;
1492 DT_RETURN_MARK(NewObjectV, jobject, (const jobject&)obj);
1493
1494 instanceOop i = alloc_object(clazz, CHECK_NULL);
1495 obj = JNIHandles::make_local(env, i);
1496 JavaValue jvalue(T_VOID);
1497 JNI_ArgumentPusherVaArg ap(methodID, args);
1498 jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK_NULL);
1499 return obj;
1500 JNI_END
1501
1502 #ifndef USDT2
1503 DT_RETURN_MARK_DECL(NewObject, jobject);
1504 #else /* USDT2 */
1505 DT_RETURN_MARK_DECL(NewObject, jobject
1506 , HOTSPOT_JNI_NEWOBJECT_RETURN(_ret_ref));
1507 #endif /* USDT2 */
1508
1509 JNI_ENTRY(jobject, jni_NewObject(JNIEnv *env, jclass clazz, jmethodID methodID, ...))
1510 JNIWrapper("NewObject");
1511 #ifndef USDT2
1512 DTRACE_PROBE3(hotspot_jni, NewObject__entry, env, clazz, methodID);
1513 #else /* USDT2 */
1514 HOTSPOT_JNI_NEWOBJECT_ENTRY(
1515 env, clazz, (uintptr_t) methodID);
1516 #endif /* USDT2 */
1517 jobject obj = NULL;
1518 DT_RETURN_MARK(NewObject, jobject, (const jobject&)obj);
1519
1520 instanceOop i = alloc_object(clazz, CHECK_NULL);
1521 obj = JNIHandles::make_local(env, i);
1522 va_list args;
1523 va_start(args, methodID);
1524 JavaValue jvalue(T_VOID);
1525 JNI_ArgumentPusherVaArg ap(methodID, args);
1526 jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK_NULL);
1527 va_end(args);
1528 return obj;
1529 JNI_END
1530
1531
1532 JNI_ENTRY(jclass, jni_GetObjectClass(JNIEnv *env, jobject obj))
1533 JNIWrapper("GetObjectClass");
1534 #ifndef USDT2
1535 DTRACE_PROBE2(hotspot_jni, GetObjectClass__entry, env, obj);
1536 #else /* USDT2 */
1537 HOTSPOT_JNI_GETOBJECTCLASS_ENTRY(
1538 env, obj);
1539 #endif /* USDT2 */
1540 klassOop k = JNIHandles::resolve_non_null(obj)->klass();
1541 jclass ret =
1542 (jclass) JNIHandles::make_local(env, Klass::cast(k)->java_mirror());
1543 #ifndef USDT2
1544 DTRACE_PROBE1(hotspot_jni, GetObjectClass__return, ret);
1545 #else /* USDT2 */
1546 HOTSPOT_JNI_GETOBJECTCLASS_RETURN(
1547 ret);
1548 #endif /* USDT2 */
1549 return ret;
1550 JNI_END
1551
1552 JNI_QUICK_ENTRY(jboolean, jni_IsInstanceOf(JNIEnv *env, jobject obj, jclass clazz))
1553 JNIWrapper("IsInstanceOf");
1554 #ifndef USDT2
1555 DTRACE_PROBE3(hotspot_jni, IsInstanceOf__entry, env, obj, clazz);
1556 #else /* USDT2 */
1557 HOTSPOT_JNI_ISINSTANCEOF_ENTRY(
1558 env, obj, clazz);
1559 #endif /* USDT2 */
1560 jboolean ret = JNI_TRUE;
1561 if (obj != NULL) {
1562 ret = JNI_FALSE;
1563 klassOop k = java_lang_Class::as_klassOop(
1564 JNIHandles::resolve_non_null(clazz));
1565 if (k != NULL) {
1566 ret = JNIHandles::resolve_non_null(obj)->is_a(k) ? JNI_TRUE : JNI_FALSE;
1567 }
1568 }
1569 #ifndef USDT2
1570 DTRACE_PROBE1(hotspot_jni, IsInstanceOf__return, ret);
1571 #else /* USDT2 */
1572 HOTSPOT_JNI_ISINSTANCEOF_RETURN(
1573 ret);
1574 #endif /* USDT2 */
1575 return ret;
1576 JNI_END
1577
1578
1579 static jmethodID get_method_id(JNIEnv *env, jclass clazz, const char *name_str,
1580 const char *sig, bool is_static, TRAPS) {
1581 // %%%% This code should probably just call into a method in the LinkResolver
1582 //
1583 // The class should have been loaded (we have an instance of the class
1584 // passed in) so the method and signature should already be in the symbol
1585 // table. If they're not there, the method doesn't exist.
1586 const char *name_to_probe = (name_str == NULL)
1587 ? vmSymbols::object_initializer_name()->as_C_string()
1588 : name_str;
1589 TempNewSymbol name = SymbolTable::probe(name_to_probe, (int)strlen(name_to_probe));
1590 TempNewSymbol signature = SymbolTable::probe(sig, (int)strlen(sig));
1591
1592 if (name == NULL || signature == NULL) {
1593 THROW_MSG_0(vmSymbols::java_lang_NoSuchMethodError(), name_str);
1594 }
1595
1596 // Throw a NoSuchMethodError exception if we have an instance of a
1597 // primitive java.lang.Class
1598 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(clazz))) {
1599 THROW_MSG_0(vmSymbols::java_lang_NoSuchMethodError(), name_str);
1600 }
1601
1602 KlassHandle klass(THREAD,
1603 java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(clazz)));
1604
1605 // Make sure class is linked and initialized before handing id's out to
1606 // methodOops.
1607 Klass::cast(klass())->initialize(CHECK_NULL);
1608
1609 methodOop m;
1610 if (name == vmSymbols::object_initializer_name() ||
1611 name == vmSymbols::class_initializer_name()) {
1612 // Never search superclasses for constructors
1613 if (klass->oop_is_instance()) {
1614 m = instanceKlass::cast(klass())->find_method(name, signature);
1615 } else {
1616 m = NULL;
1617 }
1618 } else {
1619 m = klass->lookup_method(name, signature);
1620 // Look up interfaces
1621 if (m == NULL && klass->oop_is_instance()) {
1622 m = instanceKlass::cast(klass())->lookup_method_in_all_interfaces(name,
1623 signature);
1624 }
1625 }
1626 if (m == NULL || (m->is_static() != is_static)) {
1627 THROW_MSG_0(vmSymbols::java_lang_NoSuchMethodError(), name_str);
1628 }
1629 return m->jmethod_id();
1630 }
1631
1632
1633 JNI_ENTRY(jmethodID, jni_GetMethodID(JNIEnv *env, jclass clazz,
1634 const char *name, const char *sig))
1635 JNIWrapper("GetMethodID");
1636 #ifndef USDT2
1637 DTRACE_PROBE4(hotspot_jni, GetMethodID__entry, env, clazz, name, sig);
1638 #else /* USDT2 */
1639 HOTSPOT_JNI_GETMETHODID_ENTRY(
1640 env, clazz, (char *) name, (char *) sig);
1641 #endif /* USDT2 */
1642 jmethodID ret = get_method_id(env, clazz, name, sig, false, thread);
1643 #ifndef USDT2
1644 DTRACE_PROBE1(hotspot_jni, GetMethodID__return, ret);
1645 #else /* USDT2 */
1646 HOTSPOT_JNI_GETMETHODID_RETURN(
1647 (uintptr_t) ret);
1648 #endif /* USDT2 */
1649 return ret;
1650 JNI_END
1651
1652
1653 JNI_ENTRY(jmethodID, jni_GetStaticMethodID(JNIEnv *env, jclass clazz,
1654 const char *name, const char *sig))
1655 JNIWrapper("GetStaticMethodID");
1656 #ifndef USDT2
1657 DTRACE_PROBE4(hotspot_jni, GetStaticMethodID__entry, env, clazz, name, sig);
1658 #else /* USDT2 */
1659 HOTSPOT_JNI_GETSTATICMETHODID_ENTRY(
1660 env, (char *) clazz, (char *) name, (char *)sig);
1661 #endif /* USDT2 */
1662 jmethodID ret = get_method_id(env, clazz, name, sig, true, thread);
1663 #ifndef USDT2
1664 DTRACE_PROBE1(hotspot_jni, GetStaticMethodID__return, ret);
1665 #else /* USDT2 */
1666 HOTSPOT_JNI_GETSTATICMETHODID_RETURN(
1667 (uintptr_t) ret);
1668 #endif /* USDT2 */
1669 return ret;
1670 JNI_END
1671
1672
1673
1674 //
1675 // Calling Methods
1676 //
1677
1678 #ifndef USDT2
1679 #define DEFINE_CALLMETHOD(ResultType, Result, Tag) \
1680 \
1681 DT_RETURN_MARK_DECL_FOR(Result, Call##Result##Method, ResultType);\
1682 DT_RETURN_MARK_DECL_FOR(Result, Call##Result##MethodV, ResultType);\
1683 DT_RETURN_MARK_DECL_FOR(Result, Call##Result##MethodA, ResultType);\
1684 \
1685 JNI_ENTRY(ResultType, \
1686 jni_Call##Result##Method(JNIEnv *env, jobject obj, jmethodID methodID, ...)) \
1687 JNIWrapper("Call" XSTR(Result) "Method"); \
1688 \
1689 DTRACE_PROBE3(hotspot_jni, Call##Result##Method__entry, env, obj, methodID); \
1690 ResultType ret = 0;\
1691 DT_RETURN_MARK_FOR(Result, Call##Result##Method, ResultType, \
1692 (const ResultType&)ret);\
1693 \
1694 va_list args; \
1695 va_start(args, methodID); \
1696 JavaValue jvalue(Tag); \
1697 JNI_ArgumentPusherVaArg ap(methodID, args); \
1698 jni_invoke_nonstatic(env, &jvalue, obj, JNI_VIRTUAL, methodID, &ap, CHECK_0); \
1699 va_end(args); \
1700 ret = jvalue.get_##ResultType(); \
1701 return ret;\
1702 JNI_END \
1703 \
1704 \
1705 JNI_ENTRY(ResultType, \
1706 jni_Call##Result##MethodV(JNIEnv *env, jobject obj, jmethodID methodID, va_list args)) \
1707 JNIWrapper("Call" XSTR(Result) "MethodV"); \
1708 \
1709 DTRACE_PROBE3(hotspot_jni, Call##Result##MethodV__entry, env, obj, methodID); \
1710 ResultType ret = 0;\
1711 DT_RETURN_MARK_FOR(Result, Call##Result##MethodV, ResultType, \
1712 (const ResultType&)ret);\
1713 \
1714 JavaValue jvalue(Tag); \
1715 JNI_ArgumentPusherVaArg ap(methodID, args); \
1716 jni_invoke_nonstatic(env, &jvalue, obj, JNI_VIRTUAL, methodID, &ap, CHECK_0); \
1717 ret = jvalue.get_##ResultType(); \
1718 return ret;\
1719 JNI_END \
1720 \
1721 \
1722 JNI_ENTRY(ResultType, \
1723 jni_Call##Result##MethodA(JNIEnv *env, jobject obj, jmethodID methodID, const jvalue *args)) \
1724 JNIWrapper("Call" XSTR(Result) "MethodA"); \
1725 DTRACE_PROBE3(hotspot_jni, Call##Result##MethodA__entry, env, obj, methodID); \
1726 ResultType ret = 0;\
1727 DT_RETURN_MARK_FOR(Result, Call##Result##MethodA, ResultType, \
1728 (const ResultType&)ret);\
1729 \
1730 JavaValue jvalue(Tag); \
1731 JNI_ArgumentPusherArray ap(methodID, args); \
1732 jni_invoke_nonstatic(env, &jvalue, obj, JNI_VIRTUAL, methodID, &ap, CHECK_0); \
1733 ret = jvalue.get_##ResultType(); \
1734 return ret;\
1735 JNI_END
1736
1737 // the runtime type of subword integral basic types is integer
1738 DEFINE_CALLMETHOD(jboolean, Boolean, T_BOOLEAN)
1739 DEFINE_CALLMETHOD(jbyte, Byte, T_BYTE)
1740 DEFINE_CALLMETHOD(jchar, Char, T_CHAR)
1741 DEFINE_CALLMETHOD(jshort, Short, T_SHORT)
1742
1743 DEFINE_CALLMETHOD(jobject, Object, T_OBJECT)
1744 DEFINE_CALLMETHOD(jint, Int, T_INT)
1745 DEFINE_CALLMETHOD(jlong, Long, T_LONG)
1746 DEFINE_CALLMETHOD(jfloat, Float, T_FLOAT)
1747 DEFINE_CALLMETHOD(jdouble, Double, T_DOUBLE)
1748
1749 DT_VOID_RETURN_MARK_DECL(CallVoidMethod);
1750 DT_VOID_RETURN_MARK_DECL(CallVoidMethodV);
1751 DT_VOID_RETURN_MARK_DECL(CallVoidMethodA);
1752
1753 #else /* USDT2 */
1754
1755 #define DEFINE_CALLMETHOD(ResultType, Result, Tag \
1756 , EntryProbe, ReturnProbe) \
1757 \
1758 DT_RETURN_MARK_DECL_FOR(Result, Call##Result##Method, ResultType \
1759 , ReturnProbe); \
1760 \
1761 JNI_ENTRY(ResultType, \
1762 jni_Call##Result##Method(JNIEnv *env, jobject obj, jmethodID methodID, ...)) \
1763 JNIWrapper("Call" XSTR(Result) "Method"); \
1764 \
1765 EntryProbe; \
1766 ResultType ret = 0;\
1767 DT_RETURN_MARK_FOR(Result, Call##Result##Method, ResultType, \
1768 (const ResultType&)ret);\
1769 \
1770 va_list args; \
1771 va_start(args, methodID); \
1772 JavaValue jvalue(Tag); \
1773 JNI_ArgumentPusherVaArg ap(methodID, args); \
1774 jni_invoke_nonstatic(env, &jvalue, obj, JNI_VIRTUAL, methodID, &ap, CHECK_0); \
1775 va_end(args); \
1776 ret = jvalue.get_##ResultType(); \
1777 return ret;\
1778 JNI_END
1779
1780 // the runtime type of subword integral basic types is integer
1781 DEFINE_CALLMETHOD(jboolean, Boolean, T_BOOLEAN
1782 , HOTSPOT_JNI_CALLBOOLEANMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1783 HOTSPOT_JNI_CALLBOOLEANMETHOD_RETURN(_ret_ref))
1784 DEFINE_CALLMETHOD(jbyte, Byte, T_BYTE
1785 , HOTSPOT_JNI_CALLBYTEMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1786 HOTSPOT_JNI_CALLBYTEMETHOD_RETURN(_ret_ref))
1787 DEFINE_CALLMETHOD(jchar, Char, T_CHAR
1788 , HOTSPOT_JNI_CALLCHARMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1789 HOTSPOT_JNI_CALLCHARMETHOD_RETURN(_ret_ref))
1790 DEFINE_CALLMETHOD(jshort, Short, T_SHORT
1791 , HOTSPOT_JNI_CALLSHORTMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1792 HOTSPOT_JNI_CALLSHORTMETHOD_RETURN(_ret_ref))
1793
1794 DEFINE_CALLMETHOD(jobject, Object, T_OBJECT
1795 , HOTSPOT_JNI_CALLOBJECTMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1796 HOTSPOT_JNI_CALLOBJECTMETHOD_RETURN(_ret_ref))
1797 DEFINE_CALLMETHOD(jint, Int, T_INT,
1798 HOTSPOT_JNI_CALLINTMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1799 HOTSPOT_JNI_CALLINTMETHOD_RETURN(_ret_ref))
1800 DEFINE_CALLMETHOD(jlong, Long, T_LONG
1801 , HOTSPOT_JNI_CALLLONGMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1802 HOTSPOT_JNI_CALLLONGMETHOD_RETURN(_ret_ref))
1803 // Float and double probes don't return value because dtrace doesn't currently support it
1804 DEFINE_CALLMETHOD(jfloat, Float, T_FLOAT
1805 , HOTSPOT_JNI_CALLFLOATMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1806 HOTSPOT_JNI_CALLFLOATMETHOD_RETURN())
1807 DEFINE_CALLMETHOD(jdouble, Double, T_DOUBLE
1808 , HOTSPOT_JNI_CALLDOUBLEMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1809 HOTSPOT_JNI_CALLDOUBLEMETHOD_RETURN())
1810
1811 #define DEFINE_CALLMETHODV(ResultType, Result, Tag \
1812 , EntryProbe, ReturnProbe) \
1813 \
1814 DT_RETURN_MARK_DECL_FOR(Result, Call##Result##MethodV, ResultType \
1815 , ReturnProbe); \
1816 \
1817 JNI_ENTRY(ResultType, \
1818 jni_Call##Result##MethodV(JNIEnv *env, jobject obj, jmethodID methodID, va_list args)) \
1819 JNIWrapper("Call" XSTR(Result) "MethodV"); \
1820 \
1821 EntryProbe;\
1822 ResultType ret = 0;\
1823 DT_RETURN_MARK_FOR(Result, Call##Result##MethodV, ResultType, \
1824 (const ResultType&)ret);\
1825 \
1826 JavaValue jvalue(Tag); \
1827 JNI_ArgumentPusherVaArg ap(methodID, args); \
1828 jni_invoke_nonstatic(env, &jvalue, obj, JNI_VIRTUAL, methodID, &ap, CHECK_0); \
1829 ret = jvalue.get_##ResultType(); \
1830 return ret;\
1831 JNI_END
1832
1833 // the runtime type of subword integral basic types is integer
1834 DEFINE_CALLMETHODV(jboolean, Boolean, T_BOOLEAN
1835 , HOTSPOT_JNI_CALLBOOLEANMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1836 HOTSPOT_JNI_CALLBOOLEANMETHOD_RETURN(_ret_ref))
1837 DEFINE_CALLMETHODV(jbyte, Byte, T_BYTE
1838 , HOTSPOT_JNI_CALLBYTEMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1839 HOTSPOT_JNI_CALLBYTEMETHOD_RETURN(_ret_ref))
1840 DEFINE_CALLMETHODV(jchar, Char, T_CHAR
1841 , HOTSPOT_JNI_CALLCHARMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1842 HOTSPOT_JNI_CALLCHARMETHOD_RETURN(_ret_ref))
1843 DEFINE_CALLMETHODV(jshort, Short, T_SHORT
1844 , HOTSPOT_JNI_CALLSHORTMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1845 HOTSPOT_JNI_CALLSHORTMETHOD_RETURN(_ret_ref))
1846
1847 DEFINE_CALLMETHODV(jobject, Object, T_OBJECT
1848 , HOTSPOT_JNI_CALLOBJECTMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1849 HOTSPOT_JNI_CALLOBJECTMETHOD_RETURN(_ret_ref))
1850 DEFINE_CALLMETHODV(jint, Int, T_INT,
1851 HOTSPOT_JNI_CALLINTMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1852 HOTSPOT_JNI_CALLINTMETHOD_RETURN(_ret_ref))
1853 DEFINE_CALLMETHODV(jlong, Long, T_LONG
1854 , HOTSPOT_JNI_CALLLONGMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1855 HOTSPOT_JNI_CALLLONGMETHOD_RETURN(_ret_ref))
1856 // Float and double probes don't return value because dtrace doesn't currently support it
1857 DEFINE_CALLMETHODV(jfloat, Float, T_FLOAT
1858 , HOTSPOT_JNI_CALLFLOATMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1859 HOTSPOT_JNI_CALLFLOATMETHOD_RETURN())
1860 DEFINE_CALLMETHODV(jdouble, Double, T_DOUBLE
1861 , HOTSPOT_JNI_CALLDOUBLEMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1862 HOTSPOT_JNI_CALLDOUBLEMETHOD_RETURN())
1863
1864 #define DEFINE_CALLMETHODA(ResultType, Result, Tag \
1865 , EntryProbe, ReturnProbe) \
1866 \
1867 DT_RETURN_MARK_DECL_FOR(Result, Call##Result##MethodA, ResultType \
1868 , ReturnProbe); \
1869 \
1870 JNI_ENTRY(ResultType, \
1871 jni_Call##Result##MethodA(JNIEnv *env, jobject obj, jmethodID methodID, const jvalue *args)) \
1872 JNIWrapper("Call" XSTR(Result) "MethodA"); \
1873 EntryProbe; \
1874 ResultType ret = 0;\
1875 DT_RETURN_MARK_FOR(Result, Call##Result##MethodA, ResultType, \
1876 (const ResultType&)ret);\
1877 \
1878 JavaValue jvalue(Tag); \
1879 JNI_ArgumentPusherArray ap(methodID, args); \
1880 jni_invoke_nonstatic(env, &jvalue, obj, JNI_VIRTUAL, methodID, &ap, CHECK_0); \
1881 ret = jvalue.get_##ResultType(); \
1882 return ret;\
1883 JNI_END
1884
1885 // the runtime type of subword integral basic types is integer
1886 DEFINE_CALLMETHODA(jboolean, Boolean, T_BOOLEAN
1887 , HOTSPOT_JNI_CALLBOOLEANMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1888 HOTSPOT_JNI_CALLBOOLEANMETHOD_RETURN(_ret_ref))
1889 DEFINE_CALLMETHODA(jbyte, Byte, T_BYTE
1890 , HOTSPOT_JNI_CALLBYTEMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1891 HOTSPOT_JNI_CALLBYTEMETHOD_RETURN(_ret_ref))
1892 DEFINE_CALLMETHODA(jchar, Char, T_CHAR
1893 , HOTSPOT_JNI_CALLCHARMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1894 HOTSPOT_JNI_CALLCHARMETHOD_RETURN(_ret_ref))
1895 DEFINE_CALLMETHODA(jshort, Short, T_SHORT
1896 , HOTSPOT_JNI_CALLSHORTMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1897 HOTSPOT_JNI_CALLSHORTMETHOD_RETURN(_ret_ref))
1898
1899 DEFINE_CALLMETHODA(jobject, Object, T_OBJECT
1900 , HOTSPOT_JNI_CALLOBJECTMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1901 HOTSPOT_JNI_CALLOBJECTMETHOD_RETURN(_ret_ref))
1902 DEFINE_CALLMETHODA(jint, Int, T_INT,
1903 HOTSPOT_JNI_CALLINTMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1904 HOTSPOT_JNI_CALLINTMETHOD_RETURN(_ret_ref))
1905 DEFINE_CALLMETHODA(jlong, Long, T_LONG
1906 , HOTSPOT_JNI_CALLLONGMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1907 HOTSPOT_JNI_CALLLONGMETHOD_RETURN(_ret_ref))
1908 // Float and double probes don't return value because dtrace doesn't currently support it
1909 DEFINE_CALLMETHODA(jfloat, Float, T_FLOAT
1910 , HOTSPOT_JNI_CALLFLOATMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1911 HOTSPOT_JNI_CALLFLOATMETHOD_RETURN())
1912 DEFINE_CALLMETHODA(jdouble, Double, T_DOUBLE
1913 , HOTSPOT_JNI_CALLDOUBLEMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1914 HOTSPOT_JNI_CALLDOUBLEMETHOD_RETURN())
1915
1916 DT_VOID_RETURN_MARK_DECL(CallVoidMethod, HOTSPOT_JNI_CALLVOIDMETHOD_RETURN());
1917 DT_VOID_RETURN_MARK_DECL(CallVoidMethodV, HOTSPOT_JNI_CALLVOIDMETHODV_RETURN());
1918 DT_VOID_RETURN_MARK_DECL(CallVoidMethodA, HOTSPOT_JNI_CALLVOIDMETHODA_RETURN());
1919
1920 #endif /* USDT2 */
1921
1922 JNI_ENTRY(void, jni_CallVoidMethod(JNIEnv *env, jobject obj, jmethodID methodID, ...))
1923 JNIWrapper("CallVoidMethod");
1924 #ifndef USDT2
1925 DTRACE_PROBE3(hotspot_jni, CallVoidMethod__entry, env, obj, methodID);
1926 #else /* USDT2 */
1927 HOTSPOT_JNI_CALLVOIDMETHOD_ENTRY(
1928 env, obj, (uintptr_t) methodID);
1929 #endif /* USDT2 */
1930 DT_VOID_RETURN_MARK(CallVoidMethod);
1931
1932 va_list args;
1933 va_start(args, methodID);
1934 JavaValue jvalue(T_VOID);
1935 JNI_ArgumentPusherVaArg ap(methodID, args);
1936 jni_invoke_nonstatic(env, &jvalue, obj, JNI_VIRTUAL, methodID, &ap, CHECK);
1937 va_end(args);
1938 JNI_END
1939
1940
1941 JNI_ENTRY(void, jni_CallVoidMethodV(JNIEnv *env, jobject obj, jmethodID methodID, va_list args))
1942 JNIWrapper("CallVoidMethodV");
1943 #ifndef USDT2
1944 DTRACE_PROBE3(hotspot_jni, CallVoidMethodV__entry, env, obj, methodID);
1945 #else /* USDT2 */
1946 HOTSPOT_JNI_CALLVOIDMETHODV_ENTRY(
1947 env, obj, (uintptr_t) methodID);
1948 #endif /* USDT2 */
1949 DT_VOID_RETURN_MARK(CallVoidMethodV);
1950
1951 JavaValue jvalue(T_VOID);
1952 JNI_ArgumentPusherVaArg ap(methodID, args);
1953 jni_invoke_nonstatic(env, &jvalue, obj, JNI_VIRTUAL, methodID, &ap, CHECK);
1954 JNI_END
1955
1956
1957 JNI_ENTRY(void, jni_CallVoidMethodA(JNIEnv *env, jobject obj, jmethodID methodID, const jvalue *args))
1958 JNIWrapper("CallVoidMethodA");
1959 #ifndef USDT2
1960 DTRACE_PROBE3(hotspot_jni, CallVoidMethodA__entry, env, obj, methodID);
1961 #else /* USDT2 */
1962 HOTSPOT_JNI_CALLVOIDMETHODA_ENTRY(
1963 env, obj, (uintptr_t) methodID);
1964 #endif /* USDT2 */
1965 DT_VOID_RETURN_MARK(CallVoidMethodA);
1966
1967 JavaValue jvalue(T_VOID);
1968 JNI_ArgumentPusherArray ap(methodID, args);
1969 jni_invoke_nonstatic(env, &jvalue, obj, JNI_VIRTUAL, methodID, &ap, CHECK);
1970 JNI_END
1971
1972
1973 #ifndef USDT2
1974 #define DEFINE_CALLNONVIRTUALMETHOD(ResultType, Result, Tag) \
1975 \
1976 DT_RETURN_MARK_DECL_FOR(Result, CallNonvirtual##Result##Method, ResultType);\
1977 DT_RETURN_MARK_DECL_FOR(Result, CallNonvirtual##Result##MethodV, ResultType);\
1978 DT_RETURN_MARK_DECL_FOR(Result, CallNonvirtual##Result##MethodA, ResultType);\
1979 \
1980 JNI_ENTRY(ResultType, \
1981 jni_CallNonvirtual##Result##Method(JNIEnv *env, jobject obj, jclass cls, jmethodID methodID, ...)) \
1982 JNIWrapper("CallNonvitual" XSTR(Result) "Method"); \
1983 \
1984 DTRACE_PROBE4(hotspot_jni, CallNonvirtual##Result##Method__entry, env, obj, cls, methodID);\
1985 ResultType ret;\
1986 DT_RETURN_MARK_FOR(Result, CallNonvirtual##Result##Method, ResultType, \
1987 (const ResultType&)ret);\
1988 \
1989 va_list args; \
1990 va_start(args, methodID); \
1991 JavaValue jvalue(Tag); \
1992 JNI_ArgumentPusherVaArg ap(methodID, args); \
1993 jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK_0); \
1994 va_end(args); \
1995 ret = jvalue.get_##ResultType(); \
1996 return ret;\
1997 JNI_END \
1998 \
1999 JNI_ENTRY(ResultType, \
2000 jni_CallNonvirtual##Result##MethodV(JNIEnv *env, jobject obj, jclass cls, jmethodID methodID, va_list args)) \
2001 JNIWrapper("CallNonvitual" XSTR(Result) "#MethodV"); \
2002 DTRACE_PROBE4(hotspot_jni, CallNonvirtual##Result##MethodV__entry, env, obj, cls, methodID);\
2003 ResultType ret;\
2004 DT_RETURN_MARK_FOR(Result, CallNonvirtual##Result##MethodV, ResultType, \
2005 (const ResultType&)ret);\
2006 \
2007 JavaValue jvalue(Tag); \
2008 JNI_ArgumentPusherVaArg ap(methodID, args); \
2009 jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK_0); \
2010 ret = jvalue.get_##ResultType(); \
2011 return ret;\
2012 JNI_END \
2013 \
2014 JNI_ENTRY(ResultType, \
2015 jni_CallNonvirtual##Result##MethodA(JNIEnv *env, jobject obj, jclass cls, jmethodID methodID, const jvalue *args)) \
2016 JNIWrapper("CallNonvitual" XSTR(Result) "MethodA"); \
2017 DTRACE_PROBE4(hotspot_jni, CallNonvirtual##Result##MethodA__entry, env, obj, cls, methodID);\
2018 ResultType ret;\
2019 DT_RETURN_MARK_FOR(Result, CallNonvirtual##Result##MethodA, ResultType, \
2020 (const ResultType&)ret);\
2021 \
2022 JavaValue jvalue(Tag); \
2023 JNI_ArgumentPusherArray ap(methodID, args); \
2024 jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK_0); \
2025 ret = jvalue.get_##ResultType(); \
2026 return ret;\
2027 JNI_END
2028
2029 // the runtime type of subword integral basic types is integer
2030 DEFINE_CALLNONVIRTUALMETHOD(jboolean, Boolean, T_BOOLEAN)
2031 DEFINE_CALLNONVIRTUALMETHOD(jbyte, Byte, T_BYTE)
2032 DEFINE_CALLNONVIRTUALMETHOD(jchar, Char, T_CHAR)
2033 DEFINE_CALLNONVIRTUALMETHOD(jshort, Short, T_SHORT)
2034
2035 DEFINE_CALLNONVIRTUALMETHOD(jobject, Object, T_OBJECT)
2036 DEFINE_CALLNONVIRTUALMETHOD(jint, Int, T_INT)
2037 DEFINE_CALLNONVIRTUALMETHOD(jlong, Long, T_LONG)
2038 DEFINE_CALLNONVIRTUALMETHOD(jfloat, Float, T_FLOAT)
2039 DEFINE_CALLNONVIRTUALMETHOD(jdouble, Double, T_DOUBLE)
2040
2041
2042 DT_VOID_RETURN_MARK_DECL(CallNonvirtualVoidMethod);
2043 DT_VOID_RETURN_MARK_DECL(CallNonvirtualVoidMethodV);
2044 DT_VOID_RETURN_MARK_DECL(CallNonvirtualVoidMethodA);
2045
2046 #else /* USDT2 */
2047
2048 #define DEFINE_CALLNONVIRTUALMETHOD(ResultType, Result, Tag \
2049 , EntryProbe, ReturnProbe) \
2050 \
2051 DT_RETURN_MARK_DECL_FOR(Result, CallNonvirtual##Result##Method, ResultType \
2052 , ReturnProbe);\
2053 \
2054 JNI_ENTRY(ResultType, \
2055 jni_CallNonvirtual##Result##Method(JNIEnv *env, jobject obj, jclass cls, jmethodID methodID, ...)) \
2056 JNIWrapper("CallNonvitual" XSTR(Result) "Method"); \
2057 \
2058 EntryProbe;\
2059 ResultType ret;\
2060 DT_RETURN_MARK_FOR(Result, CallNonvirtual##Result##Method, ResultType, \
2061 (const ResultType&)ret);\
2062 \
2063 va_list args; \
2064 va_start(args, methodID); \
2065 JavaValue jvalue(Tag); \
2066 JNI_ArgumentPusherVaArg ap(methodID, args); \
2067 jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK_0); \
2068 va_end(args); \
2069 ret = jvalue.get_##ResultType(); \
2070 return ret;\
2071 JNI_END
2072
2073 // the runtime type of subword integral basic types is integer
2074 DEFINE_CALLNONVIRTUALMETHOD(jboolean, Boolean, T_BOOLEAN
2075 , HOTSPOT_JNI_CALLNONVIRTUALBOOLEANMETHOD_ENTRY(env, obj, cls, (uintptr_t)methodID),
2076 HOTSPOT_JNI_CALLNONVIRTUALBOOLEANMETHOD_RETURN(_ret_ref))
2077 DEFINE_CALLNONVIRTUALMETHOD(jbyte, Byte, T_BYTE
2078 , HOTSPOT_JNI_CALLNONVIRTUALBYTEMETHOD_ENTRY(env, obj, cls, (uintptr_t)methodID),
2079 HOTSPOT_JNI_CALLNONVIRTUALBYTEMETHOD_RETURN(_ret_ref))
2080 DEFINE_CALLNONVIRTUALMETHOD(jchar, Char, T_CHAR
2081 , HOTSPOT_JNI_CALLNONVIRTUALCHARMETHOD_ENTRY(env, obj, cls, (uintptr_t)methodID),
2082 HOTSPOT_JNI_CALLNONVIRTUALCHARMETHOD_RETURN(_ret_ref))
2083 DEFINE_CALLNONVIRTUALMETHOD(jshort, Short, T_SHORT
2084 , HOTSPOT_JNI_CALLNONVIRTUALSHORTMETHOD_ENTRY(env, obj, cls, (uintptr_t)methodID),
2085 HOTSPOT_JNI_CALLNONVIRTUALSHORTMETHOD_RETURN(_ret_ref))
2086
2087 DEFINE_CALLNONVIRTUALMETHOD(jobject, Object, T_OBJECT
2088 , HOTSPOT_JNI_CALLNONVIRTUALOBJECTMETHOD_ENTRY(env, obj, cls, (uintptr_t)methodID),
2089 HOTSPOT_JNI_CALLNONVIRTUALOBJECTMETHOD_RETURN(_ret_ref))
2090 DEFINE_CALLNONVIRTUALMETHOD(jint, Int, T_INT
2091 , HOTSPOT_JNI_CALLNONVIRTUALINTMETHOD_ENTRY(env, obj, cls, (uintptr_t)methodID),
2092 HOTSPOT_JNI_CALLNONVIRTUALINTMETHOD_RETURN(_ret_ref))
2093 DEFINE_CALLNONVIRTUALMETHOD(jlong, Long, T_LONG
2094 , HOTSPOT_JNI_CALLNONVIRTUALLONGMETHOD_ENTRY(env, obj, cls, (uintptr_t)methodID),
2095 // Float and double probes don't return value because dtrace doesn't currently support it
2096 HOTSPOT_JNI_CALLNONVIRTUALLONGMETHOD_RETURN(_ret_ref))
2097 DEFINE_CALLNONVIRTUALMETHOD(jfloat, Float, T_FLOAT
2098 , HOTSPOT_JNI_CALLNONVIRTUALFLOATMETHOD_ENTRY(env, obj, cls, (uintptr_t)methodID),
2099 HOTSPOT_JNI_CALLNONVIRTUALFLOATMETHOD_RETURN())
2100 DEFINE_CALLNONVIRTUALMETHOD(jdouble, Double, T_DOUBLE
2101 , HOTSPOT_JNI_CALLNONVIRTUALDOUBLEMETHOD_ENTRY(env, obj, cls, (uintptr_t)methodID),
2102 HOTSPOT_JNI_CALLNONVIRTUALDOUBLEMETHOD_RETURN())
2103
2104 #define DEFINE_CALLNONVIRTUALMETHODV(ResultType, Result, Tag \
2105 , EntryProbe, ReturnProbe) \
2106 \
2107 DT_RETURN_MARK_DECL_FOR(Result, CallNonvirtual##Result##MethodV, ResultType \
2108 , ReturnProbe);\
2109 \
2110 JNI_ENTRY(ResultType, \
2111 jni_CallNonvirtual##Result##MethodV(JNIEnv *env, jobject obj, jclass cls, jmethodID methodID, va_list args)) \
2112 JNIWrapper("CallNonvitual" XSTR(Result) "MethodV"); \
2113 \
2114 EntryProbe;\
2115 ResultType ret;\
2116 DT_RETURN_MARK_FOR(Result, CallNonvirtual##Result##MethodV, ResultType, \
2117 (const ResultType&)ret);\
2118 \
2119 JavaValue jvalue(Tag); \
2120 JNI_ArgumentPusherVaArg ap(methodID, args); \
2121 jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK_0); \
2122 ret = jvalue.get_##ResultType(); \
2123 return ret;\
2124 JNI_END
2125
2126 // the runtime type of subword integral basic types is integer
2127 DEFINE_CALLNONVIRTUALMETHODV(jboolean, Boolean, T_BOOLEAN
2128 , HOTSPOT_JNI_CALLNONVIRTUALBOOLEANMETHODV_ENTRY(env, obj, cls, (uintptr_t)methodID),
2129 HOTSPOT_JNI_CALLNONVIRTUALBOOLEANMETHODV_RETURN(_ret_ref))
2130 DEFINE_CALLNONVIRTUALMETHODV(jbyte, Byte, T_BYTE
2131 , HOTSPOT_JNI_CALLNONVIRTUALBYTEMETHODV_ENTRY(env, obj, cls, (uintptr_t)methodID),
2132 HOTSPOT_JNI_CALLNONVIRTUALBYTEMETHODV_RETURN(_ret_ref))
2133 DEFINE_CALLNONVIRTUALMETHODV(jchar, Char, T_CHAR
2134 , HOTSPOT_JNI_CALLNONVIRTUALCHARMETHODV_ENTRY(env, obj, cls, (uintptr_t)methodID),
2135 HOTSPOT_JNI_CALLNONVIRTUALCHARMETHODV_RETURN(_ret_ref))
2136 DEFINE_CALLNONVIRTUALMETHODV(jshort, Short, T_SHORT
2137 , HOTSPOT_JNI_CALLNONVIRTUALSHORTMETHODV_ENTRY(env, obj, cls, (uintptr_t)methodID),
2138 HOTSPOT_JNI_CALLNONVIRTUALSHORTMETHODV_RETURN(_ret_ref))
2139
2140 DEFINE_CALLNONVIRTUALMETHODV(jobject, Object, T_OBJECT
2141 , HOTSPOT_JNI_CALLNONVIRTUALOBJECTMETHODV_ENTRY(env, obj, cls, (uintptr_t)methodID),
2142 HOTSPOT_JNI_CALLNONVIRTUALOBJECTMETHODV_RETURN(_ret_ref))
2143 DEFINE_CALLNONVIRTUALMETHODV(jint, Int, T_INT
2144 , HOTSPOT_JNI_CALLNONVIRTUALINTMETHODV_ENTRY(env, obj, cls, (uintptr_t)methodID),
2145 HOTSPOT_JNI_CALLNONVIRTUALINTMETHODV_RETURN(_ret_ref))
2146 DEFINE_CALLNONVIRTUALMETHODV(jlong, Long, T_LONG
2147 , HOTSPOT_JNI_CALLNONVIRTUALLONGMETHODV_ENTRY(env, obj, cls, (uintptr_t)methodID),
2148 // Float and double probes don't return value because dtrace doesn't currently support it
2149 HOTSPOT_JNI_CALLNONVIRTUALLONGMETHODV_RETURN(_ret_ref))
2150 DEFINE_CALLNONVIRTUALMETHODV(jfloat, Float, T_FLOAT
2151 , HOTSPOT_JNI_CALLNONVIRTUALFLOATMETHODV_ENTRY(env, obj, cls, (uintptr_t)methodID),
2152 HOTSPOT_JNI_CALLNONVIRTUALFLOATMETHODV_RETURN())
2153 DEFINE_CALLNONVIRTUALMETHODV(jdouble, Double, T_DOUBLE
2154 , HOTSPOT_JNI_CALLNONVIRTUALDOUBLEMETHODV_ENTRY(env, obj, cls, (uintptr_t)methodID),
2155 HOTSPOT_JNI_CALLNONVIRTUALDOUBLEMETHODV_RETURN())
2156
2157 #define DEFINE_CALLNONVIRTUALMETHODA(ResultType, Result, Tag \
2158 , EntryProbe, ReturnProbe) \
2159 \
2160 DT_RETURN_MARK_DECL_FOR(Result, CallNonvirtual##Result##MethodA, ResultType \
2161 , ReturnProbe);\
2162 \
2163 JNI_ENTRY(ResultType, \
2164 jni_CallNonvirtual##Result##MethodA(JNIEnv *env, jobject obj, jclass cls, jmethodID methodID, const jvalue *args)) \
2165 JNIWrapper("CallNonvitual" XSTR(Result) "MethodA"); \
2166 \
2167 EntryProbe;\
2168 ResultType ret;\
2169 DT_RETURN_MARK_FOR(Result, CallNonvirtual##Result##MethodA, ResultType, \
2170 (const ResultType&)ret);\
2171 \
2172 JavaValue jvalue(Tag); \
2173 JNI_ArgumentPusherArray ap(methodID, args); \
2174 jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK_0); \
2175 ret = jvalue.get_##ResultType(); \
2176 return ret;\
2177 JNI_END
2178
2179 // the runtime type of subword integral basic types is integer
2180 DEFINE_CALLNONVIRTUALMETHODA(jboolean, Boolean, T_BOOLEAN
2181 , HOTSPOT_JNI_CALLNONVIRTUALBOOLEANMETHODA_ENTRY(env, obj, cls, (uintptr_t)methodID),
2182 HOTSPOT_JNI_CALLNONVIRTUALBOOLEANMETHODA_RETURN(_ret_ref))
2183 DEFINE_CALLNONVIRTUALMETHODA(jbyte, Byte, T_BYTE
2184 , HOTSPOT_JNI_CALLNONVIRTUALBYTEMETHODA_ENTRY(env, obj, cls, (uintptr_t)methodID),
2185 HOTSPOT_JNI_CALLNONVIRTUALBYTEMETHODA_RETURN(_ret_ref))
2186 DEFINE_CALLNONVIRTUALMETHODA(jchar, Char, T_CHAR
2187 , HOTSPOT_JNI_CALLNONVIRTUALCHARMETHODA_ENTRY(env, obj, cls, (uintptr_t)methodID),
2188 HOTSPOT_JNI_CALLNONVIRTUALCHARMETHODA_RETURN(_ret_ref))
2189 DEFINE_CALLNONVIRTUALMETHODA(jshort, Short, T_SHORT
2190 , HOTSPOT_JNI_CALLNONVIRTUALSHORTMETHODA_ENTRY(env, obj, cls, (uintptr_t)methodID),
2191 HOTSPOT_JNI_CALLNONVIRTUALSHORTMETHODA_RETURN(_ret_ref))
2192
2193 DEFINE_CALLNONVIRTUALMETHODA(jobject, Object, T_OBJECT
2194 , HOTSPOT_JNI_CALLNONVIRTUALOBJECTMETHODA_ENTRY(env, obj, cls, (uintptr_t)methodID),
2195 HOTSPOT_JNI_CALLNONVIRTUALOBJECTMETHODA_RETURN(_ret_ref))
2196 DEFINE_CALLNONVIRTUALMETHODA(jint, Int, T_INT
2197 , HOTSPOT_JNI_CALLNONVIRTUALINTMETHODA_ENTRY(env, obj, cls, (uintptr_t)methodID),
2198 HOTSPOT_JNI_CALLNONVIRTUALINTMETHODA_RETURN(_ret_ref))
2199 DEFINE_CALLNONVIRTUALMETHODA(jlong, Long, T_LONG
2200 , HOTSPOT_JNI_CALLNONVIRTUALLONGMETHODA_ENTRY(env, obj, cls, (uintptr_t)methodID),
2201 // Float and double probes don't return value because dtrace doesn't currently support it
2202 HOTSPOT_JNI_CALLNONVIRTUALLONGMETHODA_RETURN(_ret_ref))
2203 DEFINE_CALLNONVIRTUALMETHODA(jfloat, Float, T_FLOAT
2204 , HOTSPOT_JNI_CALLNONVIRTUALFLOATMETHODA_ENTRY(env, obj, cls, (uintptr_t)methodID),
2205 HOTSPOT_JNI_CALLNONVIRTUALFLOATMETHODA_RETURN())
2206 DEFINE_CALLNONVIRTUALMETHODA(jdouble, Double, T_DOUBLE
2207 , HOTSPOT_JNI_CALLNONVIRTUALDOUBLEMETHODA_ENTRY(env, obj, cls, (uintptr_t)methodID),
2208 HOTSPOT_JNI_CALLNONVIRTUALDOUBLEMETHODA_RETURN())
2209
2210 DT_VOID_RETURN_MARK_DECL(CallNonvirtualVoidMethod
2211 , HOTSPOT_JNI_CALLNONVIRTUALVOIDMETHOD_RETURN());
2212 DT_VOID_RETURN_MARK_DECL(CallNonvirtualVoidMethodV
2213 , HOTSPOT_JNI_CALLNONVIRTUALVOIDMETHODV_RETURN());
2214 DT_VOID_RETURN_MARK_DECL(CallNonvirtualVoidMethodA
2215 , HOTSPOT_JNI_CALLNONVIRTUALVOIDMETHODA_RETURN());
2216 #endif /* USDT2 */
2217
2218 JNI_ENTRY(void, jni_CallNonvirtualVoidMethod(JNIEnv *env, jobject obj, jclass cls, jmethodID methodID, ...))
2219 JNIWrapper("CallNonvirtualVoidMethod");
2220
2221 #ifndef USDT2
2222 DTRACE_PROBE4(hotspot_jni, CallNonvirtualVoidMethod__entry,
2223 env, obj, cls, methodID);
2224 #else /* USDT2 */
2225 HOTSPOT_JNI_CALLNONVIRTUALVOIDMETHOD_ENTRY(
2226 env, obj, cls, (uintptr_t) methodID);
2227 #endif /* USDT2 */
2228 DT_VOID_RETURN_MARK(CallNonvirtualVoidMethod);
2229
2230 va_list args;
2231 va_start(args, methodID);
2232 JavaValue jvalue(T_VOID);
2233 JNI_ArgumentPusherVaArg ap(methodID, args);
2234 jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK);
2235 va_end(args);
2236 JNI_END
2237
2238
2239 JNI_ENTRY(void, jni_CallNonvirtualVoidMethodV(JNIEnv *env, jobject obj, jclass cls, jmethodID methodID, va_list args))
2240 JNIWrapper("CallNonvirtualVoidMethodV");
2241
2242 #ifndef USDT2
2243 DTRACE_PROBE4(hotspot_jni, CallNonvirtualVoidMethodV__entry,
2244 env, obj, cls, methodID);
2245 #else /* USDT2 */
2246 HOTSPOT_JNI_CALLNONVIRTUALVOIDMETHODV_ENTRY(
2247 env, obj, cls, (uintptr_t) methodID);
2248 #endif /* USDT2 */
2249 DT_VOID_RETURN_MARK(CallNonvirtualVoidMethodV);
2250
2251 JavaValue jvalue(T_VOID);
2252 JNI_ArgumentPusherVaArg ap(methodID, args);
2253 jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK);
2254 JNI_END
2255
2256
2257 JNI_ENTRY(void, jni_CallNonvirtualVoidMethodA(JNIEnv *env, jobject obj, jclass cls, jmethodID methodID, const jvalue *args))
2258 JNIWrapper("CallNonvirtualVoidMethodA");
2259 #ifndef USDT2
2260 DTRACE_PROBE4(hotspot_jni, CallNonvirtualVoidMethodA__entry,
2261 env, obj, cls, methodID);
2262 #else /* USDT2 */
2263 HOTSPOT_JNI_CALLNONVIRTUALVOIDMETHODA_ENTRY(
2264 env, obj, cls, (uintptr_t) methodID);
2265 #endif /* USDT2 */
2266 DT_VOID_RETURN_MARK(CallNonvirtualVoidMethodA);
2267 JavaValue jvalue(T_VOID);
2268 JNI_ArgumentPusherArray ap(methodID, args);
2269 jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK);
2270 JNI_END
2271
2272
2273 #ifndef USDT2
2274 #define DEFINE_CALLSTATICMETHOD(ResultType, Result, Tag) \
2275 \
2276 DT_RETURN_MARK_DECL_FOR(Result, CallStatic##Result##Method, ResultType);\
2277 DT_RETURN_MARK_DECL_FOR(Result, CallStatic##Result##MethodV, ResultType);\
2278 DT_RETURN_MARK_DECL_FOR(Result, CallStatic##Result##MethodA, ResultType);\
2279 \
2280 JNI_ENTRY(ResultType, \
2281 jni_CallStatic##Result##Method(JNIEnv *env, jclass cls, jmethodID methodID, ...)) \
2282 JNIWrapper("CallStatic" XSTR(Result) "Method"); \
2283 \
2284 DTRACE_PROBE3(hotspot_jni, CallStatic##Result##Method__entry, env, cls, methodID);\
2285 ResultType ret = 0;\
2286 DT_RETURN_MARK_FOR(Result, CallStatic##Result##Method, ResultType, \
2287 (const ResultType&)ret);\
2288 \
2289 va_list args; \
2290 va_start(args, methodID); \
2291 JavaValue jvalue(Tag); \
2292 JNI_ArgumentPusherVaArg ap(methodID, args); \
2293 jni_invoke_static(env, &jvalue, NULL, JNI_STATIC, methodID, &ap, CHECK_0); \
2294 va_end(args); \
2295 ret = jvalue.get_##ResultType(); \
2296 return ret;\
2297 JNI_END \
2298 \
2299 JNI_ENTRY(ResultType, \
2300 jni_CallStatic##Result##MethodV(JNIEnv *env, jclass cls, jmethodID methodID, va_list args)) \
2301 JNIWrapper("CallStatic" XSTR(Result) "MethodV"); \
2302 DTRACE_PROBE3(hotspot_jni, CallStatic##Result##MethodV__entry, env, cls, methodID);\
2303 ResultType ret = 0;\
2304 DT_RETURN_MARK_FOR(Result, CallStatic##Result##MethodV, ResultType, \
2305 (const ResultType&)ret);\
2306 \
2307 JavaValue jvalue(Tag); \
2308 JNI_ArgumentPusherVaArg ap(methodID, args); \
2309 jni_invoke_static(env, &jvalue, NULL, JNI_STATIC, methodID, &ap, CHECK_0); \
2310 ret = jvalue.get_##ResultType(); \
2311 return ret;\
2312 JNI_END \
2313 \
2314 JNI_ENTRY(ResultType, \
2315 jni_CallStatic##Result##MethodA(JNIEnv *env, jclass cls, jmethodID methodID, const jvalue *args)) \
2316 JNIWrapper("CallStatic" XSTR(Result) "MethodA"); \
2317 DTRACE_PROBE3(hotspot_jni, CallStatic##Result##MethodA__entry, env, cls, methodID);\
2318 ResultType ret = 0;\
2319 DT_RETURN_MARK_FOR(Result, CallStatic##Result##MethodA, ResultType, \
2320 (const ResultType&)ret);\
2321 \
2322 JavaValue jvalue(Tag); \
2323 JNI_ArgumentPusherArray ap(methodID, args); \
2324 jni_invoke_static(env, &jvalue, NULL, JNI_STATIC, methodID, &ap, CHECK_0); \
2325 ret = jvalue.get_##ResultType(); \
2326 return ret;\
2327 JNI_END
2328
2329 // the runtime type of subword integral basic types is integer
2330 DEFINE_CALLSTATICMETHOD(jboolean, Boolean, T_BOOLEAN)
2331 DEFINE_CALLSTATICMETHOD(jbyte, Byte, T_BYTE)
2332 DEFINE_CALLSTATICMETHOD(jchar, Char, T_CHAR)
2333 DEFINE_CALLSTATICMETHOD(jshort, Short, T_SHORT)
2334
2335 DEFINE_CALLSTATICMETHOD(jobject, Object, T_OBJECT)
2336 DEFINE_CALLSTATICMETHOD(jint, Int, T_INT)
2337 DEFINE_CALLSTATICMETHOD(jlong, Long, T_LONG)
2338 DEFINE_CALLSTATICMETHOD(jfloat, Float, T_FLOAT)
2339 DEFINE_CALLSTATICMETHOD(jdouble, Double, T_DOUBLE)
2340
2341
2342 DT_VOID_RETURN_MARK_DECL(CallStaticVoidMethod);
2343 DT_VOID_RETURN_MARK_DECL(CallStaticVoidMethodV);
2344 DT_VOID_RETURN_MARK_DECL(CallStaticVoidMethodA);
2345
2346 #else /* USDT2 */
2347
2348 #define DEFINE_CALLSTATICMETHOD(ResultType, Result, Tag \
2349 , EntryProbe, ResultProbe) \
2350 \
2351 DT_RETURN_MARK_DECL_FOR(Result, CallStatic##Result##Method, ResultType \
2352 , ResultProbe); \
2353 \
2354 JNI_ENTRY(ResultType, \
2355 jni_CallStatic##Result##Method(JNIEnv *env, jclass cls, jmethodID methodID, ...)) \
2356 JNIWrapper("CallStatic" XSTR(Result) "Method"); \
2357 \
2358 EntryProbe; \
2359 ResultType ret = 0;\
2360 DT_RETURN_MARK_FOR(Result, CallStatic##Result##Method, ResultType, \
2361 (const ResultType&)ret);\
2362 \
2363 va_list args; \
2364 va_start(args, methodID); \
2365 JavaValue jvalue(Tag); \
2366 JNI_ArgumentPusherVaArg ap(methodID, args); \
2367 jni_invoke_static(env, &jvalue, NULL, JNI_STATIC, methodID, &ap, CHECK_0); \
2368 va_end(args); \
2369 ret = jvalue.get_##ResultType(); \
2370 return ret;\
2371 JNI_END
2372
2373 // the runtime type of subword integral basic types is integer
2374 DEFINE_CALLSTATICMETHOD(jboolean, Boolean, T_BOOLEAN
2375 , HOTSPOT_JNI_CALLSTATICBOOLEANMETHOD_ENTRY(env, cls, (uintptr_t)methodID),
2376 HOTSPOT_JNI_CALLSTATICBOOLEANMETHOD_RETURN(_ret_ref));
2377 DEFINE_CALLSTATICMETHOD(jbyte, Byte, T_BYTE
2378 , HOTSPOT_JNI_CALLSTATICBYTEMETHOD_ENTRY(env, cls, (uintptr_t)methodID),
2379 HOTSPOT_JNI_CALLSTATICBYTEMETHOD_RETURN(_ret_ref));
2380 DEFINE_CALLSTATICMETHOD(jchar, Char, T_CHAR
2381 , HOTSPOT_JNI_CALLSTATICCHARMETHOD_ENTRY(env, cls, (uintptr_t)methodID),
2382 HOTSPOT_JNI_CALLSTATICCHARMETHOD_RETURN(_ret_ref));
2383 DEFINE_CALLSTATICMETHOD(jshort, Short, T_SHORT
2384 , HOTSPOT_JNI_CALLSTATICSHORTMETHOD_ENTRY(env, cls, (uintptr_t)methodID),
2385 HOTSPOT_JNI_CALLSTATICSHORTMETHOD_RETURN(_ret_ref));
2386
2387 DEFINE_CALLSTATICMETHOD(jobject, Object, T_OBJECT
2388 , HOTSPOT_JNI_CALLSTATICOBJECTMETHOD_ENTRY(env, cls, (uintptr_t)methodID),
2389 HOTSPOT_JNI_CALLSTATICOBJECTMETHOD_RETURN(_ret_ref));
2390 DEFINE_CALLSTATICMETHOD(jint, Int, T_INT
2391 , HOTSPOT_JNI_CALLSTATICINTMETHOD_ENTRY(env, cls, (uintptr_t)methodID),
2392 HOTSPOT_JNI_CALLSTATICINTMETHOD_RETURN(_ret_ref));
2393 DEFINE_CALLSTATICMETHOD(jlong, Long, T_LONG
2394 , HOTSPOT_JNI_CALLSTATICLONGMETHOD_ENTRY(env, cls, (uintptr_t)methodID),
2395 HOTSPOT_JNI_CALLSTATICLONGMETHOD_RETURN(_ret_ref));
2396 // Float and double probes don't return value because dtrace doesn't currently support it
2397 DEFINE_CALLSTATICMETHOD(jfloat, Float, T_FLOAT
2398 , HOTSPOT_JNI_CALLSTATICFLOATMETHOD_ENTRY(env, cls, (uintptr_t)methodID),
2399 HOTSPOT_JNI_CALLSTATICFLOATMETHOD_RETURN());
2400 DEFINE_CALLSTATICMETHOD(jdouble, Double, T_DOUBLE
2401 , HOTSPOT_JNI_CALLSTATICDOUBLEMETHOD_ENTRY(env, cls, (uintptr_t)methodID),
2402 HOTSPOT_JNI_CALLSTATICDOUBLEMETHOD_RETURN());
2403
2404 #define DEFINE_CALLSTATICMETHODV(ResultType, Result, Tag \
2405 , EntryProbe, ResultProbe) \
2406 \
2407 DT_RETURN_MARK_DECL_FOR(Result, CallStatic##Result##MethodV, ResultType \
2408 , ResultProbe); \
2409 \
2410 JNI_ENTRY(ResultType, \
2411 jni_CallStatic##Result##MethodV(JNIEnv *env, jclass cls, jmethodID methodID, va_list args)) \
2412 JNIWrapper("CallStatic" XSTR(Result) "MethodV"); \
2413 \
2414 EntryProbe; \
2415 ResultType ret = 0;\
2416 DT_RETURN_MARK_FOR(Result, CallStatic##Result##MethodV, ResultType, \
2417 (const ResultType&)ret);\
2418 \
2419 JavaValue jvalue(Tag); \
2420 JNI_ArgumentPusherVaArg ap(methodID, args); \
2421 /* Make sure class is initialized before trying to invoke its method */ \
2422 KlassHandle k(THREAD, java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls))); \
2423 Klass::cast(k())->initialize(CHECK_0); \
2424 jni_invoke_static(env, &jvalue, NULL, JNI_STATIC, methodID, &ap, CHECK_0); \
2425 va_end(args); \
2426 ret = jvalue.get_##ResultType(); \
2427 return ret;\
2428 JNI_END
2429
2430 // the runtime type of subword integral basic types is integer
2431 DEFINE_CALLSTATICMETHODV(jboolean, Boolean, T_BOOLEAN
2432 , HOTSPOT_JNI_CALLSTATICBOOLEANMETHODV_ENTRY(env, cls, (uintptr_t)methodID),
2433 HOTSPOT_JNI_CALLSTATICBOOLEANMETHODV_RETURN(_ret_ref));
2434 DEFINE_CALLSTATICMETHODV(jbyte, Byte, T_BYTE
2435 , HOTSPOT_JNI_CALLSTATICBYTEMETHODV_ENTRY(env, cls, (uintptr_t)methodID),
2436 HOTSPOT_JNI_CALLSTATICBYTEMETHODV_RETURN(_ret_ref));
2437 DEFINE_CALLSTATICMETHODV(jchar, Char, T_CHAR
2438 , HOTSPOT_JNI_CALLSTATICCHARMETHODV_ENTRY(env, cls, (uintptr_t)methodID),
2439 HOTSPOT_JNI_CALLSTATICCHARMETHODV_RETURN(_ret_ref));
2440 DEFINE_CALLSTATICMETHODV(jshort, Short, T_SHORT
2441 , HOTSPOT_JNI_CALLSTATICSHORTMETHODV_ENTRY(env, cls, (uintptr_t)methodID),
2442 HOTSPOT_JNI_CALLSTATICSHORTMETHODV_RETURN(_ret_ref));
2443
2444 DEFINE_CALLSTATICMETHODV(jobject, Object, T_OBJECT
2445 , HOTSPOT_JNI_CALLSTATICOBJECTMETHODV_ENTRY(env, cls, (uintptr_t)methodID),
2446 HOTSPOT_JNI_CALLSTATICOBJECTMETHODV_RETURN(_ret_ref));
2447 DEFINE_CALLSTATICMETHODV(jint, Int, T_INT
2448 , HOTSPOT_JNI_CALLSTATICINTMETHODV_ENTRY(env, cls, (uintptr_t)methodID),
2449 HOTSPOT_JNI_CALLSTATICINTMETHODV_RETURN(_ret_ref));
2450 DEFINE_CALLSTATICMETHODV(jlong, Long, T_LONG
2451 , HOTSPOT_JNI_CALLSTATICLONGMETHODV_ENTRY(env, cls, (uintptr_t)methodID),
2452 HOTSPOT_JNI_CALLSTATICLONGMETHODV_RETURN(_ret_ref));
2453 // Float and double probes don't return value because dtrace doesn't currently support it
2454 DEFINE_CALLSTATICMETHODV(jfloat, Float, T_FLOAT
2455 , HOTSPOT_JNI_CALLSTATICFLOATMETHODV_ENTRY(env, cls, (uintptr_t)methodID),
2456 HOTSPOT_JNI_CALLSTATICFLOATMETHODV_RETURN());
2457 DEFINE_CALLSTATICMETHODV(jdouble, Double, T_DOUBLE
2458 , HOTSPOT_JNI_CALLSTATICDOUBLEMETHODV_ENTRY(env, cls, (uintptr_t)methodID),
2459 HOTSPOT_JNI_CALLSTATICDOUBLEMETHODV_RETURN());
2460
2461 #define DEFINE_CALLSTATICMETHODA(ResultType, Result, Tag \
2462 , EntryProbe, ResultProbe) \
2463 \
2464 DT_RETURN_MARK_DECL_FOR(Result, CallStatic##Result##MethodA, ResultType \
2465 , ResultProbe); \
2466 \
2467 JNI_ENTRY(ResultType, \
2468 jni_CallStatic##Result##MethodA(JNIEnv *env, jclass cls, jmethodID methodID, const jvalue *args)) \
2469 JNIWrapper("CallStatic" XSTR(Result) "MethodA"); \
2470 \
2471 EntryProbe; \
2472 ResultType ret = 0;\
2473 DT_RETURN_MARK_FOR(Result, CallStatic##Result##MethodA, ResultType, \
2474 (const ResultType&)ret);\
2475 \
2476 JavaValue jvalue(Tag); \
2477 JNI_ArgumentPusherArray ap(methodID, args); \
2478 jni_invoke_static(env, &jvalue, NULL, JNI_STATIC, methodID, &ap, CHECK_0); \
2479 ret = jvalue.get_##ResultType(); \
2480 return ret;\
2481 JNI_END
2482
2483 // the runtime type of subword integral basic types is integer
2484 DEFINE_CALLSTATICMETHODA(jboolean, Boolean, T_BOOLEAN
2485 , HOTSPOT_JNI_CALLSTATICBOOLEANMETHODA_ENTRY(env, cls, (uintptr_t)methodID),
2486 HOTSPOT_JNI_CALLSTATICBOOLEANMETHODA_RETURN(_ret_ref));
2487 DEFINE_CALLSTATICMETHODA(jbyte, Byte, T_BYTE
2488 , HOTSPOT_JNI_CALLSTATICBYTEMETHODA_ENTRY(env, cls, (uintptr_t)methodID),
2489 HOTSPOT_JNI_CALLSTATICBYTEMETHODA_RETURN(_ret_ref));
2490 DEFINE_CALLSTATICMETHODA(jchar, Char, T_CHAR
2491 , HOTSPOT_JNI_CALLSTATICCHARMETHODA_ENTRY(env, cls, (uintptr_t)methodID),
2492 HOTSPOT_JNI_CALLSTATICCHARMETHODA_RETURN(_ret_ref));
2493 DEFINE_CALLSTATICMETHODA(jshort, Short, T_SHORT
2494 , HOTSPOT_JNI_CALLSTATICSHORTMETHODA_ENTRY(env, cls, (uintptr_t)methodID),
2495 HOTSPOT_JNI_CALLSTATICSHORTMETHODA_RETURN(_ret_ref));
2496
2497 DEFINE_CALLSTATICMETHODA(jobject, Object, T_OBJECT
2498 , HOTSPOT_JNI_CALLSTATICOBJECTMETHODA_ENTRY(env, cls, (uintptr_t)methodID),
2499 HOTSPOT_JNI_CALLSTATICOBJECTMETHODA_RETURN(_ret_ref));
2500 DEFINE_CALLSTATICMETHODA(jint, Int, T_INT
2501 , HOTSPOT_JNI_CALLSTATICINTMETHODA_ENTRY(env, cls, (uintptr_t)methodID),
2502 HOTSPOT_JNI_CALLSTATICINTMETHODA_RETURN(_ret_ref));
2503 DEFINE_CALLSTATICMETHODA(jlong, Long, T_LONG
2504 , HOTSPOT_JNI_CALLSTATICLONGMETHODA_ENTRY(env, cls, (uintptr_t)methodID),
2505 HOTSPOT_JNI_CALLSTATICLONGMETHODA_RETURN(_ret_ref));
2506 // Float and double probes don't return value because dtrace doesn't currently support it
2507 DEFINE_CALLSTATICMETHODA(jfloat, Float, T_FLOAT
2508 , HOTSPOT_JNI_CALLSTATICFLOATMETHODA_ENTRY(env, cls, (uintptr_t)methodID),
2509 HOTSPOT_JNI_CALLSTATICFLOATMETHODA_RETURN());
2510 DEFINE_CALLSTATICMETHODA(jdouble, Double, T_DOUBLE
2511 , HOTSPOT_JNI_CALLSTATICDOUBLEMETHODA_ENTRY(env, cls, (uintptr_t)methodID),
2512 HOTSPOT_JNI_CALLSTATICDOUBLEMETHODA_RETURN());
2513
2514 DT_VOID_RETURN_MARK_DECL(CallStaticVoidMethod
2515 , HOTSPOT_JNI_CALLSTATICVOIDMETHOD_RETURN());
2516 DT_VOID_RETURN_MARK_DECL(CallStaticVoidMethodV
2517 , HOTSPOT_JNI_CALLSTATICVOIDMETHODV_RETURN());
2518 DT_VOID_RETURN_MARK_DECL(CallStaticVoidMethodA
2519 , HOTSPOT_JNI_CALLSTATICVOIDMETHODA_RETURN());
2520 #endif /* USDT2 */
2521
2522 JNI_ENTRY(void, jni_CallStaticVoidMethod(JNIEnv *env, jclass cls, jmethodID methodID, ...))
2523 JNIWrapper("CallStaticVoidMethod");
2524 #ifndef USDT2
2525 DTRACE_PROBE3(hotspot_jni, CallStaticVoidMethod__entry, env, cls, methodID);
2526 #else /* USDT2 */
2527 HOTSPOT_JNI_CALLSTATICVOIDMETHOD_ENTRY(
2528 env, cls, (uintptr_t) methodID);
2529 #endif /* USDT2 */
2530 DT_VOID_RETURN_MARK(CallStaticVoidMethod);
2531
2532 va_list args;
2533 va_start(args, methodID);
2534 JavaValue jvalue(T_VOID);
2535 JNI_ArgumentPusherVaArg ap(methodID, args);
2536 jni_invoke_static(env, &jvalue, NULL, JNI_STATIC, methodID, &ap, CHECK);
2537 va_end(args);
2538 JNI_END
2539
2540
2541 JNI_ENTRY(void, jni_CallStaticVoidMethodV(JNIEnv *env, jclass cls, jmethodID methodID, va_list args))
2542 JNIWrapper("CallStaticVoidMethodV");
2543 #ifndef USDT2
2544 DTRACE_PROBE3(hotspot_jni, CallStaticVoidMethodV__entry, env, cls, methodID);
2545 #else /* USDT2 */
2546 HOTSPOT_JNI_CALLSTATICVOIDMETHODV_ENTRY(
2547 env, cls, (uintptr_t) methodID);
2548 #endif /* USDT2 */
2549 DT_VOID_RETURN_MARK(CallStaticVoidMethodV);
2550
2551 JavaValue jvalue(T_VOID);
2552 JNI_ArgumentPusherVaArg ap(methodID, args);
2553 jni_invoke_static(env, &jvalue, NULL, JNI_STATIC, methodID, &ap, CHECK);
2554 JNI_END
2555
2556
2557 JNI_ENTRY(void, jni_CallStaticVoidMethodA(JNIEnv *env, jclass cls, jmethodID methodID, const jvalue *args))
2558 JNIWrapper("CallStaticVoidMethodA");
2559 #ifndef USDT2
2560 DTRACE_PROBE3(hotspot_jni, CallStaticVoidMethodA__entry, env, cls, methodID);
2561 #else /* USDT2 */
2562 HOTSPOT_JNI_CALLSTATICVOIDMETHODA_ENTRY(
2563 env, cls, (uintptr_t) methodID);
2564 #endif /* USDT2 */
2565 DT_VOID_RETURN_MARK(CallStaticVoidMethodA);
2566
2567 JavaValue jvalue(T_VOID);
2568 JNI_ArgumentPusherArray ap(methodID, args);
2569 jni_invoke_static(env, &jvalue, NULL, JNI_STATIC, methodID, &ap, CHECK);
2570 JNI_END
2571
2572
2573 //
2574 // Accessing Fields
2575 //
2576
2577
2578 #ifndef USDT2
2579 DT_RETURN_MARK_DECL(GetFieldID, jfieldID);
2580 #else /* USDT2 */
2581 DT_RETURN_MARK_DECL(GetFieldID, jfieldID
2582 , HOTSPOT_JNI_GETFIELDID_RETURN((uintptr_t)_ret_ref));
2583 #endif /* USDT2 */
2584
2585 JNI_ENTRY(jfieldID, jni_GetFieldID(JNIEnv *env, jclass clazz,
2586 const char *name, const char *sig))
2587 JNIWrapper("GetFieldID");
2588 #ifndef USDT2
2589 DTRACE_PROBE4(hotspot_jni, GetFieldID__entry, env, clazz, name, sig);
2590 #else /* USDT2 */
2591 HOTSPOT_JNI_GETFIELDID_ENTRY(
2592 env, clazz, (char *) name, (char *) sig);
2593 #endif /* USDT2 */
2594 jfieldID ret = 0;
2595 DT_RETURN_MARK(GetFieldID, jfieldID, (const jfieldID&)ret);
2596
2597 // The class should have been loaded (we have an instance of the class
2598 // passed in) so the field and signature should already be in the symbol
2599 // table. If they're not there, the field doesn't exist.
2600 TempNewSymbol fieldname = SymbolTable::probe(name, (int)strlen(name));
2601 TempNewSymbol signame = SymbolTable::probe(sig, (int)strlen(sig));
2602 if (fieldname == NULL || signame == NULL) {
2603 THROW_MSG_0(vmSymbols::java_lang_NoSuchFieldError(), (char*) name);
2604 }
2605 KlassHandle k(THREAD,
2606 java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(clazz)));
2607 // Make sure class is initialized before handing id's out to fields
2608 Klass::cast(k())->initialize(CHECK_NULL);
2609
2610 fieldDescriptor fd;
2611 if (!Klass::cast(k())->oop_is_instance() ||
2612 !instanceKlass::cast(k())->find_field(fieldname, signame, false, &fd)) {
2613 THROW_MSG_0(vmSymbols::java_lang_NoSuchFieldError(), (char*) name);
2614 }
2615
2616 // A jfieldID for a non-static field is simply the offset of the field within the instanceOop
2617 // It may also have hash bits for k, if VerifyJNIFields is turned on.
2618 ret = jfieldIDWorkaround::to_instance_jfieldID(k(), fd.offset());
2619 return ret;
2620 JNI_END
2621
2622
2623 JNI_ENTRY(jobject, jni_GetObjectField(JNIEnv *env, jobject obj, jfieldID fieldID))
2624 JNIWrapper("GetObjectField");
2625 #ifndef USDT2
2626 DTRACE_PROBE3(hotspot_jni, GetObjectField__entry, env, obj, fieldID);
2627 #else /* USDT2 */
2628 HOTSPOT_JNI_GETOBJECTFIELD_ENTRY(
2629 env, obj, (uintptr_t) fieldID);
2630 #endif /* USDT2 */
2631 oop o = JNIHandles::resolve_non_null(obj);
2632 klassOop k = o->klass();
2633 int offset = jfieldIDWorkaround::from_instance_jfieldID(k, fieldID);
2634 // Keep JVMTI addition small and only check enabled flag here.
2635 // jni_GetField_probe() assumes that is okay to create handles.
2636 if (JvmtiExport::should_post_field_access()) {
2637 o = JvmtiExport::jni_GetField_probe(thread, obj, o, k, fieldID, false);
2638 }
2639 jobject ret = JNIHandles::make_local(env, o->obj_field(offset));
2640 #ifndef SERIALGC
2641 // If G1 is enabled and we are accessing the value of the referent
2642 // field in a reference object then we need to register a non-null
2643 // referent with the SATB barrier.
2644 if (UseG1GC) {
2645 bool needs_barrier = false;
2646
2647 if (ret != NULL &&
2648 offset == java_lang_ref_Reference::referent_offset &&
2649 instanceKlass::cast(k)->reference_type() != REF_NONE) {
2650 assert(instanceKlass::cast(k)->is_subclass_of(SystemDictionary::Reference_klass()), "sanity");
2651 needs_barrier = true;
2652 }
2653
2654 if (needs_barrier) {
2655 oop referent = JNIHandles::resolve(ret);
2656 G1SATBCardTableModRefBS::enqueue(referent);
2657 }
2658 }
2659 #endif // SERIALGC
2660 #ifndef USDT2
2661 DTRACE_PROBE1(hotspot_jni, GetObjectField__return, ret);
2662 #else /* USDT2 */
2663 HOTSPOT_JNI_GETOBJECTFIELD_RETURN(
2664 ret);
2665 #endif /* USDT2 */
2666 return ret;
2667 JNI_END
2668
2669
2670 #ifndef USDT2
2671 #define DEFINE_GETFIELD(Return,Fieldname,Result) \
2672 \
2673 DT_RETURN_MARK_DECL_FOR(Result, Get##Result##Field, Return);\
2674 \
2675 JNI_QUICK_ENTRY(Return, jni_Get##Result##Field(JNIEnv *env, jobject obj, jfieldID fieldID)) \
2676 JNIWrapper("Get" XSTR(Result) "Field"); \
2677 \
2678 DTRACE_PROBE3(hotspot_jni, Get##Result##Field__entry, env, obj, fieldID);\
2679 Return ret = 0;\
2680 DT_RETURN_MARK_FOR(Result, Get##Result##Field, Return, (const Return&)ret);\
2681 \
2682 oop o = JNIHandles::resolve_non_null(obj); \
2683 klassOop k = o->klass(); \
2684 int offset = jfieldIDWorkaround::from_instance_jfieldID(k, fieldID); \
2685 /* Keep JVMTI addition small and only check enabled flag here. */ \
2686 /* jni_GetField_probe_nh() assumes that is not okay to create handles */ \
2687 /* and creates a ResetNoHandleMark. */ \
2688 if (JvmtiExport::should_post_field_access()) { \
2689 o = JvmtiExport::jni_GetField_probe_nh(thread, obj, o, k, fieldID, false); \
2690 } \
2691 ret = o->Fieldname##_field(offset); \
2692 return ret; \
2693 JNI_END
2694
2695 DEFINE_GETFIELD(jboolean, bool, Boolean)
2696 DEFINE_GETFIELD(jbyte, byte, Byte)
2697 DEFINE_GETFIELD(jchar, char, Char)
2698 DEFINE_GETFIELD(jshort, short, Short)
2699 DEFINE_GETFIELD(jint, int, Int)
2700 DEFINE_GETFIELD(jlong, long, Long)
2701 DEFINE_GETFIELD(jfloat, float, Float)
2702 DEFINE_GETFIELD(jdouble, double, Double)
2703
2704 #else /* USDT2 */
2705
2706 #define DEFINE_GETFIELD(Return,Fieldname,Result \
2707 , EntryProbe, ReturnProbe) \
2708 \
2709 DT_RETURN_MARK_DECL_FOR(Result, Get##Result##Field, Return \
2710 , ReturnProbe); \
2711 \
2712 JNI_QUICK_ENTRY(Return, jni_Get##Result##Field(JNIEnv *env, jobject obj, jfieldID fieldID)) \
2713 JNIWrapper("Get" XSTR(Result) "Field"); \
2714 \
2715 EntryProbe; \
2716 Return ret = 0;\
2717 DT_RETURN_MARK_FOR(Result, Get##Result##Field, Return, (const Return&)ret);\
2718 \
2719 oop o = JNIHandles::resolve_non_null(obj); \
2720 klassOop k = o->klass(); \
2721 int offset = jfieldIDWorkaround::from_instance_jfieldID(k, fieldID); \
2722 /* Keep JVMTI addition small and only check enabled flag here. */ \
2723 /* jni_GetField_probe_nh() assumes that is not okay to create handles */ \
2724 /* and creates a ResetNoHandleMark. */ \
2725 if (JvmtiExport::should_post_field_access()) { \
2726 o = JvmtiExport::jni_GetField_probe_nh(thread, obj, o, k, fieldID, false); \
2727 } \
2728 ret = o->Fieldname##_field(offset); \
2729 return ret; \
2730 JNI_END
2731
2732 DEFINE_GETFIELD(jboolean, bool, Boolean
2733 , HOTSPOT_JNI_GETBOOLEANFIELD_ENTRY(env, obj, (uintptr_t)fieldID),
2734 HOTSPOT_JNI_GETBOOLEANFIELD_RETURN(_ret_ref))
2735 DEFINE_GETFIELD(jbyte, byte, Byte
2736 , HOTSPOT_JNI_GETBYTEFIELD_ENTRY(env, obj, (uintptr_t)fieldID),
2737 HOTSPOT_JNI_GETBYTEFIELD_RETURN(_ret_ref))
2738 DEFINE_GETFIELD(jchar, char, Char
2739 , HOTSPOT_JNI_GETCHARFIELD_ENTRY(env, obj, (uintptr_t)fieldID),
2740 HOTSPOT_JNI_GETCHARFIELD_RETURN(_ret_ref))
2741 DEFINE_GETFIELD(jshort, short, Short
2742 , HOTSPOT_JNI_GETSHORTFIELD_ENTRY(env, obj, (uintptr_t)fieldID),
2743 HOTSPOT_JNI_GETSHORTFIELD_RETURN(_ret_ref))
2744 DEFINE_GETFIELD(jint, int, Int
2745 , HOTSPOT_JNI_GETINTFIELD_ENTRY(env, obj, (uintptr_t)fieldID),
2746 HOTSPOT_JNI_GETINTFIELD_RETURN(_ret_ref))
2747 DEFINE_GETFIELD(jlong, long, Long
2748 , HOTSPOT_JNI_GETLONGFIELD_ENTRY(env, obj, (uintptr_t)fieldID),
2749 HOTSPOT_JNI_GETLONGFIELD_RETURN(_ret_ref))
2750 // Float and double probes don't return value because dtrace doesn't currently support it
2751 DEFINE_GETFIELD(jfloat, float, Float
2752 , HOTSPOT_JNI_GETFLOATFIELD_ENTRY(env, obj, (uintptr_t)fieldID),
2753 HOTSPOT_JNI_GETFLOATFIELD_RETURN())
2754 DEFINE_GETFIELD(jdouble, double, Double
2755 , HOTSPOT_JNI_GETDOUBLEFIELD_ENTRY(env, obj, (uintptr_t)fieldID),
2756 HOTSPOT_JNI_GETDOUBLEFIELD_RETURN())
2757 #endif /* USDT2 */
2758
2759 address jni_GetBooleanField_addr() {
2760 return (address)jni_GetBooleanField;
2761 }
2762 address jni_GetByteField_addr() {
2763 return (address)jni_GetByteField;
2764 }
2765 address jni_GetCharField_addr() {
2766 return (address)jni_GetCharField;
2767 }
2768 address jni_GetShortField_addr() {
2769 return (address)jni_GetShortField;
2770 }
2771 address jni_GetIntField_addr() {
2772 return (address)jni_GetIntField;
2773 }
2774 address jni_GetLongField_addr() {
2775 return (address)jni_GetLongField;
2776 }
2777 address jni_GetFloatField_addr() {
2778 return (address)jni_GetFloatField;
2779 }
2780 address jni_GetDoubleField_addr() {
2781 return (address)jni_GetDoubleField;
2782 }
2783
2784 JNI_QUICK_ENTRY(void, jni_SetObjectField(JNIEnv *env, jobject obj, jfieldID fieldID, jobject value))
2785 JNIWrapper("SetObjectField");
2786 #ifndef USDT2
2787 DTRACE_PROBE4(hotspot_jni, SetObjectField__entry, env, obj, fieldID, value);
2788 #else /* USDT2 */
2789 HOTSPOT_JNI_SETOBJECTFIELD_ENTRY(
2790 env, obj, (uintptr_t) fieldID, value);
2791 #endif /* USDT2 */
2792 oop o = JNIHandles::resolve_non_null(obj);
2793 klassOop k = o->klass();
2794 int offset = jfieldIDWorkaround::from_instance_jfieldID(k, fieldID);
2795 // Keep JVMTI addition small and only check enabled flag here.
2796 // jni_SetField_probe_nh() assumes that is not okay to create handles
2797 // and creates a ResetNoHandleMark.
2798 if (JvmtiExport::should_post_field_modification()) {
2799 jvalue field_value;
2800 field_value.l = value;
2801 o = JvmtiExport::jni_SetField_probe_nh(thread, obj, o, k, fieldID, false, 'L', (jvalue *)&field_value);
2802 }
2803 o->obj_field_put(offset, JNIHandles::resolve(value));
2804 #ifndef USDT2
2805 DTRACE_PROBE(hotspot_jni, SetObjectField__return);
2806 #else /* USDT2 */
2807 HOTSPOT_JNI_SETOBJECTFIELD_RETURN(
2808 );
2809 #endif /* USDT2 */
2810 JNI_END
2811
2812 #ifndef USDT2
2813 #define DEFINE_SETFIELD(Argument,Fieldname,Result,SigType,unionType) \
2814 \
2815 JNI_QUICK_ENTRY(void, jni_Set##Result##Field(JNIEnv *env, jobject obj, jfieldID fieldID, Argument value)) \
2816 JNIWrapper("Set" XSTR(Result) "Field"); \
2817 \
2818 HS_DTRACE_PROBE_CDECL_N(hotspot_jni, Set##Result##Field__entry, \
2819 ( JNIEnv*, jobject, jfieldID FP_SELECT_##Result(COMMA Argument,/*empty*/) ) ); \
2820 HS_DTRACE_PROBE_N(hotspot_jni, Set##Result##Field__entry, \
2821 ( env, obj, fieldID FP_SELECT_##Result(COMMA value,/*empty*/) ) ); \
2822 \
2823 oop o = JNIHandles::resolve_non_null(obj); \
2824 klassOop k = o->klass(); \
2825 int offset = jfieldIDWorkaround::from_instance_jfieldID(k, fieldID); \
2826 /* Keep JVMTI addition small and only check enabled flag here. */ \
2827 /* jni_SetField_probe_nh() assumes that is not okay to create handles */ \
2828 /* and creates a ResetNoHandleMark. */ \
2829 if (JvmtiExport::should_post_field_modification()) { \
2830 jvalue field_value; \
2831 field_value.unionType = value; \
2832 o = JvmtiExport::jni_SetField_probe_nh(thread, obj, o, k, fieldID, false, SigType, (jvalue *)&field_value); \
2833 } \
2834 o->Fieldname##_field_put(offset, value); \
2835 DTRACE_PROBE(hotspot_jni, Set##Result##Field__return);\
2836 JNI_END
2837
2838 DEFINE_SETFIELD(jboolean, bool, Boolean, 'Z', z)
2839 DEFINE_SETFIELD(jbyte, byte, Byte, 'B', b)
2840 DEFINE_SETFIELD(jchar, char, Char, 'C', c)
2841 DEFINE_SETFIELD(jshort, short, Short, 'S', s)
2842 DEFINE_SETFIELD(jint, int, Int, 'I', i)
2843 DEFINE_SETFIELD(jlong, long, Long, 'J', j)
2844 DEFINE_SETFIELD(jfloat, float, Float, 'F', f)
2845 DEFINE_SETFIELD(jdouble, double, Double, 'D', d)
2846
2847 #else /* USDT2 */
2848
2849 #define DEFINE_SETFIELD(Argument,Fieldname,Result,SigType,unionType \
2850 , EntryProbe, ReturnProbe) \
2851 \
2852 JNI_QUICK_ENTRY(void, jni_Set##Result##Field(JNIEnv *env, jobject obj, jfieldID fieldID, Argument value)) \
2853 JNIWrapper("Set" XSTR(Result) "Field"); \
2854 \
2855 EntryProbe; \
2856 \
2857 oop o = JNIHandles::resolve_non_null(obj); \
2858 klassOop k = o->klass(); \
2859 int offset = jfieldIDWorkaround::from_instance_jfieldID(k, fieldID); \
2860 /* Keep JVMTI addition small and only check enabled flag here. */ \
2861 /* jni_SetField_probe_nh() assumes that is not okay to create handles */ \
2862 /* and creates a ResetNoHandleMark. */ \
2863 if (JvmtiExport::should_post_field_modification()) { \
2864 jvalue field_value; \
2865 field_value.unionType = value; \
2866 o = JvmtiExport::jni_SetField_probe_nh(thread, obj, o, k, fieldID, false, SigType, (jvalue *)&field_value); \
2867 } \
2868 o->Fieldname##_field_put(offset, value); \
2869 ReturnProbe; \
2870 JNI_END
2871
2872 DEFINE_SETFIELD(jboolean, bool, Boolean, 'Z', z
2873 , HOTSPOT_JNI_SETBOOLEANFIELD_ENTRY(env, obj, (uintptr_t)fieldID, value),
2874 HOTSPOT_JNI_SETBOOLEANFIELD_RETURN())
2875 DEFINE_SETFIELD(jbyte, byte, Byte, 'B', b
2876 , HOTSPOT_JNI_SETBYTEFIELD_ENTRY(env, obj, (uintptr_t)fieldID, value),
2877 HOTSPOT_JNI_SETBYTEFIELD_RETURN())
2878 DEFINE_SETFIELD(jchar, char, Char, 'C', c
2879 , HOTSPOT_JNI_SETCHARFIELD_ENTRY(env, obj, (uintptr_t)fieldID, value),
2880 HOTSPOT_JNI_SETCHARFIELD_RETURN())
2881 DEFINE_SETFIELD(jshort, short, Short, 'S', s
2882 , HOTSPOT_JNI_SETSHORTFIELD_ENTRY(env, obj, (uintptr_t)fieldID, value),
2883 HOTSPOT_JNI_SETSHORTFIELD_RETURN())
2884 DEFINE_SETFIELD(jint, int, Int, 'I', i
2885 , HOTSPOT_JNI_SETINTFIELD_ENTRY(env, obj, (uintptr_t)fieldID, value),
2886 HOTSPOT_JNI_SETINTFIELD_RETURN())
2887 DEFINE_SETFIELD(jlong, long, Long, 'J', j
2888 , HOTSPOT_JNI_SETLONGFIELD_ENTRY(env, obj, (uintptr_t)fieldID, value),
2889 HOTSPOT_JNI_SETLONGFIELD_RETURN())
2890 // Float and double probes don't return value because dtrace doesn't currently support it
2891 DEFINE_SETFIELD(jfloat, float, Float, 'F', f
2892 , HOTSPOT_JNI_SETFLOATFIELD_ENTRY(env, obj, (uintptr_t)fieldID),
2893 HOTSPOT_JNI_SETFLOATFIELD_RETURN())
2894 DEFINE_SETFIELD(jdouble, double, Double, 'D', d
2895 , HOTSPOT_JNI_SETDOUBLEFIELD_ENTRY(env, obj, (uintptr_t)fieldID),
2896 HOTSPOT_JNI_SETDOUBLEFIELD_RETURN())
2897 #endif /* USDT2 */
2898
2899 #ifndef USDT2
2900 DT_RETURN_MARK_DECL(ToReflectedField, jobject);
2901 #else /* USDT2 */
2902 DT_RETURN_MARK_DECL(ToReflectedField, jobject
2903 , HOTSPOT_JNI_TOREFLECTEDFIELD_RETURN(_ret_ref));
2904 #endif /* USDT2 */
2905
2906 JNI_ENTRY(jobject, jni_ToReflectedField(JNIEnv *env, jclass cls, jfieldID fieldID, jboolean isStatic))
2907 JNIWrapper("ToReflectedField");
2908 #ifndef USDT2
2909 DTRACE_PROBE4(hotspot_jni, ToReflectedField__entry,
2910 env, cls, fieldID, isStatic);
2911 #else /* USDT2 */
2912 HOTSPOT_JNI_TOREFLECTEDFIELD_ENTRY(
2913 env, cls, (uintptr_t) fieldID, isStatic);
2914 #endif /* USDT2 */
2915 jobject ret = NULL;
2916 DT_RETURN_MARK(ToReflectedField, jobject, (const jobject&)ret);
2917
2918 fieldDescriptor fd;
2919 bool found = false;
2920 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls));
2921
2922 assert(jfieldIDWorkaround::is_static_jfieldID(fieldID) == (isStatic != 0), "invalid fieldID");
2923
2924 if (isStatic) {
2925 // Static field. The fieldID a JNIid specifying the field holder and the offset within the klassOop.
2926 JNIid* id = jfieldIDWorkaround::from_static_jfieldID(fieldID);
2927 assert(id->is_static_field_id(), "invalid static field id");
2928 found = id->find_local_field(&fd);
2929 } else {
2930 // Non-static field. The fieldID is really the offset of the field within the instanceOop.
2931 int offset = jfieldIDWorkaround::from_instance_jfieldID(k, fieldID);
2932 found = instanceKlass::cast(k)->find_field_from_offset(offset, false, &fd);
2933 }
2934 assert(found, "bad fieldID passed into jni_ToReflectedField");
2935 oop reflected = Reflection::new_field(&fd, UseNewReflection, CHECK_NULL);
2936 ret = JNIHandles::make_local(env, reflected);
2937 return ret;
2938 JNI_END
2939
2940
2941 //
2942 // Accessing Static Fields
2943 //
2944 #ifndef USDT2
2945 DT_RETURN_MARK_DECL(GetStaticFieldID, jfieldID);
2946 #else /* USDT2 */
2947 DT_RETURN_MARK_DECL(GetStaticFieldID, jfieldID
2948 , HOTSPOT_JNI_GETSTATICFIELDID_RETURN((uintptr_t)_ret_ref));
2949 #endif /* USDT2 */
2950
2951 JNI_ENTRY(jfieldID, jni_GetStaticFieldID(JNIEnv *env, jclass clazz,
2952 const char *name, const char *sig))
2953 JNIWrapper("GetStaticFieldID");
2954 #ifndef USDT2
2955 DTRACE_PROBE4(hotspot_jni, GetStaticFieldID__entry, env, clazz, name, sig);
2956 #else /* USDT2 */
2957 HOTSPOT_JNI_GETSTATICFIELDID_ENTRY(
2958 env, clazz, (char *) name, (char *) sig);
2959 #endif /* USDT2 */
2960 jfieldID ret = NULL;
2961 DT_RETURN_MARK(GetStaticFieldID, jfieldID, (const jfieldID&)ret);
2962
2963 // The class should have been loaded (we have an instance of the class
2964 // passed in) so the field and signature should already be in the symbol
2965 // table. If they're not there, the field doesn't exist.
2966 TempNewSymbol fieldname = SymbolTable::probe(name, (int)strlen(name));
2967 TempNewSymbol signame = SymbolTable::probe(sig, (int)strlen(sig));
2968 if (fieldname == NULL || signame == NULL) {
2969 THROW_MSG_0(vmSymbols::java_lang_NoSuchFieldError(), (char*) name);
2970 }
2971 KlassHandle k(THREAD,
2972 java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(clazz)));
2973 // Make sure class is initialized before handing id's out to static fields
2974 Klass::cast(k())->initialize(CHECK_NULL);
2975
2976 fieldDescriptor fd;
2977 if (!Klass::cast(k())->oop_is_instance() ||
2978 !instanceKlass::cast(k())->find_field(fieldname, signame, true, &fd)) {
2979 THROW_MSG_0(vmSymbols::java_lang_NoSuchFieldError(), (char*) name);
2980 }
2981
2982 // A jfieldID for a static field is a JNIid specifying the field holder and the offset within the klassOop
2983 JNIid* id = instanceKlass::cast(fd.field_holder())->jni_id_for(fd.offset());
2984 debug_only(id->set_is_static_field_id();)
2985
2986 debug_only(id->verify(fd.field_holder()));
2987
2988 ret = jfieldIDWorkaround::to_static_jfieldID(id);
2989 return ret;
2990 JNI_END
2991
2992
2993 JNI_ENTRY(jobject, jni_GetStaticObjectField(JNIEnv *env, jclass clazz, jfieldID fieldID))
2994 JNIWrapper("GetStaticObjectField");
2995 #ifndef USDT2
2996 DTRACE_PROBE3(hotspot_jni, GetStaticObjectField__entry, env, clazz, fieldID);
2997 #else /* USDT2 */
2998 HOTSPOT_JNI_GETSTATICOBJECTFIELD_ENTRY(
2999 env, clazz, (uintptr_t) fieldID);
3000 #endif /* USDT2 */
3001 #ifndef JNICHECK_KERNEL
3002 DEBUG_ONLY(klassOop param_k = jniCheck::validate_class(thread, clazz);)
3003 #endif // JNICHECK_KERNEL
3004 JNIid* id = jfieldIDWorkaround::from_static_jfieldID(fieldID);
3005 assert(id->is_static_field_id(), "invalid static field id");
3006 // Keep JVMTI addition small and only check enabled flag here.
3007 // jni_GetField_probe() assumes that is okay to create handles.
3008 if (JvmtiExport::should_post_field_access()) {
3009 JvmtiExport::jni_GetField_probe(thread, NULL, NULL, id->holder(), fieldID, true);
3010 }
3011 jobject ret = JNIHandles::make_local(id->holder()->java_mirror()->obj_field(id->offset()));
3012 #ifndef USDT2
3013 DTRACE_PROBE1(hotspot_jni, GetStaticObjectField__return, ret);
3014 #else /* USDT2 */
3015 HOTSPOT_JNI_GETSTATICOBJECTFIELD_RETURN(
3016 ret);
3017 #endif /* USDT2 */
3018 return ret;
3019 JNI_END
3020
3021 #ifndef USDT2
3022 #define DEFINE_GETSTATICFIELD(Return,Fieldname,Result) \
3023 \
3024 DT_RETURN_MARK_DECL_FOR(Result, GetStatic##Result##Field, Return);\
3025 \
3026 JNI_ENTRY(Return, jni_GetStatic##Result##Field(JNIEnv *env, jclass clazz, jfieldID fieldID)) \
3027 JNIWrapper("GetStatic" XSTR(Result) "Field"); \
3028 DTRACE_PROBE3(hotspot_jni, GetStatic##Result##Field__entry, env, clazz, fieldID);\
3029 Return ret = 0;\
3030 DT_RETURN_MARK_FOR(Result, GetStatic##Result##Field, Return, \
3031 (const Return&)ret);\
3032 JNIid* id = jfieldIDWorkaround::from_static_jfieldID(fieldID); \
3033 assert(id->is_static_field_id(), "invalid static field id"); \
3034 /* Keep JVMTI addition small and only check enabled flag here. */ \
3035 /* jni_GetField_probe() assumes that is okay to create handles. */ \
3036 if (JvmtiExport::should_post_field_access()) { \
3037 JvmtiExport::jni_GetField_probe(thread, NULL, NULL, id->holder(), fieldID, true); \
3038 } \
3039 ret = id->holder()->java_mirror()-> Fieldname##_field (id->offset()); \
3040 return ret;\
3041 JNI_END
3042
3043 DEFINE_GETSTATICFIELD(jboolean, bool, Boolean)
3044 DEFINE_GETSTATICFIELD(jbyte, byte, Byte)
3045 DEFINE_GETSTATICFIELD(jchar, char, Char)
3046 DEFINE_GETSTATICFIELD(jshort, short, Short)
3047 DEFINE_GETSTATICFIELD(jint, int, Int)
3048 DEFINE_GETSTATICFIELD(jlong, long, Long)
3049 DEFINE_GETSTATICFIELD(jfloat, float, Float)
3050 DEFINE_GETSTATICFIELD(jdouble, double, Double)
3051
3052 #else /* USDT2 */
3053
3054 #define DEFINE_GETSTATICFIELD(Return,Fieldname,Result \
3055 , EntryProbe, ReturnProbe) \
3056 \
3057 DT_RETURN_MARK_DECL_FOR(Result, GetStatic##Result##Field, Return \
3058 , ReturnProbe); \
3059 \
3060 JNI_ENTRY(Return, jni_GetStatic##Result##Field(JNIEnv *env, jclass clazz, jfieldID fieldID)) \
3061 JNIWrapper("GetStatic" XSTR(Result) "Field"); \
3062 EntryProbe; \
3063 Return ret = 0;\
3064 DT_RETURN_MARK_FOR(Result, GetStatic##Result##Field, Return, \
3065 (const Return&)ret);\
3066 JNIid* id = jfieldIDWorkaround::from_static_jfieldID(fieldID); \
3067 assert(id->is_static_field_id(), "invalid static field id"); \
3068 /* Keep JVMTI addition small and only check enabled flag here. */ \
3069 /* jni_GetField_probe() assumes that is okay to create handles. */ \
3070 if (JvmtiExport::should_post_field_access()) { \
3071 JvmtiExport::jni_GetField_probe(thread, NULL, NULL, id->holder(), fieldID, true); \
3072 } \
3073 ret = id->holder()->java_mirror()-> Fieldname##_field (id->offset()); \
3074 return ret;\
3075 JNI_END
3076
3077 DEFINE_GETSTATICFIELD(jboolean, bool, Boolean
3078 , HOTSPOT_JNI_GETSTATICBOOLEANFIELD_ENTRY(env, clazz, (uintptr_t) fieldID), HOTSPOT_JNI_GETSTATICBOOLEANFIELD_RETURN(_ret_ref))
3079 DEFINE_GETSTATICFIELD(jbyte, byte, Byte
3080 , HOTSPOT_JNI_GETSTATICBYTEFIELD_ENTRY(env, clazz, (uintptr_t) fieldID), HOTSPOT_JNI_GETSTATICBYTEFIELD_RETURN(_ret_ref) )
3081 DEFINE_GETSTATICFIELD(jchar, char, Char
3082 , HOTSPOT_JNI_GETSTATICCHARFIELD_ENTRY(env, clazz, (uintptr_t) fieldID), HOTSPOT_JNI_GETSTATICCHARFIELD_RETURN(_ret_ref) )
3083 DEFINE_GETSTATICFIELD(jshort, short, Short
3084 , HOTSPOT_JNI_GETSTATICSHORTFIELD_ENTRY(env, clazz, (uintptr_t) fieldID), HOTSPOT_JNI_GETSTATICSHORTFIELD_RETURN(_ret_ref) )
3085 DEFINE_GETSTATICFIELD(jint, int, Int
3086 , HOTSPOT_JNI_GETSTATICINTFIELD_ENTRY(env, clazz, (uintptr_t) fieldID), HOTSPOT_JNI_GETSTATICINTFIELD_RETURN(_ret_ref) )
3087 DEFINE_GETSTATICFIELD(jlong, long, Long
3088 , HOTSPOT_JNI_GETSTATICLONGFIELD_ENTRY(env, clazz, (uintptr_t) fieldID), HOTSPOT_JNI_GETSTATICLONGFIELD_RETURN(_ret_ref) )
3089 // Float and double probes don't return value because dtrace doesn't currently support it
3090 DEFINE_GETSTATICFIELD(jfloat, float, Float
3091 , HOTSPOT_JNI_GETSTATICFLOATFIELD_ENTRY(env, clazz, (uintptr_t) fieldID), HOTSPOT_JNI_GETSTATICFLOATFIELD_RETURN() )
3092 DEFINE_GETSTATICFIELD(jdouble, double, Double
3093 , HOTSPOT_JNI_GETSTATICDOUBLEFIELD_ENTRY(env, clazz, (uintptr_t) fieldID), HOTSPOT_JNI_GETSTATICDOUBLEFIELD_RETURN() )
3094 #endif /* USDT2 */
3095
3096 JNI_ENTRY(void, jni_SetStaticObjectField(JNIEnv *env, jclass clazz, jfieldID fieldID, jobject value))
3097 JNIWrapper("SetStaticObjectField");
3098 #ifndef USDT2
3099 DTRACE_PROBE4(hotspot_jni, SetStaticObjectField__entry, env, clazz, fieldID, value);
3100 #else /* USDT2 */
3101 HOTSPOT_JNI_SETSTATICOBJECTFIELD_ENTRY(
3102 env, clazz, (uintptr_t) fieldID, value);
3103 #endif /* USDT2 */
3104 JNIid* id = jfieldIDWorkaround::from_static_jfieldID(fieldID);
3105 assert(id->is_static_field_id(), "invalid static field id");
3106 // Keep JVMTI addition small and only check enabled flag here.
3107 // jni_SetField_probe() assumes that is okay to create handles.
3108 if (JvmtiExport::should_post_field_modification()) {
3109 jvalue field_value;
3110 field_value.l = value;
3111 JvmtiExport::jni_SetField_probe(thread, NULL, NULL, id->holder(), fieldID, true, 'L', (jvalue *)&field_value);
3112 }
3113 id->holder()->java_mirror()->obj_field_put(id->offset(), JNIHandles::resolve(value));
3114 #ifndef USDT2
3115 DTRACE_PROBE(hotspot_jni, SetStaticObjectField__return);
3116 #else /* USDT2 */
3117 HOTSPOT_JNI_SETSTATICOBJECTFIELD_RETURN(
3118 );
3119 #endif /* USDT2 */
3120 JNI_END
3121
3122
3123 #ifndef USDT2
3124 #define DEFINE_SETSTATICFIELD(Argument,Fieldname,Result,SigType,unionType) \
3125 \
3126 JNI_ENTRY(void, jni_SetStatic##Result##Field(JNIEnv *env, jclass clazz, jfieldID fieldID, Argument value)) \
3127 JNIWrapper("SetStatic" XSTR(Result) "Field"); \
3128 HS_DTRACE_PROBE_CDECL_N(hotspot_jni, SetStatic##Result##Field__entry,\
3129 ( JNIEnv*, jclass, jfieldID FP_SELECT_##Result(COMMA Argument,/*empty*/) ) ); \
3130 HS_DTRACE_PROBE_N(hotspot_jni, SetStatic##Result##Field__entry, \
3131 ( env, clazz, fieldID FP_SELECT_##Result(COMMA value,/*empty*/) ) ); \
3132 \
3133 JNIid* id = jfieldIDWorkaround::from_static_jfieldID(fieldID); \
3134 assert(id->is_static_field_id(), "invalid static field id"); \
3135 /* Keep JVMTI addition small and only check enabled flag here. */ \
3136 /* jni_SetField_probe() assumes that is okay to create handles. */ \
3137 if (JvmtiExport::should_post_field_modification()) { \
3138 jvalue field_value; \
3139 field_value.unionType = value; \
3140 JvmtiExport::jni_SetField_probe(thread, NULL, NULL, id->holder(), fieldID, true, SigType, (jvalue *)&field_value); \
3141 } \
3142 id->holder()->java_mirror()-> Fieldname##_field_put (id->offset(), value); \
3143 DTRACE_PROBE(hotspot_jni, SetStatic##Result##Field__return);\
3144 JNI_END
3145
3146 DEFINE_SETSTATICFIELD(jboolean, bool, Boolean, 'Z', z)
3147 DEFINE_SETSTATICFIELD(jbyte, byte, Byte, 'B', b)
3148 DEFINE_SETSTATICFIELD(jchar, char, Char, 'C', c)
3149 DEFINE_SETSTATICFIELD(jshort, short, Short, 'S', s)
3150 DEFINE_SETSTATICFIELD(jint, int, Int, 'I', i)
3151 DEFINE_SETSTATICFIELD(jlong, long, Long, 'J', j)
3152 DEFINE_SETSTATICFIELD(jfloat, float, Float, 'F', f)
3153 DEFINE_SETSTATICFIELD(jdouble, double, Double, 'D', d)
3154
3155 #else /* USDT2 */
3156
3157 #define DEFINE_SETSTATICFIELD(Argument,Fieldname,Result,SigType,unionType \
3158 , EntryProbe, ReturnProbe) \
3159 \
3160 JNI_ENTRY(void, jni_SetStatic##Result##Field(JNIEnv *env, jclass clazz, jfieldID fieldID, Argument value)) \
3161 JNIWrapper("SetStatic" XSTR(Result) "Field"); \
3162 EntryProbe; \
3163 \
3164 JNIid* id = jfieldIDWorkaround::from_static_jfieldID(fieldID); \
3165 assert(id->is_static_field_id(), "invalid static field id"); \
3166 /* Keep JVMTI addition small and only check enabled flag here. */ \
3167 /* jni_SetField_probe() assumes that is okay to create handles. */ \
3168 if (JvmtiExport::should_post_field_modification()) { \
3169 jvalue field_value; \
3170 field_value.unionType = value; \
3171 JvmtiExport::jni_SetField_probe(thread, NULL, NULL, id->holder(), fieldID, true, SigType, (jvalue *)&field_value); \
3172 } \
3173 id->holder()->java_mirror()-> Fieldname##_field_put (id->offset(), value); \
3174 ReturnProbe;\
3175 JNI_END
3176
3177 DEFINE_SETSTATICFIELD(jboolean, bool, Boolean, 'Z', z
3178 , HOTSPOT_JNI_SETBOOLEANFIELD_ENTRY(env, clazz, (uintptr_t)fieldID, value),
3179 HOTSPOT_JNI_SETBOOLEANFIELD_RETURN())
3180 DEFINE_SETSTATICFIELD(jbyte, byte, Byte, 'B', b
3181 , HOTSPOT_JNI_SETSTATICBYTEFIELD_ENTRY(env, clazz, (uintptr_t) fieldID, value),
3182 HOTSPOT_JNI_SETSTATICBYTEFIELD_RETURN())
3183 DEFINE_SETSTATICFIELD(jchar, char, Char, 'C', c
3184 , HOTSPOT_JNI_SETSTATICCHARFIELD_ENTRY(env, clazz, (uintptr_t) fieldID, value),
3185 HOTSPOT_JNI_SETSTATICCHARFIELD_RETURN())
3186 DEFINE_SETSTATICFIELD(jshort, short, Short, 'S', s
3187 , HOTSPOT_JNI_SETSTATICSHORTFIELD_ENTRY(env, clazz, (uintptr_t) fieldID, value),
3188 HOTSPOT_JNI_SETSTATICSHORTFIELD_RETURN())
3189 DEFINE_SETSTATICFIELD(jint, int, Int, 'I', i
3190 , HOTSPOT_JNI_SETSTATICINTFIELD_ENTRY(env, clazz, (uintptr_t) fieldID, value),
3191 HOTSPOT_JNI_SETSTATICINTFIELD_RETURN())
3192 DEFINE_SETSTATICFIELD(jlong, long, Long, 'J', j
3193 , HOTSPOT_JNI_SETSTATICLONGFIELD_ENTRY(env, clazz, (uintptr_t) fieldID, value),
3194 HOTSPOT_JNI_SETSTATICLONGFIELD_RETURN())
3195 // Float and double probes don't return value because dtrace doesn't currently support it
3196 DEFINE_SETSTATICFIELD(jfloat, float, Float, 'F', f
3197 , HOTSPOT_JNI_SETSTATICFLOATFIELD_ENTRY(env, clazz, (uintptr_t) fieldID),
3198 HOTSPOT_JNI_SETSTATICFLOATFIELD_RETURN())
3199 DEFINE_SETSTATICFIELD(jdouble, double, Double, 'D', d
3200 , HOTSPOT_JNI_SETSTATICDOUBLEFIELD_ENTRY(env, clazz, (uintptr_t) fieldID),
3201 HOTSPOT_JNI_SETSTATICDOUBLEFIELD_RETURN())
3202 #endif /* USDT2 */
3203
3204 //
3205 // String Operations
3206 //
3207
3208 // Unicode Interface
3209
3210 #ifndef USDT2
3211 DT_RETURN_MARK_DECL(NewString, jstring);
3212 #else /* USDT2 */
3213 DT_RETURN_MARK_DECL(NewString, jstring
3214 , HOTSPOT_JNI_NEWSTRING_RETURN(_ret_ref));
3215 #endif /* USDT2 */
3216
3217 JNI_ENTRY(jstring, jni_NewString(JNIEnv *env, const jchar *unicodeChars, jsize len))
3218 JNIWrapper("NewString");
3219 #ifndef USDT2
3220 DTRACE_PROBE3(hotspot_jni, NewString__entry, env, unicodeChars, len);
3221 #else /* USDT2 */
3222 HOTSPOT_JNI_NEWSTRING_ENTRY(
3223 env, (uint16_t *) unicodeChars, len);
3224 #endif /* USDT2 */
3225 jstring ret = NULL;
3226 DT_RETURN_MARK(NewString, jstring, (const jstring&)ret);
3227 oop string=java_lang_String::create_oop_from_unicode((jchar*) unicodeChars, len, CHECK_NULL);
3228 ret = (jstring) JNIHandles::make_local(env, string);
3229 return ret;
3230 JNI_END
3231
3232
3233 JNI_QUICK_ENTRY(jsize, jni_GetStringLength(JNIEnv *env, jstring string))
3234 JNIWrapper("GetStringLength");
3235 #ifndef USDT2
3236 DTRACE_PROBE2(hotspot_jni, GetStringLength__entry, env, string);
3237 #else /* USDT2 */
3238 HOTSPOT_JNI_GETSTRINGLENGTH_ENTRY(
3239 env, string);
3240 #endif /* USDT2 */
3241 jsize ret = java_lang_String::length(JNIHandles::resolve_non_null(string));
3242 #ifndef USDT2
3243 DTRACE_PROBE1(hotspot_jni, GetStringLength__return, ret);
3244 #else /* USDT2 */
3245 HOTSPOT_JNI_GETSTRINGLENGTH_RETURN(
3246 ret);
3247 #endif /* USDT2 */
3248 return ret;
3249 JNI_END
3250
3251
3252 JNI_QUICK_ENTRY(const jchar*, jni_GetStringChars(
3253 JNIEnv *env, jstring string, jboolean *isCopy))
3254 JNIWrapper("GetStringChars");
3255 #ifndef USDT2
3256 DTRACE_PROBE3(hotspot_jni, GetStringChars__entry, env, string, isCopy);
3257 #else /* USDT2 */
3258 HOTSPOT_JNI_GETSTRINGCHARS_ENTRY(
3259 env, string, (uintptr_t *) isCopy);
3260 #endif /* USDT2 */
3261 //%note jni_5
3262 if (isCopy != NULL) {
3263 *isCopy = JNI_TRUE;
3264 }
3265 oop s = JNIHandles::resolve_non_null(string);
3266 int s_len = java_lang_String::length(s);
3267 typeArrayOop s_value = java_lang_String::value(s);
3268 int s_offset = java_lang_String::offset(s);
3269 jchar* buf = NEW_C_HEAP_ARRAY(jchar, s_len + 1); // add one for zero termination
3270 if (s_len > 0) {
3271 memcpy(buf, s_value->char_at_addr(s_offset), sizeof(jchar)*s_len);
3272 }
3273 buf[s_len] = 0;
3274 #ifndef USDT2
3275 DTRACE_PROBE1(hotspot_jni, GetStringChars__return, buf);
3276 #else /* USDT2 */
3277 HOTSPOT_JNI_GETSTRINGCHARS_RETURN(
3278 buf);
3279 #endif /* USDT2 */
3280 return buf;
3281 JNI_END
3282
3283
3284 JNI_QUICK_ENTRY(void, jni_ReleaseStringChars(JNIEnv *env, jstring str, const jchar *chars))
3285 JNIWrapper("ReleaseStringChars");
3286 #ifndef USDT2
3287 DTRACE_PROBE3(hotspot_jni, ReleaseStringChars__entry, env, str, chars);
3288 #else /* USDT2 */
3289 HOTSPOT_JNI_RELEASESTRINGCHARS_ENTRY(
3290 env, str, (uint16_t *) chars);
3291 #endif /* USDT2 */
3292 //%note jni_6
3293 if (chars != NULL) {
3294 // Since String objects are supposed to be immutable, don't copy any
3295 // new data back. A bad user will have to go after the char array.
3296 FreeHeap((void*) chars);
3297 }
3298 #ifndef USDT2
3299 DTRACE_PROBE(hotspot_jni, ReleaseStringChars__return);
3300 #else /* USDT2 */
3301 HOTSPOT_JNI_RELEASESTRINGCHARS_RETURN(
3302 );
3303 #endif /* USDT2 */
3304 JNI_END
3305
3306
3307 // UTF Interface
3308
3309 #ifndef USDT2
3310 DT_RETURN_MARK_DECL(NewStringUTF, jstring);
3311 #else /* USDT2 */
3312 DT_RETURN_MARK_DECL(NewStringUTF, jstring
3313 , HOTSPOT_JNI_NEWSTRINGUTF_RETURN(_ret_ref));
3314 #endif /* USDT2 */
3315
3316 JNI_ENTRY(jstring, jni_NewStringUTF(JNIEnv *env, const char *bytes))
3317 JNIWrapper("NewStringUTF");
3318 #ifndef USDT2
3319 DTRACE_PROBE2(hotspot_jni, NewStringUTF__entry, env, bytes);
3320 #else /* USDT2 */
3321 HOTSPOT_JNI_NEWSTRINGUTF_ENTRY(
3322 env, (char *) bytes);
3323 #endif /* USDT2 */
3324 jstring ret;
3325 DT_RETURN_MARK(NewStringUTF, jstring, (const jstring&)ret);
3326
3327 oop result = java_lang_String::create_oop_from_str((char*) bytes, CHECK_NULL);
3328 ret = (jstring) JNIHandles::make_local(env, result);
3329 return ret;
3330 JNI_END
3331
3332
3333 JNI_ENTRY(jsize, jni_GetStringUTFLength(JNIEnv *env, jstring string))
3334 JNIWrapper("GetStringUTFLength");
3335 #ifndef USDT2
3336 DTRACE_PROBE2(hotspot_jni, GetStringUTFLength__entry, env, string);
3337 #else /* USDT2 */
3338 HOTSPOT_JNI_GETSTRINGUTFLENGTH_ENTRY(
3339 env, string);
3340 #endif /* USDT2 */
3341 jsize ret = java_lang_String::utf8_length(JNIHandles::resolve_non_null(string));
3342 #ifndef USDT2
3343 DTRACE_PROBE1(hotspot_jni, GetStringUTFLength__return, ret);
3344 #else /* USDT2 */
3345 HOTSPOT_JNI_GETSTRINGUTFLENGTH_RETURN(
3346 ret);
3347 #endif /* USDT2 */
3348 return ret;
3349 JNI_END
3350
3351
3352 JNI_ENTRY(const char*, jni_GetStringUTFChars(JNIEnv *env, jstring string, jboolean *isCopy))
3353 JNIWrapper("GetStringUTFChars");
3354 #ifndef USDT2
3355 DTRACE_PROBE3(hotspot_jni, GetStringUTFChars__entry, env, string, isCopy);
3356 #else /* USDT2 */
3357 HOTSPOT_JNI_GETSTRINGUTFCHARS_ENTRY(
3358 env, string, (uintptr_t *) isCopy);
3359 #endif /* USDT2 */
3360 oop java_string = JNIHandles::resolve_non_null(string);
3361 size_t length = java_lang_String::utf8_length(java_string);
3362 char* result = AllocateHeap(length + 1, "GetStringUTFChars");
3363 java_lang_String::as_utf8_string(java_string, result, (int) length + 1);
3364 if (isCopy != NULL) *isCopy = JNI_TRUE;
3365 #ifndef USDT2
3366 DTRACE_PROBE1(hotspot_jni, GetStringUTFChars__return, result);
3367 #else /* USDT2 */
3368 HOTSPOT_JNI_GETSTRINGUTFCHARS_RETURN(
3369 result);
3370 #endif /* USDT2 */
3371 return result;
3372 JNI_END
3373
3374
3375 JNI_LEAF(void, jni_ReleaseStringUTFChars(JNIEnv *env, jstring str, const char *chars))
3376 JNIWrapper("ReleaseStringUTFChars");
3377 #ifndef USDT2
3378 DTRACE_PROBE3(hotspot_jni, ReleaseStringUTFChars__entry, env, str, chars);
3379 #else /* USDT2 */
3380 HOTSPOT_JNI_RELEASESTRINGUTFCHARS_ENTRY(
3381 env, str, (char *) chars);
3382 #endif /* USDT2 */
3383 if (chars != NULL) {
3384 FreeHeap((char*) chars);
3385 }
3386 #ifndef USDT2
3387 DTRACE_PROBE(hotspot_jni, ReleaseStringUTFChars__return);
3388 #else /* USDT2 */
3389 HOTSPOT_JNI_RELEASESTRINGUTFCHARS_RETURN(
3390 );
3391 #endif /* USDT2 */
3392 JNI_END
3393
3394
3395 JNI_QUICK_ENTRY(jsize, jni_GetArrayLength(JNIEnv *env, jarray array))
3396 JNIWrapper("GetArrayLength");
3397 #ifndef USDT2
3398 DTRACE_PROBE2(hotspot_jni, GetArrayLength__entry, env, array);
3399 #else /* USDT2 */
3400 HOTSPOT_JNI_GETARRAYLENGTH_ENTRY(
3401 env, array);
3402 #endif /* USDT2 */
3403 arrayOop a = arrayOop(JNIHandles::resolve_non_null(array));
3404 assert(a->is_array(), "must be array");
3405 jsize ret = a->length();
3406 #ifndef USDT2
3407 DTRACE_PROBE1(hotspot_jni, GetArrayLength__return, ret);
3408 #else /* USDT2 */
3409 HOTSPOT_JNI_GETARRAYLENGTH_RETURN(
3410 ret);
3411 #endif /* USDT2 */
3412 return ret;
3413 JNI_END
3414
3415
3416 //
3417 // Object Array Operations
3418 //
3419
3420 #ifndef USDT2
3421 DT_RETURN_MARK_DECL(NewObjectArray, jobjectArray);
3422 #else /* USDT2 */
3423 DT_RETURN_MARK_DECL(NewObjectArray, jobjectArray
3424 , HOTSPOT_JNI_NEWOBJECTARRAY_RETURN(_ret_ref));
3425 #endif /* USDT2 */
3426
3427 JNI_ENTRY(jobjectArray, jni_NewObjectArray(JNIEnv *env, jsize length, jclass elementClass, jobject initialElement))
3428 JNIWrapper("NewObjectArray");
3429 #ifndef USDT2
3430 DTRACE_PROBE4(hotspot_jni, NewObjectArray__entry, env, length, elementClass, initialElement);
3431 #else /* USDT2 */
3432 HOTSPOT_JNI_NEWOBJECTARRAY_ENTRY(
3433 env, length, elementClass, initialElement);
3434 #endif /* USDT2 */
3435 jobjectArray ret = NULL;
3436 DT_RETURN_MARK(NewObjectArray, jobjectArray, (const jobjectArray&)ret);
3437 KlassHandle ek(THREAD, java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(elementClass)));
3438 klassOop ako = Klass::cast(ek())->array_klass(CHECK_NULL);
3439 KlassHandle ak = KlassHandle(THREAD, ako);
3440 objArrayKlass::cast(ak())->initialize(CHECK_NULL);
3441 objArrayOop result = objArrayKlass::cast(ak())->allocate(length, CHECK_NULL);
3442 oop initial_value = JNIHandles::resolve(initialElement);
3443 if (initial_value != NULL) { // array already initialized with NULL
3444 for (int index = 0; index < length; index++) {
3445 result->obj_at_put(index, initial_value);
3446 }
3447 }
3448 ret = (jobjectArray) JNIHandles::make_local(env, result);
3449 return ret;
3450 JNI_END
3451
3452 #ifndef USDT2
3453 DT_RETURN_MARK_DECL(GetObjectArrayElement, jobject);
3454 #else /* USDT2 */
3455 DT_RETURN_MARK_DECL(GetObjectArrayElement, jobject
3456 , HOTSPOT_JNI_GETOBJECTARRAYELEMENT_RETURN(_ret_ref));
3457 #endif /* USDT2 */
3458
3459 JNI_ENTRY(jobject, jni_GetObjectArrayElement(JNIEnv *env, jobjectArray array, jsize index))
3460 JNIWrapper("GetObjectArrayElement");
3461 #ifndef USDT2
3462 DTRACE_PROBE3(hotspot_jni, GetObjectArrayElement__entry, env, array, index);
3463 #else /* USDT2 */
3464 HOTSPOT_JNI_GETOBJECTARRAYELEMENT_ENTRY(
3465 env, array, index);
3466 #endif /* USDT2 */
3467 jobject ret = NULL;
3468 DT_RETURN_MARK(GetObjectArrayElement, jobject, (const jobject&)ret);
3469 objArrayOop a = objArrayOop(JNIHandles::resolve_non_null(array));
3470 if (a->is_within_bounds(index)) {
3471 ret = JNIHandles::make_local(env, a->obj_at(index));
3472 return ret;
3473 } else {
3474 char buf[jintAsStringSize];
3475 sprintf(buf, "%d", index);
3476 THROW_MSG_0(vmSymbols::java_lang_ArrayIndexOutOfBoundsException(), buf);
3477 }
3478 JNI_END
3479
3480 #ifndef USDT2
3481 DT_VOID_RETURN_MARK_DECL(SetObjectArrayElement);
3482 #else /* USDT2 */
3483 DT_VOID_RETURN_MARK_DECL(SetObjectArrayElement
3484 , HOTSPOT_JNI_SETOBJECTARRAYELEMENT_RETURN());
3485 #endif /* USDT2 */
3486
3487 JNI_ENTRY(void, jni_SetObjectArrayElement(JNIEnv *env, jobjectArray array, jsize index, jobject value))
3488 JNIWrapper("SetObjectArrayElement");
3489 #ifndef USDT2
3490 DTRACE_PROBE4(hotspot_jni, SetObjectArrayElement__entry, env, array, index, value);
3491 #else /* USDT2 */
3492 HOTSPOT_JNI_SETOBJECTARRAYELEMENT_ENTRY(
3493 env, array, index, value);
3494 #endif /* USDT2 */
3495 DT_VOID_RETURN_MARK(SetObjectArrayElement);
3496
3497 objArrayOop a = objArrayOop(JNIHandles::resolve_non_null(array));
3498 oop v = JNIHandles::resolve(value);
3499 if (a->is_within_bounds(index)) {
3500 if (v == NULL || v->is_a(objArrayKlass::cast(a->klass())->element_klass())) {
3501 a->obj_at_put(index, v);
3502 } else {
3503 THROW(vmSymbols::java_lang_ArrayStoreException());
3504 }
3505 } else {
3506 char buf[jintAsStringSize];
3507 sprintf(buf, "%d", index);
3508 THROW_MSG(vmSymbols::java_lang_ArrayIndexOutOfBoundsException(), buf);
3509 }
3510 JNI_END
3511
3512
3513 #ifndef USDT2
3514 #define DEFINE_NEWSCALARARRAY(Return,Allocator,Result) \
3515 \
3516 DT_RETURN_MARK_DECL(New##Result##Array, Return); \
3517 \
3518 JNI_ENTRY(Return, \
3519 jni_New##Result##Array(JNIEnv *env, jsize len)) \
3520 JNIWrapper("New" XSTR(Result) "Array"); \
3521 DTRACE_PROBE2(hotspot_jni, New##Result##Array__entry, env, len);\
3522 Return ret = NULL;\
3523 DT_RETURN_MARK(New##Result##Array, Return, (const Return&)ret);\
3524 \
3525 oop obj= oopFactory::Allocator(len, CHECK_0); \
3526 ret = (Return) JNIHandles::make_local(env, obj); \
3527 return ret;\
3528 JNI_END
3529
3530 DEFINE_NEWSCALARARRAY(jbooleanArray, new_boolArray, Boolean)
3531 DEFINE_NEWSCALARARRAY(jbyteArray, new_byteArray, Byte)
3532 DEFINE_NEWSCALARARRAY(jshortArray, new_shortArray, Short)
3533 DEFINE_NEWSCALARARRAY(jcharArray, new_charArray, Char)
3534 DEFINE_NEWSCALARARRAY(jintArray, new_intArray, Int)
3535 DEFINE_NEWSCALARARRAY(jlongArray, new_longArray, Long)
3536 DEFINE_NEWSCALARARRAY(jfloatArray, new_singleArray, Float)
3537 DEFINE_NEWSCALARARRAY(jdoubleArray, new_doubleArray, Double)
3538
3539 #else /* USDT2 */
3540
3541 #define DEFINE_NEWSCALARARRAY(Return,Allocator,Result \
3542 ,EntryProbe,ReturnProbe) \
3543 \
3544 DT_RETURN_MARK_DECL(New##Result##Array, Return \
3545 , ReturnProbe); \
3546 \
3547 JNI_ENTRY(Return, \
3548 jni_New##Result##Array(JNIEnv *env, jsize len)) \
3549 JNIWrapper("New" XSTR(Result) "Array"); \
3550 EntryProbe; \
3551 Return ret = NULL;\
3552 DT_RETURN_MARK(New##Result##Array, Return, (const Return&)ret);\
3553 \
3554 oop obj= oopFactory::Allocator(len, CHECK_0); \
3555 ret = (Return) JNIHandles::make_local(env, obj); \
3556 return ret;\
3557 JNI_END
3558
3559 DEFINE_NEWSCALARARRAY(jbooleanArray, new_boolArray, Boolean,
3560 HOTSPOT_JNI_NEWBOOLEANARRAY_ENTRY(env, len),
3561 HOTSPOT_JNI_NEWBOOLEANARRAY_RETURN(_ret_ref))
3562 DEFINE_NEWSCALARARRAY(jbyteArray, new_byteArray, Byte,
3563 HOTSPOT_JNI_NEWBYTEARRAY_ENTRY(env, len),
3564 HOTSPOT_JNI_NEWBYTEARRAY_RETURN(_ret_ref))
3565 DEFINE_NEWSCALARARRAY(jshortArray, new_shortArray, Short,
3566 HOTSPOT_JNI_NEWSHORTARRAY_ENTRY(env, len),
3567 HOTSPOT_JNI_NEWSHORTARRAY_RETURN(_ret_ref))
3568 DEFINE_NEWSCALARARRAY(jcharArray, new_charArray, Char,
3569 HOTSPOT_JNI_NEWCHARARRAY_ENTRY(env, len),
3570 HOTSPOT_JNI_NEWCHARARRAY_RETURN(_ret_ref))
3571 DEFINE_NEWSCALARARRAY(jintArray, new_intArray, Int,
3572 HOTSPOT_JNI_NEWINTARRAY_ENTRY(env, len),
3573 HOTSPOT_JNI_NEWINTARRAY_RETURN(_ret_ref))
3574 DEFINE_NEWSCALARARRAY(jlongArray, new_longArray, Long,
3575 HOTSPOT_JNI_NEWLONGARRAY_ENTRY(env, len),
3576 HOTSPOT_JNI_NEWLONGARRAY_RETURN(_ret_ref))
3577 DEFINE_NEWSCALARARRAY(jfloatArray, new_singleArray, Float,
3578 HOTSPOT_JNI_NEWFLOATARRAY_ENTRY(env, len),
3579 HOTSPOT_JNI_NEWFLOATARRAY_RETURN(_ret_ref))
3580 DEFINE_NEWSCALARARRAY(jdoubleArray, new_doubleArray, Double,
3581 HOTSPOT_JNI_NEWDOUBLEARRAY_ENTRY(env, len),
3582 HOTSPOT_JNI_NEWDOUBLEARRAY_RETURN(_ret_ref))
3583 #endif /* USDT2 */
3584
3585 // Return an address which will fault if the caller writes to it.
3586
3587 static char* get_bad_address() {
3588 static char* bad_address = NULL;
3589 if (bad_address == NULL) {
3590 size_t size = os::vm_allocation_granularity();
3591 bad_address = os::reserve_memory(size);
3592 if (bad_address != NULL) {
3593 os::protect_memory(bad_address, size, os::MEM_PROT_READ,
3594 /*is_committed*/false);
3595 }
3596 }
3597 return bad_address;
3598 }
3599
3600
3601 #ifndef USDT2
3602 #define DEFINE_GETSCALARARRAYELEMENTS(ElementTag,ElementType,Result, Tag) \
3603 \
3604 JNI_QUICK_ENTRY(ElementType*, \
3605 jni_Get##Result##ArrayElements(JNIEnv *env, ElementType##Array array, jboolean *isCopy)) \
3606 JNIWrapper("Get" XSTR(Result) "ArrayElements"); \
3607 DTRACE_PROBE3(hotspot_jni, Get##Result##ArrayElements__entry, env, array, isCopy);\
3608 /* allocate an chunk of memory in c land */ \
3609 typeArrayOop a = typeArrayOop(JNIHandles::resolve_non_null(array)); \
3610 ElementType* result; \
3611 int len = a->length(); \
3612 if (len == 0) { \
3613 /* Empty array: legal but useless, can't return NULL. \
3614 * Return a pointer to something useless. \
3615 * Avoid asserts in typeArrayOop. */ \
3616 result = (ElementType*)get_bad_address(); \
3617 } else { \
3618 result = NEW_C_HEAP_ARRAY(ElementType, len); \
3619 /* copy the array to the c chunk */ \
3620 memcpy(result, a->Tag##_at_addr(0), sizeof(ElementType)*len); \
3621 } \
3622 if (isCopy) *isCopy = JNI_TRUE; \
3623 DTRACE_PROBE1(hotspot_jni, Get##Result##ArrayElements__return, result);\
3624 return result; \
3625 JNI_END
3626
3627 DEFINE_GETSCALARARRAYELEMENTS(T_BOOLEAN, jboolean, Boolean, bool)
3628 DEFINE_GETSCALARARRAYELEMENTS(T_BYTE, jbyte, Byte, byte)
3629 DEFINE_GETSCALARARRAYELEMENTS(T_SHORT, jshort, Short, short)
3630 DEFINE_GETSCALARARRAYELEMENTS(T_CHAR, jchar, Char, char)
3631 DEFINE_GETSCALARARRAYELEMENTS(T_INT, jint, Int, int)
3632 DEFINE_GETSCALARARRAYELEMENTS(T_LONG, jlong, Long, long)
3633 DEFINE_GETSCALARARRAYELEMENTS(T_FLOAT, jfloat, Float, float)
3634 DEFINE_GETSCALARARRAYELEMENTS(T_DOUBLE, jdouble, Double, double)
3635
3636 #else /* USDT2 */
3637
3638 #define DEFINE_GETSCALARARRAYELEMENTS(ElementTag,ElementType,Result, Tag \
3639 , EntryProbe, ReturnProbe) \
3640 \
3641 JNI_QUICK_ENTRY(ElementType*, \
3642 jni_Get##Result##ArrayElements(JNIEnv *env, ElementType##Array array, jboolean *isCopy)) \
3643 JNIWrapper("Get" XSTR(Result) "ArrayElements"); \
3644 EntryProbe; \
3645 /* allocate an chunk of memory in c land */ \
3646 typeArrayOop a = typeArrayOop(JNIHandles::resolve_non_null(array)); \
3647 ElementType* result; \
3648 int len = a->length(); \
3649 if (len == 0) { \
3650 /* Empty array: legal but useless, can't return NULL. \
3651 * Return a pointer to something useless. \
3652 * Avoid asserts in typeArrayOop. */ \
3653 result = (ElementType*)get_bad_address(); \
3654 } else { \
3655 result = NEW_C_HEAP_ARRAY(ElementType, len); \
3656 /* copy the array to the c chunk */ \
3657 memcpy(result, a->Tag##_at_addr(0), sizeof(ElementType)*len); \
3658 } \
3659 if (isCopy) *isCopy = JNI_TRUE; \
3660 ReturnProbe; \
3661 return result; \
3662 JNI_END
3663
3664 DEFINE_GETSCALARARRAYELEMENTS(T_BOOLEAN, jboolean, Boolean, bool
3665 , HOTSPOT_JNI_GETBOOLEANARRAYELEMENTS_ENTRY(env, array, (uintptr_t *) isCopy),
3666 HOTSPOT_JNI_GETBOOLEANARRAYELEMENTS_RETURN((uintptr_t*)result))
3667 DEFINE_GETSCALARARRAYELEMENTS(T_BYTE, jbyte, Byte, byte
3668 , HOTSPOT_JNI_GETBYTEARRAYELEMENTS_ENTRY(env, array, (uintptr_t *) isCopy),
3669 HOTSPOT_JNI_GETBYTEARRAYELEMENTS_RETURN((char*)result))
3670 DEFINE_GETSCALARARRAYELEMENTS(T_SHORT, jshort, Short, short
3671 , HOTSPOT_JNI_GETSHORTARRAYELEMENTS_ENTRY(env, (uint16_t*) array, (uintptr_t *) isCopy),
3672 HOTSPOT_JNI_GETSHORTARRAYELEMENTS_RETURN((uint16_t*)result))
3673 DEFINE_GETSCALARARRAYELEMENTS(T_CHAR, jchar, Char, char
3674 , HOTSPOT_JNI_GETCHARARRAYELEMENTS_ENTRY(env, (uint16_t*) array, (uintptr_t *) isCopy),
3675 HOTSPOT_JNI_GETCHARARRAYELEMENTS_RETURN(result))
3676 DEFINE_GETSCALARARRAYELEMENTS(T_INT, jint, Int, int
3677 , HOTSPOT_JNI_GETINTARRAYELEMENTS_ENTRY(env, array, (uintptr_t *) isCopy),
3678 HOTSPOT_JNI_GETINTARRAYELEMENTS_RETURN((uint32_t*)result))
3679 DEFINE_GETSCALARARRAYELEMENTS(T_LONG, jlong, Long, long
3680 , HOTSPOT_JNI_GETLONGARRAYELEMENTS_ENTRY(env, array, (uintptr_t *) isCopy),
3681 HOTSPOT_JNI_GETLONGARRAYELEMENTS_RETURN(((uintptr_t*)result)))
3682 // Float and double probes don't return value because dtrace doesn't currently support it
3683 DEFINE_GETSCALARARRAYELEMENTS(T_FLOAT, jfloat, Float, float
3684 , HOTSPOT_JNI_GETFLOATARRAYELEMENTS_ENTRY(env, array, (uintptr_t *) isCopy),
3685 HOTSPOT_JNI_GETFLOATARRAYELEMENTS_RETURN(result))
3686 DEFINE_GETSCALARARRAYELEMENTS(T_DOUBLE, jdouble, Double, double
3687 , HOTSPOT_JNI_GETDOUBLEARRAYELEMENTS_ENTRY(env, array, (uintptr_t *) isCopy),
3688 HOTSPOT_JNI_GETDOUBLEARRAYELEMENTS_RETURN(result))
3689 #endif /* USDT2 */
3690
3691 #ifndef USDT2
3692 #define DEFINE_RELEASESCALARARRAYELEMENTS(ElementTag,ElementType,Result,Tag) \
3693 \
3694 JNI_QUICK_ENTRY(void, \
3695 jni_Release##Result##ArrayElements(JNIEnv *env, ElementType##Array array, \
3696 ElementType *buf, jint mode)) \
3697 JNIWrapper("Release" XSTR(Result) "ArrayElements"); \
3698 DTRACE_PROBE4(hotspot_jni, Release##Result##ArrayElements__entry, env, array, buf, mode);\
3699 typeArrayOop a = typeArrayOop(JNIHandles::resolve_non_null(array)); \
3700 int len = a->length(); \
3701 if (len != 0) { /* Empty array: nothing to free or copy. */ \
3702 if ((mode == 0) || (mode == JNI_COMMIT)) { \
3703 memcpy(a->Tag##_at_addr(0), buf, sizeof(ElementType)*len); \
3704 } \
3705 if ((mode == 0) || (mode == JNI_ABORT)) { \
3706 FreeHeap(buf); \
3707 } \
3708 } \
3709 DTRACE_PROBE(hotspot_jni, Release##Result##ArrayElements__return);\
3710 JNI_END
3711
3712 DEFINE_RELEASESCALARARRAYELEMENTS(T_BOOLEAN, jboolean, Boolean, bool)
3713 DEFINE_RELEASESCALARARRAYELEMENTS(T_BYTE, jbyte, Byte, byte)
3714 DEFINE_RELEASESCALARARRAYELEMENTS(T_SHORT, jshort, Short, short)
3715 DEFINE_RELEASESCALARARRAYELEMENTS(T_CHAR, jchar, Char, char)
3716 DEFINE_RELEASESCALARARRAYELEMENTS(T_INT, jint, Int, int)
3717 DEFINE_RELEASESCALARARRAYELEMENTS(T_LONG, jlong, Long, long)
3718 DEFINE_RELEASESCALARARRAYELEMENTS(T_FLOAT, jfloat, Float, float)
3719 DEFINE_RELEASESCALARARRAYELEMENTS(T_DOUBLE, jdouble, Double, double)
3720
3721 #else /* USDT2 */
3722
3723 #define DEFINE_RELEASESCALARARRAYELEMENTS(ElementTag,ElementType,Result,Tag \
3724 , EntryProbe, ReturnProbe);\
3725 \
3726 JNI_QUICK_ENTRY(void, \
3727 jni_Release##Result##ArrayElements(JNIEnv *env, ElementType##Array array, \
3728 ElementType *buf, jint mode)) \
3729 JNIWrapper("Release" XSTR(Result) "ArrayElements"); \
3730 EntryProbe; \
3731 typeArrayOop a = typeArrayOop(JNIHandles::resolve_non_null(array)); \
3732 int len = a->length(); \
3733 if (len != 0) { /* Empty array: nothing to free or copy. */ \
3734 if ((mode == 0) || (mode == JNI_COMMIT)) { \
3735 memcpy(a->Tag##_at_addr(0), buf, sizeof(ElementType)*len); \
3736 } \
3737 if ((mode == 0) || (mode == JNI_ABORT)) { \
3738 FreeHeap(buf); \
3739 } \
3740 } \
3741 ReturnProbe; \
3742 JNI_END
3743
3744 DEFINE_RELEASESCALARARRAYELEMENTS(T_BOOLEAN, jboolean, Boolean, bool
3745 , HOTSPOT_JNI_RELEASEBOOLEANARRAYELEMENTS_ENTRY(env, array, (uintptr_t *) buf, mode),
3746 HOTSPOT_JNI_RELEASEBOOLEANARRAYELEMENTS_RETURN())
3747 DEFINE_RELEASESCALARARRAYELEMENTS(T_BYTE, jbyte, Byte, byte
3748 , HOTSPOT_JNI_RELEASEBYTEARRAYELEMENTS_ENTRY(env, array, (char *) buf, mode),
3749 HOTSPOT_JNI_RELEASEBYTEARRAYELEMENTS_RETURN())
3750 DEFINE_RELEASESCALARARRAYELEMENTS(T_SHORT, jshort, Short, short
3751 , HOTSPOT_JNI_RELEASESHORTARRAYELEMENTS_ENTRY(env, array, (uint16_t *) buf, mode),
3752 HOTSPOT_JNI_RELEASESHORTARRAYELEMENTS_RETURN())
3753 DEFINE_RELEASESCALARARRAYELEMENTS(T_CHAR, jchar, Char, char
3754 , HOTSPOT_JNI_RELEASECHARARRAYELEMENTS_ENTRY(env, array, (uint16_t *) buf, mode),
3755 HOTSPOT_JNI_RELEASECHARARRAYELEMENTS_RETURN())
3756 DEFINE_RELEASESCALARARRAYELEMENTS(T_INT, jint, Int, int
3757 , HOTSPOT_JNI_RELEASEINTARRAYELEMENTS_ENTRY(env, array, (uint32_t *) buf, mode),
3758 HOTSPOT_JNI_RELEASEINTARRAYELEMENTS_RETURN())
3759 DEFINE_RELEASESCALARARRAYELEMENTS(T_LONG, jlong, Long, long
3760 , HOTSPOT_JNI_RELEASELONGARRAYELEMENTS_ENTRY(env, array, (uintptr_t *) buf, mode),
3761 HOTSPOT_JNI_RELEASELONGARRAYELEMENTS_RETURN())
3762 DEFINE_RELEASESCALARARRAYELEMENTS(T_FLOAT, jfloat, Float, float
3763 , HOTSPOT_JNI_RELEASEFLOATARRAYELEMENTS_ENTRY(env, array, (float *) buf, mode),
3764 HOTSPOT_JNI_RELEASEFLOATARRAYELEMENTS_RETURN())
3765 DEFINE_RELEASESCALARARRAYELEMENTS(T_DOUBLE, jdouble, Double, double
3766 , HOTSPOT_JNI_RELEASEDOUBLEARRAYELEMENTS_ENTRY(env, array, (double *) buf, mode),
3767 HOTSPOT_JNI_RELEASEDOUBLEARRAYELEMENTS_RETURN())
3768 #endif /* USDT2 */
3769
3770 #ifndef USDT2
3771 #define DEFINE_GETSCALARARRAYREGION(ElementTag,ElementType,Result, Tag) \
3772 DT_VOID_RETURN_MARK_DECL(Get##Result##ArrayRegion);\
3773 \
3774 JNI_ENTRY(void, \
3775 jni_Get##Result##ArrayRegion(JNIEnv *env, ElementType##Array array, jsize start, \
3776 jsize len, ElementType *buf)) \
3777 JNIWrapper("Get" XSTR(Result) "ArrayRegion"); \
3778 DTRACE_PROBE5(hotspot_jni, Get##Result##ArrayRegion__entry, env, array, start, len, buf);\
3779 DT_VOID_RETURN_MARK(Get##Result##ArrayRegion); \
3780 typeArrayOop src = typeArrayOop(JNIHandles::resolve_non_null(array)); \
3781 if (start < 0 || len < 0 || ((unsigned int)start + (unsigned int)len > (unsigned int)src->length())) { \
3782 THROW(vmSymbols::java_lang_ArrayIndexOutOfBoundsException()); \
3783 } else { \
3784 if (len > 0) { \
3785 int sc = typeArrayKlass::cast(src->klass())->log2_element_size(); \
3786 memcpy((u_char*) buf, \
3787 (u_char*) src->Tag##_at_addr(start), \
3788 len << sc); \
3789 } \
3790 } \
3791 JNI_END
3792
3793 DEFINE_GETSCALARARRAYREGION(T_BOOLEAN, jboolean,Boolean, bool)
3794 DEFINE_GETSCALARARRAYREGION(T_BYTE, jbyte, Byte, byte)
3795 DEFINE_GETSCALARARRAYREGION(T_SHORT, jshort, Short, short)
3796 DEFINE_GETSCALARARRAYREGION(T_CHAR, jchar, Char, char)
3797 DEFINE_GETSCALARARRAYREGION(T_INT, jint, Int, int)
3798 DEFINE_GETSCALARARRAYREGION(T_LONG, jlong, Long, long)
3799 DEFINE_GETSCALARARRAYREGION(T_FLOAT, jfloat, Float, float)
3800 DEFINE_GETSCALARARRAYREGION(T_DOUBLE, jdouble, Double, double)
3801
3802 #else /* USDT2 */
3803
3804 #define DEFINE_GETSCALARARRAYREGION(ElementTag,ElementType,Result, Tag \
3805 , EntryProbe, ReturnProbe); \
3806 DT_VOID_RETURN_MARK_DECL(Get##Result##ArrayRegion \
3807 , ReturnProbe); \
3808 \
3809 JNI_ENTRY(void, \
3810 jni_Get##Result##ArrayRegion(JNIEnv *env, ElementType##Array array, jsize start, \
3811 jsize len, ElementType *buf)) \
3812 JNIWrapper("Get" XSTR(Result) "ArrayRegion"); \
3813 EntryProbe; \
3814 DT_VOID_RETURN_MARK(Get##Result##ArrayRegion); \
3815 typeArrayOop src = typeArrayOop(JNIHandles::resolve_non_null(array)); \
3816 if (start < 0 || len < 0 || ((unsigned int)start + (unsigned int)len > (unsigned int)src->length())) { \
3817 THROW(vmSymbols::java_lang_ArrayIndexOutOfBoundsException()); \
3818 } else { \
3819 if (len > 0) { \
3820 int sc = typeArrayKlass::cast(src->klass())->log2_element_size(); \
3821 memcpy((u_char*) buf, \
3822 (u_char*) src->Tag##_at_addr(start), \
3823 len << sc); \
3824 } \
3825 } \
3826 JNI_END
3827
3828 DEFINE_GETSCALARARRAYREGION(T_BOOLEAN, jboolean,Boolean, bool
3829 , HOTSPOT_JNI_GETBOOLEANARRAYREGION_ENTRY(env, array, start, len, (uintptr_t *) buf),
3830 HOTSPOT_JNI_GETBOOLEANARRAYREGION_RETURN());
3831 DEFINE_GETSCALARARRAYREGION(T_BYTE, jbyte, Byte, byte
3832 , HOTSPOT_JNI_GETBYTEARRAYREGION_ENTRY(env, array, start, len, (char *) buf),
3833 HOTSPOT_JNI_GETBYTEARRAYREGION_RETURN());
3834 DEFINE_GETSCALARARRAYREGION(T_SHORT, jshort, Short, short
3835 , HOTSPOT_JNI_GETSHORTARRAYREGION_ENTRY(env, array, start, len, (uint16_t *) buf),
3836 HOTSPOT_JNI_GETSHORTARRAYREGION_RETURN());
3837 DEFINE_GETSCALARARRAYREGION(T_CHAR, jchar, Char, char
3838 , HOTSPOT_JNI_GETCHARARRAYREGION_ENTRY(env, array, start, len, (uint16_t*) buf),
3839 HOTSPOT_JNI_GETCHARARRAYREGION_RETURN());
3840 DEFINE_GETSCALARARRAYREGION(T_INT, jint, Int, int
3841 , HOTSPOT_JNI_GETINTARRAYREGION_ENTRY(env, array, start, len, (uint32_t*) buf),
3842 HOTSPOT_JNI_GETINTARRAYREGION_RETURN());
3843 DEFINE_GETSCALARARRAYREGION(T_LONG, jlong, Long, long
3844 , HOTSPOT_JNI_GETLONGARRAYREGION_ENTRY(env, array, start, len, (uintptr_t *) buf),
3845 HOTSPOT_JNI_GETLONGARRAYREGION_RETURN());
3846 DEFINE_GETSCALARARRAYREGION(T_FLOAT, jfloat, Float, float
3847 , HOTSPOT_JNI_GETFLOATARRAYREGION_ENTRY(env, array, start, len, (float *) buf),
3848 HOTSPOT_JNI_GETFLOATARRAYREGION_RETURN());
3849 DEFINE_GETSCALARARRAYREGION(T_DOUBLE, jdouble, Double, double
3850 , HOTSPOT_JNI_GETDOUBLEARRAYREGION_ENTRY(env, array, start, len, (double *) buf),
3851 HOTSPOT_JNI_GETDOUBLEARRAYREGION_RETURN());
3852 #endif /* USDT2 */
3853
3854 #ifndef USDT2
3855 #define DEFINE_SETSCALARARRAYREGION(ElementTag,ElementType,Result, Tag) \
3856 DT_VOID_RETURN_MARK_DECL(Set##Result##ArrayRegion);\
3857 \
3858 JNI_ENTRY(void, \
3859 jni_Set##Result##ArrayRegion(JNIEnv *env, ElementType##Array array, jsize start, \
3860 jsize len, const ElementType *buf)) \
3861 JNIWrapper("Set" XSTR(Result) "ArrayRegion"); \
3862 DTRACE_PROBE5(hotspot_jni, Set##Result##ArrayRegion__entry, env, array, start, len, buf);\
3863 DT_VOID_RETURN_MARK(Set##Result##ArrayRegion); \
3864 typeArrayOop dst = typeArrayOop(JNIHandles::resolve_non_null(array)); \
3865 if (start < 0 || len < 0 || ((unsigned int)start + (unsigned int)len > (unsigned int)dst->length())) { \
3866 THROW(vmSymbols::java_lang_ArrayIndexOutOfBoundsException()); \
3867 } else { \
3868 if (len > 0) { \
3869 int sc = typeArrayKlass::cast(dst->klass())->log2_element_size(); \
3870 memcpy((u_char*) dst->Tag##_at_addr(start), \
3871 (u_char*) buf, \
3872 len << sc); \
3873 } \
3874 } \
3875 JNI_END
3876
3877 DEFINE_SETSCALARARRAYREGION(T_BOOLEAN, jboolean, Boolean, bool)
3878 DEFINE_SETSCALARARRAYREGION(T_BYTE, jbyte, Byte, byte)
3879 DEFINE_SETSCALARARRAYREGION(T_SHORT, jshort, Short, short)
3880 DEFINE_SETSCALARARRAYREGION(T_CHAR, jchar, Char, char)
3881 DEFINE_SETSCALARARRAYREGION(T_INT, jint, Int, int)
3882 DEFINE_SETSCALARARRAYREGION(T_LONG, jlong, Long, long)
3883 DEFINE_SETSCALARARRAYREGION(T_FLOAT, jfloat, Float, float)
3884 DEFINE_SETSCALARARRAYREGION(T_DOUBLE, jdouble, Double, double)
3885
3886 #else /* USDT2 */
3887
3888 #define DEFINE_SETSCALARARRAYREGION(ElementTag,ElementType,Result, Tag \
3889 , EntryProbe, ReturnProbe); \
3890 DT_VOID_RETURN_MARK_DECL(Set##Result##ArrayRegion \
3891 ,ReturnProbe); \
3892 \
3893 JNI_ENTRY(void, \
3894 jni_Set##Result##ArrayRegion(JNIEnv *env, ElementType##Array array, jsize start, \
3895 jsize len, const ElementType *buf)) \
3896 JNIWrapper("Set" XSTR(Result) "ArrayRegion"); \
3897 EntryProbe; \
3898 DT_VOID_RETURN_MARK(Set##Result##ArrayRegion); \
3899 typeArrayOop dst = typeArrayOop(JNIHandles::resolve_non_null(array)); \
3900 if (start < 0 || len < 0 || ((unsigned int)start + (unsigned int)len > (unsigned int)dst->length())) { \
3901 THROW(vmSymbols::java_lang_ArrayIndexOutOfBoundsException()); \
3902 } else { \
3903 if (len > 0) { \
3904 int sc = typeArrayKlass::cast(dst->klass())->log2_element_size(); \
3905 memcpy((u_char*) dst->Tag##_at_addr(start), \
3906 (u_char*) buf, \
3907 len << sc); \
3908 } \
3909 } \
3910 JNI_END
3911
3912 DEFINE_SETSCALARARRAYREGION(T_BOOLEAN, jboolean, Boolean, bool
3913 , HOTSPOT_JNI_SETBOOLEANARRAYREGION_ENTRY(env, array, start, len, (uintptr_t *)buf),
3914 HOTSPOT_JNI_SETBOOLEANARRAYREGION_RETURN())
3915 DEFINE_SETSCALARARRAYREGION(T_BYTE, jbyte, Byte, byte
3916 , HOTSPOT_JNI_SETBYTEARRAYREGION_ENTRY(env, array, start, len, (char *) buf),
3917 HOTSPOT_JNI_SETBYTEARRAYREGION_RETURN())
3918 DEFINE_SETSCALARARRAYREGION(T_SHORT, jshort, Short, short
3919 , HOTSPOT_JNI_SETSHORTARRAYREGION_ENTRY(env, array, start, len, (uint16_t *) buf),
3920 HOTSPOT_JNI_SETSHORTARRAYREGION_RETURN())
3921 DEFINE_SETSCALARARRAYREGION(T_CHAR, jchar, Char, char
3922 , HOTSPOT_JNI_SETCHARARRAYREGION_ENTRY(env, array, start, len, (uint16_t *) buf),
3923 HOTSPOT_JNI_SETCHARARRAYREGION_RETURN())
3924 DEFINE_SETSCALARARRAYREGION(T_INT, jint, Int, int
3925 , HOTSPOT_JNI_SETINTARRAYREGION_ENTRY(env, array, start, len, (uint32_t *) buf),
3926 HOTSPOT_JNI_SETINTARRAYREGION_RETURN())
3927 DEFINE_SETSCALARARRAYREGION(T_LONG, jlong, Long, long
3928 , HOTSPOT_JNI_SETLONGARRAYREGION_ENTRY(env, array, start, len, (uintptr_t *) buf),
3929 HOTSPOT_JNI_SETLONGARRAYREGION_RETURN())
3930 DEFINE_SETSCALARARRAYREGION(T_FLOAT, jfloat, Float, float
3931 , HOTSPOT_JNI_SETFLOATARRAYREGION_ENTRY(env, array, start, len, (float *) buf),
3932 HOTSPOT_JNI_SETFLOATARRAYREGION_RETURN())
3933 DEFINE_SETSCALARARRAYREGION(T_DOUBLE, jdouble, Double, double
3934 , HOTSPOT_JNI_SETDOUBLEARRAYREGION_ENTRY(env, array, start, len, (double *) buf),
3935 HOTSPOT_JNI_SETDOUBLEARRAYREGION_RETURN())
3936 #endif /* USDT2 */
3937
3938
3939 //
3940 // Interception of natives
3941 //
3942
3943 // The RegisterNatives call being attempted tried to register with a method that
3944 // is not native. Ask JVM TI what prefixes have been specified. Then check
3945 // to see if the native method is now wrapped with the prefixes. See the
3946 // SetNativeMethodPrefix(es) functions in the JVM TI Spec for details.
3947 static methodOop find_prefixed_native(KlassHandle k,
3948 Symbol* name, Symbol* signature, TRAPS) {
3949 ResourceMark rm(THREAD);
3950 methodOop method;
3951 int name_len = name->utf8_length();
3952 char* name_str = name->as_utf8();
3953 int prefix_count;
3954 char** prefixes = JvmtiExport::get_all_native_method_prefixes(&prefix_count);
3955 for (int i = 0; i < prefix_count; i++) {
3956 char* prefix = prefixes[i];
3957 int prefix_len = (int)strlen(prefix);
3958
3959 // try adding this prefix to the method name and see if it matches another method name
3960 int trial_len = name_len + prefix_len;
3961 char* trial_name_str = NEW_RESOURCE_ARRAY(char, trial_len + 1);
3962 strcpy(trial_name_str, prefix);
3963 strcat(trial_name_str, name_str);
3964 TempNewSymbol trial_name = SymbolTable::probe(trial_name_str, trial_len);
3965 if (trial_name == NULL) {
3966 continue; // no such symbol, so this prefix wasn't used, try the next prefix
3967 }
3968 method = Klass::cast(k())->lookup_method(trial_name, signature);
3969 if (method == NULL) {
3970 continue; // signature doesn't match, try the next prefix
3971 }
3972 if (method->is_native()) {
3973 method->set_is_prefixed_native();
3974 return method; // wahoo, we found a prefixed version of the method, return it
3975 }
3976 // found as non-native, so prefix is good, add it, probably just need more prefixes
3977 name_len = trial_len;
3978 name_str = trial_name_str;
3979 }
3980 return NULL; // not found
3981 }
3982
3983 static bool register_native(KlassHandle k, Symbol* name, Symbol* signature, address entry, TRAPS) {
3984 methodOop method = Klass::cast(k())->lookup_method(name, signature);
3985 if (method == NULL) {
3986 ResourceMark rm;
3987 stringStream st;
3988 st.print("Method %s name or signature does not match",
3989 methodOopDesc::name_and_sig_as_C_string(Klass::cast(k()), name, signature));
3990 THROW_MSG_(vmSymbols::java_lang_NoSuchMethodError(), st.as_string(), false);
3991 }
3992 if (!method->is_native()) {
3993 // trying to register to a non-native method, see if a JVM TI agent has added prefix(es)
3994 method = find_prefixed_native(k, name, signature, THREAD);
3995 if (method == NULL) {
3996 ResourceMark rm;
3997 stringStream st;
3998 st.print("Method %s is not declared as native",
3999 methodOopDesc::name_and_sig_as_C_string(Klass::cast(k()), name, signature));
4000 THROW_MSG_(vmSymbols::java_lang_NoSuchMethodError(), st.as_string(), false);
4001 }
4002 }
4003
4004 if (entry != NULL) {
4005 method->set_native_function(entry,
4006 methodOopDesc::native_bind_event_is_interesting);
4007 } else {
4008 method->clear_native_function();
4009 }
4010 if (PrintJNIResolving) {
4011 ResourceMark rm(THREAD);
4012 tty->print_cr("[Registering JNI native method %s.%s]",
4013 Klass::cast(method->method_holder())->external_name(),
4014 method->name()->as_C_string());
4015 }
4016 return true;
4017 }
4018
4019 #ifndef USDT2
4020 DT_RETURN_MARK_DECL(RegisterNatives, jint);
4021 #else /* USDT2 */
4022 DT_RETURN_MARK_DECL(RegisterNatives, jint
4023 , HOTSPOT_JNI_REGISTERNATIVES_RETURN(_ret_ref));
4024 #endif /* USDT2 */
4025
4026 JNI_ENTRY(jint, jni_RegisterNatives(JNIEnv *env, jclass clazz,
4027 const JNINativeMethod *methods,
4028 jint nMethods))
4029 JNIWrapper("RegisterNatives");
4030 #ifndef USDT2
4031 DTRACE_PROBE4(hotspot_jni, RegisterNatives__entry, env, clazz, methods, nMethods);
4032 #else /* USDT2 */
4033 HOTSPOT_JNI_REGISTERNATIVES_ENTRY(
4034 env, clazz, (void *) methods, nMethods);
4035 #endif /* USDT2 */
4036 jint ret = 0;
4037 DT_RETURN_MARK(RegisterNatives, jint, (const jint&)ret);
4038
4039 KlassHandle h_k(thread, java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(clazz)));
4040
4041 for (int index = 0; index < nMethods; index++) {
4042 const char* meth_name = methods[index].name;
4043 const char* meth_sig = methods[index].signature;
4044 int meth_name_len = (int)strlen(meth_name);
4045
4046 // The class should have been loaded (we have an instance of the class
4047 // passed in) so the method and signature should already be in the symbol
4048 // table. If they're not there, the method doesn't exist.
4049 TempNewSymbol name = SymbolTable::probe(meth_name, meth_name_len);
4050 TempNewSymbol signature = SymbolTable::probe(meth_sig, (int)strlen(meth_sig));
4051
4052 if (name == NULL || signature == NULL) {
4053 ResourceMark rm;
4054 stringStream st;
4055 st.print("Method %s.%s%s not found", Klass::cast(h_k())->external_name(), meth_name, meth_sig);
4056 // Must return negative value on failure
4057 THROW_MSG_(vmSymbols::java_lang_NoSuchMethodError(), st.as_string(), -1);
4058 }
4059
4060 bool res = register_native(h_k, name, signature,
4061 (address) methods[index].fnPtr, THREAD);
4062 if (!res) {
4063 ret = -1;
4064 break;
4065 }
4066 }
4067 return ret;
4068 JNI_END
4069
4070
4071 JNI_ENTRY(jint, jni_UnregisterNatives(JNIEnv *env, jclass clazz))
4072 JNIWrapper("UnregisterNatives");
4073 #ifndef USDT2
4074 DTRACE_PROBE2(hotspot_jni, UnregisterNatives__entry, env, clazz);
4075 #else /* USDT2 */
4076 HOTSPOT_JNI_UNREGISTERNATIVES_ENTRY(
4077 env, clazz);
4078 #endif /* USDT2 */
4079 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(clazz));
4080 //%note jni_2
4081 if (Klass::cast(k)->oop_is_instance()) {
4082 for (int index = 0; index < instanceKlass::cast(k)->methods()->length(); index++) {
4083 methodOop m = methodOop(instanceKlass::cast(k)->methods()->obj_at(index));
4084 if (m->is_native()) {
4085 m->clear_native_function();
4086 m->set_signature_handler(NULL);
4087 }
4088 }
4089 }
4090 #ifndef USDT2
4091 DTRACE_PROBE1(hotspot_jni, UnregisterNatives__return, 0);
4092 #else /* USDT2 */
4093 HOTSPOT_JNI_UNREGISTERNATIVES_RETURN(
4094 0);
4095 #endif /* USDT2 */
4096 return 0;
4097 JNI_END
4098
4099 //
4100 // Monitor functions
4101 //
4102
4103 #ifndef USDT2
4104 DT_RETURN_MARK_DECL(MonitorEnter, jint);
4105 #else /* USDT2 */
4106 DT_RETURN_MARK_DECL(MonitorEnter, jint
4107 , HOTSPOT_JNI_MONITORENTER_RETURN(_ret_ref));
4108 #endif /* USDT2 */
4109
4110 JNI_ENTRY(jint, jni_MonitorEnter(JNIEnv *env, jobject jobj))
4111 #ifndef USDT2
4112 DTRACE_PROBE2(hotspot_jni, MonitorEnter__entry, env, jobj);
4113 #else /* USDT2 */
4114 HOTSPOT_JNI_MONITORENTER_ENTRY(
4115 env, jobj);
4116 #endif /* USDT2 */
4117 jint ret = JNI_ERR;
4118 DT_RETURN_MARK(MonitorEnter, jint, (const jint&)ret);
4119
4120 // If the object is null, we can't do anything with it
4121 if (jobj == NULL) {
4122 THROW_(vmSymbols::java_lang_NullPointerException(), JNI_ERR);
4123 }
4124
4125 Handle obj(thread, JNIHandles::resolve_non_null(jobj));
4126 ObjectSynchronizer::jni_enter(obj, CHECK_(JNI_ERR));
4127 ret = JNI_OK;
4128 return ret;
4129 JNI_END
4130
4131 #ifndef USDT2
4132 DT_RETURN_MARK_DECL(MonitorExit, jint);
4133 #else /* USDT2 */
4134 DT_RETURN_MARK_DECL(MonitorExit, jint
4135 , HOTSPOT_JNI_MONITOREXIT_RETURN(_ret_ref));
4136 #endif /* USDT2 */
4137
4138 JNI_ENTRY(jint, jni_MonitorExit(JNIEnv *env, jobject jobj))
4139 #ifndef USDT2
4140 DTRACE_PROBE2(hotspot_jni, MonitorExit__entry, env, jobj);
4141 #else /* USDT2 */
4142 HOTSPOT_JNI_MONITOREXIT_ENTRY(
4143 env, jobj);
4144 #endif /* USDT2 */
4145 jint ret = JNI_ERR;
4146 DT_RETURN_MARK(MonitorExit, jint, (const jint&)ret);
4147
4148 // Don't do anything with a null object
4149 if (jobj == NULL) {
4150 THROW_(vmSymbols::java_lang_NullPointerException(), JNI_ERR);
4151 }
4152
4153 Handle obj(THREAD, JNIHandles::resolve_non_null(jobj));
4154 ObjectSynchronizer::jni_exit(obj(), CHECK_(JNI_ERR));
4155
4156 ret = JNI_OK;
4157 return ret;
4158 JNI_END
4159
4160 //
4161 // Extensions
4162 //
4163
4164 #ifndef USDT2
4165 DT_VOID_RETURN_MARK_DECL(GetStringRegion);
4166 #else /* USDT2 */
4167 DT_VOID_RETURN_MARK_DECL(GetStringRegion
4168 , HOTSPOT_JNI_GETSTRINGREGION_RETURN());
4169 #endif /* USDT2 */
4170
4171 JNI_ENTRY(void, jni_GetStringRegion(JNIEnv *env, jstring string, jsize start, jsize len, jchar *buf))
4172 JNIWrapper("GetStringRegion");
4173 #ifndef USDT2
4174 DTRACE_PROBE5(hotspot_jni, GetStringRegion__entry, env, string, start, len, buf);
4175 #else /* USDT2 */
4176 HOTSPOT_JNI_GETSTRINGREGION_ENTRY(
4177 env, string, start, len, buf);
4178 #endif /* USDT2 */
4179 DT_VOID_RETURN_MARK(GetStringRegion);
4180 oop s = JNIHandles::resolve_non_null(string);
4181 int s_len = java_lang_String::length(s);
4182 if (start < 0 || len < 0 || start + len > s_len) {
4183 THROW(vmSymbols::java_lang_StringIndexOutOfBoundsException());
4184 } else {
4185 if (len > 0) {
4186 int s_offset = java_lang_String::offset(s);
4187 typeArrayOop s_value = java_lang_String::value(s);
4188 memcpy(buf, s_value->char_at_addr(s_offset+start), sizeof(jchar)*len);
4189 }
4190 }
4191 JNI_END
4192
4193 #ifndef USDT2
4194 DT_VOID_RETURN_MARK_DECL(GetStringUTFRegion);
4195 #else /* USDT2 */
4196 DT_VOID_RETURN_MARK_DECL(GetStringUTFRegion
4197 , HOTSPOT_JNI_GETSTRINGUTFREGION_RETURN());
4198 #endif /* USDT2 */
4199
4200 JNI_ENTRY(void, jni_GetStringUTFRegion(JNIEnv *env, jstring string, jsize start, jsize len, char *buf))
4201 JNIWrapper("GetStringUTFRegion");
4202 #ifndef USDT2
4203 DTRACE_PROBE5(hotspot_jni, GetStringUTFRegion__entry, env, string, start, len, buf);
4204 #else /* USDT2 */
4205 HOTSPOT_JNI_GETSTRINGUTFREGION_ENTRY(
4206 env, string, start, len, buf);
4207 #endif /* USDT2 */
4208 DT_VOID_RETURN_MARK(GetStringUTFRegion);
4209 oop s = JNIHandles::resolve_non_null(string);
4210 int s_len = java_lang_String::length(s);
4211 if (start < 0 || len < 0 || start + len > s_len) {
4212 THROW(vmSymbols::java_lang_StringIndexOutOfBoundsException());
4213 } else {
4214 //%note jni_7
4215 if (len > 0) {
4216 ResourceMark rm(THREAD);
4217 char *utf_region = java_lang_String::as_utf8_string(s, start, len);
4218 int utf_len = (int)strlen(utf_region);
4219 memcpy(buf, utf_region, utf_len);
4220 buf[utf_len] = 0;
4221 } else {
4222 // JDK null-terminates the buffer even in len is zero
4223 if (buf != NULL) {
4224 buf[0] = 0;
4225 }
4226 }
4227 }
4228 JNI_END
4229
4230
4231 JNI_ENTRY(void*, jni_GetPrimitiveArrayCritical(JNIEnv *env, jarray array, jboolean *isCopy))
4232 JNIWrapper("GetPrimitiveArrayCritical");
4233 #ifndef USDT2
4234 DTRACE_PROBE3(hotspot_jni, GetPrimitiveArrayCritical__entry, env, array, isCopy);
4235 #else /* USDT2 */
4236 HOTSPOT_JNI_GETPRIMITIVEARRAYCRITICAL_ENTRY(
4237 env, array, (uintptr_t *) isCopy);
4238 #endif /* USDT2 */
4239 GC_locker::lock_critical(thread);
4240 if (isCopy != NULL) {
4241 *isCopy = JNI_FALSE;
4242 }
4243 oop a = JNIHandles::resolve_non_null(array);
4244 assert(a->is_array(), "just checking");
4245 BasicType type;
4246 if (a->is_objArray()) {
4247 type = T_OBJECT;
4248 } else {
4249 type = typeArrayKlass::cast(a->klass())->element_type();
4250 }
4251 void* ret = arrayOop(a)->base(type);
4252 #ifndef USDT2
4253 DTRACE_PROBE1(hotspot_jni, GetPrimitiveArrayCritical__return, ret);
4254 #else /* USDT2 */
4255 HOTSPOT_JNI_GETPRIMITIVEARRAYCRITICAL_RETURN(
4256 ret);
4257 #endif /* USDT2 */
4258 return ret;
4259 JNI_END
4260
4261
4262 JNI_ENTRY(void, jni_ReleasePrimitiveArrayCritical(JNIEnv *env, jarray array, void *carray, jint mode))
4263 JNIWrapper("ReleasePrimitiveArrayCritical");
4264 #ifndef USDT2
4265 DTRACE_PROBE4(hotspot_jni, ReleasePrimitiveArrayCritical__entry, env, array, carray, mode);
4266 #else /* USDT2 */
4267 HOTSPOT_JNI_RELEASEPRIMITIVEARRAYCRITICAL_ENTRY(
4268 env, array, carray, mode);
4269 #endif /* USDT2 */
4270 // The array, carray and mode arguments are ignored
4271 GC_locker::unlock_critical(thread);
4272 #ifndef USDT2
4273 DTRACE_PROBE(hotspot_jni, ReleasePrimitiveArrayCritical__return);
4274 #else /* USDT2 */
4275 HOTSPOT_JNI_RELEASEPRIMITIVEARRAYCRITICAL_RETURN(
4276 );
4277 #endif /* USDT2 */
4278 JNI_END
4279
4280
4281 JNI_ENTRY(const jchar*, jni_GetStringCritical(JNIEnv *env, jstring string, jboolean *isCopy))
4282 JNIWrapper("GetStringCritical");
4283 #ifndef USDT2
4284 DTRACE_PROBE3(hotspot_jni, GetStringCritical__entry, env, string, isCopy);
4285 #else /* USDT2 */
4286 HOTSPOT_JNI_GETSTRINGCRITICAL_ENTRY(
4287 env, string, (uintptr_t *) isCopy);
4288 #endif /* USDT2 */
4289 GC_locker::lock_critical(thread);
4290 if (isCopy != NULL) {
4291 *isCopy = JNI_FALSE;
4292 }
4293 oop s = JNIHandles::resolve_non_null(string);
4294 int s_len = java_lang_String::length(s);
4295 typeArrayOop s_value = java_lang_String::value(s);
4296 int s_offset = java_lang_String::offset(s);
4297 const jchar* ret;
4298 if (s_len > 0) {
4299 ret = s_value->char_at_addr(s_offset);
4300 } else {
4301 ret = (jchar*) s_value->base(T_CHAR);
4302 }
4303 #ifndef USDT2
4304 DTRACE_PROBE1(hotspot_jni, GetStringCritical__return, ret);
4305 #else /* USDT2 */
4306 HOTSPOT_JNI_GETSTRINGCRITICAL_RETURN(
4307 (uint16_t *) ret);
4308 #endif /* USDT2 */
4309 return ret;
4310 JNI_END
4311
4312
4313 JNI_ENTRY(void, jni_ReleaseStringCritical(JNIEnv *env, jstring str, const jchar *chars))
4314 JNIWrapper("ReleaseStringCritical");
4315 #ifndef USDT2
4316 DTRACE_PROBE3(hotspot_jni, ReleaseStringCritical__entry, env, str, chars);
4317 #else /* USDT2 */
4318 HOTSPOT_JNI_RELEASESTRINGCRITICAL_ENTRY(
4319 env, str, (uint16_t *) chars);
4320 #endif /* USDT2 */
4321 // The str and chars arguments are ignored
4322 GC_locker::unlock_critical(thread);
4323 #ifndef USDT2
4324 DTRACE_PROBE(hotspot_jni, ReleaseStringCritical__return);
4325 #else /* USDT2 */
4326 HOTSPOT_JNI_RELEASESTRINGCRITICAL_RETURN(
4327 );
4328 #endif /* USDT2 */
4329 JNI_END
4330
4331
4332 JNI_ENTRY(jweak, jni_NewWeakGlobalRef(JNIEnv *env, jobject ref))
4333 JNIWrapper("jni_NewWeakGlobalRef");
4334 #ifndef USDT2
4335 DTRACE_PROBE2(hotspot_jni, NewWeakGlobalRef__entry, env, ref);
4336 #else /* USDT2 */
4337 HOTSPOT_JNI_NEWWEAKGLOBALREF_ENTRY(
4338 env, ref);
4339 #endif /* USDT2 */
4340 Handle ref_handle(thread, JNIHandles::resolve(ref));
4341 jweak ret = JNIHandles::make_weak_global(ref_handle);
4342 #ifndef USDT2
4343 DTRACE_PROBE1(hotspot_jni, NewWeakGlobalRef__return, ret);
4344 #else /* USDT2 */
4345 HOTSPOT_JNI_NEWWEAKGLOBALREF_RETURN(
4346 ret);
4347 #endif /* USDT2 */
4348 return ret;
4349 JNI_END
4350
4351 // Must be JNI_ENTRY (with HandleMark)
4352 JNI_ENTRY(void, jni_DeleteWeakGlobalRef(JNIEnv *env, jweak ref))
4353 JNIWrapper("jni_DeleteWeakGlobalRef");
4354 #ifndef USDT2
4355 DTRACE_PROBE2(hotspot_jni, DeleteWeakGlobalRef__entry, env, ref);
4356 #else /* USDT2 */
4357 HOTSPOT_JNI_DELETEWEAKGLOBALREF_ENTRY(
4358 env, ref);
4359 #endif /* USDT2 */
4360 JNIHandles::destroy_weak_global(ref);
4361 #ifndef USDT2
4362 DTRACE_PROBE(hotspot_jni, DeleteWeakGlobalRef__return);
4363 #else /* USDT2 */
4364 HOTSPOT_JNI_DELETEWEAKGLOBALREF_RETURN(
4365 );
4366 #endif /* USDT2 */
4367 JNI_END
4368
4369
4370 JNI_QUICK_ENTRY(jboolean, jni_ExceptionCheck(JNIEnv *env))
4371 JNIWrapper("jni_ExceptionCheck");
4372 #ifndef USDT2
4373 DTRACE_PROBE1(hotspot_jni, ExceptionCheck__entry, env);
4374 #else /* USDT2 */
4375 HOTSPOT_JNI_EXCEPTIONCHECK_ENTRY(
4376 env);
4377 #endif /* USDT2 */
4378 jni_check_async_exceptions(thread);
4379 jboolean ret = (thread->has_pending_exception()) ? JNI_TRUE : JNI_FALSE;
4380 #ifndef USDT2
4381 DTRACE_PROBE1(hotspot_jni, ExceptionCheck__return, ret);
4382 #else /* USDT2 */
4383 HOTSPOT_JNI_EXCEPTIONCHECK_RETURN(
4384 ret);
4385 #endif /* USDT2 */
4386 return ret;
4387 JNI_END
4388
4389
4390 // Initialization state for three routines below relating to
4391 // java.nio.DirectBuffers
4392 static jint directBufferSupportInitializeStarted = 0;
4393 static volatile jint directBufferSupportInitializeEnded = 0;
4394 static volatile jint directBufferSupportInitializeFailed = 0;
4395 static jclass bufferClass = NULL;
4396 static jclass directBufferClass = NULL;
4397 static jclass directByteBufferClass = NULL;
4398 static jmethodID directByteBufferConstructor = NULL;
4399 static jfieldID directBufferAddressField = NULL;
4400 static jfieldID bufferCapacityField = NULL;
4401
4402 static jclass lookupOne(JNIEnv* env, const char* name, TRAPS) {
4403 Handle loader; // null (bootstrap) loader
4404 Handle protection_domain; // null protection domain
4405
4406 TempNewSymbol sym = SymbolTable::new_symbol(name, CHECK_NULL);
4407 jclass result = find_class_from_class_loader(env, sym, true, loader, protection_domain, true, CHECK_NULL);
4408
4409 if (TraceClassResolution && result != NULL) {
4410 trace_class_resolution(java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(result)));
4411 }
4412 return result;
4413 }
4414
4415 // These lookups are done with the NULL (bootstrap) ClassLoader to
4416 // circumvent any security checks that would be done by jni_FindClass.
4417 JNI_ENTRY(bool, lookupDirectBufferClasses(JNIEnv* env))
4418 {
4419 if ((bufferClass = lookupOne(env, "java/nio/Buffer", thread)) == NULL) { return false; }
4420 if ((directBufferClass = lookupOne(env, "sun/nio/ch/DirectBuffer", thread)) == NULL) { return false; }
4421 if ((directByteBufferClass = lookupOne(env, "java/nio/DirectByteBuffer", thread)) == NULL) { return false; }
4422 return true;
4423 }
4424 JNI_END
4425
4426
4427 static bool initializeDirectBufferSupport(JNIEnv* env, JavaThread* thread) {
4428 if (directBufferSupportInitializeFailed) {
4429 return false;
4430 }
4431
4432 if (Atomic::cmpxchg(1, &directBufferSupportInitializeStarted, 0) == 0) {
4433 if (!lookupDirectBufferClasses(env)) {
4434 directBufferSupportInitializeFailed = 1;
4435 return false;
4436 }
4437
4438 // Make global references for these
4439 bufferClass = (jclass) env->NewGlobalRef(bufferClass);
4440 directBufferClass = (jclass) env->NewGlobalRef(directBufferClass);
4441 directByteBufferClass = (jclass) env->NewGlobalRef(directByteBufferClass);
4442
4443 // Get needed field and method IDs
4444 directByteBufferConstructor = env->GetMethodID(directByteBufferClass, "<init>", "(JI)V");
4445 directBufferAddressField = env->GetFieldID(bufferClass, "address", "J");
4446 bufferCapacityField = env->GetFieldID(bufferClass, "capacity", "I");
4447
4448 if ((directByteBufferConstructor == NULL) ||
4449 (directBufferAddressField == NULL) ||
4450 (bufferCapacityField == NULL)) {
4451 directBufferSupportInitializeFailed = 1;
4452 return false;
4453 }
4454
4455 directBufferSupportInitializeEnded = 1;
4456 } else {
4457 while (!directBufferSupportInitializeEnded && !directBufferSupportInitializeFailed) {
4458 // Set state as yield_all can call os:sleep. On Solaris, yield_all calls
4459 // os::sleep which requires the VM state transition. On other platforms, it
4460 // is not necessary. The following call to change the VM state is purposely
4461 // put inside the loop to avoid potential deadlock when multiple threads
4462 // try to call this method. See 6791815 for more details.
4463 ThreadInVMfromNative tivn(thread);
4464 os::yield_all();
4465 }
4466 }
4467
4468 return !directBufferSupportInitializeFailed;
4469 }
4470
4471 extern "C" jobject JNICALL jni_NewDirectByteBuffer(JNIEnv *env, void* address, jlong capacity)
4472 {
4473 // thread_from_jni_environment() will block if VM is gone.
4474 JavaThread* thread = JavaThread::thread_from_jni_environment(env);
4475
4476 JNIWrapper("jni_NewDirectByteBuffer");
4477 #ifndef USDT2
4478 DTRACE_PROBE3(hotspot_jni, NewDirectByteBuffer__entry, env, address, capacity);
4479 #else /* USDT2 */
4480 HOTSPOT_JNI_NEWDIRECTBYTEBUFFER_ENTRY(
4481 env, address, capacity);
4482 #endif /* USDT2 */
4483
4484 if (!directBufferSupportInitializeEnded) {
4485 if (!initializeDirectBufferSupport(env, thread)) {
4486 #ifndef USDT2
4487 DTRACE_PROBE1(hotspot_jni, NewDirectByteBuffer__return, NULL);
4488 #else /* USDT2 */
4489 HOTSPOT_JNI_NEWDIRECTBYTEBUFFER_RETURN(
4490 NULL);
4491 #endif /* USDT2 */
4492 return NULL;
4493 }
4494 }
4495
4496 // Being paranoid about accidental sign extension on address
4497 jlong addr = (jlong) ((uintptr_t) address);
4498 // NOTE that package-private DirectByteBuffer constructor currently
4499 // takes int capacity
4500 jint cap = (jint) capacity;
4501 jobject ret = env->NewObject(directByteBufferClass, directByteBufferConstructor, addr, cap);
4502 #ifndef USDT2
4503 DTRACE_PROBE1(hotspot_jni, NewDirectByteBuffer__return, ret);
4504 #else /* USDT2 */
4505 HOTSPOT_JNI_NEWDIRECTBYTEBUFFER_RETURN(
4506 ret);
4507 #endif /* USDT2 */
4508 return ret;
4509 }
4510
4511 #ifndef USDT2
4512 DT_RETURN_MARK_DECL(GetDirectBufferAddress, void*);
4513 #else /* USDT2 */
4514 DT_RETURN_MARK_DECL(GetDirectBufferAddress, void*
4515 , HOTSPOT_JNI_GETDIRECTBUFFERADDRESS_RETURN((void*) _ret_ref));
4516 #endif /* USDT2 */
4517
4518 extern "C" void* JNICALL jni_GetDirectBufferAddress(JNIEnv *env, jobject buf)
4519 {
4520 // thread_from_jni_environment() will block if VM is gone.
4521 JavaThread* thread = JavaThread::thread_from_jni_environment(env);
4522
4523 JNIWrapper("jni_GetDirectBufferAddress");
4524 #ifndef USDT2
4525 DTRACE_PROBE2(hotspot_jni, GetDirectBufferAddress__entry, env, buf);
4526 #else /* USDT2 */
4527 HOTSPOT_JNI_GETDIRECTBUFFERADDRESS_ENTRY(
4528 env, buf);
4529 #endif /* USDT2 */
4530 void* ret = NULL;
4531 DT_RETURN_MARK(GetDirectBufferAddress, void*, (const void*&)ret);
4532
4533 if (!directBufferSupportInitializeEnded) {
4534 if (!initializeDirectBufferSupport(env, thread)) {
4535 return 0;
4536 }
4537 }
4538
4539 if ((buf != NULL) && (!env->IsInstanceOf(buf, directBufferClass))) {
4540 return 0;
4541 }
4542
4543 ret = (void*)(intptr_t)env->GetLongField(buf, directBufferAddressField);
4544 return ret;
4545 }
4546
4547 #ifndef USDT2
4548 DT_RETURN_MARK_DECL(GetDirectBufferCapacity, jlong);
4549 #else /* USDT2 */
4550 DT_RETURN_MARK_DECL(GetDirectBufferCapacity, jlong
4551 , HOTSPOT_JNI_GETDIRECTBUFFERCAPACITY_RETURN(_ret_ref));
4552 #endif /* USDT2 */
4553
4554 extern "C" jlong JNICALL jni_GetDirectBufferCapacity(JNIEnv *env, jobject buf)
4555 {
4556 // thread_from_jni_environment() will block if VM is gone.
4557 JavaThread* thread = JavaThread::thread_from_jni_environment(env);
4558
4559 JNIWrapper("jni_GetDirectBufferCapacity");
4560 #ifndef USDT2
4561 DTRACE_PROBE2(hotspot_jni, GetDirectBufferCapacity__entry, env, buf);
4562 #else /* USDT2 */
4563 HOTSPOT_JNI_GETDIRECTBUFFERCAPACITY_ENTRY(
4564 env, buf);
4565 #endif /* USDT2 */
4566 jlong ret = -1;
4567 DT_RETURN_MARK(GetDirectBufferCapacity, jlong, (const jlong&)ret);
4568
4569 if (!directBufferSupportInitializeEnded) {
4570 if (!initializeDirectBufferSupport(env, thread)) {
4571 ret = 0;
4572 return ret;
4573 }
4574 }
4575
4576 if (buf == NULL) {
4577 return -1;
4578 }
4579
4580 if (!env->IsInstanceOf(buf, directBufferClass)) {
4581 return -1;
4582 }
4583
4584 // NOTE that capacity is currently an int in the implementation
4585 ret = env->GetIntField(buf, bufferCapacityField);
4586 return ret;
4587 }
4588
4589
4590 JNI_LEAF(jint, jni_GetVersion(JNIEnv *env))
4591 JNIWrapper("GetVersion");
4592 #ifndef USDT2
4593 DTRACE_PROBE1(hotspot_jni, GetVersion__entry, env);
4594 #else /* USDT2 */
4595 HOTSPOT_JNI_GETVERSION_ENTRY(
4596 env);
4597 #endif /* USDT2 */
4598 #ifndef USDT2
4599 DTRACE_PROBE1(hotspot_jni, GetVersion__return, CurrentVersion);
4600 #else /* USDT2 */
4601 HOTSPOT_JNI_GETVERSION_RETURN(
4602 CurrentVersion);
4603 #endif /* USDT2 */
4604 return CurrentVersion;
4605 JNI_END
4606
4607 extern struct JavaVM_ main_vm;
4608
4609 JNI_LEAF(jint, jni_GetJavaVM(JNIEnv *env, JavaVM **vm))
4610 JNIWrapper("jni_GetJavaVM");
4611 #ifndef USDT2
4612 DTRACE_PROBE2(hotspot_jni, GetJavaVM__entry, env, vm);
4613 #else /* USDT2 */
4614 HOTSPOT_JNI_GETJAVAVM_ENTRY(
4615 env, (void **) vm);
4616 #endif /* USDT2 */
4617 *vm = (JavaVM *)(&main_vm);
4618 #ifndef USDT2
4619 DTRACE_PROBE1(hotspot_jni, GetJavaVM__return, JNI_OK);
4620 #else /* USDT2 */
4621 HOTSPOT_JNI_GETJAVAVM_RETURN(
4622 JNI_OK);
4623 #endif /* USDT2 */
4624 return JNI_OK;
4625 JNI_END
4626
4627 // Structure containing all jni functions
4628 struct JNINativeInterface_ jni_NativeInterface = {
4629 NULL,
4630 NULL,
4631 NULL,
4632
4633 NULL,
4634
4635 jni_GetVersion,
4636
4637 jni_DefineClass,
4638 jni_FindClass,
4639
4640 jni_FromReflectedMethod,
4641 jni_FromReflectedField,
4642
4643 jni_ToReflectedMethod,
4644
4645 jni_GetSuperclass,
4646 jni_IsAssignableFrom,
4647
4648 jni_ToReflectedField,
4649
4650 jni_Throw,
4651 jni_ThrowNew,
4652 jni_ExceptionOccurred,
4653 jni_ExceptionDescribe,
4654 jni_ExceptionClear,
4655 jni_FatalError,
4656
4657 jni_PushLocalFrame,
4658 jni_PopLocalFrame,
4659
4660 jni_NewGlobalRef,
4661 jni_DeleteGlobalRef,
4662 jni_DeleteLocalRef,
4663 jni_IsSameObject,
4664
4665 jni_NewLocalRef,
4666 jni_EnsureLocalCapacity,
4667
4668 jni_AllocObject,
4669 jni_NewObject,
4670 jni_NewObjectV,
4671 jni_NewObjectA,
4672
4673 jni_GetObjectClass,
4674 jni_IsInstanceOf,
4675
4676 jni_GetMethodID,
4677
4678 jni_CallObjectMethod,
4679 jni_CallObjectMethodV,
4680 jni_CallObjectMethodA,
4681 jni_CallBooleanMethod,
4682 jni_CallBooleanMethodV,
4683 jni_CallBooleanMethodA,
4684 jni_CallByteMethod,
4685 jni_CallByteMethodV,
4686 jni_CallByteMethodA,
4687 jni_CallCharMethod,
4688 jni_CallCharMethodV,
4689 jni_CallCharMethodA,
4690 jni_CallShortMethod,
4691 jni_CallShortMethodV,
4692 jni_CallShortMethodA,
4693 jni_CallIntMethod,
4694 jni_CallIntMethodV,
4695 jni_CallIntMethodA,
4696 jni_CallLongMethod,
4697 jni_CallLongMethodV,
4698 jni_CallLongMethodA,
4699 jni_CallFloatMethod,
4700 jni_CallFloatMethodV,
4701 jni_CallFloatMethodA,
4702 jni_CallDoubleMethod,
4703 jni_CallDoubleMethodV,
4704 jni_CallDoubleMethodA,
4705 jni_CallVoidMethod,
4706 jni_CallVoidMethodV,
4707 jni_CallVoidMethodA,
4708
4709 jni_CallNonvirtualObjectMethod,
4710 jni_CallNonvirtualObjectMethodV,
4711 jni_CallNonvirtualObjectMethodA,
4712 jni_CallNonvirtualBooleanMethod,
4713 jni_CallNonvirtualBooleanMethodV,
4714 jni_CallNonvirtualBooleanMethodA,
4715 jni_CallNonvirtualByteMethod,
4716 jni_CallNonvirtualByteMethodV,
4717 jni_CallNonvirtualByteMethodA,
4718 jni_CallNonvirtualCharMethod,
4719 jni_CallNonvirtualCharMethodV,
4720 jni_CallNonvirtualCharMethodA,
4721 jni_CallNonvirtualShortMethod,
4722 jni_CallNonvirtualShortMethodV,
4723 jni_CallNonvirtualShortMethodA,
4724 jni_CallNonvirtualIntMethod,
4725 jni_CallNonvirtualIntMethodV,
4726 jni_CallNonvirtualIntMethodA,
4727 jni_CallNonvirtualLongMethod,
4728 jni_CallNonvirtualLongMethodV,
4729 jni_CallNonvirtualLongMethodA,
4730 jni_CallNonvirtualFloatMethod,
4731 jni_CallNonvirtualFloatMethodV,
4732 jni_CallNonvirtualFloatMethodA,
4733 jni_CallNonvirtualDoubleMethod,
4734 jni_CallNonvirtualDoubleMethodV,
4735 jni_CallNonvirtualDoubleMethodA,
4736 jni_CallNonvirtualVoidMethod,
4737 jni_CallNonvirtualVoidMethodV,
4738 jni_CallNonvirtualVoidMethodA,
4739
4740 jni_GetFieldID,
4741
4742 jni_GetObjectField,
4743 jni_GetBooleanField,
4744 jni_GetByteField,
4745 jni_GetCharField,
4746 jni_GetShortField,
4747 jni_GetIntField,
4748 jni_GetLongField,
4749 jni_GetFloatField,
4750 jni_GetDoubleField,
4751
4752 jni_SetObjectField,
4753 jni_SetBooleanField,
4754 jni_SetByteField,
4755 jni_SetCharField,
4756 jni_SetShortField,
4757 jni_SetIntField,
4758 jni_SetLongField,
4759 jni_SetFloatField,
4760 jni_SetDoubleField,
4761
4762 jni_GetStaticMethodID,
4763
4764 jni_CallStaticObjectMethod,
4765 jni_CallStaticObjectMethodV,
4766 jni_CallStaticObjectMethodA,
4767 jni_CallStaticBooleanMethod,
4768 jni_CallStaticBooleanMethodV,
4769 jni_CallStaticBooleanMethodA,
4770 jni_CallStaticByteMethod,
4771 jni_CallStaticByteMethodV,
4772 jni_CallStaticByteMethodA,
4773 jni_CallStaticCharMethod,
4774 jni_CallStaticCharMethodV,
4775 jni_CallStaticCharMethodA,
4776 jni_CallStaticShortMethod,
4777 jni_CallStaticShortMethodV,
4778 jni_CallStaticShortMethodA,
4779 jni_CallStaticIntMethod,
4780 jni_CallStaticIntMethodV,
4781 jni_CallStaticIntMethodA,
4782 jni_CallStaticLongMethod,
4783 jni_CallStaticLongMethodV,
4784 jni_CallStaticLongMethodA,
4785 jni_CallStaticFloatMethod,
4786 jni_CallStaticFloatMethodV,
4787 jni_CallStaticFloatMethodA,
4788 jni_CallStaticDoubleMethod,
4789 jni_CallStaticDoubleMethodV,
4790 jni_CallStaticDoubleMethodA,
4791 jni_CallStaticVoidMethod,
4792 jni_CallStaticVoidMethodV,
4793 jni_CallStaticVoidMethodA,
4794
4795 jni_GetStaticFieldID,
4796
4797 jni_GetStaticObjectField,
4798 jni_GetStaticBooleanField,
4799 jni_GetStaticByteField,
4800 jni_GetStaticCharField,
4801 jni_GetStaticShortField,
4802 jni_GetStaticIntField,
4803 jni_GetStaticLongField,
4804 jni_GetStaticFloatField,
4805 jni_GetStaticDoubleField,
4806
4807 jni_SetStaticObjectField,
4808 jni_SetStaticBooleanField,
4809 jni_SetStaticByteField,
4810 jni_SetStaticCharField,
4811 jni_SetStaticShortField,
4812 jni_SetStaticIntField,
4813 jni_SetStaticLongField,
4814 jni_SetStaticFloatField,
4815 jni_SetStaticDoubleField,
4816
4817 jni_NewString,
4818 jni_GetStringLength,
4819 jni_GetStringChars,
4820 jni_ReleaseStringChars,
4821
4822 jni_NewStringUTF,
4823 jni_GetStringUTFLength,
4824 jni_GetStringUTFChars,
4825 jni_ReleaseStringUTFChars,
4826
4827 jni_GetArrayLength,
4828
4829 jni_NewObjectArray,
4830 jni_GetObjectArrayElement,
4831 jni_SetObjectArrayElement,
4832
4833 jni_NewBooleanArray,
4834 jni_NewByteArray,
4835 jni_NewCharArray,
4836 jni_NewShortArray,
4837 jni_NewIntArray,
4838 jni_NewLongArray,
4839 jni_NewFloatArray,
4840 jni_NewDoubleArray,
4841
4842 jni_GetBooleanArrayElements,
4843 jni_GetByteArrayElements,
4844 jni_GetCharArrayElements,
4845 jni_GetShortArrayElements,
4846 jni_GetIntArrayElements,
4847 jni_GetLongArrayElements,
4848 jni_GetFloatArrayElements,
4849 jni_GetDoubleArrayElements,
4850
4851 jni_ReleaseBooleanArrayElements,
4852 jni_ReleaseByteArrayElements,
4853 jni_ReleaseCharArrayElements,
4854 jni_ReleaseShortArrayElements,
4855 jni_ReleaseIntArrayElements,
4856 jni_ReleaseLongArrayElements,
4857 jni_ReleaseFloatArrayElements,
4858 jni_ReleaseDoubleArrayElements,
4859
4860 jni_GetBooleanArrayRegion,
4861 jni_GetByteArrayRegion,
4862 jni_GetCharArrayRegion,
4863 jni_GetShortArrayRegion,
4864 jni_GetIntArrayRegion,
4865 jni_GetLongArrayRegion,
4866 jni_GetFloatArrayRegion,
4867 jni_GetDoubleArrayRegion,
4868
4869 jni_SetBooleanArrayRegion,
4870 jni_SetByteArrayRegion,
4871 jni_SetCharArrayRegion,
4872 jni_SetShortArrayRegion,
4873 jni_SetIntArrayRegion,
4874 jni_SetLongArrayRegion,
4875 jni_SetFloatArrayRegion,
4876 jni_SetDoubleArrayRegion,
4877
4878 jni_RegisterNatives,
4879 jni_UnregisterNatives,
4880
4881 jni_MonitorEnter,
4882 jni_MonitorExit,
4883
4884 jni_GetJavaVM,
4885
4886 jni_GetStringRegion,
4887 jni_GetStringUTFRegion,
4888
4889 jni_GetPrimitiveArrayCritical,
4890 jni_ReleasePrimitiveArrayCritical,
4891
4892 jni_GetStringCritical,
4893 jni_ReleaseStringCritical,
4894
4895 jni_NewWeakGlobalRef,
4896 jni_DeleteWeakGlobalRef,
4897
4898 jni_ExceptionCheck,
4899
4900 jni_NewDirectByteBuffer,
4901 jni_GetDirectBufferAddress,
4902 jni_GetDirectBufferCapacity,
4903
4904 // New 1_6 features
4905
4906 jni_GetObjectRefType
4907 };
4908
4909
4910 // For jvmti use to modify jni function table.
4911 // Java threads in native contiues to run until it is transitioned
4912 // to VM at safepoint. Before the transition or before it is blocked
4913 // for safepoint it may access jni function table. VM could crash if
4914 // any java thread access the jni function table in the middle of memcpy.
4915 // To avoid this each function pointers are copied automically.
4916 void copy_jni_function_table(const struct JNINativeInterface_ *new_jni_NativeInterface) {
4917 assert(SafepointSynchronize::is_at_safepoint(), "must be at safepoint");
4918 intptr_t *a = (intptr_t *) jni_functions();
4919 intptr_t *b = (intptr_t *) new_jni_NativeInterface;
4920 for (uint i=0; i < sizeof(struct JNINativeInterface_)/sizeof(void *); i++) {
4921 Atomic::store_ptr(*b++, a++);
4922 }
4923 }
4924
4925 void quicken_jni_functions() {
4926 // Replace Get<Primitive>Field with fast versions
4927 if (UseFastJNIAccessors && !JvmtiExport::can_post_field_access()
4928 && !VerifyJNIFields && !TraceJNICalls && !CountJNICalls && !CheckJNICalls
4929 #if defined(_WINDOWS) && defined(IA32) && defined(COMPILER2)
4930 // windows x86 currently needs SEH wrapper and the gain of the fast
4931 // versions currently isn't certain for server vm on uniprocessor.
4932 && os::is_MP()
4933 #endif
4934 ) {
4935 address func;
4936 func = JNI_FastGetField::generate_fast_get_boolean_field();
4937 if (func != (address)-1) {
4938 jni_NativeInterface.GetBooleanField = (GetBooleanField_t)func;
4939 }
4940 func = JNI_FastGetField::generate_fast_get_byte_field();
4941 if (func != (address)-1) {
4942 jni_NativeInterface.GetByteField = (GetByteField_t)func;
4943 }
4944 func = JNI_FastGetField::generate_fast_get_char_field();
4945 if (func != (address)-1) {
4946 jni_NativeInterface.GetCharField = (GetCharField_t)func;
4947 }
4948 func = JNI_FastGetField::generate_fast_get_short_field();
4949 if (func != (address)-1) {
4950 jni_NativeInterface.GetShortField = (GetShortField_t)func;
4951 }
4952 func = JNI_FastGetField::generate_fast_get_int_field();
4953 if (func != (address)-1) {
4954 jni_NativeInterface.GetIntField = (GetIntField_t)func;
4955 }
4956 func = JNI_FastGetField::generate_fast_get_long_field();
4957 if (func != (address)-1) {
4958 jni_NativeInterface.GetLongField = (GetLongField_t)func;
4959 }
4960 func = JNI_FastGetField::generate_fast_get_float_field();
4961 if (func != (address)-1) {
4962 jni_NativeInterface.GetFloatField = (GetFloatField_t)func;
4963 }
4964 func = JNI_FastGetField::generate_fast_get_double_field();
4965 if (func != (address)-1) {
4966 jni_NativeInterface.GetDoubleField = (GetDoubleField_t)func;
4967 }
4968 }
4969 }
4970
4971 // Returns the function structure
4972 struct JNINativeInterface_* jni_functions() {
4973 #ifndef JNICHECK_KERNEL
4974 if (CheckJNICalls) return jni_functions_check();
4975 #else // JNICHECK_KERNEL
4976 if (CheckJNICalls) warning("-Xcheck:jni is not supported in kernel vm.");
4977 #endif // JNICHECK_KERNEL
4978 return &jni_NativeInterface;
4979 }
4980
4981 // Returns the function structure
4982 struct JNINativeInterface_* jni_functions_nocheck() {
4983 return &jni_NativeInterface;
4984 }
4985
4986
4987 // Invocation API
4988
4989
4990 // Forward declaration
4991 extern const struct JNIInvokeInterface_ jni_InvokeInterface;
4992
4993 // Global invocation API vars
4994 volatile jint vm_created = 0;
4995 // Indicate whether it is safe to recreate VM
4996 volatile jint safe_to_recreate_vm = 1;
4997 struct JavaVM_ main_vm = {&jni_InvokeInterface};
4998
4999
5000 #define JAVASTACKSIZE (400 * 1024) /* Default size of a thread java stack */
5001 enum { VERIFY_NONE, VERIFY_REMOTE, VERIFY_ALL };
5002
5003 #ifndef USDT2
5004 HS_DTRACE_PROBE_DECL1(hotspot_jni, GetDefaultJavaVMInitArgs__entry, void*);
5005 DT_RETURN_MARK_DECL(GetDefaultJavaVMInitArgs, jint);
5006 #else /* USDT2 */
5007 DT_RETURN_MARK_DECL(GetDefaultJavaVMInitArgs, jint
5008 , HOTSPOT_JNI_GETDEFAULTJAVAVMINITARGS_RETURN(_ret_ref));
5009 #endif /* USDT2 */
5010
5011 _JNI_IMPORT_OR_EXPORT_ jint JNICALL JNI_GetDefaultJavaVMInitArgs(void *args_) {
5012 #ifndef USDT2
5013 HS_DTRACE_PROBE1(hotspot_jni, GetDefaultJavaVMInitArgs__entry, args_);
5014 #else /* USDT2 */
5015 HOTSPOT_JNI_GETDEFAULTJAVAVMINITARGS_ENTRY(
5016 args_);
5017 #endif /* USDT2 */
5018 JDK1_1InitArgs *args = (JDK1_1InitArgs *)args_;
5019 jint ret = JNI_ERR;
5020 DT_RETURN_MARK(GetDefaultJavaVMInitArgs, jint, (const jint&)ret);
5021
5022 if (Threads::is_supported_jni_version(args->version)) {
5023 ret = JNI_OK;
5024 }
5025 // 1.1 style no longer supported in hotspot.
5026 // According the JNI spec, we should update args->version on return.
5027 // We also use the structure to communicate with launcher about default
5028 // stack size.
5029 if (args->version == JNI_VERSION_1_1) {
5030 args->version = JNI_VERSION_1_2;
5031 // javaStackSize is int in arguments structure
5032 assert(jlong(ThreadStackSize) * K < INT_MAX, "integer overflow");
5033 args->javaStackSize = (jint)(ThreadStackSize * K);
5034 }
5035 return ret;
5036 }
5037
5038 #ifndef PRODUCT
5039
5040 #include "utilities/quickSort.hpp"
5041
5042 void execute_internal_vm_tests() {
5043 if (ExecuteInternalVMTests) {
5044 assert(QuickSort::test_quick_sort(), "test_quick_sort failed");
5045 tty->print_cr("All tests passed");
5046 }
5047 }
5048
5049 #endif
5050
5051 #ifndef USDT2
5052 HS_DTRACE_PROBE_DECL3(hotspot_jni, CreateJavaVM__entry, vm, penv, args);
5053 DT_RETURN_MARK_DECL(CreateJavaVM, jint);
5054 #else /* USDT2 */
5055 DT_RETURN_MARK_DECL(CreateJavaVM, jint
5056 , HOTSPOT_JNI_CREATEJAVAVM_RETURN(_ret_ref));
5057 #endif /* USDT2 */
5058
5059 _JNI_IMPORT_OR_EXPORT_ jint JNICALL JNI_CreateJavaVM(JavaVM **vm, void **penv, void *args) {
5060 #ifndef USDT2
5061 HS_DTRACE_PROBE3(hotspot_jni, CreateJavaVM__entry, vm, penv, args);
5062 #else /* USDT2 */
5063 HOTSPOT_JNI_CREATEJAVAVM_ENTRY(
5064 (void **) vm, penv, args);
5065 #endif /* USDT2 */
5066
5067 jint result = JNI_ERR;
5068 DT_RETURN_MARK(CreateJavaVM, jint, (const jint&)result);
5069
5070 // We're about to use Atomic::xchg for synchronization. Some Zero
5071 // platforms use the GCC builtin __sync_lock_test_and_set for this,
5072 // but __sync_lock_test_and_set is not guaranteed to do what we want
5073 // on all architectures. So we check it works before relying on it.
5074 #if defined(ZERO) && defined(ASSERT)
5075 {
5076 jint a = 0xcafebabe;
5077 jint b = Atomic::xchg(0xdeadbeef, &a);
5078 void *c = &a;
5079 void *d = Atomic::xchg_ptr(&b, &c);
5080 assert(a == (jint) 0xdeadbeef && b == (jint) 0xcafebabe, "Atomic::xchg() works");
5081 assert(c == &b && d == &a, "Atomic::xchg_ptr() works");
5082 }
5083 #endif // ZERO && ASSERT
5084
5085 // At the moment it's only possible to have one Java VM,
5086 // since some of the runtime state is in global variables.
5087
5088 // We cannot use our mutex locks here, since they only work on
5089 // Threads. We do an atomic compare and exchange to ensure only
5090 // one thread can call this method at a time
5091
5092 // We use Atomic::xchg rather than Atomic::add/dec since on some platforms
5093 // the add/dec implementations are dependent on whether we are running
5094 // on a multiprocessor, and at this stage of initialization the os::is_MP
5095 // function used to determine this will always return false. Atomic::xchg
5096 // does not have this problem.
5097 if (Atomic::xchg(1, &vm_created) == 1) {
5098 return JNI_ERR; // already created, or create attempt in progress
5099 }
5100 if (Atomic::xchg(0, &safe_to_recreate_vm) == 0) {
5101 return JNI_ERR; // someone tried and failed and retry not allowed.
5102 }
5103
5104 assert(vm_created == 1, "vm_created is true during the creation");
5105
5106 /**
5107 * Certain errors during initialization are recoverable and do not
5108 * prevent this method from being called again at a later time
5109 * (perhaps with different arguments). However, at a certain
5110 * point during initialization if an error occurs we cannot allow
5111 * this function to be called again (or it will crash). In those
5112 * situations, the 'canTryAgain' flag is set to false, which atomically
5113 * sets safe_to_recreate_vm to 1, such that any new call to
5114 * JNI_CreateJavaVM will immediately fail using the above logic.
5115 */
5116 bool can_try_again = true;
5117
5118 result = Threads::create_vm((JavaVMInitArgs*) args, &can_try_again);
5119 if (result == JNI_OK) {
5120 JavaThread *thread = JavaThread::current();
5121 /* thread is thread_in_vm here */
5122 *vm = (JavaVM *)(&main_vm);
5123 *(JNIEnv**)penv = thread->jni_environment();
5124
5125 // Tracks the time application was running before GC
5126 RuntimeService::record_application_start();
5127
5128 // Notify JVMTI
5129 if (JvmtiExport::should_post_thread_life()) {
5130 JvmtiExport::post_thread_start(thread);
5131 }
5132 // Check if we should compile all classes on bootclasspath
5133 NOT_PRODUCT(if (CompileTheWorld) ClassLoader::compile_the_world();)
5134 // Since this is not a JVM_ENTRY we have to set the thread state manually before leaving.
5135 ThreadStateTransition::transition_and_fence(thread, _thread_in_vm, _thread_in_native);
5136 } else {
5137 if (can_try_again) {
5138 // reset safe_to_recreate_vm to 1 so that retrial would be possible
5139 safe_to_recreate_vm = 1;
5140 }
5141
5142 // Creation failed. We must reset vm_created
5143 *vm = 0;
5144 *(JNIEnv**)penv = 0;
5145 // reset vm_created last to avoid race condition. Use OrderAccess to
5146 // control both compiler and architectural-based reordering.
5147 OrderAccess::release_store(&vm_created, 0);
5148 }
5149
5150 NOT_PRODUCT(test_error_handler(ErrorHandlerTest));
5151 NOT_PRODUCT(execute_internal_vm_tests());
5152 return result;
5153 }
5154
5155 #ifndef USDT2
5156 HS_DTRACE_PROBE_DECL3(hotspot_jni, GetCreatedJavaVMs__entry, \
5157 JavaVM**, jsize, jsize*);
5158 HS_DTRACE_PROBE_DECL1(hotspot_jni, GetCreatedJavaVMs__return, jint);
5159 #endif /* !USDT2 */
5160
5161 _JNI_IMPORT_OR_EXPORT_ jint JNICALL JNI_GetCreatedJavaVMs(JavaVM **vm_buf, jsize bufLen, jsize *numVMs) {
5162 // See bug 4367188, the wrapper can sometimes cause VM crashes
5163 // JNIWrapper("GetCreatedJavaVMs");
5164 #ifndef USDT2
5165 HS_DTRACE_PROBE3(hotspot_jni, GetCreatedJavaVMs__entry, \
5166 vm_buf, bufLen, numVMs);
5167 #else /* USDT2 */
5168 HOTSPOT_JNI_GETCREATEDJAVAVMS_ENTRY(
5169 (void **) vm_buf, bufLen, (uintptr_t *) numVMs);
5170 #endif /* USDT2 */
5171 if (vm_created) {
5172 if (numVMs != NULL) *numVMs = 1;
5173 if (bufLen > 0) *vm_buf = (JavaVM *)(&main_vm);
5174 } else {
5175 if (numVMs != NULL) *numVMs = 0;
5176 }
5177 #ifndef USDT2
5178 HS_DTRACE_PROBE1(hotspot_jni, GetCreatedJavaVMs__return, JNI_OK);
5179 #else /* USDT2 */
5180 HOTSPOT_JNI_GETCREATEDJAVAVMS_RETURN(
5181 JNI_OK);
5182 #endif /* USDT2 */
5183 return JNI_OK;
5184 }
5185
5186 extern "C" {
5187
5188 #ifndef USDT2
5189 DT_RETURN_MARK_DECL(DestroyJavaVM, jint);
5190 #else /* USDT2 */
5191 DT_RETURN_MARK_DECL(DestroyJavaVM, jint
5192 , HOTSPOT_JNI_DESTROYJAVAVM_RETURN(_ret_ref));
5193 #endif /* USDT2 */
5194
5195 jint JNICALL jni_DestroyJavaVM(JavaVM *vm) {
5196 #ifndef USDT2
5197 DTRACE_PROBE1(hotspot_jni, DestroyJavaVM__entry, vm);
5198 #else /* USDT2 */
5199 HOTSPOT_JNI_DESTROYJAVAVM_ENTRY(
5200 vm);
5201 #endif /* USDT2 */
5202 jint res = JNI_ERR;
5203 DT_RETURN_MARK(DestroyJavaVM, jint, (const jint&)res);
5204
5205 if (!vm_created) {
5206 res = JNI_ERR;
5207 return res;
5208 }
5209
5210 JNIWrapper("DestroyJavaVM");
5211 JNIEnv *env;
5212 JavaVMAttachArgs destroyargs;
5213 destroyargs.version = CurrentVersion;
5214 destroyargs.name = (char *)"DestroyJavaVM";
5215 destroyargs.group = NULL;
5216 res = vm->AttachCurrentThread((void **)&env, (void *)&destroyargs);
5217 if (res != JNI_OK) {
5218 return res;
5219 }
5220
5221 // Since this is not a JVM_ENTRY we have to set the thread state manually before entering.
5222 JavaThread* thread = JavaThread::current();
5223 ThreadStateTransition::transition_from_native(thread, _thread_in_vm);
5224 if (Threads::destroy_vm()) {
5225 // Should not change thread state, VM is gone
5226 vm_created = false;
5227 res = JNI_OK;
5228 return res;
5229 } else {
5230 ThreadStateTransition::transition_and_fence(thread, _thread_in_vm, _thread_in_native);
5231 res = JNI_ERR;
5232 return res;
5233 }
5234 }
5235
5236
5237 static jint attach_current_thread(JavaVM *vm, void **penv, void *_args, bool daemon) {
5238 JavaVMAttachArgs *args = (JavaVMAttachArgs *) _args;
5239
5240 // Check below commented out from JDK1.2fcs as well
5241 /*
5242 if (args && (args->version != JNI_VERSION_1_1 || args->version != JNI_VERSION_1_2)) {
5243 return JNI_EVERSION;
5244 }
5245 */
5246
5247 Thread* t = ThreadLocalStorage::get_thread_slow();
5248 if (t != NULL) {
5249 // If the thread has been attached this operation is a no-op
5250 *(JNIEnv**)penv = ((JavaThread*) t)->jni_environment();
5251 return JNI_OK;
5252 }
5253
5254 // Create a thread and mark it as attaching so it will be skipped by the
5255 // ThreadsListEnumerator - see CR 6404306
5256 JavaThread* thread = new JavaThread(true);
5257
5258 // Set correct safepoint info. The thread is going to call into Java when
5259 // initializing the Java level thread object. Hence, the correct state must
5260 // be set in order for the Safepoint code to deal with it correctly.
5261 thread->set_thread_state(_thread_in_vm);
5262 // Must do this before initialize_thread_local_storage
5263 thread->record_stack_base_and_size();
5264
5265 thread->initialize_thread_local_storage();
5266
5267 if (!os::create_attached_thread(thread)) {
5268 delete thread;
5269 return JNI_ERR;
5270 }
5271 // Enable stack overflow checks
5272 thread->create_stack_guard_pages();
5273
5274 thread->initialize_tlab();
5275
5276 thread->cache_global_variables();
5277
5278 // Crucial that we do not have a safepoint check for this thread, since it has
5279 // not been added to the Thread list yet.
5280 { Threads_lock->lock_without_safepoint_check();
5281 // This must be inside this lock in order to get FullGCALot to work properly, i.e., to
5282 // avoid this thread trying to do a GC before it is added to the thread-list
5283 thread->set_active_handles(JNIHandleBlock::allocate_block());
5284 Threads::add(thread, daemon);
5285 Threads_lock->unlock();
5286 }
5287 // Create thread group and name info from attach arguments
5288 oop group = NULL;
5289 char* thread_name = NULL;
5290 if (args != NULL && Threads::is_supported_jni_version(args->version)) {
5291 group = JNIHandles::resolve(args->group);
5292 thread_name = args->name; // may be NULL
5293 }
5294 if (group == NULL) group = Universe::main_thread_group();
5295
5296 // Create Java level thread object and attach it to this thread
5297 bool attach_failed = false;
5298 {
5299 EXCEPTION_MARK;
5300 HandleMark hm(THREAD);
5301 Handle thread_group(THREAD, group);
5302 thread->allocate_threadObj(thread_group, thread_name, daemon, THREAD);
5303 if (HAS_PENDING_EXCEPTION) {
5304 CLEAR_PENDING_EXCEPTION;
5305 // cleanup outside the handle mark.
5306 attach_failed = true;
5307 }
5308 }
5309
5310 if (attach_failed) {
5311 // Added missing cleanup
5312 thread->cleanup_failed_attach_current_thread();
5313 return JNI_ERR;
5314 }
5315
5316 // mark the thread as no longer attaching
5317 // this uses a fence to push the change through so we don't have
5318 // to regrab the threads_lock
5319 thread->set_done_attaching_via_jni();
5320
5321 // Set java thread status.
5322 java_lang_Thread::set_thread_status(thread->threadObj(),
5323 java_lang_Thread::RUNNABLE);
5324
5325 // Notify the debugger
5326 if (JvmtiExport::should_post_thread_life()) {
5327 JvmtiExport::post_thread_start(thread);
5328 }
5329
5330 *(JNIEnv**)penv = thread->jni_environment();
5331
5332 // Now leaving the VM, so change thread_state. This is normally automatically taken care
5333 // of in the JVM_ENTRY. But in this situation we have to do it manually. Notice, that by
5334 // using ThreadStateTransition::transition, we do a callback to the safepoint code if
5335 // needed.
5336
5337 ThreadStateTransition::transition_and_fence(thread, _thread_in_vm, _thread_in_native);
5338
5339 // Perform any platform dependent FPU setup
5340 os::setup_fpu();
5341
5342 return JNI_OK;
5343 }
5344
5345
5346 jint JNICALL jni_AttachCurrentThread(JavaVM *vm, void **penv, void *_args) {
5347 #ifndef USDT2
5348 DTRACE_PROBE3(hotspot_jni, AttachCurrentThread__entry, vm, penv, _args);
5349 #else /* USDT2 */
5350 HOTSPOT_JNI_ATTACHCURRENTTHREAD_ENTRY(
5351 vm, penv, _args);
5352 #endif /* USDT2 */
5353 if (!vm_created) {
5354 #ifndef USDT2
5355 DTRACE_PROBE1(hotspot_jni, AttachCurrentThread__return, JNI_ERR);
5356 #else /* USDT2 */
5357 HOTSPOT_JNI_ATTACHCURRENTTHREAD_RETURN(
5358 (uint32_t) JNI_ERR);
5359 #endif /* USDT2 */
5360 return JNI_ERR;
5361 }
5362
5363 JNIWrapper("AttachCurrentThread");
5364 jint ret = attach_current_thread(vm, penv, _args, false);
5365 #ifndef USDT2
5366 DTRACE_PROBE1(hotspot_jni, AttachCurrentThread__return, ret);
5367 #else /* USDT2 */
5368 HOTSPOT_JNI_ATTACHCURRENTTHREAD_RETURN(
5369 ret);
5370 #endif /* USDT2 */
5371 return ret;
5372 }
5373
5374
5375 jint JNICALL jni_DetachCurrentThread(JavaVM *vm) {
5376 #ifndef USDT2
5377 DTRACE_PROBE1(hotspot_jni, DetachCurrentThread__entry, vm);
5378 #else /* USDT2 */
5379 HOTSPOT_JNI_DETACHCURRENTTHREAD_ENTRY(
5380 vm);
5381 #endif /* USDT2 */
5382 VM_Exit::block_if_vm_exited();
5383
5384 JNIWrapper("DetachCurrentThread");
5385
5386 // If the thread has been deattacted the operations is a no-op
5387 if (ThreadLocalStorage::thread() == NULL) {
5388 #ifndef USDT2
5389 DTRACE_PROBE1(hotspot_jni, DetachCurrentThread__return, JNI_OK);
5390 #else /* USDT2 */
5391 HOTSPOT_JNI_DETACHCURRENTTHREAD_RETURN(
5392 JNI_OK);
5393 #endif /* USDT2 */
5394 return JNI_OK;
5395 }
5396
5397 JavaThread* thread = JavaThread::current();
5398 if (thread->has_last_Java_frame()) {
5399 #ifndef USDT2
5400 DTRACE_PROBE1(hotspot_jni, DetachCurrentThread__return, JNI_ERR);
5401 #else /* USDT2 */
5402 HOTSPOT_JNI_DETACHCURRENTTHREAD_RETURN(
5403 (uint32_t) JNI_ERR);
5404 #endif /* USDT2 */
5405 // Can't detach a thread that's running java, that can't work.
5406 return JNI_ERR;
5407 }
5408
5409 // Safepoint support. Have to do call-back to safepoint code, if in the
5410 // middel of a safepoint operation
5411 ThreadStateTransition::transition_from_native(thread, _thread_in_vm);
5412
5413 // XXX: Note that JavaThread::exit() call below removes the guards on the
5414 // stack pages set up via enable_stack_{red,yellow}_zone() calls
5415 // above in jni_AttachCurrentThread. Unfortunately, while the setting
5416 // of the guards is visible in jni_AttachCurrentThread above,
5417 // the removal of the guards is buried below in JavaThread::exit()
5418 // here. The abstraction should be more symmetrically either exposed
5419 // or hidden (e.g. it could probably be hidden in the same
5420 // (platform-dependent) methods where we do alternate stack
5421 // maintenance work?)
5422 thread->exit(false, JavaThread::jni_detach);
5423 delete thread;
5424
5425 #ifndef USDT2
5426 DTRACE_PROBE1(hotspot_jni, DetachCurrentThread__return, JNI_OK);
5427 #else /* USDT2 */
5428 HOTSPOT_JNI_DETACHCURRENTTHREAD_RETURN(
5429 JNI_OK);
5430 #endif /* USDT2 */
5431 return JNI_OK;
5432 }
5433
5434 #ifndef USDT2
5435 DT_RETURN_MARK_DECL(GetEnv, jint);
5436 #else /* USDT2 */
5437 DT_RETURN_MARK_DECL(GetEnv, jint
5438 , HOTSPOT_JNI_GETENV_RETURN(_ret_ref));
5439 #endif /* USDT2 */
5440
5441 jint JNICALL jni_GetEnv(JavaVM *vm, void **penv, jint version) {
5442 #ifndef USDT2
5443 DTRACE_PROBE3(hotspot_jni, GetEnv__entry, vm, penv, version);
5444 #else /* USDT2 */
5445 HOTSPOT_JNI_GETENV_ENTRY(
5446 vm, penv, version);
5447 #endif /* USDT2 */
5448 jint ret = JNI_ERR;
5449 DT_RETURN_MARK(GetEnv, jint, (const jint&)ret);
5450
5451 if (!vm_created) {
5452 *penv = NULL;
5453 ret = JNI_EDETACHED;
5454 return ret;
5455 }
5456
5457 if (JvmtiExport::is_jvmti_version(version)) {
5458 ret = JvmtiExport::get_jvmti_interface(vm, penv, version);
5459 return ret;
5460 }
5461
5462 #ifndef JVMPI_VERSION_1
5463 // need these in order to be polite about older agents
5464 #define JVMPI_VERSION_1 ((jint)0x10000001)
5465 #define JVMPI_VERSION_1_1 ((jint)0x10000002)
5466 #define JVMPI_VERSION_1_2 ((jint)0x10000003)
5467 #endif // !JVMPI_VERSION_1
5468
5469 Thread* thread = ThreadLocalStorage::thread();
5470 if (thread != NULL && thread->is_Java_thread()) {
5471 if (Threads::is_supported_jni_version_including_1_1(version)) {
5472 *(JNIEnv**)penv = ((JavaThread*) thread)->jni_environment();
5473 ret = JNI_OK;
5474 return ret;
5475
5476 } else if (version == JVMPI_VERSION_1 ||
5477 version == JVMPI_VERSION_1_1 ||
5478 version == JVMPI_VERSION_1_2) {
5479 tty->print_cr("ERROR: JVMPI, an experimental interface, is no longer supported.");
5480 tty->print_cr("Please use the supported interface: the JVM Tool Interface (JVM TI).");
5481 ret = JNI_EVERSION;
5482 return ret;
5483 } else if (JvmtiExport::is_jvmdi_version(version)) {
5484 tty->print_cr("FATAL ERROR: JVMDI is no longer supported.");
5485 tty->print_cr("Please use the supported interface: the JVM Tool Interface (JVM TI).");
5486 ret = JNI_EVERSION;
5487 return ret;
5488 } else {
5489 *penv = NULL;
5490 ret = JNI_EVERSION;
5491 return ret;
5492 }
5493 } else {
5494 *penv = NULL;
5495 ret = JNI_EDETACHED;
5496 return ret;
5497 }
5498 }
5499
5500
5501 jint JNICALL jni_AttachCurrentThreadAsDaemon(JavaVM *vm, void **penv, void *_args) {
5502 #ifndef USDT2
5503 DTRACE_PROBE3(hotspot_jni, AttachCurrentThreadAsDaemon__entry, vm, penv, _args);
5504 #else /* USDT2 */
5505 HOTSPOT_JNI_ATTACHCURRENTTHREADASDAEMON_ENTRY(
5506 vm, penv, _args);
5507 #endif /* USDT2 */
5508 if (!vm_created) {
5509 #ifndef USDT2
5510 DTRACE_PROBE1(hotspot_jni, AttachCurrentThreadAsDaemon__return, JNI_ERR);
5511 #else /* USDT2 */
5512 HOTSPOT_JNI_ATTACHCURRENTTHREADASDAEMON_RETURN(
5513 (uint32_t) JNI_ERR);
5514 #endif /* USDT2 */
5515 return JNI_ERR;
5516 }
5517
5518 JNIWrapper("AttachCurrentThreadAsDaemon");
5519 jint ret = attach_current_thread(vm, penv, _args, true);
5520 #ifndef USDT2
5521 DTRACE_PROBE1(hotspot_jni, AttachCurrentThreadAsDaemon__return, ret);
5522 #else /* USDT2 */
5523 HOTSPOT_JNI_ATTACHCURRENTTHREADASDAEMON_RETURN(
5524 ret);
5525 #endif /* USDT2 */
5526 return ret;
5527 }
5528
5529
5530 } // End extern "C"
5531
5532 const struct JNIInvokeInterface_ jni_InvokeInterface = {
5533 NULL,
5534 NULL,
5535 NULL,
5536
5537 jni_DestroyJavaVM,
5538 jni_AttachCurrentThread,
5539 jni_DetachCurrentThread,
5540 jni_GetEnv,
5541 jni_AttachCurrentThreadAsDaemon
5542 };