1 /*
2 * Copyright (c) 1997, 2012, Oracle and/or its affiliates. All rights reserved.
3 * Copyright (c) 2012 Red Hat, Inc.
4 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
5 *
6 * This code is free software; you can redistribute it and/or modify it
7 * under the terms of the GNU General Public License version 2 only, as
8 * published by the Free Software Foundation.
9 *
10 * This code is distributed in the hope that it will be useful, but WITHOUT
11 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
12 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
13 * version 2 for more details (a copy is included in the LICENSE file that
14 * accompanied this code).
15 *
16 * You should have received a copy of the GNU General Public License version
17 * 2 along with this work; if not, write to the Free Software Foundation,
18 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
19 *
20 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
21 * or visit www.oracle.com if you need additional information or have any
22 * questions.
23 *
24 */
25
26 #include "precompiled.hpp"
27 #include "classfile/altHashing.hpp"
28 #include "classfile/classLoader.hpp"
29 #include "classfile/javaClasses.hpp"
30 #include "classfile/symbolTable.hpp"
31 #include "classfile/systemDictionary.hpp"
32 #include "classfile/vmSymbols.hpp"
33 #include "interpreter/linkResolver.hpp"
34 #ifndef SERIALGC
35 #include "gc_implementation/g1/g1SATBCardTableModRefBS.hpp"
36 #endif // SERIALGC
37 #include "memory/allocation.hpp"
38 #include "memory/allocation.inline.hpp"
39 #include "memory/gcLocker.inline.hpp"
40 #include "memory/oopFactory.hpp"
41 #include "memory/universe.inline.hpp"
42 #include "oops/instanceKlass.hpp"
43 #include "oops/instanceOop.hpp"
44 #include "oops/markOop.hpp"
45 #include "oops/method.hpp"
46 #include "oops/objArrayKlass.hpp"
47 #include "oops/objArrayOop.hpp"
48 #include "oops/oop.inline.hpp"
49 #include "oops/symbol.hpp"
50 #include "oops/typeArrayKlass.hpp"
51 #include "oops/typeArrayOop.hpp"
52 #include "prims/jni.h"
53 #include "prims/jniCheck.hpp"
54 #include "prims/jniExport.hpp"
55 #include "prims/jniFastGetField.hpp"
56 #include "prims/jvm.h"
57 #include "prims/jvm_misc.hpp"
58 #include "prims/jvmtiExport.hpp"
59 #include "prims/jvmtiThreadState.hpp"
60 #include "runtime/compilationPolicy.hpp"
61 #include "runtime/fieldDescriptor.hpp"
62 #include "runtime/fprofiler.hpp"
63 #include "runtime/handles.inline.hpp"
64 #include "runtime/interfaceSupport.hpp"
65 #include "runtime/java.hpp"
66 #include "runtime/javaCalls.hpp"
67 #include "runtime/jfieldIDWorkaround.hpp"
68 #include "runtime/reflection.hpp"
69 #include "runtime/sharedRuntime.hpp"
70 #include "runtime/signature.hpp"
71 #include "runtime/vm_operations.hpp"
72 #include "services/runtimeService.hpp"
73 #include "trace/tracing.hpp"
74 #include "trace/traceEventTypes.hpp"
75 #include "utilities/defaultStream.hpp"
76 #include "utilities/dtrace.hpp"
77 #include "utilities/events.hpp"
78 #include "utilities/histogram.hpp"
79 #ifdef TARGET_OS_FAMILY_linux
80 # include "os_linux.inline.hpp"
81 # include "thread_linux.inline.hpp"
82 #endif
83 #ifdef TARGET_OS_FAMILY_solaris
84 # include "os_solaris.inline.hpp"
85 # include "thread_solaris.inline.hpp"
86 #endif
87 #ifdef TARGET_OS_FAMILY_windows
88 # include "os_windows.inline.hpp"
89 # include "thread_windows.inline.hpp"
90 #endif
91 #ifdef TARGET_OS_FAMILY_bsd
92 # include "os_bsd.inline.hpp"
93 # include "thread_bsd.inline.hpp"
94 #endif
95
96 static jint CurrentVersion = JNI_VERSION_1_6;
97
98
99 // The DT_RETURN_MARK macros create a scoped object to fire the dtrace
100 // '-return' probe regardless of the return path is taken out of the function.
101 // Methods that have multiple return paths use this to avoid having to
102 // instrument each return path. Methods that use CHECK or THROW must use this
103 // since those macros can cause an immedate uninstrumented return.
104 //
105 // In order to get the return value, a reference to the variable containing
106 // the return value must be passed to the contructor of the object, and
107 // the return value must be set before return (since the mark object has
108 // a reference to it).
109 //
110 // Example:
111 // DT_RETURN_MARK_DECL(SomeFunc, int);
112 // JNI_ENTRY(int, SomeFunc, ...)
113 // int return_value = 0;
114 // DT_RETURN_MARK(SomeFunc, int, (const int&)return_value);
115 // foo(CHECK_0)
116 // return_value = 5;
117 // return return_value;
118 // JNI_END
119 #ifndef USDT2
120 #define DT_RETURN_MARK_DECL(name, type) \
121 HS_DTRACE_PROBE_DECL1(hotspot_jni, name##__return, type); \
122 DTRACE_ONLY( \
123 class DTraceReturnProbeMark_##name { \
124 public: \
125 const type& _ret_ref; \
126 DTraceReturnProbeMark_##name(const type& v) : _ret_ref(v) {} \
127 ~DTraceReturnProbeMark_##name() { \
128 HS_DTRACE_PROBE1(hotspot_jni, name##__return, _ret_ref); \
129 } \
130 } \
131 )
132 // Void functions are simpler since there's no return value
133 #define DT_VOID_RETURN_MARK_DECL(name) \
134 HS_DTRACE_PROBE_DECL0(hotspot_jni, name##__return); \
135 DTRACE_ONLY( \
136 class DTraceReturnProbeMark_##name { \
137 public: \
138 ~DTraceReturnProbeMark_##name() { \
139 HS_DTRACE_PROBE0(hotspot_jni, name##__return); \
140 } \
141 } \
142 )
143
144 #else /* USDT2 */
145
146 #define DT_RETURN_MARK_DECL(name, type, probe) \
147 DTRACE_ONLY( \
148 class DTraceReturnProbeMark_##name { \
149 public: \
150 const type& _ret_ref; \
151 DTraceReturnProbeMark_##name(const type& v) : _ret_ref(v) {} \
152 ~DTraceReturnProbeMark_##name() { \
153 probe; \
154 } \
155 } \
156 )
157 // Void functions are simpler since there's no return value
158 #define DT_VOID_RETURN_MARK_DECL(name, probe) \
159 DTRACE_ONLY( \
160 class DTraceReturnProbeMark_##name { \
161 public: \
162 ~DTraceReturnProbeMark_##name() { \
163 probe; \
164 } \
165 } \
166 )
167 #endif /* USDT2 */
168
169 // Place these macros in the function to mark the return. Non-void
170 // functions need the type and address of the return value.
171 #define DT_RETURN_MARK(name, type, ref) \
172 DTRACE_ONLY( DTraceReturnProbeMark_##name dtrace_return_mark(ref) )
173 #define DT_VOID_RETURN_MARK(name) \
174 DTRACE_ONLY( DTraceReturnProbeMark_##name dtrace_return_mark )
175
176
177 // Use these to select distinct code for floating-point vs. non-floating point
178 // situations. Used from within common macros where we need slightly
179 // different behavior for Float/Double
180 #define FP_SELECT_Boolean(intcode, fpcode) intcode
181 #define FP_SELECT_Byte(intcode, fpcode) intcode
182 #define FP_SELECT_Char(intcode, fpcode) intcode
183 #define FP_SELECT_Short(intcode, fpcode) intcode
184 #define FP_SELECT_Object(intcode, fpcode) intcode
185 #define FP_SELECT_Int(intcode, fpcode) intcode
186 #define FP_SELECT_Long(intcode, fpcode) intcode
187 #define FP_SELECT_Float(intcode, fpcode) fpcode
188 #define FP_SELECT_Double(intcode, fpcode) fpcode
189 #define FP_SELECT(TypeName, intcode, fpcode) \
190 FP_SELECT_##TypeName(intcode, fpcode)
191
192 #define COMMA ,
193
194 // Choose DT_RETURN_MARK macros based on the type: float/double -> void
195 // (dtrace doesn't do FP yet)
196 #ifndef USDT2
197 #define DT_RETURN_MARK_DECL_FOR(TypeName, name, type) \
198 FP_SELECT(TypeName, \
199 DT_RETURN_MARK_DECL(name, type), DT_VOID_RETURN_MARK_DECL(name) )
200 #else /* USDT2 */
201 #define DT_RETURN_MARK_DECL_FOR(TypeName, name, type, probe) \
202 FP_SELECT(TypeName, \
203 DT_RETURN_MARK_DECL(name, type, probe), DT_VOID_RETURN_MARK_DECL(name, probe) )
204 #endif /* USDT2 */
205 #define DT_RETURN_MARK_FOR(TypeName, name, type, ref) \
206 FP_SELECT(TypeName, \
207 DT_RETURN_MARK(name, type, ref), DT_VOID_RETURN_MARK(name) )
208
209
210 // out-of-line helpers for class jfieldIDWorkaround:
211
212 bool jfieldIDWorkaround::is_valid_jfieldID(Klass* k, jfieldID id) {
213 if (jfieldIDWorkaround::is_instance_jfieldID(k, id)) {
214 uintptr_t as_uint = (uintptr_t) id;
215 intptr_t offset = raw_instance_offset(id);
216 if (is_checked_jfieldID(id)) {
217 if (!klass_hash_ok(k, id)) {
218 return false;
219 }
220 }
221 return InstanceKlass::cast(k)->contains_field_offset(offset);
222 } else {
223 JNIid* result = (JNIid*) id;
224 #ifdef ASSERT
225 return result != NULL && result->is_static_field_id();
226 #else
227 return result != NULL;
228 #endif
229 }
230 }
231
232
233 intptr_t jfieldIDWorkaround::encode_klass_hash(Klass* k, intptr_t offset) {
234 if (offset <= small_offset_mask) {
235 Klass* field_klass = k;
236 Klass* super_klass = Klass::cast(field_klass)->super();
237 // With compressed oops the most super class with nonstatic fields would
238 // be the owner of fields embedded in the header.
239 while (InstanceKlass::cast(super_klass)->has_nonstatic_fields() &&
240 InstanceKlass::cast(super_klass)->contains_field_offset(offset)) {
241 field_klass = super_klass; // super contains the field also
242 super_klass = Klass::cast(field_klass)->super();
243 }
244 debug_only(No_Safepoint_Verifier nosafepoint;)
245 uintptr_t klass_hash = field_klass->identity_hash();
246 return ((klass_hash & klass_mask) << klass_shift) | checked_mask_in_place;
247 } else {
248 #if 0
249 #ifndef PRODUCT
250 {
251 ResourceMark rm;
252 warning("VerifyJNIFields: long offset %d in %s", offset, Klass::cast(k)->external_name());
253 }
254 #endif
255 #endif
256 return 0;
257 }
258 }
259
260 bool jfieldIDWorkaround::klass_hash_ok(Klass* k, jfieldID id) {
261 uintptr_t as_uint = (uintptr_t) id;
262 intptr_t klass_hash = (as_uint >> klass_shift) & klass_mask;
263 do {
264 debug_only(No_Safepoint_Verifier nosafepoint;)
265 // Could use a non-blocking query for identity_hash here...
266 if ((k->identity_hash() & klass_mask) == klass_hash)
267 return true;
268 k = Klass::cast(k)->super();
269 } while (k != NULL);
270 return false;
271 }
272
273 void jfieldIDWorkaround::verify_instance_jfieldID(Klass* k, jfieldID id) {
274 guarantee(jfieldIDWorkaround::is_instance_jfieldID(k, id), "must be an instance field" );
275 uintptr_t as_uint = (uintptr_t) id;
276 intptr_t offset = raw_instance_offset(id);
277 if (VerifyJNIFields) {
278 if (is_checked_jfieldID(id)) {
279 guarantee(klass_hash_ok(k, id),
280 "Bug in native code: jfieldID class must match object");
281 } else {
282 #if 0
283 #ifndef PRODUCT
284 if (Verbose) {
285 ResourceMark rm;
286 warning("VerifyJNIFields: unverified offset %d for %s", offset, Klass::cast(k)->external_name());
287 }
288 #endif
289 #endif
290 }
291 }
292 guarantee(InstanceKlass::cast(k)->contains_field_offset(offset),
293 "Bug in native code: jfieldID offset must address interior of object");
294 }
295
296 // Pick a reasonable higher bound for local capacity requested
297 // for EnsureLocalCapacity and PushLocalFrame. We don't want it too
298 // high because a test (or very unusual application) may try to allocate
299 // that many handles and run out of swap space. An implementation is
300 // permitted to allocate more handles than the ensured capacity, so this
301 // value is set high enough to prevent compatibility problems.
302 const int MAX_REASONABLE_LOCAL_CAPACITY = 4*K;
303
304
305 // Wrapper to trace JNI functions
306
307 #ifdef ASSERT
308 Histogram* JNIHistogram;
309 static volatile jint JNIHistogram_lock = 0;
310
311 class JNITraceWrapper : public StackObj {
312 public:
313 JNITraceWrapper(const char* format, ...) {
314 if (TraceJNICalls) {
315 va_list ap;
316 va_start(ap, format);
317 tty->print("JNI ");
318 tty->vprint_cr(format, ap);
319 va_end(ap);
320 }
321 }
322 };
323
324 class JNIHistogramElement : public HistogramElement {
325 public:
326 JNIHistogramElement(const char* name);
327 };
328
329 JNIHistogramElement::JNIHistogramElement(const char* elementName) {
330 _name = elementName;
331 uintx count = 0;
332
333 while (Atomic::cmpxchg(1, &JNIHistogram_lock, 0) != 0) {
334 while (OrderAccess::load_acquire(&JNIHistogram_lock) != 0) {
335 count +=1;
336 if ( (WarnOnStalledSpinLock > 0)
337 && (count % WarnOnStalledSpinLock == 0)) {
338 warning("JNIHistogram_lock seems to be stalled");
339 }
340 }
341 }
342
343
344 if(JNIHistogram == NULL)
345 JNIHistogram = new Histogram("JNI Call Counts",100);
346
347 JNIHistogram->add_element(this);
348 Atomic::dec(&JNIHistogram_lock);
349 }
350
351 #define JNICountWrapper(arg) \
352 static JNIHistogramElement* e = new JNIHistogramElement(arg); \
353 /* There is a MT-race condition in VC++. So we need to make sure that that e has been initialized */ \
354 if (e != NULL) e->increment_count()
355 #define JNIWrapper(arg) JNICountWrapper(arg); JNITraceWrapper(arg)
356 #else
357 #define JNIWrapper(arg)
358 #endif
359
360
361 // Implementation of JNI entries
362
363 #ifndef USDT2
364 DT_RETURN_MARK_DECL(DefineClass, jclass);
365 #else /* USDT2 */
366 DT_RETURN_MARK_DECL(DefineClass, jclass
367 , HOTSPOT_JNI_DEFINECLASS_RETURN(_ret_ref));
368 #endif /* USDT2 */
369
370 JNI_ENTRY(jclass, jni_DefineClass(JNIEnv *env, const char *name, jobject loaderRef,
371 const jbyte *buf, jsize bufLen))
372 JNIWrapper("DefineClass");
373
374 #ifndef USDT2
375 DTRACE_PROBE5(hotspot_jni, DefineClass__entry,
376 env, name, loaderRef, buf, bufLen);
377 #else /* USDT2 */
378 HOTSPOT_JNI_DEFINECLASS_ENTRY(
379 env, (char*) name, loaderRef, (char*) buf, bufLen);
380 #endif /* USDT2 */
381 jclass cls = NULL;
382 DT_RETURN_MARK(DefineClass, jclass, (const jclass&)cls);
383
384 TempNewSymbol class_name = NULL;
385 // Since exceptions can be thrown, class initialization can take place
386 // if name is NULL no check for class name in .class stream has to be made.
387 if (name != NULL) {
388 const int str_len = (int)strlen(name);
389 if (str_len > Symbol::max_length()) {
390 // It's impossible to create this class; the name cannot fit
391 // into the constant pool.
392 THROW_MSG_0(vmSymbols::java_lang_NoClassDefFoundError(), name);
393 }
394 class_name = SymbolTable::new_symbol(name, CHECK_NULL);
395 }
396 ResourceMark rm(THREAD);
397 ClassFileStream st((u1*) buf, bufLen, NULL);
398 Handle class_loader (THREAD, JNIHandles::resolve(loaderRef));
399
400 if (UsePerfData && !class_loader.is_null()) {
401 // check whether the current caller thread holds the lock or not.
402 // If not, increment the corresponding counter
403 if (ObjectSynchronizer::
404 query_lock_ownership((JavaThread*)THREAD, class_loader) !=
405 ObjectSynchronizer::owner_self) {
406 ClassLoader::sync_JNIDefineClassLockFreeCounter()->inc();
407 }
408 }
409 Klass* k = SystemDictionary::resolve_from_stream(class_name, class_loader,
410 Handle(), &st, true,
411 CHECK_NULL);
412
413 if (TraceClassResolution && k != NULL) {
414 trace_class_resolution(k);
415 }
416
417 cls = (jclass)JNIHandles::make_local(
418 env, Klass::cast(k)->java_mirror());
419 return cls;
420 JNI_END
421
422
423
424 static bool first_time_FindClass = true;
425
426 #ifndef USDT2
427 DT_RETURN_MARK_DECL(FindClass, jclass);
428 #else /* USDT2 */
429 DT_RETURN_MARK_DECL(FindClass, jclass
430 , HOTSPOT_JNI_FINDCLASS_RETURN(_ret_ref));
431 #endif /* USDT2 */
432
433 JNI_ENTRY(jclass, jni_FindClass(JNIEnv *env, const char *name))
434 JNIWrapper("FindClass");
435 #ifndef USDT2
436 DTRACE_PROBE2(hotspot_jni, FindClass__entry, env, name);
437 #else /* USDT2 */
438 HOTSPOT_JNI_FINDCLASS_ENTRY(
439 env, (char *)name);
440 #endif /* USDT2 */
441
442 jclass result = NULL;
443 DT_RETURN_MARK(FindClass, jclass, (const jclass&)result);
444
445 // Remember if we are the first invocation of jni_FindClass
446 bool first_time = first_time_FindClass;
447 first_time_FindClass = false;
448
449 // Sanity check the name: it cannot be null or larger than the maximum size
450 // name we can fit in the constant pool.
451 if (name == NULL || (int)strlen(name) > Symbol::max_length()) {
452 THROW_MSG_0(vmSymbols::java_lang_NoClassDefFoundError(), name);
453 }
454
455 //%note jni_3
456 Handle loader;
457 Handle protection_domain;
458 // Find calling class
459 instanceKlassHandle k (THREAD, thread->security_get_caller_class(0));
460 if (k.not_null()) {
461 loader = Handle(THREAD, k->class_loader());
462 // Special handling to make sure JNI_OnLoad and JNI_OnUnload are executed
463 // in the correct class context.
464 if (loader.is_null() &&
465 k->name() == vmSymbols::java_lang_ClassLoader_NativeLibrary()) {
466 JavaValue result(T_OBJECT);
467 JavaCalls::call_static(&result, k,
468 vmSymbols::getFromClass_name(),
469 vmSymbols::void_class_signature(),
470 thread);
471 if (HAS_PENDING_EXCEPTION) {
472 Handle ex(thread, thread->pending_exception());
473 CLEAR_PENDING_EXCEPTION;
474 THROW_HANDLE_0(ex);
475 }
476 oop mirror = (oop) result.get_jobject();
477 loader = Handle(THREAD,
478 InstanceKlass::cast(java_lang_Class::as_Klass(mirror))->class_loader());
479 protection_domain = Handle(THREAD,
480 InstanceKlass::cast(java_lang_Class::as_Klass(mirror))->protection_domain());
481 }
482 } else {
483 // We call ClassLoader.getSystemClassLoader to obtain the system class loader.
484 loader = Handle(THREAD, SystemDictionary::java_system_loader());
485 }
486
487 TempNewSymbol sym = SymbolTable::new_symbol(name, CHECK_NULL);
488 result = find_class_from_class_loader(env, sym, true, loader,
489 protection_domain, true, thread);
490
491 if (TraceClassResolution && result != NULL) {
492 trace_class_resolution(java_lang_Class::as_Klass(JNIHandles::resolve_non_null(result)));
493 }
494
495 // If we were the first invocation of jni_FindClass, we enable compilation again
496 // rather than just allowing invocation counter to overflow and decay.
497 // Controlled by flag DelayCompilationDuringStartup.
498 if (first_time && !CompileTheWorld)
499 CompilationPolicy::completed_vm_startup();
500
501 return result;
502 JNI_END
503
504 #ifndef USDT2
505 DT_RETURN_MARK_DECL(FromReflectedMethod, jmethodID);
506 #else /* USDT2 */
507 DT_RETURN_MARK_DECL(FromReflectedMethod, jmethodID
508 , HOTSPOT_JNI_FROMREFLECTEDMETHOD_RETURN((uintptr_t)_ret_ref));
509 #endif /* USDT2 */
510
511 JNI_ENTRY(jmethodID, jni_FromReflectedMethod(JNIEnv *env, jobject method))
512 JNIWrapper("FromReflectedMethod");
513 #ifndef USDT2
514 DTRACE_PROBE2(hotspot_jni, FromReflectedMethod__entry, env, method);
515 #else /* USDT2 */
516 HOTSPOT_JNI_FROMREFLECTEDMETHOD_ENTRY(
517 env, method);
518 #endif /* USDT2 */
519 jmethodID ret = NULL;
520 DT_RETURN_MARK(FromReflectedMethod, jmethodID, (const jmethodID&)ret);
521
522 // method is a handle to a java.lang.reflect.Method object
523 oop reflected = JNIHandles::resolve_non_null(method);
524 oop mirror = NULL;
525 int slot = 0;
526
527 if (reflected->klass() == SystemDictionary::reflect_Constructor_klass()) {
528 mirror = java_lang_reflect_Constructor::clazz(reflected);
529 slot = java_lang_reflect_Constructor::slot(reflected);
530 } else {
531 assert(reflected->klass() == SystemDictionary::reflect_Method_klass(), "wrong type");
532 mirror = java_lang_reflect_Method::clazz(reflected);
533 slot = java_lang_reflect_Method::slot(reflected);
534 }
535 Klass* k = java_lang_Class::as_Klass(mirror);
536
537 KlassHandle k1(THREAD, k);
538 // Make sure class is initialized before handing id's out to methods
539 Klass::cast(k1())->initialize(CHECK_NULL);
540 Method* m = InstanceKlass::cast(k1())->method_with_idnum(slot);
541 ret = m==NULL? NULL : m->jmethod_id(); // return NULL if reflected method deleted
542 return ret;
543 JNI_END
544
545 #ifndef USDT2
546 DT_RETURN_MARK_DECL(FromReflectedField, jfieldID);
547 #else /* USDT2 */
548 DT_RETURN_MARK_DECL(FromReflectedField, jfieldID
549 , HOTSPOT_JNI_FROMREFLECTEDFIELD_RETURN((uintptr_t)_ret_ref));
550 #endif /* USDT2 */
551
552 JNI_ENTRY(jfieldID, jni_FromReflectedField(JNIEnv *env, jobject field))
553 JNIWrapper("FromReflectedField");
554 #ifndef USDT2
555 DTRACE_PROBE2(hotspot_jni, FromReflectedField__entry, env, field);
556 #else /* USDT2 */
557 HOTSPOT_JNI_FROMREFLECTEDFIELD_ENTRY(
558 env, field);
559 #endif /* USDT2 */
560 jfieldID ret = NULL;
561 DT_RETURN_MARK(FromReflectedField, jfieldID, (const jfieldID&)ret);
562
563 // field is a handle to a java.lang.reflect.Field object
564 oop reflected = JNIHandles::resolve_non_null(field);
565 oop mirror = java_lang_reflect_Field::clazz(reflected);
566 Klass* k = java_lang_Class::as_Klass(mirror);
567 int slot = java_lang_reflect_Field::slot(reflected);
568 int modifiers = java_lang_reflect_Field::modifiers(reflected);
569
570 KlassHandle k1(THREAD, k);
571 // Make sure class is initialized before handing id's out to fields
572 Klass::cast(k1())->initialize(CHECK_NULL);
573
574 // First check if this is a static field
575 if (modifiers & JVM_ACC_STATIC) {
576 intptr_t offset = InstanceKlass::cast(k1())->field_offset( slot );
577 JNIid* id = InstanceKlass::cast(k1())->jni_id_for(offset);
578 assert(id != NULL, "corrupt Field object");
579 debug_only(id->set_is_static_field_id();)
580 // A jfieldID for a static field is a JNIid specifying the field holder and the offset within the Klass*
581 ret = jfieldIDWorkaround::to_static_jfieldID(id);
582 return ret;
583 }
584
585 // The slot is the index of the field description in the field-array
586 // The jfieldID is the offset of the field within the object
587 // It may also have hash bits for k, if VerifyJNIFields is turned on.
588 intptr_t offset = InstanceKlass::cast(k1())->field_offset( slot );
589 assert(InstanceKlass::cast(k1())->contains_field_offset(offset), "stay within object");
590 ret = jfieldIDWorkaround::to_instance_jfieldID(k1(), offset);
591 return ret;
592 JNI_END
593
594 #ifndef USDT2
595 DT_RETURN_MARK_DECL(ToReflectedMethod, jobject);
596 #else /* USDT2 */
597 DT_RETURN_MARK_DECL(ToReflectedMethod, jobject
598 , HOTSPOT_JNI_TOREFLECTEDMETHOD_RETURN(_ret_ref));
599 #endif /* USDT2 */
600
601 JNI_ENTRY(jobject, jni_ToReflectedMethod(JNIEnv *env, jclass cls, jmethodID method_id, jboolean isStatic))
602 JNIWrapper("ToReflectedMethod");
603 #ifndef USDT2
604 DTRACE_PROBE4(hotspot_jni, ToReflectedMethod__entry, env, cls, method_id, isStatic);
605 #else /* USDT2 */
606 HOTSPOT_JNI_TOREFLECTEDMETHOD_ENTRY(
607 env, cls, (uintptr_t) method_id, isStatic);
608 #endif /* USDT2 */
609 jobject ret = NULL;
610 DT_RETURN_MARK(ToReflectedMethod, jobject, (const jobject&)ret);
611
612 methodHandle m (THREAD, Method::resolve_jmethod_id(method_id));
613 assert(m->is_static() == (isStatic != 0), "jni_ToReflectedMethod access flags doesn't match");
614 oop reflection_method;
615 if (m->is_initializer()) {
616 reflection_method = Reflection::new_constructor(m, CHECK_NULL);
617 } else {
618 reflection_method = Reflection::new_method(m, UseNewReflection, false, CHECK_NULL);
619 }
620 ret = JNIHandles::make_local(env, reflection_method);
621 return ret;
622 JNI_END
623
624 #ifndef USDT2
625 DT_RETURN_MARK_DECL(GetSuperclass, jclass);
626 #else /* USDT2 */
627 DT_RETURN_MARK_DECL(GetSuperclass, jclass
628 , HOTSPOT_JNI_GETSUPERCLASS_RETURN(_ret_ref));
629 #endif /* USDT2 */
630
631 JNI_ENTRY(jclass, jni_GetSuperclass(JNIEnv *env, jclass sub))
632 JNIWrapper("GetSuperclass");
633 #ifndef USDT2
634 DTRACE_PROBE2(hotspot_jni, GetSuperclass__entry, env, sub);
635 #else /* USDT2 */
636 HOTSPOT_JNI_GETSUPERCLASS_ENTRY(
637 env, sub);
638 #endif /* USDT2 */
639 jclass obj = NULL;
640 DT_RETURN_MARK(GetSuperclass, jclass, (const jclass&)obj);
641
642 oop mirror = JNIHandles::resolve_non_null(sub);
643 // primitive classes return NULL
644 if (java_lang_Class::is_primitive(mirror)) return NULL;
645
646 // Rules of Class.getSuperClass as implemented by KLass::java_super:
647 // arrays return Object
648 // interfaces return NULL
649 // proper classes return Klass::super()
650 Klass* k = java_lang_Class::as_Klass(mirror);
651 if (Klass::cast(k)->is_interface()) return NULL;
652
653 // return mirror for superclass
654 Klass* super = Klass::cast(k)->java_super();
655 // super2 is the value computed by the compiler's getSuperClass intrinsic:
656 debug_only(Klass* super2 = ( Klass::cast(k)->oop_is_array()
657 ? SystemDictionary::Object_klass()
658 : Klass::cast(k)->super() ) );
659 assert(super == super2,
660 "java_super computation depends on interface, array, other super");
661 obj = (super == NULL) ? NULL : (jclass) JNIHandles::make_local(Klass::cast(super)->java_mirror());
662 return obj;
663 JNI_END
664
665 JNI_QUICK_ENTRY(jboolean, jni_IsAssignableFrom(JNIEnv *env, jclass sub, jclass super))
666 JNIWrapper("IsSubclassOf");
667 #ifndef USDT2
668 DTRACE_PROBE3(hotspot_jni, IsAssignableFrom__entry, env, sub, super);
669 #else /* USDT2 */
670 HOTSPOT_JNI_ISASSIGNABLEFROM_ENTRY(
671 env, sub, super);
672 #endif /* USDT2 */
673 oop sub_mirror = JNIHandles::resolve_non_null(sub);
674 oop super_mirror = JNIHandles::resolve_non_null(super);
675 if (java_lang_Class::is_primitive(sub_mirror) ||
676 java_lang_Class::is_primitive(super_mirror)) {
677 jboolean ret = (sub_mirror == super_mirror);
678 #ifndef USDT2
679 DTRACE_PROBE1(hotspot_jni, IsAssignableFrom__return, ret);
680 #else /* USDT2 */
681 HOTSPOT_JNI_ISASSIGNABLEFROM_RETURN(
682 ret);
683 #endif /* USDT2 */
684 return ret;
685 }
686 Klass* sub_klass = java_lang_Class::as_Klass(sub_mirror);
687 Klass* super_klass = java_lang_Class::as_Klass(super_mirror);
688 assert(sub_klass != NULL && super_klass != NULL, "invalid arguments to jni_IsAssignableFrom");
689 jboolean ret = Klass::cast(sub_klass)->is_subtype_of(super_klass) ?
690 JNI_TRUE : JNI_FALSE;
691 #ifndef USDT2
692 DTRACE_PROBE1(hotspot_jni, IsAssignableFrom__return, ret);
693 #else /* USDT2 */
694 HOTSPOT_JNI_ISASSIGNABLEFROM_RETURN(
695 ret);
696 #endif /* USDT2 */
697 return ret;
698 JNI_END
699
700 #ifndef USDT2
701 DT_RETURN_MARK_DECL(Throw, jint);
702 #else /* USDT2 */
703 DT_RETURN_MARK_DECL(Throw, jint
704 , HOTSPOT_JNI_THROW_RETURN(_ret_ref));
705 #endif /* USDT2 */
706
707 JNI_ENTRY(jint, jni_Throw(JNIEnv *env, jthrowable obj))
708 JNIWrapper("Throw");
709 #ifndef USDT2
710 DTRACE_PROBE2(hotspot_jni, Throw__entry, env, obj);
711 #else /* USDT2 */
712 HOTSPOT_JNI_THROW_ENTRY(
713 env, obj);
714 #endif /* USDT2 */
715 jint ret = JNI_OK;
716 DT_RETURN_MARK(Throw, jint, (const jint&)ret);
717
718 THROW_OOP_(JNIHandles::resolve(obj), JNI_OK);
719 ShouldNotReachHere();
720 JNI_END
721
722 #ifndef USDT2
723 DT_RETURN_MARK_DECL(ThrowNew, jint);
724 #else /* USDT2 */
725 DT_RETURN_MARK_DECL(ThrowNew, jint
726 , HOTSPOT_JNI_THROWNEW_RETURN(_ret_ref));
727 #endif /* USDT2 */
728
729 JNI_ENTRY(jint, jni_ThrowNew(JNIEnv *env, jclass clazz, const char *message))
730 JNIWrapper("ThrowNew");
731 #ifndef USDT2
732 DTRACE_PROBE3(hotspot_jni, ThrowNew__entry, env, clazz, message);
733 #else /* USDT2 */
734 HOTSPOT_JNI_THROWNEW_ENTRY(
735 env, clazz, (char *) message);
736 #endif /* USDT2 */
737 jint ret = JNI_OK;
738 DT_RETURN_MARK(ThrowNew, jint, (const jint&)ret);
739
740 InstanceKlass* k = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz)));
741 Symbol* name = k->name();
742 Handle class_loader (THREAD, k->class_loader());
743 Handle protection_domain (THREAD, k->protection_domain());
744 THROW_MSG_LOADER_(name, (char *)message, class_loader, protection_domain, JNI_OK);
745 ShouldNotReachHere();
746 JNI_END
747
748
749 // JNI functions only transform a pending async exception to a synchronous
750 // exception in ExceptionOccurred and ExceptionCheck calls, since
751 // delivering an async exception in other places won't change the native
752 // code's control flow and would be harmful when native code further calls
753 // JNI functions with a pending exception. Async exception is also checked
754 // during the call, so ExceptionOccurred/ExceptionCheck won't return
755 // false but deliver the async exception at the very end during
756 // state transition.
757
758 static void jni_check_async_exceptions(JavaThread *thread) {
759 assert(thread == Thread::current(), "must be itself");
760 thread->check_and_handle_async_exceptions();
761 }
762
763 JNI_ENTRY_NO_PRESERVE(jthrowable, jni_ExceptionOccurred(JNIEnv *env))
764 JNIWrapper("ExceptionOccurred");
765 #ifndef USDT2
766 DTRACE_PROBE1(hotspot_jni, ExceptionOccurred__entry, env);
767 #else /* USDT2 */
768 HOTSPOT_JNI_EXCEPTIONOCCURRED_ENTRY(
769 env);
770 #endif /* USDT2 */
771 jni_check_async_exceptions(thread);
772 oop exception = thread->pending_exception();
773 jthrowable ret = (jthrowable) JNIHandles::make_local(env, exception);
774 #ifndef USDT2
775 DTRACE_PROBE1(hotspot_jni, ExceptionOccurred__return, ret);
776 #else /* USDT2 */
777 HOTSPOT_JNI_EXCEPTIONOCCURRED_RETURN(
778 ret);
779 #endif /* USDT2 */
780 return ret;
781 JNI_END
782
783
784 JNI_ENTRY_NO_PRESERVE(void, jni_ExceptionDescribe(JNIEnv *env))
785 JNIWrapper("ExceptionDescribe");
786 #ifndef USDT2
787 DTRACE_PROBE1(hotspot_jni, ExceptionDescribe__entry, env);
788 #else /* USDT2 */
789 HOTSPOT_JNI_EXCEPTIONDESCRIBE_ENTRY(
790 env);
791 #endif /* USDT2 */
792 if (thread->has_pending_exception()) {
793 Handle ex(thread, thread->pending_exception());
794 thread->clear_pending_exception();
795 if (ex->is_a(SystemDictionary::ThreadDeath_klass())) {
796 // Don't print anything if we are being killed.
797 } else {
798 jio_fprintf(defaultStream::error_stream(), "Exception ");
799 if (thread != NULL && thread->threadObj() != NULL) {
800 ResourceMark rm(THREAD);
801 jio_fprintf(defaultStream::error_stream(),
802 "in thread \"%s\" ", thread->get_thread_name());
803 }
804 if (ex->is_a(SystemDictionary::Throwable_klass())) {
805 JavaValue result(T_VOID);
806 JavaCalls::call_virtual(&result,
807 ex,
808 KlassHandle(THREAD,
809 SystemDictionary::Throwable_klass()),
810 vmSymbols::printStackTrace_name(),
811 vmSymbols::void_method_signature(),
812 THREAD);
813 // If an exception is thrown in the call it gets thrown away. Not much
814 // we can do with it. The native code that calls this, does not check
815 // for the exception - hence, it might still be in the thread when DestroyVM gets
816 // called, potentially causing a few asserts to trigger - since no pending exception
817 // is expected.
818 CLEAR_PENDING_EXCEPTION;
819 } else {
820 ResourceMark rm(THREAD);
821 jio_fprintf(defaultStream::error_stream(),
822 ". Uncaught exception of type %s.",
823 Klass::cast(ex->klass())->external_name());
824 }
825 }
826 }
827 #ifndef USDT2
828 DTRACE_PROBE(hotspot_jni, ExceptionDescribe__return);
829 #else /* USDT2 */
830 HOTSPOT_JNI_EXCEPTIONDESCRIBE_RETURN(
831 );
832 #endif /* USDT2 */
833 JNI_END
834
835
836 JNI_QUICK_ENTRY(void, jni_ExceptionClear(JNIEnv *env))
837 JNIWrapper("ExceptionClear");
838 #ifndef USDT2
839 DTRACE_PROBE1(hotspot_jni, ExceptionClear__entry, env);
840 #else /* USDT2 */
841 HOTSPOT_JNI_EXCEPTIONCLEAR_ENTRY(
842 env);
843 #endif /* USDT2 */
844
845 // The jni code might be using this API to clear java thrown exception.
846 // So just mark jvmti thread exception state as exception caught.
847 JvmtiThreadState *state = JavaThread::current()->jvmti_thread_state();
848 if (state != NULL && state->is_exception_detected()) {
849 state->set_exception_caught();
850 }
851 thread->clear_pending_exception();
852 #ifndef USDT2
853 DTRACE_PROBE(hotspot_jni, ExceptionClear__return);
854 #else /* USDT2 */
855 HOTSPOT_JNI_EXCEPTIONCLEAR_RETURN(
856 );
857 #endif /* USDT2 */
858 JNI_END
859
860
861 JNI_ENTRY(void, jni_FatalError(JNIEnv *env, const char *msg))
862 JNIWrapper("FatalError");
863 #ifndef USDT2
864 DTRACE_PROBE2(hotspot_jni, FatalError__entry, env, msg);
865 #else /* USDT2 */
866 HOTSPOT_JNI_FATALERROR_ENTRY(
867 env, (char *) msg);
868 #endif /* USDT2 */
869 tty->print_cr("FATAL ERROR in native method: %s", msg);
870 thread->print_stack();
871 os::abort(); // Dump core and abort
872 JNI_END
873
874
875 JNI_ENTRY(jint, jni_PushLocalFrame(JNIEnv *env, jint capacity))
876 JNIWrapper("PushLocalFrame");
877 #ifndef USDT2
878 DTRACE_PROBE2(hotspot_jni, PushLocalFrame__entry, env, capacity);
879 #else /* USDT2 */
880 HOTSPOT_JNI_PUSHLOCALFRAME_ENTRY(
881 env, capacity);
882 #endif /* USDT2 */
883 //%note jni_11
884 if (capacity < 0 && capacity > MAX_REASONABLE_LOCAL_CAPACITY) {
885 #ifndef USDT2
886 DTRACE_PROBE1(hotspot_jni, PushLocalFrame__return, JNI_ERR);
887 #else /* USDT2 */
888 HOTSPOT_JNI_PUSHLOCALFRAME_RETURN(
889 (uint32_t)JNI_ERR);
890 #endif /* USDT2 */
891 return JNI_ERR;
892 }
893 JNIHandleBlock* old_handles = thread->active_handles();
894 JNIHandleBlock* new_handles = JNIHandleBlock::allocate_block(thread);
895 assert(new_handles != NULL, "should not be NULL");
896 new_handles->set_pop_frame_link(old_handles);
897 thread->set_active_handles(new_handles);
898 jint ret = JNI_OK;
899 #ifndef USDT2
900 DTRACE_PROBE1(hotspot_jni, PushLocalFrame__return, ret);
901 #else /* USDT2 */
902 HOTSPOT_JNI_PUSHLOCALFRAME_RETURN(
903 ret);
904 #endif /* USDT2 */
905 return ret;
906 JNI_END
907
908
909 JNI_ENTRY(jobject, jni_PopLocalFrame(JNIEnv *env, jobject result))
910 JNIWrapper("PopLocalFrame");
911 #ifndef USDT2
912 DTRACE_PROBE2(hotspot_jni, PopLocalFrame__entry, env, result);
913 #else /* USDT2 */
914 HOTSPOT_JNI_POPLOCALFRAME_ENTRY(
915 env, result);
916 #endif /* USDT2 */
917 //%note jni_11
918 Handle result_handle(thread, JNIHandles::resolve(result));
919 JNIHandleBlock* old_handles = thread->active_handles();
920 JNIHandleBlock* new_handles = old_handles->pop_frame_link();
921 if (new_handles != NULL) {
922 // As a sanity check we only release the handle blocks if the pop_frame_link is not NULL.
923 // This way code will still work if PopLocalFrame is called without a corresponding
924 // PushLocalFrame call. Note that we set the pop_frame_link to NULL explicitly, otherwise
925 // the release_block call will release the blocks.
926 thread->set_active_handles(new_handles);
927 old_handles->set_pop_frame_link(NULL); // clear link we won't release new_handles below
928 JNIHandleBlock::release_block(old_handles, thread); // may block
929 result = JNIHandles::make_local(thread, result_handle());
930 }
931 #ifndef USDT2
932 DTRACE_PROBE1(hotspot_jni, PopLocalFrame__return, result);
933 #else /* USDT2 */
934 HOTSPOT_JNI_POPLOCALFRAME_RETURN(
935 result);
936 #endif /* USDT2 */
937 return result;
938 JNI_END
939
940
941 JNI_ENTRY(jobject, jni_NewGlobalRef(JNIEnv *env, jobject ref))
942 JNIWrapper("NewGlobalRef");
943 #ifndef USDT2
944 DTRACE_PROBE2(hotspot_jni, NewGlobalRef__entry, env, ref);
945 #else /* USDT2 */
946 HOTSPOT_JNI_NEWGLOBALREF_ENTRY(
947 env, ref);
948 #endif /* USDT2 */
949 Handle ref_handle(thread, JNIHandles::resolve(ref));
950 jobject ret = JNIHandles::make_global(ref_handle);
951 #ifndef USDT2
952 DTRACE_PROBE1(hotspot_jni, NewGlobalRef__return, ret);
953 #else /* USDT2 */
954 HOTSPOT_JNI_NEWGLOBALREF_RETURN(
955 ret);
956 #endif /* USDT2 */
957 return ret;
958 JNI_END
959
960 // Must be JNI_ENTRY (with HandleMark)
961 JNI_ENTRY_NO_PRESERVE(void, jni_DeleteGlobalRef(JNIEnv *env, jobject ref))
962 JNIWrapper("DeleteGlobalRef");
963 #ifndef USDT2
964 DTRACE_PROBE2(hotspot_jni, DeleteGlobalRef__entry, env, ref);
965 #else /* USDT2 */
966 HOTSPOT_JNI_DELETEGLOBALREF_ENTRY(
967 env, ref);
968 #endif /* USDT2 */
969 JNIHandles::destroy_global(ref);
970 #ifndef USDT2
971 DTRACE_PROBE(hotspot_jni, DeleteGlobalRef__return);
972 #else /* USDT2 */
973 HOTSPOT_JNI_DELETEGLOBALREF_RETURN(
974 );
975 #endif /* USDT2 */
976 JNI_END
977
978 JNI_QUICK_ENTRY(void, jni_DeleteLocalRef(JNIEnv *env, jobject obj))
979 JNIWrapper("DeleteLocalRef");
980 #ifndef USDT2
981 DTRACE_PROBE2(hotspot_jni, DeleteLocalRef__entry, env, obj);
982 #else /* USDT2 */
983 HOTSPOT_JNI_DELETELOCALREF_ENTRY(
984 env, obj);
985 #endif /* USDT2 */
986 JNIHandles::destroy_local(obj);
987 #ifndef USDT2
988 DTRACE_PROBE(hotspot_jni, DeleteLocalRef__return);
989 #else /* USDT2 */
990 HOTSPOT_JNI_DELETELOCALREF_RETURN(
991 );
992 #endif /* USDT2 */
993 JNI_END
994
995 JNI_QUICK_ENTRY(jboolean, jni_IsSameObject(JNIEnv *env, jobject r1, jobject r2))
996 JNIWrapper("IsSameObject");
997 #ifndef USDT2
998 DTRACE_PROBE3(hotspot_jni, IsSameObject__entry, env, r1, r2);
999 #else /* USDT2 */
1000 HOTSPOT_JNI_ISSAMEOBJECT_ENTRY(
1001 env, r1, r2);
1002 #endif /* USDT2 */
1003 oop a = JNIHandles::resolve(r1);
1004 oop b = JNIHandles::resolve(r2);
1005 jboolean ret = (a == b) ? JNI_TRUE : JNI_FALSE;
1006 #ifndef USDT2
1007 DTRACE_PROBE1(hotspot_jni, IsSameObject__return, ret);
1008 #else /* USDT2 */
1009 HOTSPOT_JNI_ISSAMEOBJECT_RETURN(
1010 ret);
1011 #endif /* USDT2 */
1012 return ret;
1013 JNI_END
1014
1015
1016 JNI_ENTRY(jobject, jni_NewLocalRef(JNIEnv *env, jobject ref))
1017 JNIWrapper("NewLocalRef");
1018 #ifndef USDT2
1019 DTRACE_PROBE2(hotspot_jni, NewLocalRef__entry, env, ref);
1020 #else /* USDT2 */
1021 HOTSPOT_JNI_NEWLOCALREF_ENTRY(
1022 env, ref);
1023 #endif /* USDT2 */
1024 jobject ret = JNIHandles::make_local(env, JNIHandles::resolve(ref));
1025 #ifndef USDT2
1026 DTRACE_PROBE1(hotspot_jni, NewLocalRef__return, ret);
1027 #else /* USDT2 */
1028 HOTSPOT_JNI_NEWLOCALREF_RETURN(
1029 ret);
1030 #endif /* USDT2 */
1031 return ret;
1032 JNI_END
1033
1034 JNI_LEAF(jint, jni_EnsureLocalCapacity(JNIEnv *env, jint capacity))
1035 JNIWrapper("EnsureLocalCapacity");
1036 #ifndef USDT2
1037 DTRACE_PROBE2(hotspot_jni, EnsureLocalCapacity__entry, env, capacity);
1038 #else /* USDT2 */
1039 HOTSPOT_JNI_ENSURELOCALCAPACITY_ENTRY(
1040 env, capacity);
1041 #endif /* USDT2 */
1042 jint ret;
1043 if (capacity >= 0 && capacity <= MAX_REASONABLE_LOCAL_CAPACITY) {
1044 ret = JNI_OK;
1045 } else {
1046 ret = JNI_ERR;
1047 }
1048 #ifndef USDT2
1049 DTRACE_PROBE1(hotspot_jni, EnsureLocalCapacity__return, ret);
1050 #else /* USDT2 */
1051 HOTSPOT_JNI_ENSURELOCALCAPACITY_RETURN(
1052 ret);
1053 #endif /* USDT2 */
1054 return ret;
1055 JNI_END
1056
1057 // Return the Handle Type
1058 JNI_LEAF(jobjectRefType, jni_GetObjectRefType(JNIEnv *env, jobject obj))
1059 JNIWrapper("GetObjectRefType");
1060 #ifndef USDT2
1061 DTRACE_PROBE2(hotspot_jni, GetObjectRefType__entry, env, obj);
1062 #else /* USDT2 */
1063 HOTSPOT_JNI_GETOBJECTREFTYPE_ENTRY(
1064 env, obj);
1065 #endif /* USDT2 */
1066 jobjectRefType ret;
1067 if (JNIHandles::is_local_handle(thread, obj) ||
1068 JNIHandles::is_frame_handle(thread, obj))
1069 ret = JNILocalRefType;
1070 else if (JNIHandles::is_global_handle(obj))
1071 ret = JNIGlobalRefType;
1072 else if (JNIHandles::is_weak_global_handle(obj))
1073 ret = JNIWeakGlobalRefType;
1074 else
1075 ret = JNIInvalidRefType;
1076 #ifndef USDT2
1077 DTRACE_PROBE1(hotspot_jni, GetObjectRefType__return, ret);
1078 #else /* USDT2 */
1079 HOTSPOT_JNI_GETOBJECTREFTYPE_RETURN(
1080 (void *) ret);
1081 #endif /* USDT2 */
1082 return ret;
1083 JNI_END
1084
1085
1086 class JNI_ArgumentPusher : public SignatureIterator {
1087 protected:
1088 JavaCallArguments* _arguments;
1089
1090 virtual void get_bool () = 0;
1091 virtual void get_char () = 0;
1092 virtual void get_short () = 0;
1093 virtual void get_byte () = 0;
1094 virtual void get_int () = 0;
1095 virtual void get_long () = 0;
1096 virtual void get_float () = 0;
1097 virtual void get_double () = 0;
1098 virtual void get_object () = 0;
1099
1100 JNI_ArgumentPusher(Symbol* signature) : SignatureIterator(signature) {
1101 this->_return_type = T_ILLEGAL;
1102 _arguments = NULL;
1103 }
1104
1105 public:
1106 virtual void iterate( uint64_t fingerprint ) = 0;
1107
1108 void set_java_argument_object(JavaCallArguments *arguments) { _arguments = arguments; }
1109
1110 inline void do_bool() { if (!is_return_type()) get_bool(); }
1111 inline void do_char() { if (!is_return_type()) get_char(); }
1112 inline void do_short() { if (!is_return_type()) get_short(); }
1113 inline void do_byte() { if (!is_return_type()) get_byte(); }
1114 inline void do_int() { if (!is_return_type()) get_int(); }
1115 inline void do_long() { if (!is_return_type()) get_long(); }
1116 inline void do_float() { if (!is_return_type()) get_float(); }
1117 inline void do_double() { if (!is_return_type()) get_double(); }
1118 inline void do_object(int begin, int end) { if (!is_return_type()) get_object(); }
1119 inline void do_array(int begin, int end) { if (!is_return_type()) get_object(); } // do_array uses get_object -- there is no get_array
1120 inline void do_void() { }
1121
1122 JavaCallArguments* arguments() { return _arguments; }
1123 void push_receiver(Handle h) { _arguments->push_oop(h); }
1124 };
1125
1126
1127 class JNI_ArgumentPusherVaArg : public JNI_ArgumentPusher {
1128 protected:
1129 va_list _ap;
1130
1131 inline void get_bool() { _arguments->push_int(va_arg(_ap, jint)); } // bool is coerced to int when using va_arg
1132 inline void get_char() { _arguments->push_int(va_arg(_ap, jint)); } // char is coerced to int when using va_arg
1133 inline void get_short() { _arguments->push_int(va_arg(_ap, jint)); } // short is coerced to int when using va_arg
1134 inline void get_byte() { _arguments->push_int(va_arg(_ap, jint)); } // byte is coerced to int when using va_arg
1135 inline void get_int() { _arguments->push_int(va_arg(_ap, jint)); }
1136
1137 // each of these paths is exercized by the various jck Call[Static,Nonvirtual,][Void,Int,..]Method[A,V,] tests
1138
1139 inline void get_long() { _arguments->push_long(va_arg(_ap, jlong)); }
1140 inline void get_float() { _arguments->push_float((jfloat)va_arg(_ap, jdouble)); } // float is coerced to double w/ va_arg
1141 inline void get_double() { _arguments->push_double(va_arg(_ap, jdouble)); }
1142 inline void get_object() { jobject l = va_arg(_ap, jobject);
1143 _arguments->push_oop(Handle((oop *)l, false)); }
1144
1145 inline void set_ap(va_list rap) {
1146 #ifdef va_copy
1147 va_copy(_ap, rap);
1148 #elif defined (__va_copy)
1149 __va_copy(_ap, rap);
1150 #else
1151 _ap = rap;
1152 #endif
1153 }
1154
1155 public:
1156 JNI_ArgumentPusherVaArg(Symbol* signature, va_list rap)
1157 : JNI_ArgumentPusher(signature) {
1158 set_ap(rap);
1159 }
1160 JNI_ArgumentPusherVaArg(jmethodID method_id, va_list rap)
1161 : JNI_ArgumentPusher(Method::resolve_jmethod_id(method_id)->signature()) {
1162 set_ap(rap);
1163 }
1164
1165 // Optimized path if we have the bitvector form of signature
1166 void iterate( uint64_t fingerprint ) {
1167 if ( fingerprint == UCONST64(-1) ) SignatureIterator::iterate();// Must be too many arguments
1168 else {
1169 _return_type = (BasicType)((fingerprint >> static_feature_size) &
1170 result_feature_mask);
1171
1172 assert(fingerprint, "Fingerprint should not be 0");
1173 fingerprint = fingerprint >> (static_feature_size + result_feature_size);
1174 while ( 1 ) {
1175 switch ( fingerprint & parameter_feature_mask ) {
1176 case bool_parm:
1177 case char_parm:
1178 case short_parm:
1179 case byte_parm:
1180 case int_parm:
1181 get_int();
1182 break;
1183 case obj_parm:
1184 get_object();
1185 break;
1186 case long_parm:
1187 get_long();
1188 break;
1189 case float_parm:
1190 get_float();
1191 break;
1192 case double_parm:
1193 get_double();
1194 break;
1195 case done_parm:
1196 return;
1197 break;
1198 default:
1199 ShouldNotReachHere();
1200 break;
1201 }
1202 fingerprint >>= parameter_feature_size;
1203 }
1204 }
1205 }
1206 };
1207
1208
1209 class JNI_ArgumentPusherArray : public JNI_ArgumentPusher {
1210 protected:
1211 const jvalue *_ap;
1212
1213 inline void get_bool() { _arguments->push_int((jint)(_ap++)->z); }
1214 inline void get_char() { _arguments->push_int((jint)(_ap++)->c); }
1215 inline void get_short() { _arguments->push_int((jint)(_ap++)->s); }
1216 inline void get_byte() { _arguments->push_int((jint)(_ap++)->b); }
1217 inline void get_int() { _arguments->push_int((jint)(_ap++)->i); }
1218
1219 inline void get_long() { _arguments->push_long((_ap++)->j); }
1220 inline void get_float() { _arguments->push_float((_ap++)->f); }
1221 inline void get_double() { _arguments->push_double((_ap++)->d);}
1222 inline void get_object() { _arguments->push_oop(Handle((oop *)(_ap++)->l, false)); }
1223
1224 inline void set_ap(const jvalue *rap) { _ap = rap; }
1225
1226 public:
1227 JNI_ArgumentPusherArray(Symbol* signature, const jvalue *rap)
1228 : JNI_ArgumentPusher(signature) {
1229 set_ap(rap);
1230 }
1231 JNI_ArgumentPusherArray(jmethodID method_id, const jvalue *rap)
1232 : JNI_ArgumentPusher(Method::resolve_jmethod_id(method_id)->signature()) {
1233 set_ap(rap);
1234 }
1235
1236 // Optimized path if we have the bitvector form of signature
1237 void iterate( uint64_t fingerprint ) {
1238 if ( fingerprint == UCONST64(-1) ) SignatureIterator::iterate(); // Must be too many arguments
1239 else {
1240 _return_type = (BasicType)((fingerprint >> static_feature_size) &
1241 result_feature_mask);
1242 assert(fingerprint, "Fingerprint should not be 0");
1243 fingerprint = fingerprint >> (static_feature_size + result_feature_size);
1244 while ( 1 ) {
1245 switch ( fingerprint & parameter_feature_mask ) {
1246 case bool_parm:
1247 get_bool();
1248 break;
1249 case char_parm:
1250 get_char();
1251 break;
1252 case short_parm:
1253 get_short();
1254 break;
1255 case byte_parm:
1256 get_byte();
1257 break;
1258 case int_parm:
1259 get_int();
1260 break;
1261 case obj_parm:
1262 get_object();
1263 break;
1264 case long_parm:
1265 get_long();
1266 break;
1267 case float_parm:
1268 get_float();
1269 break;
1270 case double_parm:
1271 get_double();
1272 break;
1273 case done_parm:
1274 return;
1275 break;
1276 default:
1277 ShouldNotReachHere();
1278 break;
1279 }
1280 fingerprint >>= parameter_feature_size;
1281 }
1282 }
1283 }
1284 };
1285
1286
1287 enum JNICallType {
1288 JNI_STATIC,
1289 JNI_VIRTUAL,
1290 JNI_NONVIRTUAL
1291 };
1292
1293 static methodHandle jni_resolve_interface_call(Handle recv, methodHandle method, TRAPS) {
1294 assert(!method.is_null() , "method should not be null");
1295
1296 KlassHandle recv_klass; // Default to NULL (use of ?: can confuse gcc)
1297 if (recv.not_null()) recv_klass = KlassHandle(THREAD, recv->klass());
1298 KlassHandle spec_klass (THREAD, method->method_holder());
1299 Symbol* name = method->name();
1300 Symbol* signature = method->signature();
1301 CallInfo info;
1302 LinkResolver::resolve_interface_call(info, recv, recv_klass, spec_klass, name, signature, KlassHandle(), false, true, CHECK_(methodHandle()));
1303 return info.selected_method();
1304 }
1305
1306 static methodHandle jni_resolve_virtual_call(Handle recv, methodHandle method, TRAPS) {
1307 assert(!method.is_null() , "method should not be null");
1308
1309 KlassHandle recv_klass; // Default to NULL (use of ?: can confuse gcc)
1310 if (recv.not_null()) recv_klass = KlassHandle(THREAD, recv->klass());
1311 KlassHandle spec_klass (THREAD, method->method_holder());
1312 Symbol* name = method->name();
1313 Symbol* signature = method->signature();
1314 CallInfo info;
1315 LinkResolver::resolve_virtual_call(info, recv, recv_klass, spec_klass, name, signature, KlassHandle(), false, true, CHECK_(methodHandle()));
1316 return info.selected_method();
1317 }
1318
1319
1320
1321 static void jni_invoke_static(JNIEnv *env, JavaValue* result, jobject receiver, JNICallType call_type, jmethodID method_id, JNI_ArgumentPusher *args, TRAPS) {
1322 methodHandle method(THREAD, Method::resolve_jmethod_id(method_id));
1323
1324 // Create object to hold arguments for the JavaCall, and associate it with
1325 // the jni parser
1326 ResourceMark rm(THREAD);
1327 int number_of_parameters = method->size_of_parameters();
1328 JavaCallArguments java_args(number_of_parameters);
1329 args->set_java_argument_object(&java_args);
1330
1331 assert(method->is_static(), "method should be static");
1332
1333 // Fill out JavaCallArguments object
1334 args->iterate( Fingerprinter(method).fingerprint() );
1335 // Initialize result type
1336 result->set_type(args->get_ret_type());
1337
1338 // Invoke the method. Result is returned as oop.
1339 JavaCalls::call(result, method, &java_args, CHECK);
1340
1341 // Convert result
1342 if (result->get_type() == T_OBJECT || result->get_type() == T_ARRAY) {
1343 result->set_jobject(JNIHandles::make_local(env, (oop) result->get_jobject()));
1344 }
1345 }
1346
1347
1348 static void jni_invoke_nonstatic(JNIEnv *env, JavaValue* result, jobject receiver, JNICallType call_type, jmethodID method_id, JNI_ArgumentPusher *args, TRAPS) {
1349 oop recv = JNIHandles::resolve(receiver);
1350 if (recv == NULL) {
1351 THROW(vmSymbols::java_lang_NullPointerException());
1352 }
1353 Handle h_recv(THREAD, recv);
1354
1355 int number_of_parameters;
1356 Method* selected_method;
1357 {
1358 Method* m = Method::resolve_jmethod_id(method_id);
1359 number_of_parameters = m->size_of_parameters();
1360 Klass* holder = m->method_holder();
1361 if (!(Klass::cast(holder))->is_interface()) {
1362 // non-interface call -- for that little speed boost, don't handlize
1363 debug_only(No_Safepoint_Verifier nosafepoint;)
1364 if (call_type == JNI_VIRTUAL) {
1365 // jni_GetMethodID makes sure class is linked and initialized
1366 // so m should have a valid vtable index.
1367 int vtbl_index = m->vtable_index();
1368 if (vtbl_index != Method::nonvirtual_vtable_index) {
1369 Klass* k = h_recv->klass();
1370 // k might be an arrayKlassOop but all vtables start at
1371 // the same place. The cast is to avoid virtual call and assertion.
1372 InstanceKlass *ik = (InstanceKlass*)k;
1373 selected_method = ik->method_at_vtable(vtbl_index);
1374 } else {
1375 // final method
1376 selected_method = m;
1377 }
1378 } else {
1379 // JNI_NONVIRTUAL call
1380 selected_method = m;
1381 }
1382 } else {
1383 // interface call
1384 KlassHandle h_holder(THREAD, holder);
1385
1386 int itbl_index = m->cached_itable_index();
1387 if (itbl_index == -1) {
1388 itbl_index = klassItable::compute_itable_index(m);
1389 m->set_cached_itable_index(itbl_index);
1390 // the above may have grabbed a lock, 'm' and anything non-handlized can't be used again
1391 }
1392 Klass* k = h_recv->klass();
1393 selected_method = InstanceKlass::cast(k)->method_at_itable(h_holder(), itbl_index, CHECK);
1394 }
1395 }
1396
1397 methodHandle method(THREAD, selected_method);
1398
1399 // Create object to hold arguments for the JavaCall, and associate it with
1400 // the jni parser
1401 ResourceMark rm(THREAD);
1402 JavaCallArguments java_args(number_of_parameters);
1403 args->set_java_argument_object(&java_args);
1404
1405 // handle arguments
1406 assert(!method->is_static(), "method should not be static");
1407 args->push_receiver(h_recv); // Push jobject handle
1408
1409 // Fill out JavaCallArguments object
1410 args->iterate( Fingerprinter(method).fingerprint() );
1411 // Initialize result type
1412 result->set_type(args->get_ret_type());
1413
1414 // Invoke the method. Result is returned as oop.
1415 JavaCalls::call(result, method, &java_args, CHECK);
1416
1417 // Convert result
1418 if (result->get_type() == T_OBJECT || result->get_type() == T_ARRAY) {
1419 result->set_jobject(JNIHandles::make_local(env, (oop) result->get_jobject()));
1420 }
1421 }
1422
1423
1424 static instanceOop alloc_object(jclass clazz, TRAPS) {
1425 KlassHandle k(THREAD, java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz)));
1426 Klass::cast(k())->check_valid_for_instantiation(false, CHECK_NULL);
1427 InstanceKlass::cast(k())->initialize(CHECK_NULL);
1428 instanceOop ih = InstanceKlass::cast(k())->allocate_instance(THREAD);
1429 return ih;
1430 }
1431
1432 #ifndef USDT2
1433 DT_RETURN_MARK_DECL(AllocObject, jobject);
1434 #else /* USDT2 */
1435 DT_RETURN_MARK_DECL(AllocObject, jobject
1436 , HOTSPOT_JNI_ALLOCOBJECT_RETURN(_ret_ref));
1437 #endif /* USDT2 */
1438
1439 JNI_ENTRY(jobject, jni_AllocObject(JNIEnv *env, jclass clazz))
1440 JNIWrapper("AllocObject");
1441
1442 #ifndef USDT2
1443 DTRACE_PROBE2(hotspot_jni, AllocObject__entry, env, clazz);
1444 #else /* USDT2 */
1445 HOTSPOT_JNI_ALLOCOBJECT_ENTRY(
1446 env, clazz);
1447 #endif /* USDT2 */
1448 jobject ret = NULL;
1449 DT_RETURN_MARK(AllocObject, jobject, (const jobject&)ret);
1450
1451 instanceOop i = alloc_object(clazz, CHECK_NULL);
1452 ret = JNIHandles::make_local(env, i);
1453 return ret;
1454 JNI_END
1455
1456 #ifndef USDT2
1457 DT_RETURN_MARK_DECL(NewObjectA, jobject);
1458 #else /* USDT2 */
1459 DT_RETURN_MARK_DECL(NewObjectA, jobject
1460 , HOTSPOT_JNI_NEWOBJECTA_RETURN(_ret_ref));
1461 #endif /* USDT2 */
1462
1463 JNI_ENTRY(jobject, jni_NewObjectA(JNIEnv *env, jclass clazz, jmethodID methodID, const jvalue *args))
1464 JNIWrapper("NewObjectA");
1465 #ifndef USDT2
1466 DTRACE_PROBE3(hotspot_jni, NewObjectA__entry, env, clazz, methodID);
1467 #else /* USDT2 */
1468 HOTSPOT_JNI_NEWOBJECTA_ENTRY(
1469 env, clazz, (uintptr_t) methodID);
1470 #endif /* USDT2 */
1471 jobject obj = NULL;
1472 DT_RETURN_MARK(NewObjectA, jobject, (const jobject)obj);
1473
1474 instanceOop i = alloc_object(clazz, CHECK_NULL);
1475 obj = JNIHandles::make_local(env, i);
1476 JavaValue jvalue(T_VOID);
1477 JNI_ArgumentPusherArray ap(methodID, args);
1478 jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK_NULL);
1479 return obj;
1480 JNI_END
1481
1482 #ifndef USDT2
1483 DT_RETURN_MARK_DECL(NewObjectV, jobject);
1484 #else /* USDT2 */
1485 DT_RETURN_MARK_DECL(NewObjectV, jobject
1486 , HOTSPOT_JNI_NEWOBJECTV_RETURN(_ret_ref));
1487 #endif /* USDT2 */
1488
1489 JNI_ENTRY(jobject, jni_NewObjectV(JNIEnv *env, jclass clazz, jmethodID methodID, va_list args))
1490 JNIWrapper("NewObjectV");
1491 #ifndef USDT2
1492 DTRACE_PROBE3(hotspot_jni, NewObjectV__entry, env, clazz, methodID);
1493 #else /* USDT2 */
1494 HOTSPOT_JNI_NEWOBJECTV_ENTRY(
1495 env, clazz, (uintptr_t) methodID);
1496 #endif /* USDT2 */
1497 jobject obj = NULL;
1498 DT_RETURN_MARK(NewObjectV, jobject, (const jobject&)obj);
1499
1500 instanceOop i = alloc_object(clazz, CHECK_NULL);
1501 obj = JNIHandles::make_local(env, i);
1502 JavaValue jvalue(T_VOID);
1503 JNI_ArgumentPusherVaArg ap(methodID, args);
1504 jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK_NULL);
1505 return obj;
1506 JNI_END
1507
1508 #ifndef USDT2
1509 DT_RETURN_MARK_DECL(NewObject, jobject);
1510 #else /* USDT2 */
1511 DT_RETURN_MARK_DECL(NewObject, jobject
1512 , HOTSPOT_JNI_NEWOBJECT_RETURN(_ret_ref));
1513 #endif /* USDT2 */
1514
1515 JNI_ENTRY(jobject, jni_NewObject(JNIEnv *env, jclass clazz, jmethodID methodID, ...))
1516 JNIWrapper("NewObject");
1517 #ifndef USDT2
1518 DTRACE_PROBE3(hotspot_jni, NewObject__entry, env, clazz, methodID);
1519 #else /* USDT2 */
1520 HOTSPOT_JNI_NEWOBJECT_ENTRY(
1521 env, clazz, (uintptr_t) methodID);
1522 #endif /* USDT2 */
1523 jobject obj = NULL;
1524 DT_RETURN_MARK(NewObject, jobject, (const jobject&)obj);
1525
1526 instanceOop i = alloc_object(clazz, CHECK_NULL);
1527 obj = JNIHandles::make_local(env, i);
1528 va_list args;
1529 va_start(args, methodID);
1530 JavaValue jvalue(T_VOID);
1531 JNI_ArgumentPusherVaArg ap(methodID, args);
1532 jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK_NULL);
1533 va_end(args);
1534 return obj;
1535 JNI_END
1536
1537
1538 JNI_ENTRY(jclass, jni_GetObjectClass(JNIEnv *env, jobject obj))
1539 JNIWrapper("GetObjectClass");
1540 #ifndef USDT2
1541 DTRACE_PROBE2(hotspot_jni, GetObjectClass__entry, env, obj);
1542 #else /* USDT2 */
1543 HOTSPOT_JNI_GETOBJECTCLASS_ENTRY(
1544 env, obj);
1545 #endif /* USDT2 */
1546 Klass* k = JNIHandles::resolve_non_null(obj)->klass();
1547 jclass ret =
1548 (jclass) JNIHandles::make_local(env, Klass::cast(k)->java_mirror());
1549 #ifndef USDT2
1550 DTRACE_PROBE1(hotspot_jni, GetObjectClass__return, ret);
1551 #else /* USDT2 */
1552 HOTSPOT_JNI_GETOBJECTCLASS_RETURN(
1553 ret);
1554 #endif /* USDT2 */
1555 return ret;
1556 JNI_END
1557
1558 JNI_QUICK_ENTRY(jboolean, jni_IsInstanceOf(JNIEnv *env, jobject obj, jclass clazz))
1559 JNIWrapper("IsInstanceOf");
1560 #ifndef USDT2
1561 DTRACE_PROBE3(hotspot_jni, IsInstanceOf__entry, env, obj, clazz);
1562 #else /* USDT2 */
1563 HOTSPOT_JNI_ISINSTANCEOF_ENTRY(
1564 env, obj, clazz);
1565 #endif /* USDT2 */
1566 jboolean ret = JNI_TRUE;
1567 if (obj != NULL) {
1568 ret = JNI_FALSE;
1569 Klass* k = java_lang_Class::as_Klass(
1570 JNIHandles::resolve_non_null(clazz));
1571 if (k != NULL) {
1572 ret = JNIHandles::resolve_non_null(obj)->is_a(k) ? JNI_TRUE : JNI_FALSE;
1573 }
1574 }
1575 #ifndef USDT2
1576 DTRACE_PROBE1(hotspot_jni, IsInstanceOf__return, ret);
1577 #else /* USDT2 */
1578 HOTSPOT_JNI_ISINSTANCEOF_RETURN(
1579 ret);
1580 #endif /* USDT2 */
1581 return ret;
1582 JNI_END
1583
1584
1585 static jmethodID get_method_id(JNIEnv *env, jclass clazz, const char *name_str,
1586 const char *sig, bool is_static, TRAPS) {
1587 // %%%% This code should probably just call into a method in the LinkResolver
1588 //
1589 // The class should have been loaded (we have an instance of the class
1590 // passed in) so the method and signature should already be in the symbol
1591 // table. If they're not there, the method doesn't exist.
1592 const char *name_to_probe = (name_str == NULL)
1593 ? vmSymbols::object_initializer_name()->as_C_string()
1594 : name_str;
1595 TempNewSymbol name = SymbolTable::probe(name_to_probe, (int)strlen(name_to_probe));
1596 TempNewSymbol signature = SymbolTable::probe(sig, (int)strlen(sig));
1597
1598 if (name == NULL || signature == NULL) {
1599 THROW_MSG_0(vmSymbols::java_lang_NoSuchMethodError(), name_str);
1600 }
1601
1602 // Throw a NoSuchMethodError exception if we have an instance of a
1603 // primitive java.lang.Class
1604 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(clazz))) {
1605 THROW_MSG_0(vmSymbols::java_lang_NoSuchMethodError(), name_str);
1606 }
1607
1608 KlassHandle klass(THREAD,
1609 java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz)));
1610
1611 // Make sure class is linked and initialized before handing id's out to
1612 // Method*s.
1613 Klass::cast(klass())->initialize(CHECK_NULL);
1614
1615 Method* m;
1616 if (name == vmSymbols::object_initializer_name() ||
1617 name == vmSymbols::class_initializer_name()) {
1618 // Never search superclasses for constructors
1619 if (klass->oop_is_instance()) {
1620 m = InstanceKlass::cast(klass())->find_method(name, signature);
1621 } else {
1622 m = NULL;
1623 }
1624 } else {
1625 m = klass->lookup_method(name, signature);
1626 // Look up interfaces
1627 if (m == NULL && klass->oop_is_instance()) {
1628 m = InstanceKlass::cast(klass())->lookup_method_in_all_interfaces(name,
1629 signature);
1630 }
1631 }
1632 if (m == NULL || (m->is_static() != is_static)) {
1633 THROW_MSG_0(vmSymbols::java_lang_NoSuchMethodError(), name_str);
1634 }
1635 return m->jmethod_id();
1636 }
1637
1638
1639 JNI_ENTRY(jmethodID, jni_GetMethodID(JNIEnv *env, jclass clazz,
1640 const char *name, const char *sig))
1641 JNIWrapper("GetMethodID");
1642 #ifndef USDT2
1643 DTRACE_PROBE4(hotspot_jni, GetMethodID__entry, env, clazz, name, sig);
1644 #else /* USDT2 */
1645 HOTSPOT_JNI_GETMETHODID_ENTRY(
1646 env, clazz, (char *) name, (char *) sig);
1647 #endif /* USDT2 */
1648 jmethodID ret = get_method_id(env, clazz, name, sig, false, thread);
1649 #ifndef USDT2
1650 DTRACE_PROBE1(hotspot_jni, GetMethodID__return, ret);
1651 #else /* USDT2 */
1652 HOTSPOT_JNI_GETMETHODID_RETURN(
1653 (uintptr_t) ret);
1654 #endif /* USDT2 */
1655 return ret;
1656 JNI_END
1657
1658
1659 JNI_ENTRY(jmethodID, jni_GetStaticMethodID(JNIEnv *env, jclass clazz,
1660 const char *name, const char *sig))
1661 JNIWrapper("GetStaticMethodID");
1662 #ifndef USDT2
1663 DTRACE_PROBE4(hotspot_jni, GetStaticMethodID__entry, env, clazz, name, sig);
1664 #else /* USDT2 */
1665 HOTSPOT_JNI_GETSTATICMETHODID_ENTRY(
1666 env, (char *) clazz, (char *) name, (char *)sig);
1667 #endif /* USDT2 */
1668 jmethodID ret = get_method_id(env, clazz, name, sig, true, thread);
1669 #ifndef USDT2
1670 DTRACE_PROBE1(hotspot_jni, GetStaticMethodID__return, ret);
1671 #else /* USDT2 */
1672 HOTSPOT_JNI_GETSTATICMETHODID_RETURN(
1673 (uintptr_t) ret);
1674 #endif /* USDT2 */
1675 return ret;
1676 JNI_END
1677
1678
1679
1680 //
1681 // Calling Methods
1682 //
1683
1684 #ifndef USDT2
1685 #define DEFINE_CALLMETHOD(ResultType, Result, Tag) \
1686 \
1687 DT_RETURN_MARK_DECL_FOR(Result, Call##Result##Method, ResultType);\
1688 DT_RETURN_MARK_DECL_FOR(Result, Call##Result##MethodV, ResultType);\
1689 DT_RETURN_MARK_DECL_FOR(Result, Call##Result##MethodA, ResultType);\
1690 \
1691 JNI_ENTRY(ResultType, \
1692 jni_Call##Result##Method(JNIEnv *env, jobject obj, jmethodID methodID, ...)) \
1693 JNIWrapper("Call" XSTR(Result) "Method"); \
1694 \
1695 DTRACE_PROBE3(hotspot_jni, Call##Result##Method__entry, env, obj, methodID); \
1696 ResultType ret = 0;\
1697 DT_RETURN_MARK_FOR(Result, Call##Result##Method, ResultType, \
1698 (const ResultType&)ret);\
1699 \
1700 va_list args; \
1701 va_start(args, methodID); \
1702 JavaValue jvalue(Tag); \
1703 JNI_ArgumentPusherVaArg ap(methodID, args); \
1704 jni_invoke_nonstatic(env, &jvalue, obj, JNI_VIRTUAL, methodID, &ap, CHECK_0); \
1705 va_end(args); \
1706 ret = jvalue.get_##ResultType(); \
1707 return ret;\
1708 JNI_END \
1709 \
1710 \
1711 JNI_ENTRY(ResultType, \
1712 jni_Call##Result##MethodV(JNIEnv *env, jobject obj, jmethodID methodID, va_list args)) \
1713 JNIWrapper("Call" XSTR(Result) "MethodV"); \
1714 \
1715 DTRACE_PROBE3(hotspot_jni, Call##Result##MethodV__entry, env, obj, methodID); \
1716 ResultType ret = 0;\
1717 DT_RETURN_MARK_FOR(Result, Call##Result##MethodV, ResultType, \
1718 (const ResultType&)ret);\
1719 \
1720 JavaValue jvalue(Tag); \
1721 JNI_ArgumentPusherVaArg ap(methodID, args); \
1722 jni_invoke_nonstatic(env, &jvalue, obj, JNI_VIRTUAL, methodID, &ap, CHECK_0); \
1723 ret = jvalue.get_##ResultType(); \
1724 return ret;\
1725 JNI_END \
1726 \
1727 \
1728 JNI_ENTRY(ResultType, \
1729 jni_Call##Result##MethodA(JNIEnv *env, jobject obj, jmethodID methodID, const jvalue *args)) \
1730 JNIWrapper("Call" XSTR(Result) "MethodA"); \
1731 DTRACE_PROBE3(hotspot_jni, Call##Result##MethodA__entry, env, obj, methodID); \
1732 ResultType ret = 0;\
1733 DT_RETURN_MARK_FOR(Result, Call##Result##MethodA, ResultType, \
1734 (const ResultType&)ret);\
1735 \
1736 JavaValue jvalue(Tag); \
1737 JNI_ArgumentPusherArray ap(methodID, args); \
1738 jni_invoke_nonstatic(env, &jvalue, obj, JNI_VIRTUAL, methodID, &ap, CHECK_0); \
1739 ret = jvalue.get_##ResultType(); \
1740 return ret;\
1741 JNI_END
1742
1743 // the runtime type of subword integral basic types is integer
1744 DEFINE_CALLMETHOD(jboolean, Boolean, T_BOOLEAN)
1745 DEFINE_CALLMETHOD(jbyte, Byte, T_BYTE)
1746 DEFINE_CALLMETHOD(jchar, Char, T_CHAR)
1747 DEFINE_CALLMETHOD(jshort, Short, T_SHORT)
1748
1749 DEFINE_CALLMETHOD(jobject, Object, T_OBJECT)
1750 DEFINE_CALLMETHOD(jint, Int, T_INT)
1751 DEFINE_CALLMETHOD(jlong, Long, T_LONG)
1752 DEFINE_CALLMETHOD(jfloat, Float, T_FLOAT)
1753 DEFINE_CALLMETHOD(jdouble, Double, T_DOUBLE)
1754
1755 DT_VOID_RETURN_MARK_DECL(CallVoidMethod);
1756 DT_VOID_RETURN_MARK_DECL(CallVoidMethodV);
1757 DT_VOID_RETURN_MARK_DECL(CallVoidMethodA);
1758
1759 #else /* USDT2 */
1760
1761 #define DEFINE_CALLMETHOD(ResultType, Result, Tag \
1762 , EntryProbe, ReturnProbe) \
1763 \
1764 DT_RETURN_MARK_DECL_FOR(Result, Call##Result##Method, ResultType \
1765 , ReturnProbe); \
1766 \
1767 JNI_ENTRY(ResultType, \
1768 jni_Call##Result##Method(JNIEnv *env, jobject obj, jmethodID methodID, ...)) \
1769 JNIWrapper("Call" XSTR(Result) "Method"); \
1770 \
1771 EntryProbe; \
1772 ResultType ret = 0;\
1773 DT_RETURN_MARK_FOR(Result, Call##Result##Method, ResultType, \
1774 (const ResultType&)ret);\
1775 \
1776 va_list args; \
1777 va_start(args, methodID); \
1778 JavaValue jvalue(Tag); \
1779 JNI_ArgumentPusherVaArg ap(methodID, args); \
1780 jni_invoke_nonstatic(env, &jvalue, obj, JNI_VIRTUAL, methodID, &ap, CHECK_0); \
1781 va_end(args); \
1782 ret = jvalue.get_##ResultType(); \
1783 return ret;\
1784 JNI_END
1785
1786 // the runtime type of subword integral basic types is integer
1787 DEFINE_CALLMETHOD(jboolean, Boolean, T_BOOLEAN
1788 , HOTSPOT_JNI_CALLBOOLEANMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1789 HOTSPOT_JNI_CALLBOOLEANMETHOD_RETURN(_ret_ref))
1790 DEFINE_CALLMETHOD(jbyte, Byte, T_BYTE
1791 , HOTSPOT_JNI_CALLBYTEMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1792 HOTSPOT_JNI_CALLBYTEMETHOD_RETURN(_ret_ref))
1793 DEFINE_CALLMETHOD(jchar, Char, T_CHAR
1794 , HOTSPOT_JNI_CALLCHARMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1795 HOTSPOT_JNI_CALLCHARMETHOD_RETURN(_ret_ref))
1796 DEFINE_CALLMETHOD(jshort, Short, T_SHORT
1797 , HOTSPOT_JNI_CALLSHORTMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1798 HOTSPOT_JNI_CALLSHORTMETHOD_RETURN(_ret_ref))
1799
1800 DEFINE_CALLMETHOD(jobject, Object, T_OBJECT
1801 , HOTSPOT_JNI_CALLOBJECTMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1802 HOTSPOT_JNI_CALLOBJECTMETHOD_RETURN(_ret_ref))
1803 DEFINE_CALLMETHOD(jint, Int, T_INT,
1804 HOTSPOT_JNI_CALLINTMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1805 HOTSPOT_JNI_CALLINTMETHOD_RETURN(_ret_ref))
1806 DEFINE_CALLMETHOD(jlong, Long, T_LONG
1807 , HOTSPOT_JNI_CALLLONGMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1808 HOTSPOT_JNI_CALLLONGMETHOD_RETURN(_ret_ref))
1809 // Float and double probes don't return value because dtrace doesn't currently support it
1810 DEFINE_CALLMETHOD(jfloat, Float, T_FLOAT
1811 , HOTSPOT_JNI_CALLFLOATMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1812 HOTSPOT_JNI_CALLFLOATMETHOD_RETURN())
1813 DEFINE_CALLMETHOD(jdouble, Double, T_DOUBLE
1814 , HOTSPOT_JNI_CALLDOUBLEMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1815 HOTSPOT_JNI_CALLDOUBLEMETHOD_RETURN())
1816
1817 #define DEFINE_CALLMETHODV(ResultType, Result, Tag \
1818 , EntryProbe, ReturnProbe) \
1819 \
1820 DT_RETURN_MARK_DECL_FOR(Result, Call##Result##MethodV, ResultType \
1821 , ReturnProbe); \
1822 \
1823 JNI_ENTRY(ResultType, \
1824 jni_Call##Result##MethodV(JNIEnv *env, jobject obj, jmethodID methodID, va_list args)) \
1825 JNIWrapper("Call" XSTR(Result) "MethodV"); \
1826 \
1827 EntryProbe;\
1828 ResultType ret = 0;\
1829 DT_RETURN_MARK_FOR(Result, Call##Result##MethodV, ResultType, \
1830 (const ResultType&)ret);\
1831 \
1832 JavaValue jvalue(Tag); \
1833 JNI_ArgumentPusherVaArg ap(methodID, args); \
1834 jni_invoke_nonstatic(env, &jvalue, obj, JNI_VIRTUAL, methodID, &ap, CHECK_0); \
1835 ret = jvalue.get_##ResultType(); \
1836 return ret;\
1837 JNI_END
1838
1839 // the runtime type of subword integral basic types is integer
1840 DEFINE_CALLMETHODV(jboolean, Boolean, T_BOOLEAN
1841 , HOTSPOT_JNI_CALLBOOLEANMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1842 HOTSPOT_JNI_CALLBOOLEANMETHOD_RETURN(_ret_ref))
1843 DEFINE_CALLMETHODV(jbyte, Byte, T_BYTE
1844 , HOTSPOT_JNI_CALLBYTEMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1845 HOTSPOT_JNI_CALLBYTEMETHOD_RETURN(_ret_ref))
1846 DEFINE_CALLMETHODV(jchar, Char, T_CHAR
1847 , HOTSPOT_JNI_CALLCHARMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1848 HOTSPOT_JNI_CALLCHARMETHOD_RETURN(_ret_ref))
1849 DEFINE_CALLMETHODV(jshort, Short, T_SHORT
1850 , HOTSPOT_JNI_CALLSHORTMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1851 HOTSPOT_JNI_CALLSHORTMETHOD_RETURN(_ret_ref))
1852
1853 DEFINE_CALLMETHODV(jobject, Object, T_OBJECT
1854 , HOTSPOT_JNI_CALLOBJECTMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1855 HOTSPOT_JNI_CALLOBJECTMETHOD_RETURN(_ret_ref))
1856 DEFINE_CALLMETHODV(jint, Int, T_INT,
1857 HOTSPOT_JNI_CALLINTMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1858 HOTSPOT_JNI_CALLINTMETHOD_RETURN(_ret_ref))
1859 DEFINE_CALLMETHODV(jlong, Long, T_LONG
1860 , HOTSPOT_JNI_CALLLONGMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1861 HOTSPOT_JNI_CALLLONGMETHOD_RETURN(_ret_ref))
1862 // Float and double probes don't return value because dtrace doesn't currently support it
1863 DEFINE_CALLMETHODV(jfloat, Float, T_FLOAT
1864 , HOTSPOT_JNI_CALLFLOATMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1865 HOTSPOT_JNI_CALLFLOATMETHOD_RETURN())
1866 DEFINE_CALLMETHODV(jdouble, Double, T_DOUBLE
1867 , HOTSPOT_JNI_CALLDOUBLEMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1868 HOTSPOT_JNI_CALLDOUBLEMETHOD_RETURN())
1869
1870 #define DEFINE_CALLMETHODA(ResultType, Result, Tag \
1871 , EntryProbe, ReturnProbe) \
1872 \
1873 DT_RETURN_MARK_DECL_FOR(Result, Call##Result##MethodA, ResultType \
1874 , ReturnProbe); \
1875 \
1876 JNI_ENTRY(ResultType, \
1877 jni_Call##Result##MethodA(JNIEnv *env, jobject obj, jmethodID methodID, const jvalue *args)) \
1878 JNIWrapper("Call" XSTR(Result) "MethodA"); \
1879 EntryProbe; \
1880 ResultType ret = 0;\
1881 DT_RETURN_MARK_FOR(Result, Call##Result##MethodA, ResultType, \
1882 (const ResultType&)ret);\
1883 \
1884 JavaValue jvalue(Tag); \
1885 JNI_ArgumentPusherArray ap(methodID, args); \
1886 jni_invoke_nonstatic(env, &jvalue, obj, JNI_VIRTUAL, methodID, &ap, CHECK_0); \
1887 ret = jvalue.get_##ResultType(); \
1888 return ret;\
1889 JNI_END
1890
1891 // the runtime type of subword integral basic types is integer
1892 DEFINE_CALLMETHODA(jboolean, Boolean, T_BOOLEAN
1893 , HOTSPOT_JNI_CALLBOOLEANMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1894 HOTSPOT_JNI_CALLBOOLEANMETHOD_RETURN(_ret_ref))
1895 DEFINE_CALLMETHODA(jbyte, Byte, T_BYTE
1896 , HOTSPOT_JNI_CALLBYTEMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1897 HOTSPOT_JNI_CALLBYTEMETHOD_RETURN(_ret_ref))
1898 DEFINE_CALLMETHODA(jchar, Char, T_CHAR
1899 , HOTSPOT_JNI_CALLCHARMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1900 HOTSPOT_JNI_CALLCHARMETHOD_RETURN(_ret_ref))
1901 DEFINE_CALLMETHODA(jshort, Short, T_SHORT
1902 , HOTSPOT_JNI_CALLSHORTMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1903 HOTSPOT_JNI_CALLSHORTMETHOD_RETURN(_ret_ref))
1904
1905 DEFINE_CALLMETHODA(jobject, Object, T_OBJECT
1906 , HOTSPOT_JNI_CALLOBJECTMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1907 HOTSPOT_JNI_CALLOBJECTMETHOD_RETURN(_ret_ref))
1908 DEFINE_CALLMETHODA(jint, Int, T_INT,
1909 HOTSPOT_JNI_CALLINTMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1910 HOTSPOT_JNI_CALLINTMETHOD_RETURN(_ret_ref))
1911 DEFINE_CALLMETHODA(jlong, Long, T_LONG
1912 , HOTSPOT_JNI_CALLLONGMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1913 HOTSPOT_JNI_CALLLONGMETHOD_RETURN(_ret_ref))
1914 // Float and double probes don't return value because dtrace doesn't currently support it
1915 DEFINE_CALLMETHODA(jfloat, Float, T_FLOAT
1916 , HOTSPOT_JNI_CALLFLOATMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1917 HOTSPOT_JNI_CALLFLOATMETHOD_RETURN())
1918 DEFINE_CALLMETHODA(jdouble, Double, T_DOUBLE
1919 , HOTSPOT_JNI_CALLDOUBLEMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1920 HOTSPOT_JNI_CALLDOUBLEMETHOD_RETURN())
1921
1922 DT_VOID_RETURN_MARK_DECL(CallVoidMethod, HOTSPOT_JNI_CALLVOIDMETHOD_RETURN());
1923 DT_VOID_RETURN_MARK_DECL(CallVoidMethodV, HOTSPOT_JNI_CALLVOIDMETHODV_RETURN());
1924 DT_VOID_RETURN_MARK_DECL(CallVoidMethodA, HOTSPOT_JNI_CALLVOIDMETHODA_RETURN());
1925
1926 #endif /* USDT2 */
1927
1928 JNI_ENTRY(void, jni_CallVoidMethod(JNIEnv *env, jobject obj, jmethodID methodID, ...))
1929 JNIWrapper("CallVoidMethod");
1930 #ifndef USDT2
1931 DTRACE_PROBE3(hotspot_jni, CallVoidMethod__entry, env, obj, methodID);
1932 #else /* USDT2 */
1933 HOTSPOT_JNI_CALLVOIDMETHOD_ENTRY(
1934 env, obj, (uintptr_t) methodID);
1935 #endif /* USDT2 */
1936 DT_VOID_RETURN_MARK(CallVoidMethod);
1937
1938 va_list args;
1939 va_start(args, methodID);
1940 JavaValue jvalue(T_VOID);
1941 JNI_ArgumentPusherVaArg ap(methodID, args);
1942 jni_invoke_nonstatic(env, &jvalue, obj, JNI_VIRTUAL, methodID, &ap, CHECK);
1943 va_end(args);
1944 JNI_END
1945
1946
1947 JNI_ENTRY(void, jni_CallVoidMethodV(JNIEnv *env, jobject obj, jmethodID methodID, va_list args))
1948 JNIWrapper("CallVoidMethodV");
1949 #ifndef USDT2
1950 DTRACE_PROBE3(hotspot_jni, CallVoidMethodV__entry, env, obj, methodID);
1951 #else /* USDT2 */
1952 HOTSPOT_JNI_CALLVOIDMETHODV_ENTRY(
1953 env, obj, (uintptr_t) methodID);
1954 #endif /* USDT2 */
1955 DT_VOID_RETURN_MARK(CallVoidMethodV);
1956
1957 JavaValue jvalue(T_VOID);
1958 JNI_ArgumentPusherVaArg ap(methodID, args);
1959 jni_invoke_nonstatic(env, &jvalue, obj, JNI_VIRTUAL, methodID, &ap, CHECK);
1960 JNI_END
1961
1962
1963 JNI_ENTRY(void, jni_CallVoidMethodA(JNIEnv *env, jobject obj, jmethodID methodID, const jvalue *args))
1964 JNIWrapper("CallVoidMethodA");
1965 #ifndef USDT2
1966 DTRACE_PROBE3(hotspot_jni, CallVoidMethodA__entry, env, obj, methodID);
1967 #else /* USDT2 */
1968 HOTSPOT_JNI_CALLVOIDMETHODA_ENTRY(
1969 env, obj, (uintptr_t) methodID);
1970 #endif /* USDT2 */
1971 DT_VOID_RETURN_MARK(CallVoidMethodA);
1972
1973 JavaValue jvalue(T_VOID);
1974 JNI_ArgumentPusherArray ap(methodID, args);
1975 jni_invoke_nonstatic(env, &jvalue, obj, JNI_VIRTUAL, methodID, &ap, CHECK);
1976 JNI_END
1977
1978
1979 #ifndef USDT2
1980 #define DEFINE_CALLNONVIRTUALMETHOD(ResultType, Result, Tag) \
1981 \
1982 DT_RETURN_MARK_DECL_FOR(Result, CallNonvirtual##Result##Method, ResultType);\
1983 DT_RETURN_MARK_DECL_FOR(Result, CallNonvirtual##Result##MethodV, ResultType);\
1984 DT_RETURN_MARK_DECL_FOR(Result, CallNonvirtual##Result##MethodA, ResultType);\
1985 \
1986 JNI_ENTRY(ResultType, \
1987 jni_CallNonvirtual##Result##Method(JNIEnv *env, jobject obj, jclass cls, jmethodID methodID, ...)) \
1988 JNIWrapper("CallNonvitual" XSTR(Result) "Method"); \
1989 \
1990 DTRACE_PROBE4(hotspot_jni, CallNonvirtual##Result##Method__entry, env, obj, cls, methodID);\
1991 ResultType ret;\
1992 DT_RETURN_MARK_FOR(Result, CallNonvirtual##Result##Method, ResultType, \
1993 (const ResultType&)ret);\
1994 \
1995 va_list args; \
1996 va_start(args, methodID); \
1997 JavaValue jvalue(Tag); \
1998 JNI_ArgumentPusherVaArg ap(methodID, args); \
1999 jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK_0); \
2000 va_end(args); \
2001 ret = jvalue.get_##ResultType(); \
2002 return ret;\
2003 JNI_END \
2004 \
2005 JNI_ENTRY(ResultType, \
2006 jni_CallNonvirtual##Result##MethodV(JNIEnv *env, jobject obj, jclass cls, jmethodID methodID, va_list args)) \
2007 JNIWrapper("CallNonvitual" XSTR(Result) "#MethodV"); \
2008 DTRACE_PROBE4(hotspot_jni, CallNonvirtual##Result##MethodV__entry, env, obj, cls, methodID);\
2009 ResultType ret;\
2010 DT_RETURN_MARK_FOR(Result, CallNonvirtual##Result##MethodV, ResultType, \
2011 (const ResultType&)ret);\
2012 \
2013 JavaValue jvalue(Tag); \
2014 JNI_ArgumentPusherVaArg ap(methodID, args); \
2015 jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK_0); \
2016 ret = jvalue.get_##ResultType(); \
2017 return ret;\
2018 JNI_END \
2019 \
2020 JNI_ENTRY(ResultType, \
2021 jni_CallNonvirtual##Result##MethodA(JNIEnv *env, jobject obj, jclass cls, jmethodID methodID, const jvalue *args)) \
2022 JNIWrapper("CallNonvitual" XSTR(Result) "MethodA"); \
2023 DTRACE_PROBE4(hotspot_jni, CallNonvirtual##Result##MethodA__entry, env, obj, cls, methodID);\
2024 ResultType ret;\
2025 DT_RETURN_MARK_FOR(Result, CallNonvirtual##Result##MethodA, ResultType, \
2026 (const ResultType&)ret);\
2027 \
2028 JavaValue jvalue(Tag); \
2029 JNI_ArgumentPusherArray ap(methodID, args); \
2030 jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK_0); \
2031 ret = jvalue.get_##ResultType(); \
2032 return ret;\
2033 JNI_END
2034
2035 // the runtime type of subword integral basic types is integer
2036 DEFINE_CALLNONVIRTUALMETHOD(jboolean, Boolean, T_BOOLEAN)
2037 DEFINE_CALLNONVIRTUALMETHOD(jbyte, Byte, T_BYTE)
2038 DEFINE_CALLNONVIRTUALMETHOD(jchar, Char, T_CHAR)
2039 DEFINE_CALLNONVIRTUALMETHOD(jshort, Short, T_SHORT)
2040
2041 DEFINE_CALLNONVIRTUALMETHOD(jobject, Object, T_OBJECT)
2042 DEFINE_CALLNONVIRTUALMETHOD(jint, Int, T_INT)
2043 DEFINE_CALLNONVIRTUALMETHOD(jlong, Long, T_LONG)
2044 DEFINE_CALLNONVIRTUALMETHOD(jfloat, Float, T_FLOAT)
2045 DEFINE_CALLNONVIRTUALMETHOD(jdouble, Double, T_DOUBLE)
2046
2047
2048 DT_VOID_RETURN_MARK_DECL(CallNonvirtualVoidMethod);
2049 DT_VOID_RETURN_MARK_DECL(CallNonvirtualVoidMethodV);
2050 DT_VOID_RETURN_MARK_DECL(CallNonvirtualVoidMethodA);
2051
2052 #else /* USDT2 */
2053
2054 #define DEFINE_CALLNONVIRTUALMETHOD(ResultType, Result, Tag \
2055 , EntryProbe, ReturnProbe) \
2056 \
2057 DT_RETURN_MARK_DECL_FOR(Result, CallNonvirtual##Result##Method, ResultType \
2058 , ReturnProbe);\
2059 \
2060 JNI_ENTRY(ResultType, \
2061 jni_CallNonvirtual##Result##Method(JNIEnv *env, jobject obj, jclass cls, jmethodID methodID, ...)) \
2062 JNIWrapper("CallNonvitual" XSTR(Result) "Method"); \
2063 \
2064 EntryProbe;\
2065 ResultType ret;\
2066 DT_RETURN_MARK_FOR(Result, CallNonvirtual##Result##Method, ResultType, \
2067 (const ResultType&)ret);\
2068 \
2069 va_list args; \
2070 va_start(args, methodID); \
2071 JavaValue jvalue(Tag); \
2072 JNI_ArgumentPusherVaArg ap(methodID, args); \
2073 jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK_0); \
2074 va_end(args); \
2075 ret = jvalue.get_##ResultType(); \
2076 return ret;\
2077 JNI_END
2078
2079 // the runtime type of subword integral basic types is integer
2080 DEFINE_CALLNONVIRTUALMETHOD(jboolean, Boolean, T_BOOLEAN
2081 , HOTSPOT_JNI_CALLNONVIRTUALBOOLEANMETHOD_ENTRY(env, obj, cls, (uintptr_t)methodID),
2082 HOTSPOT_JNI_CALLNONVIRTUALBOOLEANMETHOD_RETURN(_ret_ref))
2083 DEFINE_CALLNONVIRTUALMETHOD(jbyte, Byte, T_BYTE
2084 , HOTSPOT_JNI_CALLNONVIRTUALBYTEMETHOD_ENTRY(env, obj, cls, (uintptr_t)methodID),
2085 HOTSPOT_JNI_CALLNONVIRTUALBYTEMETHOD_RETURN(_ret_ref))
2086 DEFINE_CALLNONVIRTUALMETHOD(jchar, Char, T_CHAR
2087 , HOTSPOT_JNI_CALLNONVIRTUALCHARMETHOD_ENTRY(env, obj, cls, (uintptr_t)methodID),
2088 HOTSPOT_JNI_CALLNONVIRTUALCHARMETHOD_RETURN(_ret_ref))
2089 DEFINE_CALLNONVIRTUALMETHOD(jshort, Short, T_SHORT
2090 , HOTSPOT_JNI_CALLNONVIRTUALSHORTMETHOD_ENTRY(env, obj, cls, (uintptr_t)methodID),
2091 HOTSPOT_JNI_CALLNONVIRTUALSHORTMETHOD_RETURN(_ret_ref))
2092
2093 DEFINE_CALLNONVIRTUALMETHOD(jobject, Object, T_OBJECT
2094 , HOTSPOT_JNI_CALLNONVIRTUALOBJECTMETHOD_ENTRY(env, obj, cls, (uintptr_t)methodID),
2095 HOTSPOT_JNI_CALLNONVIRTUALOBJECTMETHOD_RETURN(_ret_ref))
2096 DEFINE_CALLNONVIRTUALMETHOD(jint, Int, T_INT
2097 , HOTSPOT_JNI_CALLNONVIRTUALINTMETHOD_ENTRY(env, obj, cls, (uintptr_t)methodID),
2098 HOTSPOT_JNI_CALLNONVIRTUALINTMETHOD_RETURN(_ret_ref))
2099 DEFINE_CALLNONVIRTUALMETHOD(jlong, Long, T_LONG
2100 , HOTSPOT_JNI_CALLNONVIRTUALLONGMETHOD_ENTRY(env, obj, cls, (uintptr_t)methodID),
2101 // Float and double probes don't return value because dtrace doesn't currently support it
2102 HOTSPOT_JNI_CALLNONVIRTUALLONGMETHOD_RETURN(_ret_ref))
2103 DEFINE_CALLNONVIRTUALMETHOD(jfloat, Float, T_FLOAT
2104 , HOTSPOT_JNI_CALLNONVIRTUALFLOATMETHOD_ENTRY(env, obj, cls, (uintptr_t)methodID),
2105 HOTSPOT_JNI_CALLNONVIRTUALFLOATMETHOD_RETURN())
2106 DEFINE_CALLNONVIRTUALMETHOD(jdouble, Double, T_DOUBLE
2107 , HOTSPOT_JNI_CALLNONVIRTUALDOUBLEMETHOD_ENTRY(env, obj, cls, (uintptr_t)methodID),
2108 HOTSPOT_JNI_CALLNONVIRTUALDOUBLEMETHOD_RETURN())
2109
2110 #define DEFINE_CALLNONVIRTUALMETHODV(ResultType, Result, Tag \
2111 , EntryProbe, ReturnProbe) \
2112 \
2113 DT_RETURN_MARK_DECL_FOR(Result, CallNonvirtual##Result##MethodV, ResultType \
2114 , ReturnProbe);\
2115 \
2116 JNI_ENTRY(ResultType, \
2117 jni_CallNonvirtual##Result##MethodV(JNIEnv *env, jobject obj, jclass cls, jmethodID methodID, va_list args)) \
2118 JNIWrapper("CallNonvitual" XSTR(Result) "MethodV"); \
2119 \
2120 EntryProbe;\
2121 ResultType ret;\
2122 DT_RETURN_MARK_FOR(Result, CallNonvirtual##Result##MethodV, ResultType, \
2123 (const ResultType&)ret);\
2124 \
2125 JavaValue jvalue(Tag); \
2126 JNI_ArgumentPusherVaArg ap(methodID, args); \
2127 jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK_0); \
2128 ret = jvalue.get_##ResultType(); \
2129 return ret;\
2130 JNI_END
2131
2132 // the runtime type of subword integral basic types is integer
2133 DEFINE_CALLNONVIRTUALMETHODV(jboolean, Boolean, T_BOOLEAN
2134 , HOTSPOT_JNI_CALLNONVIRTUALBOOLEANMETHODV_ENTRY(env, obj, cls, (uintptr_t)methodID),
2135 HOTSPOT_JNI_CALLNONVIRTUALBOOLEANMETHODV_RETURN(_ret_ref))
2136 DEFINE_CALLNONVIRTUALMETHODV(jbyte, Byte, T_BYTE
2137 , HOTSPOT_JNI_CALLNONVIRTUALBYTEMETHODV_ENTRY(env, obj, cls, (uintptr_t)methodID),
2138 HOTSPOT_JNI_CALLNONVIRTUALBYTEMETHODV_RETURN(_ret_ref))
2139 DEFINE_CALLNONVIRTUALMETHODV(jchar, Char, T_CHAR
2140 , HOTSPOT_JNI_CALLNONVIRTUALCHARMETHODV_ENTRY(env, obj, cls, (uintptr_t)methodID),
2141 HOTSPOT_JNI_CALLNONVIRTUALCHARMETHODV_RETURN(_ret_ref))
2142 DEFINE_CALLNONVIRTUALMETHODV(jshort, Short, T_SHORT
2143 , HOTSPOT_JNI_CALLNONVIRTUALSHORTMETHODV_ENTRY(env, obj, cls, (uintptr_t)methodID),
2144 HOTSPOT_JNI_CALLNONVIRTUALSHORTMETHODV_RETURN(_ret_ref))
2145
2146 DEFINE_CALLNONVIRTUALMETHODV(jobject, Object, T_OBJECT
2147 , HOTSPOT_JNI_CALLNONVIRTUALOBJECTMETHODV_ENTRY(env, obj, cls, (uintptr_t)methodID),
2148 HOTSPOT_JNI_CALLNONVIRTUALOBJECTMETHODV_RETURN(_ret_ref))
2149 DEFINE_CALLNONVIRTUALMETHODV(jint, Int, T_INT
2150 , HOTSPOT_JNI_CALLNONVIRTUALINTMETHODV_ENTRY(env, obj, cls, (uintptr_t)methodID),
2151 HOTSPOT_JNI_CALLNONVIRTUALINTMETHODV_RETURN(_ret_ref))
2152 DEFINE_CALLNONVIRTUALMETHODV(jlong, Long, T_LONG
2153 , HOTSPOT_JNI_CALLNONVIRTUALLONGMETHODV_ENTRY(env, obj, cls, (uintptr_t)methodID),
2154 // Float and double probes don't return value because dtrace doesn't currently support it
2155 HOTSPOT_JNI_CALLNONVIRTUALLONGMETHODV_RETURN(_ret_ref))
2156 DEFINE_CALLNONVIRTUALMETHODV(jfloat, Float, T_FLOAT
2157 , HOTSPOT_JNI_CALLNONVIRTUALFLOATMETHODV_ENTRY(env, obj, cls, (uintptr_t)methodID),
2158 HOTSPOT_JNI_CALLNONVIRTUALFLOATMETHODV_RETURN())
2159 DEFINE_CALLNONVIRTUALMETHODV(jdouble, Double, T_DOUBLE
2160 , HOTSPOT_JNI_CALLNONVIRTUALDOUBLEMETHODV_ENTRY(env, obj, cls, (uintptr_t)methodID),
2161 HOTSPOT_JNI_CALLNONVIRTUALDOUBLEMETHODV_RETURN())
2162
2163 #define DEFINE_CALLNONVIRTUALMETHODA(ResultType, Result, Tag \
2164 , EntryProbe, ReturnProbe) \
2165 \
2166 DT_RETURN_MARK_DECL_FOR(Result, CallNonvirtual##Result##MethodA, ResultType \
2167 , ReturnProbe);\
2168 \
2169 JNI_ENTRY(ResultType, \
2170 jni_CallNonvirtual##Result##MethodA(JNIEnv *env, jobject obj, jclass cls, jmethodID methodID, const jvalue *args)) \
2171 JNIWrapper("CallNonvitual" XSTR(Result) "MethodA"); \
2172 \
2173 EntryProbe;\
2174 ResultType ret;\
2175 DT_RETURN_MARK_FOR(Result, CallNonvirtual##Result##MethodA, ResultType, \
2176 (const ResultType&)ret);\
2177 \
2178 JavaValue jvalue(Tag); \
2179 JNI_ArgumentPusherArray ap(methodID, args); \
2180 jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK_0); \
2181 ret = jvalue.get_##ResultType(); \
2182 return ret;\
2183 JNI_END
2184
2185 // the runtime type of subword integral basic types is integer
2186 DEFINE_CALLNONVIRTUALMETHODA(jboolean, Boolean, T_BOOLEAN
2187 , HOTSPOT_JNI_CALLNONVIRTUALBOOLEANMETHODA_ENTRY(env, obj, cls, (uintptr_t)methodID),
2188 HOTSPOT_JNI_CALLNONVIRTUALBOOLEANMETHODA_RETURN(_ret_ref))
2189 DEFINE_CALLNONVIRTUALMETHODA(jbyte, Byte, T_BYTE
2190 , HOTSPOT_JNI_CALLNONVIRTUALBYTEMETHODA_ENTRY(env, obj, cls, (uintptr_t)methodID),
2191 HOTSPOT_JNI_CALLNONVIRTUALBYTEMETHODA_RETURN(_ret_ref))
2192 DEFINE_CALLNONVIRTUALMETHODA(jchar, Char, T_CHAR
2193 , HOTSPOT_JNI_CALLNONVIRTUALCHARMETHODA_ENTRY(env, obj, cls, (uintptr_t)methodID),
2194 HOTSPOT_JNI_CALLNONVIRTUALCHARMETHODA_RETURN(_ret_ref))
2195 DEFINE_CALLNONVIRTUALMETHODA(jshort, Short, T_SHORT
2196 , HOTSPOT_JNI_CALLNONVIRTUALSHORTMETHODA_ENTRY(env, obj, cls, (uintptr_t)methodID),
2197 HOTSPOT_JNI_CALLNONVIRTUALSHORTMETHODA_RETURN(_ret_ref))
2198
2199 DEFINE_CALLNONVIRTUALMETHODA(jobject, Object, T_OBJECT
2200 , HOTSPOT_JNI_CALLNONVIRTUALOBJECTMETHODA_ENTRY(env, obj, cls, (uintptr_t)methodID),
2201 HOTSPOT_JNI_CALLNONVIRTUALOBJECTMETHODA_RETURN(_ret_ref))
2202 DEFINE_CALLNONVIRTUALMETHODA(jint, Int, T_INT
2203 , HOTSPOT_JNI_CALLNONVIRTUALINTMETHODA_ENTRY(env, obj, cls, (uintptr_t)methodID),
2204 HOTSPOT_JNI_CALLNONVIRTUALINTMETHODA_RETURN(_ret_ref))
2205 DEFINE_CALLNONVIRTUALMETHODA(jlong, Long, T_LONG
2206 , HOTSPOT_JNI_CALLNONVIRTUALLONGMETHODA_ENTRY(env, obj, cls, (uintptr_t)methodID),
2207 // Float and double probes don't return value because dtrace doesn't currently support it
2208 HOTSPOT_JNI_CALLNONVIRTUALLONGMETHODA_RETURN(_ret_ref))
2209 DEFINE_CALLNONVIRTUALMETHODA(jfloat, Float, T_FLOAT
2210 , HOTSPOT_JNI_CALLNONVIRTUALFLOATMETHODA_ENTRY(env, obj, cls, (uintptr_t)methodID),
2211 HOTSPOT_JNI_CALLNONVIRTUALFLOATMETHODA_RETURN())
2212 DEFINE_CALLNONVIRTUALMETHODA(jdouble, Double, T_DOUBLE
2213 , HOTSPOT_JNI_CALLNONVIRTUALDOUBLEMETHODA_ENTRY(env, obj, cls, (uintptr_t)methodID),
2214 HOTSPOT_JNI_CALLNONVIRTUALDOUBLEMETHODA_RETURN())
2215
2216 DT_VOID_RETURN_MARK_DECL(CallNonvirtualVoidMethod
2217 , HOTSPOT_JNI_CALLNONVIRTUALVOIDMETHOD_RETURN());
2218 DT_VOID_RETURN_MARK_DECL(CallNonvirtualVoidMethodV
2219 , HOTSPOT_JNI_CALLNONVIRTUALVOIDMETHODV_RETURN());
2220 DT_VOID_RETURN_MARK_DECL(CallNonvirtualVoidMethodA
2221 , HOTSPOT_JNI_CALLNONVIRTUALVOIDMETHODA_RETURN());
2222 #endif /* USDT2 */
2223
2224 JNI_ENTRY(void, jni_CallNonvirtualVoidMethod(JNIEnv *env, jobject obj, jclass cls, jmethodID methodID, ...))
2225 JNIWrapper("CallNonvirtualVoidMethod");
2226
2227 #ifndef USDT2
2228 DTRACE_PROBE4(hotspot_jni, CallNonvirtualVoidMethod__entry,
2229 env, obj, cls, methodID);
2230 #else /* USDT2 */
2231 HOTSPOT_JNI_CALLNONVIRTUALVOIDMETHOD_ENTRY(
2232 env, obj, cls, (uintptr_t) methodID);
2233 #endif /* USDT2 */
2234 DT_VOID_RETURN_MARK(CallNonvirtualVoidMethod);
2235
2236 va_list args;
2237 va_start(args, methodID);
2238 JavaValue jvalue(T_VOID);
2239 JNI_ArgumentPusherVaArg ap(methodID, args);
2240 jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK);
2241 va_end(args);
2242 JNI_END
2243
2244
2245 JNI_ENTRY(void, jni_CallNonvirtualVoidMethodV(JNIEnv *env, jobject obj, jclass cls, jmethodID methodID, va_list args))
2246 JNIWrapper("CallNonvirtualVoidMethodV");
2247
2248 #ifndef USDT2
2249 DTRACE_PROBE4(hotspot_jni, CallNonvirtualVoidMethodV__entry,
2250 env, obj, cls, methodID);
2251 #else /* USDT2 */
2252 HOTSPOT_JNI_CALLNONVIRTUALVOIDMETHODV_ENTRY(
2253 env, obj, cls, (uintptr_t) methodID);
2254 #endif /* USDT2 */
2255 DT_VOID_RETURN_MARK(CallNonvirtualVoidMethodV);
2256
2257 JavaValue jvalue(T_VOID);
2258 JNI_ArgumentPusherVaArg ap(methodID, args);
2259 jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK);
2260 JNI_END
2261
2262
2263 JNI_ENTRY(void, jni_CallNonvirtualVoidMethodA(JNIEnv *env, jobject obj, jclass cls, jmethodID methodID, const jvalue *args))
2264 JNIWrapper("CallNonvirtualVoidMethodA");
2265 #ifndef USDT2
2266 DTRACE_PROBE4(hotspot_jni, CallNonvirtualVoidMethodA__entry,
2267 env, obj, cls, methodID);
2268 #else /* USDT2 */
2269 HOTSPOT_JNI_CALLNONVIRTUALVOIDMETHODA_ENTRY(
2270 env, obj, cls, (uintptr_t) methodID);
2271 #endif /* USDT2 */
2272 DT_VOID_RETURN_MARK(CallNonvirtualVoidMethodA);
2273 JavaValue jvalue(T_VOID);
2274 JNI_ArgumentPusherArray ap(methodID, args);
2275 jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK);
2276 JNI_END
2277
2278
2279 #ifndef USDT2
2280 #define DEFINE_CALLSTATICMETHOD(ResultType, Result, Tag) \
2281 \
2282 DT_RETURN_MARK_DECL_FOR(Result, CallStatic##Result##Method, ResultType);\
2283 DT_RETURN_MARK_DECL_FOR(Result, CallStatic##Result##MethodV, ResultType);\
2284 DT_RETURN_MARK_DECL_FOR(Result, CallStatic##Result##MethodA, ResultType);\
2285 \
2286 JNI_ENTRY(ResultType, \
2287 jni_CallStatic##Result##Method(JNIEnv *env, jclass cls, jmethodID methodID, ...)) \
2288 JNIWrapper("CallStatic" XSTR(Result) "Method"); \
2289 \
2290 DTRACE_PROBE3(hotspot_jni, CallStatic##Result##Method__entry, env, cls, methodID);\
2291 ResultType ret = 0;\
2292 DT_RETURN_MARK_FOR(Result, CallStatic##Result##Method, ResultType, \
2293 (const ResultType&)ret);\
2294 \
2295 va_list args; \
2296 va_start(args, methodID); \
2297 JavaValue jvalue(Tag); \
2298 JNI_ArgumentPusherVaArg ap(methodID, args); \
2299 jni_invoke_static(env, &jvalue, NULL, JNI_STATIC, methodID, &ap, CHECK_0); \
2300 va_end(args); \
2301 ret = jvalue.get_##ResultType(); \
2302 return ret;\
2303 JNI_END \
2304 \
2305 JNI_ENTRY(ResultType, \
2306 jni_CallStatic##Result##MethodV(JNIEnv *env, jclass cls, jmethodID methodID, va_list args)) \
2307 JNIWrapper("CallStatic" XSTR(Result) "MethodV"); \
2308 DTRACE_PROBE3(hotspot_jni, CallStatic##Result##MethodV__entry, env, cls, methodID);\
2309 ResultType ret = 0;\
2310 DT_RETURN_MARK_FOR(Result, CallStatic##Result##MethodV, ResultType, \
2311 (const ResultType&)ret);\
2312 \
2313 JavaValue jvalue(Tag); \
2314 JNI_ArgumentPusherVaArg ap(methodID, args); \
2315 jni_invoke_static(env, &jvalue, NULL, JNI_STATIC, methodID, &ap, CHECK_0); \
2316 ret = jvalue.get_##ResultType(); \
2317 return ret;\
2318 JNI_END \
2319 \
2320 JNI_ENTRY(ResultType, \
2321 jni_CallStatic##Result##MethodA(JNIEnv *env, jclass cls, jmethodID methodID, const jvalue *args)) \
2322 JNIWrapper("CallStatic" XSTR(Result) "MethodA"); \
2323 DTRACE_PROBE3(hotspot_jni, CallStatic##Result##MethodA__entry, env, cls, methodID);\
2324 ResultType ret = 0;\
2325 DT_RETURN_MARK_FOR(Result, CallStatic##Result##MethodA, ResultType, \
2326 (const ResultType&)ret);\
2327 \
2328 JavaValue jvalue(Tag); \
2329 JNI_ArgumentPusherArray ap(methodID, args); \
2330 jni_invoke_static(env, &jvalue, NULL, JNI_STATIC, methodID, &ap, CHECK_0); \
2331 ret = jvalue.get_##ResultType(); \
2332 return ret;\
2333 JNI_END
2334
2335 // the runtime type of subword integral basic types is integer
2336 DEFINE_CALLSTATICMETHOD(jboolean, Boolean, T_BOOLEAN)
2337 DEFINE_CALLSTATICMETHOD(jbyte, Byte, T_BYTE)
2338 DEFINE_CALLSTATICMETHOD(jchar, Char, T_CHAR)
2339 DEFINE_CALLSTATICMETHOD(jshort, Short, T_SHORT)
2340
2341 DEFINE_CALLSTATICMETHOD(jobject, Object, T_OBJECT)
2342 DEFINE_CALLSTATICMETHOD(jint, Int, T_INT)
2343 DEFINE_CALLSTATICMETHOD(jlong, Long, T_LONG)
2344 DEFINE_CALLSTATICMETHOD(jfloat, Float, T_FLOAT)
2345 DEFINE_CALLSTATICMETHOD(jdouble, Double, T_DOUBLE)
2346
2347
2348 DT_VOID_RETURN_MARK_DECL(CallStaticVoidMethod);
2349 DT_VOID_RETURN_MARK_DECL(CallStaticVoidMethodV);
2350 DT_VOID_RETURN_MARK_DECL(CallStaticVoidMethodA);
2351
2352 #else /* USDT2 */
2353
2354 #define DEFINE_CALLSTATICMETHOD(ResultType, Result, Tag \
2355 , EntryProbe, ResultProbe) \
2356 \
2357 DT_RETURN_MARK_DECL_FOR(Result, CallStatic##Result##Method, ResultType \
2358 , ResultProbe); \
2359 \
2360 JNI_ENTRY(ResultType, \
2361 jni_CallStatic##Result##Method(JNIEnv *env, jclass cls, jmethodID methodID, ...)) \
2362 JNIWrapper("CallStatic" XSTR(Result) "Method"); \
2363 \
2364 EntryProbe; \
2365 ResultType ret = 0;\
2366 DT_RETURN_MARK_FOR(Result, CallStatic##Result##Method, ResultType, \
2367 (const ResultType&)ret);\
2368 \
2369 va_list args; \
2370 va_start(args, methodID); \
2371 JavaValue jvalue(Tag); \
2372 JNI_ArgumentPusherVaArg ap(methodID, args); \
2373 jni_invoke_static(env, &jvalue, NULL, JNI_STATIC, methodID, &ap, CHECK_0); \
2374 va_end(args); \
2375 ret = jvalue.get_##ResultType(); \
2376 return ret;\
2377 JNI_END
2378
2379 // the runtime type of subword integral basic types is integer
2380 DEFINE_CALLSTATICMETHOD(jboolean, Boolean, T_BOOLEAN
2381 , HOTSPOT_JNI_CALLSTATICBOOLEANMETHOD_ENTRY(env, cls, (uintptr_t)methodID),
2382 HOTSPOT_JNI_CALLSTATICBOOLEANMETHOD_RETURN(_ret_ref));
2383 DEFINE_CALLSTATICMETHOD(jbyte, Byte, T_BYTE
2384 , HOTSPOT_JNI_CALLSTATICBYTEMETHOD_ENTRY(env, cls, (uintptr_t)methodID),
2385 HOTSPOT_JNI_CALLSTATICBYTEMETHOD_RETURN(_ret_ref));
2386 DEFINE_CALLSTATICMETHOD(jchar, Char, T_CHAR
2387 , HOTSPOT_JNI_CALLSTATICCHARMETHOD_ENTRY(env, cls, (uintptr_t)methodID),
2388 HOTSPOT_JNI_CALLSTATICCHARMETHOD_RETURN(_ret_ref));
2389 DEFINE_CALLSTATICMETHOD(jshort, Short, T_SHORT
2390 , HOTSPOT_JNI_CALLSTATICSHORTMETHOD_ENTRY(env, cls, (uintptr_t)methodID),
2391 HOTSPOT_JNI_CALLSTATICSHORTMETHOD_RETURN(_ret_ref));
2392
2393 DEFINE_CALLSTATICMETHOD(jobject, Object, T_OBJECT
2394 , HOTSPOT_JNI_CALLSTATICOBJECTMETHOD_ENTRY(env, cls, (uintptr_t)methodID),
2395 HOTSPOT_JNI_CALLSTATICOBJECTMETHOD_RETURN(_ret_ref));
2396 DEFINE_CALLSTATICMETHOD(jint, Int, T_INT
2397 , HOTSPOT_JNI_CALLSTATICINTMETHOD_ENTRY(env, cls, (uintptr_t)methodID),
2398 HOTSPOT_JNI_CALLSTATICINTMETHOD_RETURN(_ret_ref));
2399 DEFINE_CALLSTATICMETHOD(jlong, Long, T_LONG
2400 , HOTSPOT_JNI_CALLSTATICLONGMETHOD_ENTRY(env, cls, (uintptr_t)methodID),
2401 HOTSPOT_JNI_CALLSTATICLONGMETHOD_RETURN(_ret_ref));
2402 // Float and double probes don't return value because dtrace doesn't currently support it
2403 DEFINE_CALLSTATICMETHOD(jfloat, Float, T_FLOAT
2404 , HOTSPOT_JNI_CALLSTATICFLOATMETHOD_ENTRY(env, cls, (uintptr_t)methodID),
2405 HOTSPOT_JNI_CALLSTATICFLOATMETHOD_RETURN());
2406 DEFINE_CALLSTATICMETHOD(jdouble, Double, T_DOUBLE
2407 , HOTSPOT_JNI_CALLSTATICDOUBLEMETHOD_ENTRY(env, cls, (uintptr_t)methodID),
2408 HOTSPOT_JNI_CALLSTATICDOUBLEMETHOD_RETURN());
2409
2410 #define DEFINE_CALLSTATICMETHODV(ResultType, Result, Tag \
2411 , EntryProbe, ResultProbe) \
2412 \
2413 DT_RETURN_MARK_DECL_FOR(Result, CallStatic##Result##MethodV, ResultType \
2414 , ResultProbe); \
2415 \
2416 JNI_ENTRY(ResultType, \
2417 jni_CallStatic##Result##MethodV(JNIEnv *env, jclass cls, jmethodID methodID, va_list args)) \
2418 JNIWrapper("CallStatic" XSTR(Result) "MethodV"); \
2419 \
2420 EntryProbe; \
2421 ResultType ret = 0;\
2422 DT_RETURN_MARK_FOR(Result, CallStatic##Result##MethodV, ResultType, \
2423 (const ResultType&)ret);\
2424 \
2425 JavaValue jvalue(Tag); \
2426 JNI_ArgumentPusherVaArg ap(methodID, args); \
2427 /* Make sure class is initialized before trying to invoke its method */ \
2428 KlassHandle k(THREAD, java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls))); \
2429 Klass::cast(k())->initialize(CHECK_0); \
2430 jni_invoke_static(env, &jvalue, NULL, JNI_STATIC, methodID, &ap, CHECK_0); \
2431 va_end(args); \
2432 ret = jvalue.get_##ResultType(); \
2433 return ret;\
2434 JNI_END
2435
2436 // the runtime type of subword integral basic types is integer
2437 DEFINE_CALLSTATICMETHODV(jboolean, Boolean, T_BOOLEAN
2438 , HOTSPOT_JNI_CALLSTATICBOOLEANMETHODV_ENTRY(env, cls, (uintptr_t)methodID),
2439 HOTSPOT_JNI_CALLSTATICBOOLEANMETHODV_RETURN(_ret_ref));
2440 DEFINE_CALLSTATICMETHODV(jbyte, Byte, T_BYTE
2441 , HOTSPOT_JNI_CALLSTATICBYTEMETHODV_ENTRY(env, cls, (uintptr_t)methodID),
2442 HOTSPOT_JNI_CALLSTATICBYTEMETHODV_RETURN(_ret_ref));
2443 DEFINE_CALLSTATICMETHODV(jchar, Char, T_CHAR
2444 , HOTSPOT_JNI_CALLSTATICCHARMETHODV_ENTRY(env, cls, (uintptr_t)methodID),
2445 HOTSPOT_JNI_CALLSTATICCHARMETHODV_RETURN(_ret_ref));
2446 DEFINE_CALLSTATICMETHODV(jshort, Short, T_SHORT
2447 , HOTSPOT_JNI_CALLSTATICSHORTMETHODV_ENTRY(env, cls, (uintptr_t)methodID),
2448 HOTSPOT_JNI_CALLSTATICSHORTMETHODV_RETURN(_ret_ref));
2449
2450 DEFINE_CALLSTATICMETHODV(jobject, Object, T_OBJECT
2451 , HOTSPOT_JNI_CALLSTATICOBJECTMETHODV_ENTRY(env, cls, (uintptr_t)methodID),
2452 HOTSPOT_JNI_CALLSTATICOBJECTMETHODV_RETURN(_ret_ref));
2453 DEFINE_CALLSTATICMETHODV(jint, Int, T_INT
2454 , HOTSPOT_JNI_CALLSTATICINTMETHODV_ENTRY(env, cls, (uintptr_t)methodID),
2455 HOTSPOT_JNI_CALLSTATICINTMETHODV_RETURN(_ret_ref));
2456 DEFINE_CALLSTATICMETHODV(jlong, Long, T_LONG
2457 , HOTSPOT_JNI_CALLSTATICLONGMETHODV_ENTRY(env, cls, (uintptr_t)methodID),
2458 HOTSPOT_JNI_CALLSTATICLONGMETHODV_RETURN(_ret_ref));
2459 // Float and double probes don't return value because dtrace doesn't currently support it
2460 DEFINE_CALLSTATICMETHODV(jfloat, Float, T_FLOAT
2461 , HOTSPOT_JNI_CALLSTATICFLOATMETHODV_ENTRY(env, cls, (uintptr_t)methodID),
2462 HOTSPOT_JNI_CALLSTATICFLOATMETHODV_RETURN());
2463 DEFINE_CALLSTATICMETHODV(jdouble, Double, T_DOUBLE
2464 , HOTSPOT_JNI_CALLSTATICDOUBLEMETHODV_ENTRY(env, cls, (uintptr_t)methodID),
2465 HOTSPOT_JNI_CALLSTATICDOUBLEMETHODV_RETURN());
2466
2467 #define DEFINE_CALLSTATICMETHODA(ResultType, Result, Tag \
2468 , EntryProbe, ResultProbe) \
2469 \
2470 DT_RETURN_MARK_DECL_FOR(Result, CallStatic##Result##MethodA, ResultType \
2471 , ResultProbe); \
2472 \
2473 JNI_ENTRY(ResultType, \
2474 jni_CallStatic##Result##MethodA(JNIEnv *env, jclass cls, jmethodID methodID, const jvalue *args)) \
2475 JNIWrapper("CallStatic" XSTR(Result) "MethodA"); \
2476 \
2477 EntryProbe; \
2478 ResultType ret = 0;\
2479 DT_RETURN_MARK_FOR(Result, CallStatic##Result##MethodA, ResultType, \
2480 (const ResultType&)ret);\
2481 \
2482 JavaValue jvalue(Tag); \
2483 JNI_ArgumentPusherArray ap(methodID, args); \
2484 jni_invoke_static(env, &jvalue, NULL, JNI_STATIC, methodID, &ap, CHECK_0); \
2485 ret = jvalue.get_##ResultType(); \
2486 return ret;\
2487 JNI_END
2488
2489 // the runtime type of subword integral basic types is integer
2490 DEFINE_CALLSTATICMETHODA(jboolean, Boolean, T_BOOLEAN
2491 , HOTSPOT_JNI_CALLSTATICBOOLEANMETHODA_ENTRY(env, cls, (uintptr_t)methodID),
2492 HOTSPOT_JNI_CALLSTATICBOOLEANMETHODA_RETURN(_ret_ref));
2493 DEFINE_CALLSTATICMETHODA(jbyte, Byte, T_BYTE
2494 , HOTSPOT_JNI_CALLSTATICBYTEMETHODA_ENTRY(env, cls, (uintptr_t)methodID),
2495 HOTSPOT_JNI_CALLSTATICBYTEMETHODA_RETURN(_ret_ref));
2496 DEFINE_CALLSTATICMETHODA(jchar, Char, T_CHAR
2497 , HOTSPOT_JNI_CALLSTATICCHARMETHODA_ENTRY(env, cls, (uintptr_t)methodID),
2498 HOTSPOT_JNI_CALLSTATICCHARMETHODA_RETURN(_ret_ref));
2499 DEFINE_CALLSTATICMETHODA(jshort, Short, T_SHORT
2500 , HOTSPOT_JNI_CALLSTATICSHORTMETHODA_ENTRY(env, cls, (uintptr_t)methodID),
2501 HOTSPOT_JNI_CALLSTATICSHORTMETHODA_RETURN(_ret_ref));
2502
2503 DEFINE_CALLSTATICMETHODA(jobject, Object, T_OBJECT
2504 , HOTSPOT_JNI_CALLSTATICOBJECTMETHODA_ENTRY(env, cls, (uintptr_t)methodID),
2505 HOTSPOT_JNI_CALLSTATICOBJECTMETHODA_RETURN(_ret_ref));
2506 DEFINE_CALLSTATICMETHODA(jint, Int, T_INT
2507 , HOTSPOT_JNI_CALLSTATICINTMETHODA_ENTRY(env, cls, (uintptr_t)methodID),
2508 HOTSPOT_JNI_CALLSTATICINTMETHODA_RETURN(_ret_ref));
2509 DEFINE_CALLSTATICMETHODA(jlong, Long, T_LONG
2510 , HOTSPOT_JNI_CALLSTATICLONGMETHODA_ENTRY(env, cls, (uintptr_t)methodID),
2511 HOTSPOT_JNI_CALLSTATICLONGMETHODA_RETURN(_ret_ref));
2512 // Float and double probes don't return value because dtrace doesn't currently support it
2513 DEFINE_CALLSTATICMETHODA(jfloat, Float, T_FLOAT
2514 , HOTSPOT_JNI_CALLSTATICFLOATMETHODA_ENTRY(env, cls, (uintptr_t)methodID),
2515 HOTSPOT_JNI_CALLSTATICFLOATMETHODA_RETURN());
2516 DEFINE_CALLSTATICMETHODA(jdouble, Double, T_DOUBLE
2517 , HOTSPOT_JNI_CALLSTATICDOUBLEMETHODA_ENTRY(env, cls, (uintptr_t)methodID),
2518 HOTSPOT_JNI_CALLSTATICDOUBLEMETHODA_RETURN());
2519
2520 DT_VOID_RETURN_MARK_DECL(CallStaticVoidMethod
2521 , HOTSPOT_JNI_CALLSTATICVOIDMETHOD_RETURN());
2522 DT_VOID_RETURN_MARK_DECL(CallStaticVoidMethodV
2523 , HOTSPOT_JNI_CALLSTATICVOIDMETHODV_RETURN());
2524 DT_VOID_RETURN_MARK_DECL(CallStaticVoidMethodA
2525 , HOTSPOT_JNI_CALLSTATICVOIDMETHODA_RETURN());
2526 #endif /* USDT2 */
2527
2528 JNI_ENTRY(void, jni_CallStaticVoidMethod(JNIEnv *env, jclass cls, jmethodID methodID, ...))
2529 JNIWrapper("CallStaticVoidMethod");
2530 #ifndef USDT2
2531 DTRACE_PROBE3(hotspot_jni, CallStaticVoidMethod__entry, env, cls, methodID);
2532 #else /* USDT2 */
2533 HOTSPOT_JNI_CALLSTATICVOIDMETHOD_ENTRY(
2534 env, cls, (uintptr_t) methodID);
2535 #endif /* USDT2 */
2536 DT_VOID_RETURN_MARK(CallStaticVoidMethod);
2537
2538 va_list args;
2539 va_start(args, methodID);
2540 JavaValue jvalue(T_VOID);
2541 JNI_ArgumentPusherVaArg ap(methodID, args);
2542 jni_invoke_static(env, &jvalue, NULL, JNI_STATIC, methodID, &ap, CHECK);
2543 va_end(args);
2544 JNI_END
2545
2546
2547 JNI_ENTRY(void, jni_CallStaticVoidMethodV(JNIEnv *env, jclass cls, jmethodID methodID, va_list args))
2548 JNIWrapper("CallStaticVoidMethodV");
2549 #ifndef USDT2
2550 DTRACE_PROBE3(hotspot_jni, CallStaticVoidMethodV__entry, env, cls, methodID);
2551 #else /* USDT2 */
2552 HOTSPOT_JNI_CALLSTATICVOIDMETHODV_ENTRY(
2553 env, cls, (uintptr_t) methodID);
2554 #endif /* USDT2 */
2555 DT_VOID_RETURN_MARK(CallStaticVoidMethodV);
2556
2557 JavaValue jvalue(T_VOID);
2558 JNI_ArgumentPusherVaArg ap(methodID, args);
2559 jni_invoke_static(env, &jvalue, NULL, JNI_STATIC, methodID, &ap, CHECK);
2560 JNI_END
2561
2562
2563 JNI_ENTRY(void, jni_CallStaticVoidMethodA(JNIEnv *env, jclass cls, jmethodID methodID, const jvalue *args))
2564 JNIWrapper("CallStaticVoidMethodA");
2565 #ifndef USDT2
2566 DTRACE_PROBE3(hotspot_jni, CallStaticVoidMethodA__entry, env, cls, methodID);
2567 #else /* USDT2 */
2568 HOTSPOT_JNI_CALLSTATICVOIDMETHODA_ENTRY(
2569 env, cls, (uintptr_t) methodID);
2570 #endif /* USDT2 */
2571 DT_VOID_RETURN_MARK(CallStaticVoidMethodA);
2572
2573 JavaValue jvalue(T_VOID);
2574 JNI_ArgumentPusherArray ap(methodID, args);
2575 jni_invoke_static(env, &jvalue, NULL, JNI_STATIC, methodID, &ap, CHECK);
2576 JNI_END
2577
2578
2579 //
2580 // Accessing Fields
2581 //
2582
2583
2584 #ifndef USDT2
2585 DT_RETURN_MARK_DECL(GetFieldID, jfieldID);
2586 #else /* USDT2 */
2587 DT_RETURN_MARK_DECL(GetFieldID, jfieldID
2588 , HOTSPOT_JNI_GETFIELDID_RETURN((uintptr_t)_ret_ref));
2589 #endif /* USDT2 */
2590
2591 JNI_ENTRY(jfieldID, jni_GetFieldID(JNIEnv *env, jclass clazz,
2592 const char *name, const char *sig))
2593 JNIWrapper("GetFieldID");
2594 #ifndef USDT2
2595 DTRACE_PROBE4(hotspot_jni, GetFieldID__entry, env, clazz, name, sig);
2596 #else /* USDT2 */
2597 HOTSPOT_JNI_GETFIELDID_ENTRY(
2598 env, clazz, (char *) name, (char *) sig);
2599 #endif /* USDT2 */
2600 jfieldID ret = 0;
2601 DT_RETURN_MARK(GetFieldID, jfieldID, (const jfieldID&)ret);
2602
2603 // The class should have been loaded (we have an instance of the class
2604 // passed in) so the field and signature should already be in the symbol
2605 // table. If they're not there, the field doesn't exist.
2606 TempNewSymbol fieldname = SymbolTable::probe(name, (int)strlen(name));
2607 TempNewSymbol signame = SymbolTable::probe(sig, (int)strlen(sig));
2608 if (fieldname == NULL || signame == NULL) {
2609 THROW_MSG_0(vmSymbols::java_lang_NoSuchFieldError(), (char*) name);
2610 }
2611 KlassHandle k(THREAD,
2612 java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz)));
2613 // Make sure class is initialized before handing id's out to fields
2614 Klass::cast(k())->initialize(CHECK_NULL);
2615
2616 fieldDescriptor fd;
2617 if (!Klass::cast(k())->oop_is_instance() ||
2618 !InstanceKlass::cast(k())->find_field(fieldname, signame, false, &fd)) {
2619 THROW_MSG_0(vmSymbols::java_lang_NoSuchFieldError(), (char*) name);
2620 }
2621
2622 // A jfieldID for a non-static field is simply the offset of the field within the instanceOop
2623 // It may also have hash bits for k, if VerifyJNIFields is turned on.
2624 ret = jfieldIDWorkaround::to_instance_jfieldID(k(), fd.offset());
2625 return ret;
2626 JNI_END
2627
2628
2629 JNI_ENTRY(jobject, jni_GetObjectField(JNIEnv *env, jobject obj, jfieldID fieldID))
2630 JNIWrapper("GetObjectField");
2631 #ifndef USDT2
2632 DTRACE_PROBE3(hotspot_jni, GetObjectField__entry, env, obj, fieldID);
2633 #else /* USDT2 */
2634 HOTSPOT_JNI_GETOBJECTFIELD_ENTRY(
2635 env, obj, (uintptr_t) fieldID);
2636 #endif /* USDT2 */
2637 oop o = JNIHandles::resolve_non_null(obj);
2638 Klass* k = o->klass();
2639 int offset = jfieldIDWorkaround::from_instance_jfieldID(k, fieldID);
2640 // Keep JVMTI addition small and only check enabled flag here.
2641 // jni_GetField_probe() assumes that is okay to create handles.
2642 if (JvmtiExport::should_post_field_access()) {
2643 o = JvmtiExport::jni_GetField_probe(thread, obj, o, k, fieldID, false);
2644 }
2645 jobject ret = JNIHandles::make_local(env, o->obj_field(offset));
2646 #ifndef SERIALGC
2647 // If G1 is enabled and we are accessing the value of the referent
2648 // field in a reference object then we need to register a non-null
2649 // referent with the SATB barrier.
2650 if (UseG1GC) {
2651 bool needs_barrier = false;
2652
2653 if (ret != NULL &&
2654 offset == java_lang_ref_Reference::referent_offset &&
2655 InstanceKlass::cast(k)->reference_type() != REF_NONE) {
2656 assert(InstanceKlass::cast(k)->is_subclass_of(SystemDictionary::Reference_klass()), "sanity");
2657 needs_barrier = true;
2658 }
2659
2660 if (needs_barrier) {
2661 oop referent = JNIHandles::resolve(ret);
2662 G1SATBCardTableModRefBS::enqueue(referent);
2663 }
2664 }
2665 #endif // SERIALGC
2666 #ifndef USDT2
2667 DTRACE_PROBE1(hotspot_jni, GetObjectField__return, ret);
2668 #else /* USDT2 */
2669 HOTSPOT_JNI_GETOBJECTFIELD_RETURN(
2670 ret);
2671 #endif /* USDT2 */
2672 return ret;
2673 JNI_END
2674
2675
2676 #ifndef USDT2
2677 #define DEFINE_GETFIELD(Return,Fieldname,Result) \
2678 \
2679 DT_RETURN_MARK_DECL_FOR(Result, Get##Result##Field, Return);\
2680 \
2681 JNI_QUICK_ENTRY(Return, jni_Get##Result##Field(JNIEnv *env, jobject obj, jfieldID fieldID)) \
2682 JNIWrapper("Get" XSTR(Result) "Field"); \
2683 \
2684 DTRACE_PROBE3(hotspot_jni, Get##Result##Field__entry, env, obj, fieldID);\
2685 Return ret = 0;\
2686 DT_RETURN_MARK_FOR(Result, Get##Result##Field, Return, (const Return&)ret);\
2687 \
2688 oop o = JNIHandles::resolve_non_null(obj); \
2689 Klass* k = o->klass(); \
2690 int offset = jfieldIDWorkaround::from_instance_jfieldID(k, fieldID); \
2691 /* Keep JVMTI addition small and only check enabled flag here. */ \
2692 /* jni_GetField_probe_nh() assumes that is not okay to create handles */ \
2693 /* and creates a ResetNoHandleMark. */ \
2694 if (JvmtiExport::should_post_field_access()) { \
2695 o = JvmtiExport::jni_GetField_probe_nh(thread, obj, o, k, fieldID, false); \
2696 } \
2697 ret = o->Fieldname##_field(offset); \
2698 return ret; \
2699 JNI_END
2700
2701 DEFINE_GETFIELD(jboolean, bool, Boolean)
2702 DEFINE_GETFIELD(jbyte, byte, Byte)
2703 DEFINE_GETFIELD(jchar, char, Char)
2704 DEFINE_GETFIELD(jshort, short, Short)
2705 DEFINE_GETFIELD(jint, int, Int)
2706 DEFINE_GETFIELD(jlong, long, Long)
2707 DEFINE_GETFIELD(jfloat, float, Float)
2708 DEFINE_GETFIELD(jdouble, double, Double)
2709
2710 #else /* USDT2 */
2711
2712 #define DEFINE_GETFIELD(Return,Fieldname,Result \
2713 , EntryProbe, ReturnProbe) \
2714 \
2715 DT_RETURN_MARK_DECL_FOR(Result, Get##Result##Field, Return \
2716 , ReturnProbe); \
2717 \
2718 JNI_QUICK_ENTRY(Return, jni_Get##Result##Field(JNIEnv *env, jobject obj, jfieldID fieldID)) \
2719 JNIWrapper("Get" XSTR(Result) "Field"); \
2720 \
2721 EntryProbe; \
2722 Return ret = 0;\
2723 DT_RETURN_MARK_FOR(Result, Get##Result##Field, Return, (const Return&)ret);\
2724 \
2725 oop o = JNIHandles::resolve_non_null(obj); \
2726 Klass* k = o->klass(); \
2727 int offset = jfieldIDWorkaround::from_instance_jfieldID(k, fieldID); \
2728 /* Keep JVMTI addition small and only check enabled flag here. */ \
2729 /* jni_GetField_probe_nh() assumes that is not okay to create handles */ \
2730 /* and creates a ResetNoHandleMark. */ \
2731 if (JvmtiExport::should_post_field_access()) { \
2732 o = JvmtiExport::jni_GetField_probe_nh(thread, obj, o, k, fieldID, false); \
2733 } \
2734 ret = o->Fieldname##_field(offset); \
2735 return ret; \
2736 JNI_END
2737
2738 DEFINE_GETFIELD(jboolean, bool, Boolean
2739 , HOTSPOT_JNI_GETBOOLEANFIELD_ENTRY(env, obj, (uintptr_t)fieldID),
2740 HOTSPOT_JNI_GETBOOLEANFIELD_RETURN(_ret_ref))
2741 DEFINE_GETFIELD(jbyte, byte, Byte
2742 , HOTSPOT_JNI_GETBYTEFIELD_ENTRY(env, obj, (uintptr_t)fieldID),
2743 HOTSPOT_JNI_GETBYTEFIELD_RETURN(_ret_ref))
2744 DEFINE_GETFIELD(jchar, char, Char
2745 , HOTSPOT_JNI_GETCHARFIELD_ENTRY(env, obj, (uintptr_t)fieldID),
2746 HOTSPOT_JNI_GETCHARFIELD_RETURN(_ret_ref))
2747 DEFINE_GETFIELD(jshort, short, Short
2748 , HOTSPOT_JNI_GETSHORTFIELD_ENTRY(env, obj, (uintptr_t)fieldID),
2749 HOTSPOT_JNI_GETSHORTFIELD_RETURN(_ret_ref))
2750 DEFINE_GETFIELD(jint, int, Int
2751 , HOTSPOT_JNI_GETINTFIELD_ENTRY(env, obj, (uintptr_t)fieldID),
2752 HOTSPOT_JNI_GETINTFIELD_RETURN(_ret_ref))
2753 DEFINE_GETFIELD(jlong, long, Long
2754 , HOTSPOT_JNI_GETLONGFIELD_ENTRY(env, obj, (uintptr_t)fieldID),
2755 HOTSPOT_JNI_GETLONGFIELD_RETURN(_ret_ref))
2756 // Float and double probes don't return value because dtrace doesn't currently support it
2757 DEFINE_GETFIELD(jfloat, float, Float
2758 , HOTSPOT_JNI_GETFLOATFIELD_ENTRY(env, obj, (uintptr_t)fieldID),
2759 HOTSPOT_JNI_GETFLOATFIELD_RETURN())
2760 DEFINE_GETFIELD(jdouble, double, Double
2761 , HOTSPOT_JNI_GETDOUBLEFIELD_ENTRY(env, obj, (uintptr_t)fieldID),
2762 HOTSPOT_JNI_GETDOUBLEFIELD_RETURN())
2763 #endif /* USDT2 */
2764
2765 address jni_GetBooleanField_addr() {
2766 return (address)jni_GetBooleanField;
2767 }
2768 address jni_GetByteField_addr() {
2769 return (address)jni_GetByteField;
2770 }
2771 address jni_GetCharField_addr() {
2772 return (address)jni_GetCharField;
2773 }
2774 address jni_GetShortField_addr() {
2775 return (address)jni_GetShortField;
2776 }
2777 address jni_GetIntField_addr() {
2778 return (address)jni_GetIntField;
2779 }
2780 address jni_GetLongField_addr() {
2781 return (address)jni_GetLongField;
2782 }
2783 address jni_GetFloatField_addr() {
2784 return (address)jni_GetFloatField;
2785 }
2786 address jni_GetDoubleField_addr() {
2787 return (address)jni_GetDoubleField;
2788 }
2789
2790 JNI_QUICK_ENTRY(void, jni_SetObjectField(JNIEnv *env, jobject obj, jfieldID fieldID, jobject value))
2791 JNIWrapper("SetObjectField");
2792 #ifndef USDT2
2793 DTRACE_PROBE4(hotspot_jni, SetObjectField__entry, env, obj, fieldID, value);
2794 #else /* USDT2 */
2795 HOTSPOT_JNI_SETOBJECTFIELD_ENTRY(
2796 env, obj, (uintptr_t) fieldID, value);
2797 #endif /* USDT2 */
2798 oop o = JNIHandles::resolve_non_null(obj);
2799 Klass* k = o->klass();
2800 int offset = jfieldIDWorkaround::from_instance_jfieldID(k, fieldID);
2801 // Keep JVMTI addition small and only check enabled flag here.
2802 // jni_SetField_probe_nh() assumes that is not okay to create handles
2803 // and creates a ResetNoHandleMark.
2804 if (JvmtiExport::should_post_field_modification()) {
2805 jvalue field_value;
2806 field_value.l = value;
2807 o = JvmtiExport::jni_SetField_probe_nh(thread, obj, o, k, fieldID, false, 'L', (jvalue *)&field_value);
2808 }
2809 o->obj_field_put(offset, JNIHandles::resolve(value));
2810 #ifndef USDT2
2811 DTRACE_PROBE(hotspot_jni, SetObjectField__return);
2812 #else /* USDT2 */
2813 HOTSPOT_JNI_SETOBJECTFIELD_RETURN(
2814 );
2815 #endif /* USDT2 */
2816 JNI_END
2817
2818 #ifndef USDT2
2819 #define DEFINE_SETFIELD(Argument,Fieldname,Result,SigType,unionType) \
2820 \
2821 JNI_QUICK_ENTRY(void, jni_Set##Result##Field(JNIEnv *env, jobject obj, jfieldID fieldID, Argument value)) \
2822 JNIWrapper("Set" XSTR(Result) "Field"); \
2823 \
2824 FP_SELECT_##Result( \
2825 DTRACE_PROBE4(hotspot_jni, Set##Result##Field__entry, env, obj, fieldID, value), \
2826 DTRACE_PROBE3(hotspot_jni, Set##Result##Field__entry, env, obj, fieldID)); \
2827 \
2828 oop o = JNIHandles::resolve_non_null(obj); \
2829 Klass* k = o->klass(); \
2830 int offset = jfieldIDWorkaround::from_instance_jfieldID(k, fieldID); \
2831 /* Keep JVMTI addition small and only check enabled flag here. */ \
2832 /* jni_SetField_probe_nh() assumes that is not okay to create handles */ \
2833 /* and creates a ResetNoHandleMark. */ \
2834 if (JvmtiExport::should_post_field_modification()) { \
2835 jvalue field_value; \
2836 field_value.unionType = value; \
2837 o = JvmtiExport::jni_SetField_probe_nh(thread, obj, o, k, fieldID, false, SigType, (jvalue *)&field_value); \
2838 } \
2839 o->Fieldname##_field_put(offset, value); \
2840 DTRACE_PROBE(hotspot_jni, Set##Result##Field__return);\
2841 JNI_END
2842
2843 DEFINE_SETFIELD(jboolean, bool, Boolean, 'Z', z)
2844 DEFINE_SETFIELD(jbyte, byte, Byte, 'B', b)
2845 DEFINE_SETFIELD(jchar, char, Char, 'C', c)
2846 DEFINE_SETFIELD(jshort, short, Short, 'S', s)
2847 DEFINE_SETFIELD(jint, int, Int, 'I', i)
2848 DEFINE_SETFIELD(jlong, long, Long, 'J', j)
2849 DEFINE_SETFIELD(jfloat, float, Float, 'F', f)
2850 DEFINE_SETFIELD(jdouble, double, Double, 'D', d)
2851
2852 #else /* USDT2 */
2853
2854 #define DEFINE_SETFIELD(Argument,Fieldname,Result,SigType,unionType \
2855 , EntryProbe, ReturnProbe) \
2856 \
2857 JNI_QUICK_ENTRY(void, jni_Set##Result##Field(JNIEnv *env, jobject obj, jfieldID fieldID, Argument value)) \
2858 JNIWrapper("Set" XSTR(Result) "Field"); \
2859 \
2860 EntryProbe; \
2861 \
2862 oop o = JNIHandles::resolve_non_null(obj); \
2863 Klass* k = o->klass(); \
2864 int offset = jfieldIDWorkaround::from_instance_jfieldID(k, fieldID); \
2865 /* Keep JVMTI addition small and only check enabled flag here. */ \
2866 /* jni_SetField_probe_nh() assumes that is not okay to create handles */ \
2867 /* and creates a ResetNoHandleMark. */ \
2868 if (JvmtiExport::should_post_field_modification()) { \
2869 jvalue field_value; \
2870 field_value.unionType = value; \
2871 o = JvmtiExport::jni_SetField_probe_nh(thread, obj, o, k, fieldID, false, SigType, (jvalue *)&field_value); \
2872 } \
2873 o->Fieldname##_field_put(offset, value); \
2874 ReturnProbe; \
2875 JNI_END
2876
2877 DEFINE_SETFIELD(jboolean, bool, Boolean, 'Z', z
2878 , HOTSPOT_JNI_SETBOOLEANFIELD_ENTRY(env, obj, (uintptr_t)fieldID, value),
2879 HOTSPOT_JNI_SETBOOLEANFIELD_RETURN())
2880 DEFINE_SETFIELD(jbyte, byte, Byte, 'B', b
2881 , HOTSPOT_JNI_SETBYTEFIELD_ENTRY(env, obj, (uintptr_t)fieldID, value),
2882 HOTSPOT_JNI_SETBYTEFIELD_RETURN())
2883 DEFINE_SETFIELD(jchar, char, Char, 'C', c
2884 , HOTSPOT_JNI_SETCHARFIELD_ENTRY(env, obj, (uintptr_t)fieldID, value),
2885 HOTSPOT_JNI_SETCHARFIELD_RETURN())
2886 DEFINE_SETFIELD(jshort, short, Short, 'S', s
2887 , HOTSPOT_JNI_SETSHORTFIELD_ENTRY(env, obj, (uintptr_t)fieldID, value),
2888 HOTSPOT_JNI_SETSHORTFIELD_RETURN())
2889 DEFINE_SETFIELD(jint, int, Int, 'I', i
2890 , HOTSPOT_JNI_SETINTFIELD_ENTRY(env, obj, (uintptr_t)fieldID, value),
2891 HOTSPOT_JNI_SETINTFIELD_RETURN())
2892 DEFINE_SETFIELD(jlong, long, Long, 'J', j
2893 , HOTSPOT_JNI_SETLONGFIELD_ENTRY(env, obj, (uintptr_t)fieldID, value),
2894 HOTSPOT_JNI_SETLONGFIELD_RETURN())
2895 // Float and double probes don't return value because dtrace doesn't currently support it
2896 DEFINE_SETFIELD(jfloat, float, Float, 'F', f
2897 , HOTSPOT_JNI_SETFLOATFIELD_ENTRY(env, obj, (uintptr_t)fieldID),
2898 HOTSPOT_JNI_SETFLOATFIELD_RETURN())
2899 DEFINE_SETFIELD(jdouble, double, Double, 'D', d
2900 , HOTSPOT_JNI_SETDOUBLEFIELD_ENTRY(env, obj, (uintptr_t)fieldID),
2901 HOTSPOT_JNI_SETDOUBLEFIELD_RETURN())
2902 #endif /* USDT2 */
2903
2904 #ifndef USDT2
2905 DT_RETURN_MARK_DECL(ToReflectedField, jobject);
2906 #else /* USDT2 */
2907 DT_RETURN_MARK_DECL(ToReflectedField, jobject
2908 , HOTSPOT_JNI_TOREFLECTEDFIELD_RETURN(_ret_ref));
2909 #endif /* USDT2 */
2910
2911 JNI_ENTRY(jobject, jni_ToReflectedField(JNIEnv *env, jclass cls, jfieldID fieldID, jboolean isStatic))
2912 JNIWrapper("ToReflectedField");
2913 #ifndef USDT2
2914 DTRACE_PROBE4(hotspot_jni, ToReflectedField__entry,
2915 env, cls, fieldID, isStatic);
2916 #else /* USDT2 */
2917 HOTSPOT_JNI_TOREFLECTEDFIELD_ENTRY(
2918 env, cls, (uintptr_t) fieldID, isStatic);
2919 #endif /* USDT2 */
2920 jobject ret = NULL;
2921 DT_RETURN_MARK(ToReflectedField, jobject, (const jobject&)ret);
2922
2923 fieldDescriptor fd;
2924 bool found = false;
2925 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls));
2926
2927 assert(jfieldIDWorkaround::is_static_jfieldID(fieldID) == (isStatic != 0), "invalid fieldID");
2928
2929 if (isStatic) {
2930 // Static field. The fieldID a JNIid specifying the field holder and the offset within the Klass*.
2931 JNIid* id = jfieldIDWorkaround::from_static_jfieldID(fieldID);
2932 assert(id->is_static_field_id(), "invalid static field id");
2933 found = id->find_local_field(&fd);
2934 } else {
2935 // Non-static field. The fieldID is really the offset of the field within the instanceOop.
2936 int offset = jfieldIDWorkaround::from_instance_jfieldID(k, fieldID);
2937 found = InstanceKlass::cast(k)->find_field_from_offset(offset, false, &fd);
2938 }
2939 assert(found, "bad fieldID passed into jni_ToReflectedField");
2940 oop reflected = Reflection::new_field(&fd, UseNewReflection, CHECK_NULL);
2941 ret = JNIHandles::make_local(env, reflected);
2942 return ret;
2943 JNI_END
2944
2945
2946 //
2947 // Accessing Static Fields
2948 //
2949 #ifndef USDT2
2950 DT_RETURN_MARK_DECL(GetStaticFieldID, jfieldID);
2951 #else /* USDT2 */
2952 DT_RETURN_MARK_DECL(GetStaticFieldID, jfieldID
2953 , HOTSPOT_JNI_GETSTATICFIELDID_RETURN((uintptr_t)_ret_ref));
2954 #endif /* USDT2 */
2955
2956 JNI_ENTRY(jfieldID, jni_GetStaticFieldID(JNIEnv *env, jclass clazz,
2957 const char *name, const char *sig))
2958 JNIWrapper("GetStaticFieldID");
2959 #ifndef USDT2
2960 DTRACE_PROBE4(hotspot_jni, GetStaticFieldID__entry, env, clazz, name, sig);
2961 #else /* USDT2 */
2962 HOTSPOT_JNI_GETSTATICFIELDID_ENTRY(
2963 env, clazz, (char *) name, (char *) sig);
2964 #endif /* USDT2 */
2965 jfieldID ret = NULL;
2966 DT_RETURN_MARK(GetStaticFieldID, jfieldID, (const jfieldID&)ret);
2967
2968 // The class should have been loaded (we have an instance of the class
2969 // passed in) so the field and signature should already be in the symbol
2970 // table. If they're not there, the field doesn't exist.
2971 TempNewSymbol fieldname = SymbolTable::probe(name, (int)strlen(name));
2972 TempNewSymbol signame = SymbolTable::probe(sig, (int)strlen(sig));
2973 if (fieldname == NULL || signame == NULL) {
2974 THROW_MSG_0(vmSymbols::java_lang_NoSuchFieldError(), (char*) name);
2975 }
2976 KlassHandle k(THREAD,
2977 java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz)));
2978 // Make sure class is initialized before handing id's out to static fields
2979 Klass::cast(k())->initialize(CHECK_NULL);
2980
2981 fieldDescriptor fd;
2982 if (!Klass::cast(k())->oop_is_instance() ||
2983 !InstanceKlass::cast(k())->find_field(fieldname, signame, true, &fd)) {
2984 THROW_MSG_0(vmSymbols::java_lang_NoSuchFieldError(), (char*) name);
2985 }
2986
2987 // A jfieldID for a static field is a JNIid specifying the field holder and the offset within the Klass*
2988 JNIid* id = fd.field_holder()->jni_id_for(fd.offset());
2989 debug_only(id->set_is_static_field_id();)
2990
2991 debug_only(id->verify(fd.field_holder()));
2992
2993 ret = jfieldIDWorkaround::to_static_jfieldID(id);
2994 return ret;
2995 JNI_END
2996
2997
2998 JNI_ENTRY(jobject, jni_GetStaticObjectField(JNIEnv *env, jclass clazz, jfieldID fieldID))
2999 JNIWrapper("GetStaticObjectField");
3000 #ifndef USDT2
3001 DTRACE_PROBE3(hotspot_jni, GetStaticObjectField__entry, env, clazz, fieldID);
3002 #else /* USDT2 */
3003 HOTSPOT_JNI_GETSTATICOBJECTFIELD_ENTRY(
3004 env, clazz, (uintptr_t) fieldID);
3005 #endif /* USDT2 */
3006 #if INCLUDE_JNI_CHECK
3007 DEBUG_ONLY(Klass* param_k = jniCheck::validate_class(thread, clazz);)
3008 #endif // INCLUDE_JNI_CHECK
3009 JNIid* id = jfieldIDWorkaround::from_static_jfieldID(fieldID);
3010 assert(id->is_static_field_id(), "invalid static field id");
3011 // Keep JVMTI addition small and only check enabled flag here.
3012 // jni_GetField_probe() assumes that is okay to create handles.
3013 if (JvmtiExport::should_post_field_access()) {
3014 JvmtiExport::jni_GetField_probe(thread, NULL, NULL, id->holder(), fieldID, true);
3015 }
3016 jobject ret = JNIHandles::make_local(id->holder()->java_mirror()->obj_field(id->offset()));
3017 #ifndef USDT2
3018 DTRACE_PROBE1(hotspot_jni, GetStaticObjectField__return, ret);
3019 #else /* USDT2 */
3020 HOTSPOT_JNI_GETSTATICOBJECTFIELD_RETURN(
3021 ret);
3022 #endif /* USDT2 */
3023 return ret;
3024 JNI_END
3025
3026 #ifndef USDT2
3027 #define DEFINE_GETSTATICFIELD(Return,Fieldname,Result) \
3028 \
3029 DT_RETURN_MARK_DECL_FOR(Result, GetStatic##Result##Field, Return);\
3030 \
3031 JNI_ENTRY(Return, jni_GetStatic##Result##Field(JNIEnv *env, jclass clazz, jfieldID fieldID)) \
3032 JNIWrapper("GetStatic" XSTR(Result) "Field"); \
3033 DTRACE_PROBE3(hotspot_jni, GetStatic##Result##Field__entry, env, clazz, fieldID);\
3034 Return ret = 0;\
3035 DT_RETURN_MARK_FOR(Result, GetStatic##Result##Field, Return, \
3036 (const Return&)ret);\
3037 JNIid* id = jfieldIDWorkaround::from_static_jfieldID(fieldID); \
3038 assert(id->is_static_field_id(), "invalid static field id"); \
3039 /* Keep JVMTI addition small and only check enabled flag here. */ \
3040 /* jni_GetField_probe() assumes that is okay to create handles. */ \
3041 if (JvmtiExport::should_post_field_access()) { \
3042 JvmtiExport::jni_GetField_probe(thread, NULL, NULL, id->holder(), fieldID, true); \
3043 } \
3044 ret = id->holder()->java_mirror()-> Fieldname##_field (id->offset()); \
3045 return ret;\
3046 JNI_END
3047
3048 DEFINE_GETSTATICFIELD(jboolean, bool, Boolean)
3049 DEFINE_GETSTATICFIELD(jbyte, byte, Byte)
3050 DEFINE_GETSTATICFIELD(jchar, char, Char)
3051 DEFINE_GETSTATICFIELD(jshort, short, Short)
3052 DEFINE_GETSTATICFIELD(jint, int, Int)
3053 DEFINE_GETSTATICFIELD(jlong, long, Long)
3054 DEFINE_GETSTATICFIELD(jfloat, float, Float)
3055 DEFINE_GETSTATICFIELD(jdouble, double, Double)
3056
3057 #else /* USDT2 */
3058
3059 #define DEFINE_GETSTATICFIELD(Return,Fieldname,Result \
3060 , EntryProbe, ReturnProbe) \
3061 \
3062 DT_RETURN_MARK_DECL_FOR(Result, GetStatic##Result##Field, Return \
3063 , ReturnProbe); \
3064 \
3065 JNI_ENTRY(Return, jni_GetStatic##Result##Field(JNIEnv *env, jclass clazz, jfieldID fieldID)) \
3066 JNIWrapper("GetStatic" XSTR(Result) "Field"); \
3067 EntryProbe; \
3068 Return ret = 0;\
3069 DT_RETURN_MARK_FOR(Result, GetStatic##Result##Field, Return, \
3070 (const Return&)ret);\
3071 JNIid* id = jfieldIDWorkaround::from_static_jfieldID(fieldID); \
3072 assert(id->is_static_field_id(), "invalid static field id"); \
3073 /* Keep JVMTI addition small and only check enabled flag here. */ \
3074 /* jni_GetField_probe() assumes that is okay to create handles. */ \
3075 if (JvmtiExport::should_post_field_access()) { \
3076 JvmtiExport::jni_GetField_probe(thread, NULL, NULL, id->holder(), fieldID, true); \
3077 } \
3078 ret = id->holder()->java_mirror()-> Fieldname##_field (id->offset()); \
3079 return ret;\
3080 JNI_END
3081
3082 DEFINE_GETSTATICFIELD(jboolean, bool, Boolean
3083 , HOTSPOT_JNI_GETSTATICBOOLEANFIELD_ENTRY(env, clazz, (uintptr_t) fieldID), HOTSPOT_JNI_GETSTATICBOOLEANFIELD_RETURN(_ret_ref))
3084 DEFINE_GETSTATICFIELD(jbyte, byte, Byte
3085 , HOTSPOT_JNI_GETSTATICBYTEFIELD_ENTRY(env, clazz, (uintptr_t) fieldID), HOTSPOT_JNI_GETSTATICBYTEFIELD_RETURN(_ret_ref) )
3086 DEFINE_GETSTATICFIELD(jchar, char, Char
3087 , HOTSPOT_JNI_GETSTATICCHARFIELD_ENTRY(env, clazz, (uintptr_t) fieldID), HOTSPOT_JNI_GETSTATICCHARFIELD_RETURN(_ret_ref) )
3088 DEFINE_GETSTATICFIELD(jshort, short, Short
3089 , HOTSPOT_JNI_GETSTATICSHORTFIELD_ENTRY(env, clazz, (uintptr_t) fieldID), HOTSPOT_JNI_GETSTATICSHORTFIELD_RETURN(_ret_ref) )
3090 DEFINE_GETSTATICFIELD(jint, int, Int
3091 , HOTSPOT_JNI_GETSTATICINTFIELD_ENTRY(env, clazz, (uintptr_t) fieldID), HOTSPOT_JNI_GETSTATICINTFIELD_RETURN(_ret_ref) )
3092 DEFINE_GETSTATICFIELD(jlong, long, Long
3093 , HOTSPOT_JNI_GETSTATICLONGFIELD_ENTRY(env, clazz, (uintptr_t) fieldID), HOTSPOT_JNI_GETSTATICLONGFIELD_RETURN(_ret_ref) )
3094 // Float and double probes don't return value because dtrace doesn't currently support it
3095 DEFINE_GETSTATICFIELD(jfloat, float, Float
3096 , HOTSPOT_JNI_GETSTATICFLOATFIELD_ENTRY(env, clazz, (uintptr_t) fieldID), HOTSPOT_JNI_GETSTATICFLOATFIELD_RETURN() )
3097 DEFINE_GETSTATICFIELD(jdouble, double, Double
3098 , HOTSPOT_JNI_GETSTATICDOUBLEFIELD_ENTRY(env, clazz, (uintptr_t) fieldID), HOTSPOT_JNI_GETSTATICDOUBLEFIELD_RETURN() )
3099 #endif /* USDT2 */
3100
3101 JNI_ENTRY(void, jni_SetStaticObjectField(JNIEnv *env, jclass clazz, jfieldID fieldID, jobject value))
3102 JNIWrapper("SetStaticObjectField");
3103 #ifndef USDT2
3104 DTRACE_PROBE4(hotspot_jni, SetStaticObjectField__entry, env, clazz, fieldID, value);
3105 #else /* USDT2 */
3106 HOTSPOT_JNI_SETSTATICOBJECTFIELD_ENTRY(
3107 env, clazz, (uintptr_t) fieldID, value);
3108 #endif /* USDT2 */
3109 JNIid* id = jfieldIDWorkaround::from_static_jfieldID(fieldID);
3110 assert(id->is_static_field_id(), "invalid static field id");
3111 // Keep JVMTI addition small and only check enabled flag here.
3112 // jni_SetField_probe() assumes that is okay to create handles.
3113 if (JvmtiExport::should_post_field_modification()) {
3114 jvalue field_value;
3115 field_value.l = value;
3116 JvmtiExport::jni_SetField_probe(thread, NULL, NULL, id->holder(), fieldID, true, 'L', (jvalue *)&field_value);
3117 }
3118 id->holder()->java_mirror()->obj_field_put(id->offset(), JNIHandles::resolve(value));
3119 #ifndef USDT2
3120 DTRACE_PROBE(hotspot_jni, SetStaticObjectField__return);
3121 #else /* USDT2 */
3122 HOTSPOT_JNI_SETSTATICOBJECTFIELD_RETURN(
3123 );
3124 #endif /* USDT2 */
3125 JNI_END
3126
3127
3128 #ifndef USDT2
3129 #define DEFINE_SETSTATICFIELD(Argument,Fieldname,Result,SigType,unionType) \
3130 \
3131 JNI_ENTRY(void, jni_SetStatic##Result##Field(JNIEnv *env, jclass clazz, jfieldID fieldID, Argument value)) \
3132 JNIWrapper("SetStatic" XSTR(Result) "Field"); \
3133 FP_SELECT_##Result( \
3134 DTRACE_PROBE4(hotspot_jni, SetStatic##Result##Field__entry, env, clazz, fieldID, value), \
3135 DTRACE_PROBE3(hotspot_jni, SetStatic##Result##Field__entry, env, clazz, fieldID)); \
3136 \
3137 JNIid* id = jfieldIDWorkaround::from_static_jfieldID(fieldID); \
3138 assert(id->is_static_field_id(), "invalid static field id"); \
3139 /* Keep JVMTI addition small and only check enabled flag here. */ \
3140 /* jni_SetField_probe() assumes that is okay to create handles. */ \
3141 if (JvmtiExport::should_post_field_modification()) { \
3142 jvalue field_value; \
3143 field_value.unionType = value; \
3144 JvmtiExport::jni_SetField_probe(thread, NULL, NULL, id->holder(), fieldID, true, SigType, (jvalue *)&field_value); \
3145 } \
3146 id->holder()->java_mirror()-> Fieldname##_field_put (id->offset(), value); \
3147 DTRACE_PROBE(hotspot_jni, SetStatic##Result##Field__return);\
3148 JNI_END
3149
3150 DEFINE_SETSTATICFIELD(jboolean, bool, Boolean, 'Z', z)
3151 DEFINE_SETSTATICFIELD(jbyte, byte, Byte, 'B', b)
3152 DEFINE_SETSTATICFIELD(jchar, char, Char, 'C', c)
3153 DEFINE_SETSTATICFIELD(jshort, short, Short, 'S', s)
3154 DEFINE_SETSTATICFIELD(jint, int, Int, 'I', i)
3155 DEFINE_SETSTATICFIELD(jlong, long, Long, 'J', j)
3156 DEFINE_SETSTATICFIELD(jfloat, float, Float, 'F', f)
3157 DEFINE_SETSTATICFIELD(jdouble, double, Double, 'D', d)
3158
3159 #else /* USDT2 */
3160
3161 #define DEFINE_SETSTATICFIELD(Argument,Fieldname,Result,SigType,unionType \
3162 , EntryProbe, ReturnProbe) \
3163 \
3164 JNI_ENTRY(void, jni_SetStatic##Result##Field(JNIEnv *env, jclass clazz, jfieldID fieldID, Argument value)) \
3165 JNIWrapper("SetStatic" XSTR(Result) "Field"); \
3166 EntryProbe; \
3167 \
3168 JNIid* id = jfieldIDWorkaround::from_static_jfieldID(fieldID); \
3169 assert(id->is_static_field_id(), "invalid static field id"); \
3170 /* Keep JVMTI addition small and only check enabled flag here. */ \
3171 /* jni_SetField_probe() assumes that is okay to create handles. */ \
3172 if (JvmtiExport::should_post_field_modification()) { \
3173 jvalue field_value; \
3174 field_value.unionType = value; \
3175 JvmtiExport::jni_SetField_probe(thread, NULL, NULL, id->holder(), fieldID, true, SigType, (jvalue *)&field_value); \
3176 } \
3177 id->holder()->java_mirror()-> Fieldname##_field_put (id->offset(), value); \
3178 ReturnProbe;\
3179 JNI_END
3180
3181 DEFINE_SETSTATICFIELD(jboolean, bool, Boolean, 'Z', z
3182 , HOTSPOT_JNI_SETBOOLEANFIELD_ENTRY(env, clazz, (uintptr_t)fieldID, value),
3183 HOTSPOT_JNI_SETBOOLEANFIELD_RETURN())
3184 DEFINE_SETSTATICFIELD(jbyte, byte, Byte, 'B', b
3185 , HOTSPOT_JNI_SETSTATICBYTEFIELD_ENTRY(env, clazz, (uintptr_t) fieldID, value),
3186 HOTSPOT_JNI_SETSTATICBYTEFIELD_RETURN())
3187 DEFINE_SETSTATICFIELD(jchar, char, Char, 'C', c
3188 , HOTSPOT_JNI_SETSTATICCHARFIELD_ENTRY(env, clazz, (uintptr_t) fieldID, value),
3189 HOTSPOT_JNI_SETSTATICCHARFIELD_RETURN())
3190 DEFINE_SETSTATICFIELD(jshort, short, Short, 'S', s
3191 , HOTSPOT_JNI_SETSTATICSHORTFIELD_ENTRY(env, clazz, (uintptr_t) fieldID, value),
3192 HOTSPOT_JNI_SETSTATICSHORTFIELD_RETURN())
3193 DEFINE_SETSTATICFIELD(jint, int, Int, 'I', i
3194 , HOTSPOT_JNI_SETSTATICINTFIELD_ENTRY(env, clazz, (uintptr_t) fieldID, value),
3195 HOTSPOT_JNI_SETSTATICINTFIELD_RETURN())
3196 DEFINE_SETSTATICFIELD(jlong, long, Long, 'J', j
3197 , HOTSPOT_JNI_SETSTATICLONGFIELD_ENTRY(env, clazz, (uintptr_t) fieldID, value),
3198 HOTSPOT_JNI_SETSTATICLONGFIELD_RETURN())
3199 // Float and double probes don't return value because dtrace doesn't currently support it
3200 DEFINE_SETSTATICFIELD(jfloat, float, Float, 'F', f
3201 , HOTSPOT_JNI_SETSTATICFLOATFIELD_ENTRY(env, clazz, (uintptr_t) fieldID),
3202 HOTSPOT_JNI_SETSTATICFLOATFIELD_RETURN())
3203 DEFINE_SETSTATICFIELD(jdouble, double, Double, 'D', d
3204 , HOTSPOT_JNI_SETSTATICDOUBLEFIELD_ENTRY(env, clazz, (uintptr_t) fieldID),
3205 HOTSPOT_JNI_SETSTATICDOUBLEFIELD_RETURN())
3206 #endif /* USDT2 */
3207
3208 //
3209 // String Operations
3210 //
3211
3212 // Unicode Interface
3213
3214 #ifndef USDT2
3215 DT_RETURN_MARK_DECL(NewString, jstring);
3216 #else /* USDT2 */
3217 DT_RETURN_MARK_DECL(NewString, jstring
3218 , HOTSPOT_JNI_NEWSTRING_RETURN(_ret_ref));
3219 #endif /* USDT2 */
3220
3221 JNI_ENTRY(jstring, jni_NewString(JNIEnv *env, const jchar *unicodeChars, jsize len))
3222 JNIWrapper("NewString");
3223 #ifndef USDT2
3224 DTRACE_PROBE3(hotspot_jni, NewString__entry, env, unicodeChars, len);
3225 #else /* USDT2 */
3226 HOTSPOT_JNI_NEWSTRING_ENTRY(
3227 env, (uint16_t *) unicodeChars, len);
3228 #endif /* USDT2 */
3229 jstring ret = NULL;
3230 DT_RETURN_MARK(NewString, jstring, (const jstring&)ret);
3231 oop string=java_lang_String::create_oop_from_unicode((jchar*) unicodeChars, len, CHECK_NULL);
3232 ret = (jstring) JNIHandles::make_local(env, string);
3233 return ret;
3234 JNI_END
3235
3236
3237 JNI_QUICK_ENTRY(jsize, jni_GetStringLength(JNIEnv *env, jstring string))
3238 JNIWrapper("GetStringLength");
3239 #ifndef USDT2
3240 DTRACE_PROBE2(hotspot_jni, GetStringLength__entry, env, string);
3241 #else /* USDT2 */
3242 HOTSPOT_JNI_GETSTRINGLENGTH_ENTRY(
3243 env, string);
3244 #endif /* USDT2 */
3245 jsize ret = java_lang_String::length(JNIHandles::resolve_non_null(string));
3246 #ifndef USDT2
3247 DTRACE_PROBE1(hotspot_jni, GetStringLength__return, ret);
3248 #else /* USDT2 */
3249 HOTSPOT_JNI_GETSTRINGLENGTH_RETURN(
3250 ret);
3251 #endif /* USDT2 */
3252 return ret;
3253 JNI_END
3254
3255
3256 JNI_QUICK_ENTRY(const jchar*, jni_GetStringChars(
3257 JNIEnv *env, jstring string, jboolean *isCopy))
3258 JNIWrapper("GetStringChars");
3259 #ifndef USDT2
3260 DTRACE_PROBE3(hotspot_jni, GetStringChars__entry, env, string, isCopy);
3261 #else /* USDT2 */
3262 HOTSPOT_JNI_GETSTRINGCHARS_ENTRY(
3263 env, string, (uintptr_t *) isCopy);
3264 #endif /* USDT2 */
3265 //%note jni_5
3266 if (isCopy != NULL) {
3267 *isCopy = JNI_TRUE;
3268 }
3269 oop s = JNIHandles::resolve_non_null(string);
3270 int s_len = java_lang_String::length(s);
3271 typeArrayOop s_value = java_lang_String::value(s);
3272 int s_offset = java_lang_String::offset(s);
3273 jchar* buf = NEW_C_HEAP_ARRAY(jchar, s_len + 1, mtInternal); // add one for zero termination
3274 if (s_len > 0) {
3275 memcpy(buf, s_value->char_at_addr(s_offset), sizeof(jchar)*s_len);
3276 }
3277 buf[s_len] = 0;
3278 #ifndef USDT2
3279 DTRACE_PROBE1(hotspot_jni, GetStringChars__return, buf);
3280 #else /* USDT2 */
3281 HOTSPOT_JNI_GETSTRINGCHARS_RETURN(
3282 buf);
3283 #endif /* USDT2 */
3284 return buf;
3285 JNI_END
3286
3287
3288 JNI_QUICK_ENTRY(void, jni_ReleaseStringChars(JNIEnv *env, jstring str, const jchar *chars))
3289 JNIWrapper("ReleaseStringChars");
3290 #ifndef USDT2
3291 DTRACE_PROBE3(hotspot_jni, ReleaseStringChars__entry, env, str, chars);
3292 #else /* USDT2 */
3293 HOTSPOT_JNI_RELEASESTRINGCHARS_ENTRY(
3294 env, str, (uint16_t *) chars);
3295 #endif /* USDT2 */
3296 //%note jni_6
3297 if (chars != NULL) {
3298 // Since String objects are supposed to be immutable, don't copy any
3299 // new data back. A bad user will have to go after the char array.
3300 FreeHeap((void*) chars);
3301 }
3302 #ifndef USDT2
3303 DTRACE_PROBE(hotspot_jni, ReleaseStringChars__return);
3304 #else /* USDT2 */
3305 HOTSPOT_JNI_RELEASESTRINGCHARS_RETURN(
3306 );
3307 #endif /* USDT2 */
3308 JNI_END
3309
3310
3311 // UTF Interface
3312
3313 #ifndef USDT2
3314 DT_RETURN_MARK_DECL(NewStringUTF, jstring);
3315 #else /* USDT2 */
3316 DT_RETURN_MARK_DECL(NewStringUTF, jstring
3317 , HOTSPOT_JNI_NEWSTRINGUTF_RETURN(_ret_ref));
3318 #endif /* USDT2 */
3319
3320 JNI_ENTRY(jstring, jni_NewStringUTF(JNIEnv *env, const char *bytes))
3321 JNIWrapper("NewStringUTF");
3322 #ifndef USDT2
3323 DTRACE_PROBE2(hotspot_jni, NewStringUTF__entry, env, bytes);
3324 #else /* USDT2 */
3325 HOTSPOT_JNI_NEWSTRINGUTF_ENTRY(
3326 env, (char *) bytes);
3327 #endif /* USDT2 */
3328 jstring ret;
3329 DT_RETURN_MARK(NewStringUTF, jstring, (const jstring&)ret);
3330
3331 oop result = java_lang_String::create_oop_from_str((char*) bytes, CHECK_NULL);
3332 ret = (jstring) JNIHandles::make_local(env, result);
3333 return ret;
3334 JNI_END
3335
3336
3337 JNI_ENTRY(jsize, jni_GetStringUTFLength(JNIEnv *env, jstring string))
3338 JNIWrapper("GetStringUTFLength");
3339 #ifndef USDT2
3340 DTRACE_PROBE2(hotspot_jni, GetStringUTFLength__entry, env, string);
3341 #else /* USDT2 */
3342 HOTSPOT_JNI_GETSTRINGUTFLENGTH_ENTRY(
3343 env, string);
3344 #endif /* USDT2 */
3345 jsize ret = java_lang_String::utf8_length(JNIHandles::resolve_non_null(string));
3346 #ifndef USDT2
3347 DTRACE_PROBE1(hotspot_jni, GetStringUTFLength__return, ret);
3348 #else /* USDT2 */
3349 HOTSPOT_JNI_GETSTRINGUTFLENGTH_RETURN(
3350 ret);
3351 #endif /* USDT2 */
3352 return ret;
3353 JNI_END
3354
3355
3356 JNI_ENTRY(const char*, jni_GetStringUTFChars(JNIEnv *env, jstring string, jboolean *isCopy))
3357 JNIWrapper("GetStringUTFChars");
3358 #ifndef USDT2
3359 DTRACE_PROBE3(hotspot_jni, GetStringUTFChars__entry, env, string, isCopy);
3360 #else /* USDT2 */
3361 HOTSPOT_JNI_GETSTRINGUTFCHARS_ENTRY(
3362 env, string, (uintptr_t *) isCopy);
3363 #endif /* USDT2 */
3364 oop java_string = JNIHandles::resolve_non_null(string);
3365 size_t length = java_lang_String::utf8_length(java_string);
3366 char* result = AllocateHeap(length + 1, mtInternal);
3367 java_lang_String::as_utf8_string(java_string, result, (int) length + 1);
3368 if (isCopy != NULL) *isCopy = JNI_TRUE;
3369 #ifndef USDT2
3370 DTRACE_PROBE1(hotspot_jni, GetStringUTFChars__return, result);
3371 #else /* USDT2 */
3372 HOTSPOT_JNI_GETSTRINGUTFCHARS_RETURN(
3373 result);
3374 #endif /* USDT2 */
3375 return result;
3376 JNI_END
3377
3378
3379 JNI_LEAF(void, jni_ReleaseStringUTFChars(JNIEnv *env, jstring str, const char *chars))
3380 JNIWrapper("ReleaseStringUTFChars");
3381 #ifndef USDT2
3382 DTRACE_PROBE3(hotspot_jni, ReleaseStringUTFChars__entry, env, str, chars);
3383 #else /* USDT2 */
3384 HOTSPOT_JNI_RELEASESTRINGUTFCHARS_ENTRY(
3385 env, str, (char *) chars);
3386 #endif /* USDT2 */
3387 if (chars != NULL) {
3388 FreeHeap((char*) chars);
3389 }
3390 #ifndef USDT2
3391 DTRACE_PROBE(hotspot_jni, ReleaseStringUTFChars__return);
3392 #else /* USDT2 */
3393 HOTSPOT_JNI_RELEASESTRINGUTFCHARS_RETURN(
3394 );
3395 #endif /* USDT2 */
3396 JNI_END
3397
3398
3399 JNI_QUICK_ENTRY(jsize, jni_GetArrayLength(JNIEnv *env, jarray array))
3400 JNIWrapper("GetArrayLength");
3401 #ifndef USDT2
3402 DTRACE_PROBE2(hotspot_jni, GetArrayLength__entry, env, array);
3403 #else /* USDT2 */
3404 HOTSPOT_JNI_GETARRAYLENGTH_ENTRY(
3405 env, array);
3406 #endif /* USDT2 */
3407 arrayOop a = arrayOop(JNIHandles::resolve_non_null(array));
3408 assert(a->is_array(), "must be array");
3409 jsize ret = a->length();
3410 #ifndef USDT2
3411 DTRACE_PROBE1(hotspot_jni, GetArrayLength__return, ret);
3412 #else /* USDT2 */
3413 HOTSPOT_JNI_GETARRAYLENGTH_RETURN(
3414 ret);
3415 #endif /* USDT2 */
3416 return ret;
3417 JNI_END
3418
3419
3420 //
3421 // Object Array Operations
3422 //
3423
3424 #ifndef USDT2
3425 DT_RETURN_MARK_DECL(NewObjectArray, jobjectArray);
3426 #else /* USDT2 */
3427 DT_RETURN_MARK_DECL(NewObjectArray, jobjectArray
3428 , HOTSPOT_JNI_NEWOBJECTARRAY_RETURN(_ret_ref));
3429 #endif /* USDT2 */
3430
3431 JNI_ENTRY(jobjectArray, jni_NewObjectArray(JNIEnv *env, jsize length, jclass elementClass, jobject initialElement))
3432 JNIWrapper("NewObjectArray");
3433 #ifndef USDT2
3434 DTRACE_PROBE4(hotspot_jni, NewObjectArray__entry, env, length, elementClass, initialElement);
3435 #else /* USDT2 */
3436 HOTSPOT_JNI_NEWOBJECTARRAY_ENTRY(
3437 env, length, elementClass, initialElement);
3438 #endif /* USDT2 */
3439 jobjectArray ret = NULL;
3440 DT_RETURN_MARK(NewObjectArray, jobjectArray, (const jobjectArray&)ret);
3441 KlassHandle ek(THREAD, java_lang_Class::as_Klass(JNIHandles::resolve_non_null(elementClass)));
3442 Klass* ako = Klass::cast(ek())->array_klass(CHECK_NULL);
3443 KlassHandle ak = KlassHandle(THREAD, ako);
3444 ObjArrayKlass::cast(ak())->initialize(CHECK_NULL);
3445 objArrayOop result = ObjArrayKlass::cast(ak())->allocate(length, CHECK_NULL);
3446 oop initial_value = JNIHandles::resolve(initialElement);
3447 if (initial_value != NULL) { // array already initialized with NULL
3448 for (int index = 0; index < length; index++) {
3449 result->obj_at_put(index, initial_value);
3450 }
3451 }
3452 ret = (jobjectArray) JNIHandles::make_local(env, result);
3453 return ret;
3454 JNI_END
3455
3456 #ifndef USDT2
3457 DT_RETURN_MARK_DECL(GetObjectArrayElement, jobject);
3458 #else /* USDT2 */
3459 DT_RETURN_MARK_DECL(GetObjectArrayElement, jobject
3460 , HOTSPOT_JNI_GETOBJECTARRAYELEMENT_RETURN(_ret_ref));
3461 #endif /* USDT2 */
3462
3463 JNI_ENTRY(jobject, jni_GetObjectArrayElement(JNIEnv *env, jobjectArray array, jsize index))
3464 JNIWrapper("GetObjectArrayElement");
3465 #ifndef USDT2
3466 DTRACE_PROBE3(hotspot_jni, GetObjectArrayElement__entry, env, array, index);
3467 #else /* USDT2 */
3468 HOTSPOT_JNI_GETOBJECTARRAYELEMENT_ENTRY(
3469 env, array, index);
3470 #endif /* USDT2 */
3471 jobject ret = NULL;
3472 DT_RETURN_MARK(GetObjectArrayElement, jobject, (const jobject&)ret);
3473 objArrayOop a = objArrayOop(JNIHandles::resolve_non_null(array));
3474 if (a->is_within_bounds(index)) {
3475 ret = JNIHandles::make_local(env, a->obj_at(index));
3476 return ret;
3477 } else {
3478 char buf[jintAsStringSize];
3479 sprintf(buf, "%d", index);
3480 THROW_MSG_0(vmSymbols::java_lang_ArrayIndexOutOfBoundsException(), buf);
3481 }
3482 JNI_END
3483
3484 #ifndef USDT2
3485 DT_VOID_RETURN_MARK_DECL(SetObjectArrayElement);
3486 #else /* USDT2 */
3487 DT_VOID_RETURN_MARK_DECL(SetObjectArrayElement
3488 , HOTSPOT_JNI_SETOBJECTARRAYELEMENT_RETURN());
3489 #endif /* USDT2 */
3490
3491 JNI_ENTRY(void, jni_SetObjectArrayElement(JNIEnv *env, jobjectArray array, jsize index, jobject value))
3492 JNIWrapper("SetObjectArrayElement");
3493 #ifndef USDT2
3494 DTRACE_PROBE4(hotspot_jni, SetObjectArrayElement__entry, env, array, index, value);
3495 #else /* USDT2 */
3496 HOTSPOT_JNI_SETOBJECTARRAYELEMENT_ENTRY(
3497 env, array, index, value);
3498 #endif /* USDT2 */
3499 DT_VOID_RETURN_MARK(SetObjectArrayElement);
3500
3501 objArrayOop a = objArrayOop(JNIHandles::resolve_non_null(array));
3502 oop v = JNIHandles::resolve(value);
3503 if (a->is_within_bounds(index)) {
3504 if (v == NULL || v->is_a(ObjArrayKlass::cast(a->klass())->element_klass())) {
3505 a->obj_at_put(index, v);
3506 } else {
3507 THROW(vmSymbols::java_lang_ArrayStoreException());
3508 }
3509 } else {
3510 char buf[jintAsStringSize];
3511 sprintf(buf, "%d", index);
3512 THROW_MSG(vmSymbols::java_lang_ArrayIndexOutOfBoundsException(), buf);
3513 }
3514 JNI_END
3515
3516
3517 #ifndef USDT2
3518 #define DEFINE_NEWSCALARARRAY(Return,Allocator,Result) \
3519 \
3520 DT_RETURN_MARK_DECL(New##Result##Array, Return); \
3521 \
3522 JNI_ENTRY(Return, \
3523 jni_New##Result##Array(JNIEnv *env, jsize len)) \
3524 JNIWrapper("New" XSTR(Result) "Array"); \
3525 DTRACE_PROBE2(hotspot_jni, New##Result##Array__entry, env, len);\
3526 Return ret = NULL;\
3527 DT_RETURN_MARK(New##Result##Array, Return, (const Return&)ret);\
3528 \
3529 oop obj= oopFactory::Allocator(len, CHECK_0); \
3530 ret = (Return) JNIHandles::make_local(env, obj); \
3531 return ret;\
3532 JNI_END
3533
3534 DEFINE_NEWSCALARARRAY(jbooleanArray, new_boolArray, Boolean)
3535 DEFINE_NEWSCALARARRAY(jbyteArray, new_byteArray, Byte)
3536 DEFINE_NEWSCALARARRAY(jshortArray, new_shortArray, Short)
3537 DEFINE_NEWSCALARARRAY(jcharArray, new_charArray, Char)
3538 DEFINE_NEWSCALARARRAY(jintArray, new_intArray, Int)
3539 DEFINE_NEWSCALARARRAY(jlongArray, new_longArray, Long)
3540 DEFINE_NEWSCALARARRAY(jfloatArray, new_singleArray, Float)
3541 DEFINE_NEWSCALARARRAY(jdoubleArray, new_doubleArray, Double)
3542
3543 #else /* USDT2 */
3544
3545 #define DEFINE_NEWSCALARARRAY(Return,Allocator,Result \
3546 ,EntryProbe,ReturnProbe) \
3547 \
3548 DT_RETURN_MARK_DECL(New##Result##Array, Return \
3549 , ReturnProbe); \
3550 \
3551 JNI_ENTRY(Return, \
3552 jni_New##Result##Array(JNIEnv *env, jsize len)) \
3553 JNIWrapper("New" XSTR(Result) "Array"); \
3554 EntryProbe; \
3555 Return ret = NULL;\
3556 DT_RETURN_MARK(New##Result##Array, Return, (const Return&)ret);\
3557 \
3558 oop obj= oopFactory::Allocator(len, CHECK_0); \
3559 ret = (Return) JNIHandles::make_local(env, obj); \
3560 return ret;\
3561 JNI_END
3562
3563 DEFINE_NEWSCALARARRAY(jbooleanArray, new_boolArray, Boolean,
3564 HOTSPOT_JNI_NEWBOOLEANARRAY_ENTRY(env, len),
3565 HOTSPOT_JNI_NEWBOOLEANARRAY_RETURN(_ret_ref))
3566 DEFINE_NEWSCALARARRAY(jbyteArray, new_byteArray, Byte,
3567 HOTSPOT_JNI_NEWBYTEARRAY_ENTRY(env, len),
3568 HOTSPOT_JNI_NEWBYTEARRAY_RETURN(_ret_ref))
3569 DEFINE_NEWSCALARARRAY(jshortArray, new_shortArray, Short,
3570 HOTSPOT_JNI_NEWSHORTARRAY_ENTRY(env, len),
3571 HOTSPOT_JNI_NEWSHORTARRAY_RETURN(_ret_ref))
3572 DEFINE_NEWSCALARARRAY(jcharArray, new_charArray, Char,
3573 HOTSPOT_JNI_NEWCHARARRAY_ENTRY(env, len),
3574 HOTSPOT_JNI_NEWCHARARRAY_RETURN(_ret_ref))
3575 DEFINE_NEWSCALARARRAY(jintArray, new_intArray, Int,
3576 HOTSPOT_JNI_NEWINTARRAY_ENTRY(env, len),
3577 HOTSPOT_JNI_NEWINTARRAY_RETURN(_ret_ref))
3578 DEFINE_NEWSCALARARRAY(jlongArray, new_longArray, Long,
3579 HOTSPOT_JNI_NEWLONGARRAY_ENTRY(env, len),
3580 HOTSPOT_JNI_NEWLONGARRAY_RETURN(_ret_ref))
3581 DEFINE_NEWSCALARARRAY(jfloatArray, new_singleArray, Float,
3582 HOTSPOT_JNI_NEWFLOATARRAY_ENTRY(env, len),
3583 HOTSPOT_JNI_NEWFLOATARRAY_RETURN(_ret_ref))
3584 DEFINE_NEWSCALARARRAY(jdoubleArray, new_doubleArray, Double,
3585 HOTSPOT_JNI_NEWDOUBLEARRAY_ENTRY(env, len),
3586 HOTSPOT_JNI_NEWDOUBLEARRAY_RETURN(_ret_ref))
3587 #endif /* USDT2 */
3588
3589 // Return an address which will fault if the caller writes to it.
3590
3591 static char* get_bad_address() {
3592 static char* bad_address = NULL;
3593 if (bad_address == NULL) {
3594 size_t size = os::vm_allocation_granularity();
3595 bad_address = os::reserve_memory(size);
3596 if (bad_address != NULL) {
3597 os::protect_memory(bad_address, size, os::MEM_PROT_READ,
3598 /*is_committed*/false);
3599 }
3600 }
3601 return bad_address;
3602 }
3603
3604
3605 #ifndef USDT2
3606 #define DEFINE_GETSCALARARRAYELEMENTS(ElementTag,ElementType,Result, Tag) \
3607 \
3608 JNI_QUICK_ENTRY(ElementType*, \
3609 jni_Get##Result##ArrayElements(JNIEnv *env, ElementType##Array array, jboolean *isCopy)) \
3610 JNIWrapper("Get" XSTR(Result) "ArrayElements"); \
3611 DTRACE_PROBE3(hotspot_jni, Get##Result##ArrayElements__entry, env, array, isCopy);\
3612 /* allocate an chunk of memory in c land */ \
3613 typeArrayOop a = typeArrayOop(JNIHandles::resolve_non_null(array)); \
3614 ElementType* result; \
3615 int len = a->length(); \
3616 if (len == 0) { \
3617 /* Empty array: legal but useless, can't return NULL. \
3618 * Return a pointer to something useless. \
3619 * Avoid asserts in typeArrayOop. */ \
3620 result = (ElementType*)get_bad_address(); \
3621 } else { \
3622 result = NEW_C_HEAP_ARRAY(ElementType, len, mtInternal); \
3623 /* copy the array to the c chunk */ \
3624 memcpy(result, a->Tag##_at_addr(0), sizeof(ElementType)*len); \
3625 } \
3626 if (isCopy) *isCopy = JNI_TRUE; \
3627 DTRACE_PROBE1(hotspot_jni, Get##Result##ArrayElements__return, result);\
3628 return result; \
3629 JNI_END
3630
3631 DEFINE_GETSCALARARRAYELEMENTS(T_BOOLEAN, jboolean, Boolean, bool)
3632 DEFINE_GETSCALARARRAYELEMENTS(T_BYTE, jbyte, Byte, byte)
3633 DEFINE_GETSCALARARRAYELEMENTS(T_SHORT, jshort, Short, short)
3634 DEFINE_GETSCALARARRAYELEMENTS(T_CHAR, jchar, Char, char)
3635 DEFINE_GETSCALARARRAYELEMENTS(T_INT, jint, Int, int)
3636 DEFINE_GETSCALARARRAYELEMENTS(T_LONG, jlong, Long, long)
3637 DEFINE_GETSCALARARRAYELEMENTS(T_FLOAT, jfloat, Float, float)
3638 DEFINE_GETSCALARARRAYELEMENTS(T_DOUBLE, jdouble, Double, double)
3639
3640 #else /* USDT2 */
3641
3642 #define DEFINE_GETSCALARARRAYELEMENTS(ElementTag,ElementType,Result, Tag \
3643 , EntryProbe, ReturnProbe) \
3644 \
3645 JNI_QUICK_ENTRY(ElementType*, \
3646 jni_Get##Result##ArrayElements(JNIEnv *env, ElementType##Array array, jboolean *isCopy)) \
3647 JNIWrapper("Get" XSTR(Result) "ArrayElements"); \
3648 EntryProbe; \
3649 /* allocate an chunk of memory in c land */ \
3650 typeArrayOop a = typeArrayOop(JNIHandles::resolve_non_null(array)); \
3651 ElementType* result; \
3652 int len = a->length(); \
3653 if (len == 0) { \
3654 /* Empty array: legal but useless, can't return NULL. \
3655 * Return a pointer to something useless. \
3656 * Avoid asserts in typeArrayOop. */ \
3657 result = (ElementType*)get_bad_address(); \
3658 } else { \
3659 result = NEW_C_HEAP_ARRAY(ElementType, len, mtInternal); \
3660 /* copy the array to the c chunk */ \
3661 memcpy(result, a->Tag##_at_addr(0), sizeof(ElementType)*len); \
3662 } \
3663 if (isCopy) *isCopy = JNI_TRUE; \
3664 ReturnProbe; \
3665 return result; \
3666 JNI_END
3667
3668 DEFINE_GETSCALARARRAYELEMENTS(T_BOOLEAN, jboolean, Boolean, bool
3669 , HOTSPOT_JNI_GETBOOLEANARRAYELEMENTS_ENTRY(env, array, (uintptr_t *) isCopy),
3670 HOTSPOT_JNI_GETBOOLEANARRAYELEMENTS_RETURN((uintptr_t*)result))
3671 DEFINE_GETSCALARARRAYELEMENTS(T_BYTE, jbyte, Byte, byte
3672 , HOTSPOT_JNI_GETBYTEARRAYELEMENTS_ENTRY(env, array, (uintptr_t *) isCopy),
3673 HOTSPOT_JNI_GETBYTEARRAYELEMENTS_RETURN((char*)result))
3674 DEFINE_GETSCALARARRAYELEMENTS(T_SHORT, jshort, Short, short
3675 , HOTSPOT_JNI_GETSHORTARRAYELEMENTS_ENTRY(env, (uint16_t*) array, (uintptr_t *) isCopy),
3676 HOTSPOT_JNI_GETSHORTARRAYELEMENTS_RETURN((uint16_t*)result))
3677 DEFINE_GETSCALARARRAYELEMENTS(T_CHAR, jchar, Char, char
3678 , HOTSPOT_JNI_GETCHARARRAYELEMENTS_ENTRY(env, (uint16_t*) array, (uintptr_t *) isCopy),
3679 HOTSPOT_JNI_GETCHARARRAYELEMENTS_RETURN(result))
3680 DEFINE_GETSCALARARRAYELEMENTS(T_INT, jint, Int, int
3681 , HOTSPOT_JNI_GETINTARRAYELEMENTS_ENTRY(env, array, (uintptr_t *) isCopy),
3682 HOTSPOT_JNI_GETINTARRAYELEMENTS_RETURN((uint32_t*)result))
3683 DEFINE_GETSCALARARRAYELEMENTS(T_LONG, jlong, Long, long
3684 , HOTSPOT_JNI_GETLONGARRAYELEMENTS_ENTRY(env, array, (uintptr_t *) isCopy),
3685 HOTSPOT_JNI_GETLONGARRAYELEMENTS_RETURN(((uintptr_t*)result)))
3686 // Float and double probes don't return value because dtrace doesn't currently support it
3687 DEFINE_GETSCALARARRAYELEMENTS(T_FLOAT, jfloat, Float, float
3688 , HOTSPOT_JNI_GETFLOATARRAYELEMENTS_ENTRY(env, array, (uintptr_t *) isCopy),
3689 HOTSPOT_JNI_GETFLOATARRAYELEMENTS_RETURN(result))
3690 DEFINE_GETSCALARARRAYELEMENTS(T_DOUBLE, jdouble, Double, double
3691 , HOTSPOT_JNI_GETDOUBLEARRAYELEMENTS_ENTRY(env, array, (uintptr_t *) isCopy),
3692 HOTSPOT_JNI_GETDOUBLEARRAYELEMENTS_RETURN(result))
3693 #endif /* USDT2 */
3694
3695 #ifndef USDT2
3696 #define DEFINE_RELEASESCALARARRAYELEMENTS(ElementTag,ElementType,Result,Tag) \
3697 \
3698 JNI_QUICK_ENTRY(void, \
3699 jni_Release##Result##ArrayElements(JNIEnv *env, ElementType##Array array, \
3700 ElementType *buf, jint mode)) \
3701 JNIWrapper("Release" XSTR(Result) "ArrayElements"); \
3702 DTRACE_PROBE4(hotspot_jni, Release##Result##ArrayElements__entry, env, array, buf, mode);\
3703 typeArrayOop a = typeArrayOop(JNIHandles::resolve_non_null(array)); \
3704 int len = a->length(); \
3705 if (len != 0) { /* Empty array: nothing to free or copy. */ \
3706 if ((mode == 0) || (mode == JNI_COMMIT)) { \
3707 memcpy(a->Tag##_at_addr(0), buf, sizeof(ElementType)*len); \
3708 } \
3709 if ((mode == 0) || (mode == JNI_ABORT)) { \
3710 FreeHeap(buf); \
3711 } \
3712 } \
3713 DTRACE_PROBE(hotspot_jni, Release##Result##ArrayElements__return);\
3714 JNI_END
3715
3716 DEFINE_RELEASESCALARARRAYELEMENTS(T_BOOLEAN, jboolean, Boolean, bool)
3717 DEFINE_RELEASESCALARARRAYELEMENTS(T_BYTE, jbyte, Byte, byte)
3718 DEFINE_RELEASESCALARARRAYELEMENTS(T_SHORT, jshort, Short, short)
3719 DEFINE_RELEASESCALARARRAYELEMENTS(T_CHAR, jchar, Char, char)
3720 DEFINE_RELEASESCALARARRAYELEMENTS(T_INT, jint, Int, int)
3721 DEFINE_RELEASESCALARARRAYELEMENTS(T_LONG, jlong, Long, long)
3722 DEFINE_RELEASESCALARARRAYELEMENTS(T_FLOAT, jfloat, Float, float)
3723 DEFINE_RELEASESCALARARRAYELEMENTS(T_DOUBLE, jdouble, Double, double)
3724
3725 #else /* USDT2 */
3726
3727 #define DEFINE_RELEASESCALARARRAYELEMENTS(ElementTag,ElementType,Result,Tag \
3728 , EntryProbe, ReturnProbe);\
3729 \
3730 JNI_QUICK_ENTRY(void, \
3731 jni_Release##Result##ArrayElements(JNIEnv *env, ElementType##Array array, \
3732 ElementType *buf, jint mode)) \
3733 JNIWrapper("Release" XSTR(Result) "ArrayElements"); \
3734 EntryProbe; \
3735 typeArrayOop a = typeArrayOop(JNIHandles::resolve_non_null(array)); \
3736 int len = a->length(); \
3737 if (len != 0) { /* Empty array: nothing to free or copy. */ \
3738 if ((mode == 0) || (mode == JNI_COMMIT)) { \
3739 memcpy(a->Tag##_at_addr(0), buf, sizeof(ElementType)*len); \
3740 } \
3741 if ((mode == 0) || (mode == JNI_ABORT)) { \
3742 FreeHeap(buf); \
3743 } \
3744 } \
3745 ReturnProbe; \
3746 JNI_END
3747
3748 DEFINE_RELEASESCALARARRAYELEMENTS(T_BOOLEAN, jboolean, Boolean, bool
3749 , HOTSPOT_JNI_RELEASEBOOLEANARRAYELEMENTS_ENTRY(env, array, (uintptr_t *) buf, mode),
3750 HOTSPOT_JNI_RELEASEBOOLEANARRAYELEMENTS_RETURN())
3751 DEFINE_RELEASESCALARARRAYELEMENTS(T_BYTE, jbyte, Byte, byte
3752 , HOTSPOT_JNI_RELEASEBYTEARRAYELEMENTS_ENTRY(env, array, (char *) buf, mode),
3753 HOTSPOT_JNI_RELEASEBYTEARRAYELEMENTS_RETURN())
3754 DEFINE_RELEASESCALARARRAYELEMENTS(T_SHORT, jshort, Short, short
3755 , HOTSPOT_JNI_RELEASESHORTARRAYELEMENTS_ENTRY(env, array, (uint16_t *) buf, mode),
3756 HOTSPOT_JNI_RELEASESHORTARRAYELEMENTS_RETURN())
3757 DEFINE_RELEASESCALARARRAYELEMENTS(T_CHAR, jchar, Char, char
3758 , HOTSPOT_JNI_RELEASECHARARRAYELEMENTS_ENTRY(env, array, (uint16_t *) buf, mode),
3759 HOTSPOT_JNI_RELEASECHARARRAYELEMENTS_RETURN())
3760 DEFINE_RELEASESCALARARRAYELEMENTS(T_INT, jint, Int, int
3761 , HOTSPOT_JNI_RELEASEINTARRAYELEMENTS_ENTRY(env, array, (uint32_t *) buf, mode),
3762 HOTSPOT_JNI_RELEASEINTARRAYELEMENTS_RETURN())
3763 DEFINE_RELEASESCALARARRAYELEMENTS(T_LONG, jlong, Long, long
3764 , HOTSPOT_JNI_RELEASELONGARRAYELEMENTS_ENTRY(env, array, (uintptr_t *) buf, mode),
3765 HOTSPOT_JNI_RELEASELONGARRAYELEMENTS_RETURN())
3766 DEFINE_RELEASESCALARARRAYELEMENTS(T_FLOAT, jfloat, Float, float
3767 , HOTSPOT_JNI_RELEASEFLOATARRAYELEMENTS_ENTRY(env, array, (float *) buf, mode),
3768 HOTSPOT_JNI_RELEASEFLOATARRAYELEMENTS_RETURN())
3769 DEFINE_RELEASESCALARARRAYELEMENTS(T_DOUBLE, jdouble, Double, double
3770 , HOTSPOT_JNI_RELEASEDOUBLEARRAYELEMENTS_ENTRY(env, array, (double *) buf, mode),
3771 HOTSPOT_JNI_RELEASEDOUBLEARRAYELEMENTS_RETURN())
3772 #endif /* USDT2 */
3773
3774 #ifndef USDT2
3775 #define DEFINE_GETSCALARARRAYREGION(ElementTag,ElementType,Result, Tag) \
3776 DT_VOID_RETURN_MARK_DECL(Get##Result##ArrayRegion);\
3777 \
3778 JNI_ENTRY(void, \
3779 jni_Get##Result##ArrayRegion(JNIEnv *env, ElementType##Array array, jsize start, \
3780 jsize len, ElementType *buf)) \
3781 JNIWrapper("Get" XSTR(Result) "ArrayRegion"); \
3782 DTRACE_PROBE5(hotspot_jni, Get##Result##ArrayRegion__entry, env, array, start, len, buf);\
3783 DT_VOID_RETURN_MARK(Get##Result##ArrayRegion); \
3784 typeArrayOop src = typeArrayOop(JNIHandles::resolve_non_null(array)); \
3785 if (start < 0 || len < 0 || ((unsigned int)start + (unsigned int)len > (unsigned int)src->length())) { \
3786 THROW(vmSymbols::java_lang_ArrayIndexOutOfBoundsException()); \
3787 } else { \
3788 if (len > 0) { \
3789 int sc = TypeArrayKlass::cast(src->klass())->log2_element_size(); \
3790 memcpy((u_char*) buf, \
3791 (u_char*) src->Tag##_at_addr(start), \
3792 len << sc); \
3793 } \
3794 } \
3795 JNI_END
3796
3797 DEFINE_GETSCALARARRAYREGION(T_BOOLEAN, jboolean,Boolean, bool)
3798 DEFINE_GETSCALARARRAYREGION(T_BYTE, jbyte, Byte, byte)
3799 DEFINE_GETSCALARARRAYREGION(T_SHORT, jshort, Short, short)
3800 DEFINE_GETSCALARARRAYREGION(T_CHAR, jchar, Char, char)
3801 DEFINE_GETSCALARARRAYREGION(T_INT, jint, Int, int)
3802 DEFINE_GETSCALARARRAYREGION(T_LONG, jlong, Long, long)
3803 DEFINE_GETSCALARARRAYREGION(T_FLOAT, jfloat, Float, float)
3804 DEFINE_GETSCALARARRAYREGION(T_DOUBLE, jdouble, Double, double)
3805
3806 #else /* USDT2 */
3807
3808 #define DEFINE_GETSCALARARRAYREGION(ElementTag,ElementType,Result, Tag \
3809 , EntryProbe, ReturnProbe); \
3810 DT_VOID_RETURN_MARK_DECL(Get##Result##ArrayRegion \
3811 , ReturnProbe); \
3812 \
3813 JNI_ENTRY(void, \
3814 jni_Get##Result##ArrayRegion(JNIEnv *env, ElementType##Array array, jsize start, \
3815 jsize len, ElementType *buf)) \
3816 JNIWrapper("Get" XSTR(Result) "ArrayRegion"); \
3817 EntryProbe; \
3818 DT_VOID_RETURN_MARK(Get##Result##ArrayRegion); \
3819 typeArrayOop src = typeArrayOop(JNIHandles::resolve_non_null(array)); \
3820 if (start < 0 || len < 0 || ((unsigned int)start + (unsigned int)len > (unsigned int)src->length())) { \
3821 THROW(vmSymbols::java_lang_ArrayIndexOutOfBoundsException()); \
3822 } else { \
3823 if (len > 0) { \
3824 int sc = TypeArrayKlass::cast(src->klass())->log2_element_size(); \
3825 memcpy((u_char*) buf, \
3826 (u_char*) src->Tag##_at_addr(start), \
3827 len << sc); \
3828 } \
3829 } \
3830 JNI_END
3831
3832 DEFINE_GETSCALARARRAYREGION(T_BOOLEAN, jboolean,Boolean, bool
3833 , HOTSPOT_JNI_GETBOOLEANARRAYREGION_ENTRY(env, array, start, len, (uintptr_t *) buf),
3834 HOTSPOT_JNI_GETBOOLEANARRAYREGION_RETURN());
3835 DEFINE_GETSCALARARRAYREGION(T_BYTE, jbyte, Byte, byte
3836 , HOTSPOT_JNI_GETBYTEARRAYREGION_ENTRY(env, array, start, len, (char *) buf),
3837 HOTSPOT_JNI_GETBYTEARRAYREGION_RETURN());
3838 DEFINE_GETSCALARARRAYREGION(T_SHORT, jshort, Short, short
3839 , HOTSPOT_JNI_GETSHORTARRAYREGION_ENTRY(env, array, start, len, (uint16_t *) buf),
3840 HOTSPOT_JNI_GETSHORTARRAYREGION_RETURN());
3841 DEFINE_GETSCALARARRAYREGION(T_CHAR, jchar, Char, char
3842 , HOTSPOT_JNI_GETCHARARRAYREGION_ENTRY(env, array, start, len, (uint16_t*) buf),
3843 HOTSPOT_JNI_GETCHARARRAYREGION_RETURN());
3844 DEFINE_GETSCALARARRAYREGION(T_INT, jint, Int, int
3845 , HOTSPOT_JNI_GETINTARRAYREGION_ENTRY(env, array, start, len, (uint32_t*) buf),
3846 HOTSPOT_JNI_GETINTARRAYREGION_RETURN());
3847 DEFINE_GETSCALARARRAYREGION(T_LONG, jlong, Long, long
3848 , HOTSPOT_JNI_GETLONGARRAYREGION_ENTRY(env, array, start, len, (uintptr_t *) buf),
3849 HOTSPOT_JNI_GETLONGARRAYREGION_RETURN());
3850 DEFINE_GETSCALARARRAYREGION(T_FLOAT, jfloat, Float, float
3851 , HOTSPOT_JNI_GETFLOATARRAYREGION_ENTRY(env, array, start, len, (float *) buf),
3852 HOTSPOT_JNI_GETFLOATARRAYREGION_RETURN());
3853 DEFINE_GETSCALARARRAYREGION(T_DOUBLE, jdouble, Double, double
3854 , HOTSPOT_JNI_GETDOUBLEARRAYREGION_ENTRY(env, array, start, len, (double *) buf),
3855 HOTSPOT_JNI_GETDOUBLEARRAYREGION_RETURN());
3856 #endif /* USDT2 */
3857
3858 #ifndef USDT2
3859 #define DEFINE_SETSCALARARRAYREGION(ElementTag,ElementType,Result, Tag) \
3860 DT_VOID_RETURN_MARK_DECL(Set##Result##ArrayRegion);\
3861 \
3862 JNI_ENTRY(void, \
3863 jni_Set##Result##ArrayRegion(JNIEnv *env, ElementType##Array array, jsize start, \
3864 jsize len, const ElementType *buf)) \
3865 JNIWrapper("Set" XSTR(Result) "ArrayRegion"); \
3866 DTRACE_PROBE5(hotspot_jni, Set##Result##ArrayRegion__entry, env, array, start, len, buf);\
3867 DT_VOID_RETURN_MARK(Set##Result##ArrayRegion); \
3868 typeArrayOop dst = typeArrayOop(JNIHandles::resolve_non_null(array)); \
3869 if (start < 0 || len < 0 || ((unsigned int)start + (unsigned int)len > (unsigned int)dst->length())) { \
3870 THROW(vmSymbols::java_lang_ArrayIndexOutOfBoundsException()); \
3871 } else { \
3872 if (len > 0) { \
3873 int sc = TypeArrayKlass::cast(dst->klass())->log2_element_size(); \
3874 memcpy((u_char*) dst->Tag##_at_addr(start), \
3875 (u_char*) buf, \
3876 len << sc); \
3877 } \
3878 } \
3879 JNI_END
3880
3881 DEFINE_SETSCALARARRAYREGION(T_BOOLEAN, jboolean, Boolean, bool)
3882 DEFINE_SETSCALARARRAYREGION(T_BYTE, jbyte, Byte, byte)
3883 DEFINE_SETSCALARARRAYREGION(T_SHORT, jshort, Short, short)
3884 DEFINE_SETSCALARARRAYREGION(T_CHAR, jchar, Char, char)
3885 DEFINE_SETSCALARARRAYREGION(T_INT, jint, Int, int)
3886 DEFINE_SETSCALARARRAYREGION(T_LONG, jlong, Long, long)
3887 DEFINE_SETSCALARARRAYREGION(T_FLOAT, jfloat, Float, float)
3888 DEFINE_SETSCALARARRAYREGION(T_DOUBLE, jdouble, Double, double)
3889
3890 #else /* USDT2 */
3891
3892 #define DEFINE_SETSCALARARRAYREGION(ElementTag,ElementType,Result, Tag \
3893 , EntryProbe, ReturnProbe); \
3894 DT_VOID_RETURN_MARK_DECL(Set##Result##ArrayRegion \
3895 ,ReturnProbe); \
3896 \
3897 JNI_ENTRY(void, \
3898 jni_Set##Result##ArrayRegion(JNIEnv *env, ElementType##Array array, jsize start, \
3899 jsize len, const ElementType *buf)) \
3900 JNIWrapper("Set" XSTR(Result) "ArrayRegion"); \
3901 EntryProbe; \
3902 DT_VOID_RETURN_MARK(Set##Result##ArrayRegion); \
3903 typeArrayOop dst = typeArrayOop(JNIHandles::resolve_non_null(array)); \
3904 if (start < 0 || len < 0 || ((unsigned int)start + (unsigned int)len > (unsigned int)dst->length())) { \
3905 THROW(vmSymbols::java_lang_ArrayIndexOutOfBoundsException()); \
3906 } else { \
3907 if (len > 0) { \
3908 int sc = TypeArrayKlass::cast(dst->klass())->log2_element_size(); \
3909 memcpy((u_char*) dst->Tag##_at_addr(start), \
3910 (u_char*) buf, \
3911 len << sc); \
3912 } \
3913 } \
3914 JNI_END
3915
3916 DEFINE_SETSCALARARRAYREGION(T_BOOLEAN, jboolean, Boolean, bool
3917 , HOTSPOT_JNI_SETBOOLEANARRAYREGION_ENTRY(env, array, start, len, (uintptr_t *)buf),
3918 HOTSPOT_JNI_SETBOOLEANARRAYREGION_RETURN())
3919 DEFINE_SETSCALARARRAYREGION(T_BYTE, jbyte, Byte, byte
3920 , HOTSPOT_JNI_SETBYTEARRAYREGION_ENTRY(env, array, start, len, (char *) buf),
3921 HOTSPOT_JNI_SETBYTEARRAYREGION_RETURN())
3922 DEFINE_SETSCALARARRAYREGION(T_SHORT, jshort, Short, short
3923 , HOTSPOT_JNI_SETSHORTARRAYREGION_ENTRY(env, array, start, len, (uint16_t *) buf),
3924 HOTSPOT_JNI_SETSHORTARRAYREGION_RETURN())
3925 DEFINE_SETSCALARARRAYREGION(T_CHAR, jchar, Char, char
3926 , HOTSPOT_JNI_SETCHARARRAYREGION_ENTRY(env, array, start, len, (uint16_t *) buf),
3927 HOTSPOT_JNI_SETCHARARRAYREGION_RETURN())
3928 DEFINE_SETSCALARARRAYREGION(T_INT, jint, Int, int
3929 , HOTSPOT_JNI_SETINTARRAYREGION_ENTRY(env, array, start, len, (uint32_t *) buf),
3930 HOTSPOT_JNI_SETINTARRAYREGION_RETURN())
3931 DEFINE_SETSCALARARRAYREGION(T_LONG, jlong, Long, long
3932 , HOTSPOT_JNI_SETLONGARRAYREGION_ENTRY(env, array, start, len, (uintptr_t *) buf),
3933 HOTSPOT_JNI_SETLONGARRAYREGION_RETURN())
3934 DEFINE_SETSCALARARRAYREGION(T_FLOAT, jfloat, Float, float
3935 , HOTSPOT_JNI_SETFLOATARRAYREGION_ENTRY(env, array, start, len, (float *) buf),
3936 HOTSPOT_JNI_SETFLOATARRAYREGION_RETURN())
3937 DEFINE_SETSCALARARRAYREGION(T_DOUBLE, jdouble, Double, double
3938 , HOTSPOT_JNI_SETDOUBLEARRAYREGION_ENTRY(env, array, start, len, (double *) buf),
3939 HOTSPOT_JNI_SETDOUBLEARRAYREGION_RETURN())
3940 #endif /* USDT2 */
3941
3942
3943 //
3944 // Interception of natives
3945 //
3946
3947 // The RegisterNatives call being attempted tried to register with a method that
3948 // is not native. Ask JVM TI what prefixes have been specified. Then check
3949 // to see if the native method is now wrapped with the prefixes. See the
3950 // SetNativeMethodPrefix(es) functions in the JVM TI Spec for details.
3951 static Method* find_prefixed_native(KlassHandle k,
3952 Symbol* name, Symbol* signature, TRAPS) {
3953 #if INCLUDE_JVMTI
3954 ResourceMark rm(THREAD);
3955 Method* method;
3956 int name_len = name->utf8_length();
3957 char* name_str = name->as_utf8();
3958 int prefix_count;
3959 char** prefixes = JvmtiExport::get_all_native_method_prefixes(&prefix_count);
3960 for (int i = 0; i < prefix_count; i++) {
3961 char* prefix = prefixes[i];
3962 int prefix_len = (int)strlen(prefix);
3963
3964 // try adding this prefix to the method name and see if it matches another method name
3965 int trial_len = name_len + prefix_len;
3966 char* trial_name_str = NEW_RESOURCE_ARRAY(char, trial_len + 1);
3967 strcpy(trial_name_str, prefix);
3968 strcat(trial_name_str, name_str);
3969 TempNewSymbol trial_name = SymbolTable::probe(trial_name_str, trial_len);
3970 if (trial_name == NULL) {
3971 continue; // no such symbol, so this prefix wasn't used, try the next prefix
3972 }
3973 method = Klass::cast(k())->lookup_method(trial_name, signature);
3974 if (method == NULL) {
3975 continue; // signature doesn't match, try the next prefix
3976 }
3977 if (method->is_native()) {
3978 method->set_is_prefixed_native();
3979 return method; // wahoo, we found a prefixed version of the method, return it
3980 }
3981 // found as non-native, so prefix is good, add it, probably just need more prefixes
3982 name_len = trial_len;
3983 name_str = trial_name_str;
3984 }
3985 #endif // INCLUDE_JVMTI
3986 return NULL; // not found
3987 }
3988
3989 static bool register_native(KlassHandle k, Symbol* name, Symbol* signature, address entry, TRAPS) {
3990 Method* method = Klass::cast(k())->lookup_method(name, signature);
3991 if (method == NULL) {
3992 ResourceMark rm;
3993 stringStream st;
3994 st.print("Method %s name or signature does not match",
3995 Method::name_and_sig_as_C_string(Klass::cast(k()), name, signature));
3996 THROW_MSG_(vmSymbols::java_lang_NoSuchMethodError(), st.as_string(), false);
3997 }
3998 if (!method->is_native()) {
3999 // trying to register to a non-native method, see if a JVM TI agent has added prefix(es)
4000 method = find_prefixed_native(k, name, signature, THREAD);
4001 if (method == NULL) {
4002 ResourceMark rm;
4003 stringStream st;
4004 st.print("Method %s is not declared as native",
4005 Method::name_and_sig_as_C_string(Klass::cast(k()), name, signature));
4006 THROW_MSG_(vmSymbols::java_lang_NoSuchMethodError(), st.as_string(), false);
4007 }
4008 }
4009
4010 if (entry != NULL) {
4011 method->set_native_function(entry,
4012 Method::native_bind_event_is_interesting);
4013 } else {
4014 method->clear_native_function();
4015 }
4016 if (PrintJNIResolving) {
4017 ResourceMark rm(THREAD);
4018 tty->print_cr("[Registering JNI native method %s.%s]",
4019 method->method_holder()->external_name(),
4020 method->name()->as_C_string());
4021 }
4022 return true;
4023 }
4024
4025 #ifndef USDT2
4026 DT_RETURN_MARK_DECL(RegisterNatives, jint);
4027 #else /* USDT2 */
4028 DT_RETURN_MARK_DECL(RegisterNatives, jint
4029 , HOTSPOT_JNI_REGISTERNATIVES_RETURN(_ret_ref));
4030 #endif /* USDT2 */
4031
4032 JNI_ENTRY(jint, jni_RegisterNatives(JNIEnv *env, jclass clazz,
4033 const JNINativeMethod *methods,
4034 jint nMethods))
4035 JNIWrapper("RegisterNatives");
4036 #ifndef USDT2
4037 DTRACE_PROBE4(hotspot_jni, RegisterNatives__entry, env, clazz, methods, nMethods);
4038 #else /* USDT2 */
4039 HOTSPOT_JNI_REGISTERNATIVES_ENTRY(
4040 env, clazz, (void *) methods, nMethods);
4041 #endif /* USDT2 */
4042 jint ret = 0;
4043 DT_RETURN_MARK(RegisterNatives, jint, (const jint&)ret);
4044
4045 KlassHandle h_k(thread, java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz)));
4046
4047 for (int index = 0; index < nMethods; index++) {
4048 const char* meth_name = methods[index].name;
4049 const char* meth_sig = methods[index].signature;
4050 int meth_name_len = (int)strlen(meth_name);
4051
4052 // The class should have been loaded (we have an instance of the class
4053 // passed in) so the method and signature should already be in the symbol
4054 // table. If they're not there, the method doesn't exist.
4055 TempNewSymbol name = SymbolTable::probe(meth_name, meth_name_len);
4056 TempNewSymbol signature = SymbolTable::probe(meth_sig, (int)strlen(meth_sig));
4057
4058 if (name == NULL || signature == NULL) {
4059 ResourceMark rm;
4060 stringStream st;
4061 st.print("Method %s.%s%s not found", Klass::cast(h_k())->external_name(), meth_name, meth_sig);
4062 // Must return negative value on failure
4063 THROW_MSG_(vmSymbols::java_lang_NoSuchMethodError(), st.as_string(), -1);
4064 }
4065
4066 bool res = register_native(h_k, name, signature,
4067 (address) methods[index].fnPtr, THREAD);
4068 if (!res) {
4069 ret = -1;
4070 break;
4071 }
4072 }
4073 return ret;
4074 JNI_END
4075
4076
4077 JNI_ENTRY(jint, jni_UnregisterNatives(JNIEnv *env, jclass clazz))
4078 JNIWrapper("UnregisterNatives");
4079 #ifndef USDT2
4080 DTRACE_PROBE2(hotspot_jni, UnregisterNatives__entry, env, clazz);
4081 #else /* USDT2 */
4082 HOTSPOT_JNI_UNREGISTERNATIVES_ENTRY(
4083 env, clazz);
4084 #endif /* USDT2 */
4085 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz));
4086 //%note jni_2
4087 if (Klass::cast(k)->oop_is_instance()) {
4088 for (int index = 0; index < InstanceKlass::cast(k)->methods()->length(); index++) {
4089 Method* m = InstanceKlass::cast(k)->methods()->at(index);
4090 if (m->is_native()) {
4091 m->clear_native_function();
4092 m->set_signature_handler(NULL);
4093 }
4094 }
4095 }
4096 #ifndef USDT2
4097 DTRACE_PROBE1(hotspot_jni, UnregisterNatives__return, 0);
4098 #else /* USDT2 */
4099 HOTSPOT_JNI_UNREGISTERNATIVES_RETURN(
4100 0);
4101 #endif /* USDT2 */
4102 return 0;
4103 JNI_END
4104
4105 //
4106 // Monitor functions
4107 //
4108
4109 #ifndef USDT2
4110 DT_RETURN_MARK_DECL(MonitorEnter, jint);
4111 #else /* USDT2 */
4112 DT_RETURN_MARK_DECL(MonitorEnter, jint
4113 , HOTSPOT_JNI_MONITORENTER_RETURN(_ret_ref));
4114 #endif /* USDT2 */
4115
4116 JNI_ENTRY(jint, jni_MonitorEnter(JNIEnv *env, jobject jobj))
4117 #ifndef USDT2
4118 DTRACE_PROBE2(hotspot_jni, MonitorEnter__entry, env, jobj);
4119 #else /* USDT2 */
4120 HOTSPOT_JNI_MONITORENTER_ENTRY(
4121 env, jobj);
4122 #endif /* USDT2 */
4123 jint ret = JNI_ERR;
4124 DT_RETURN_MARK(MonitorEnter, jint, (const jint&)ret);
4125
4126 // If the object is null, we can't do anything with it
4127 if (jobj == NULL) {
4128 THROW_(vmSymbols::java_lang_NullPointerException(), JNI_ERR);
4129 }
4130
4131 Handle obj(thread, JNIHandles::resolve_non_null(jobj));
4132 ObjectSynchronizer::jni_enter(obj, CHECK_(JNI_ERR));
4133 ret = JNI_OK;
4134 return ret;
4135 JNI_END
4136
4137 #ifndef USDT2
4138 DT_RETURN_MARK_DECL(MonitorExit, jint);
4139 #else /* USDT2 */
4140 DT_RETURN_MARK_DECL(MonitorExit, jint
4141 , HOTSPOT_JNI_MONITOREXIT_RETURN(_ret_ref));
4142 #endif /* USDT2 */
4143
4144 JNI_ENTRY(jint, jni_MonitorExit(JNIEnv *env, jobject jobj))
4145 #ifndef USDT2
4146 DTRACE_PROBE2(hotspot_jni, MonitorExit__entry, env, jobj);
4147 #else /* USDT2 */
4148 HOTSPOT_JNI_MONITOREXIT_ENTRY(
4149 env, jobj);
4150 #endif /* USDT2 */
4151 jint ret = JNI_ERR;
4152 DT_RETURN_MARK(MonitorExit, jint, (const jint&)ret);
4153
4154 // Don't do anything with a null object
4155 if (jobj == NULL) {
4156 THROW_(vmSymbols::java_lang_NullPointerException(), JNI_ERR);
4157 }
4158
4159 Handle obj(THREAD, JNIHandles::resolve_non_null(jobj));
4160 ObjectSynchronizer::jni_exit(obj(), CHECK_(JNI_ERR));
4161
4162 ret = JNI_OK;
4163 return ret;
4164 JNI_END
4165
4166 //
4167 // Extensions
4168 //
4169
4170 #ifndef USDT2
4171 DT_VOID_RETURN_MARK_DECL(GetStringRegion);
4172 #else /* USDT2 */
4173 DT_VOID_RETURN_MARK_DECL(GetStringRegion
4174 , HOTSPOT_JNI_GETSTRINGREGION_RETURN());
4175 #endif /* USDT2 */
4176
4177 JNI_ENTRY(void, jni_GetStringRegion(JNIEnv *env, jstring string, jsize start, jsize len, jchar *buf))
4178 JNIWrapper("GetStringRegion");
4179 #ifndef USDT2
4180 DTRACE_PROBE5(hotspot_jni, GetStringRegion__entry, env, string, start, len, buf);
4181 #else /* USDT2 */
4182 HOTSPOT_JNI_GETSTRINGREGION_ENTRY(
4183 env, string, start, len, buf);
4184 #endif /* USDT2 */
4185 DT_VOID_RETURN_MARK(GetStringRegion);
4186 oop s = JNIHandles::resolve_non_null(string);
4187 int s_len = java_lang_String::length(s);
4188 if (start < 0 || len < 0 || start + len > s_len) {
4189 THROW(vmSymbols::java_lang_StringIndexOutOfBoundsException());
4190 } else {
4191 if (len > 0) {
4192 int s_offset = java_lang_String::offset(s);
4193 typeArrayOop s_value = java_lang_String::value(s);
4194 memcpy(buf, s_value->char_at_addr(s_offset+start), sizeof(jchar)*len);
4195 }
4196 }
4197 JNI_END
4198
4199 #ifndef USDT2
4200 DT_VOID_RETURN_MARK_DECL(GetStringUTFRegion);
4201 #else /* USDT2 */
4202 DT_VOID_RETURN_MARK_DECL(GetStringUTFRegion
4203 , HOTSPOT_JNI_GETSTRINGUTFREGION_RETURN());
4204 #endif /* USDT2 */
4205
4206 JNI_ENTRY(void, jni_GetStringUTFRegion(JNIEnv *env, jstring string, jsize start, jsize len, char *buf))
4207 JNIWrapper("GetStringUTFRegion");
4208 #ifndef USDT2
4209 DTRACE_PROBE5(hotspot_jni, GetStringUTFRegion__entry, env, string, start, len, buf);
4210 #else /* USDT2 */
4211 HOTSPOT_JNI_GETSTRINGUTFREGION_ENTRY(
4212 env, string, start, len, buf);
4213 #endif /* USDT2 */
4214 DT_VOID_RETURN_MARK(GetStringUTFRegion);
4215 oop s = JNIHandles::resolve_non_null(string);
4216 int s_len = java_lang_String::length(s);
4217 if (start < 0 || len < 0 || start + len > s_len) {
4218 THROW(vmSymbols::java_lang_StringIndexOutOfBoundsException());
4219 } else {
4220 //%note jni_7
4221 if (len > 0) {
4222 ResourceMark rm(THREAD);
4223 char *utf_region = java_lang_String::as_utf8_string(s, start, len);
4224 int utf_len = (int)strlen(utf_region);
4225 memcpy(buf, utf_region, utf_len);
4226 buf[utf_len] = 0;
4227 } else {
4228 // JDK null-terminates the buffer even in len is zero
4229 if (buf != NULL) {
4230 buf[0] = 0;
4231 }
4232 }
4233 }
4234 JNI_END
4235
4236
4237 JNI_ENTRY(void*, jni_GetPrimitiveArrayCritical(JNIEnv *env, jarray array, jboolean *isCopy))
4238 JNIWrapper("GetPrimitiveArrayCritical");
4239 #ifndef USDT2
4240 DTRACE_PROBE3(hotspot_jni, GetPrimitiveArrayCritical__entry, env, array, isCopy);
4241 #else /* USDT2 */
4242 HOTSPOT_JNI_GETPRIMITIVEARRAYCRITICAL_ENTRY(
4243 env, array, (uintptr_t *) isCopy);
4244 #endif /* USDT2 */
4245 GC_locker::lock_critical(thread);
4246 if (isCopy != NULL) {
4247 *isCopy = JNI_FALSE;
4248 }
4249 oop a = JNIHandles::resolve_non_null(array);
4250 assert(a->is_array(), "just checking");
4251 BasicType type;
4252 if (a->is_objArray()) {
4253 type = T_OBJECT;
4254 } else {
4255 type = TypeArrayKlass::cast(a->klass())->element_type();
4256 }
4257 void* ret = arrayOop(a)->base(type);
4258 #ifndef USDT2
4259 DTRACE_PROBE1(hotspot_jni, GetPrimitiveArrayCritical__return, ret);
4260 #else /* USDT2 */
4261 HOTSPOT_JNI_GETPRIMITIVEARRAYCRITICAL_RETURN(
4262 ret);
4263 #endif /* USDT2 */
4264 return ret;
4265 JNI_END
4266
4267
4268 JNI_ENTRY(void, jni_ReleasePrimitiveArrayCritical(JNIEnv *env, jarray array, void *carray, jint mode))
4269 JNIWrapper("ReleasePrimitiveArrayCritical");
4270 #ifndef USDT2
4271 DTRACE_PROBE4(hotspot_jni, ReleasePrimitiveArrayCritical__entry, env, array, carray, mode);
4272 #else /* USDT2 */
4273 HOTSPOT_JNI_RELEASEPRIMITIVEARRAYCRITICAL_ENTRY(
4274 env, array, carray, mode);
4275 #endif /* USDT2 */
4276 // The array, carray and mode arguments are ignored
4277 GC_locker::unlock_critical(thread);
4278 #ifndef USDT2
4279 DTRACE_PROBE(hotspot_jni, ReleasePrimitiveArrayCritical__return);
4280 #else /* USDT2 */
4281 HOTSPOT_JNI_RELEASEPRIMITIVEARRAYCRITICAL_RETURN(
4282 );
4283 #endif /* USDT2 */
4284 JNI_END
4285
4286
4287 JNI_ENTRY(const jchar*, jni_GetStringCritical(JNIEnv *env, jstring string, jboolean *isCopy))
4288 JNIWrapper("GetStringCritical");
4289 #ifndef USDT2
4290 DTRACE_PROBE3(hotspot_jni, GetStringCritical__entry, env, string, isCopy);
4291 #else /* USDT2 */
4292 HOTSPOT_JNI_GETSTRINGCRITICAL_ENTRY(
4293 env, string, (uintptr_t *) isCopy);
4294 #endif /* USDT2 */
4295 GC_locker::lock_critical(thread);
4296 if (isCopy != NULL) {
4297 *isCopy = JNI_FALSE;
4298 }
4299 oop s = JNIHandles::resolve_non_null(string);
4300 int s_len = java_lang_String::length(s);
4301 typeArrayOop s_value = java_lang_String::value(s);
4302 int s_offset = java_lang_String::offset(s);
4303 const jchar* ret;
4304 if (s_len > 0) {
4305 ret = s_value->char_at_addr(s_offset);
4306 } else {
4307 ret = (jchar*) s_value->base(T_CHAR);
4308 }
4309 #ifndef USDT2
4310 DTRACE_PROBE1(hotspot_jni, GetStringCritical__return, ret);
4311 #else /* USDT2 */
4312 HOTSPOT_JNI_GETSTRINGCRITICAL_RETURN(
4313 (uint16_t *) ret);
4314 #endif /* USDT2 */
4315 return ret;
4316 JNI_END
4317
4318
4319 JNI_ENTRY(void, jni_ReleaseStringCritical(JNIEnv *env, jstring str, const jchar *chars))
4320 JNIWrapper("ReleaseStringCritical");
4321 #ifndef USDT2
4322 DTRACE_PROBE3(hotspot_jni, ReleaseStringCritical__entry, env, str, chars);
4323 #else /* USDT2 */
4324 HOTSPOT_JNI_RELEASESTRINGCRITICAL_ENTRY(
4325 env, str, (uint16_t *) chars);
4326 #endif /* USDT2 */
4327 // The str and chars arguments are ignored
4328 GC_locker::unlock_critical(thread);
4329 #ifndef USDT2
4330 DTRACE_PROBE(hotspot_jni, ReleaseStringCritical__return);
4331 #else /* USDT2 */
4332 HOTSPOT_JNI_RELEASESTRINGCRITICAL_RETURN(
4333 );
4334 #endif /* USDT2 */
4335 JNI_END
4336
4337
4338 JNI_ENTRY(jweak, jni_NewWeakGlobalRef(JNIEnv *env, jobject ref))
4339 JNIWrapper("jni_NewWeakGlobalRef");
4340 #ifndef USDT2
4341 DTRACE_PROBE2(hotspot_jni, NewWeakGlobalRef__entry, env, ref);
4342 #else /* USDT2 */
4343 HOTSPOT_JNI_NEWWEAKGLOBALREF_ENTRY(
4344 env, ref);
4345 #endif /* USDT2 */
4346 Handle ref_handle(thread, JNIHandles::resolve(ref));
4347 jweak ret = JNIHandles::make_weak_global(ref_handle);
4348 #ifndef USDT2
4349 DTRACE_PROBE1(hotspot_jni, NewWeakGlobalRef__return, ret);
4350 #else /* USDT2 */
4351 HOTSPOT_JNI_NEWWEAKGLOBALREF_RETURN(
4352 ret);
4353 #endif /* USDT2 */
4354 return ret;
4355 JNI_END
4356
4357 // Must be JNI_ENTRY (with HandleMark)
4358 JNI_ENTRY(void, jni_DeleteWeakGlobalRef(JNIEnv *env, jweak ref))
4359 JNIWrapper("jni_DeleteWeakGlobalRef");
4360 #ifndef USDT2
4361 DTRACE_PROBE2(hotspot_jni, DeleteWeakGlobalRef__entry, env, ref);
4362 #else /* USDT2 */
4363 HOTSPOT_JNI_DELETEWEAKGLOBALREF_ENTRY(
4364 env, ref);
4365 #endif /* USDT2 */
4366 JNIHandles::destroy_weak_global(ref);
4367 #ifndef USDT2
4368 DTRACE_PROBE(hotspot_jni, DeleteWeakGlobalRef__return);
4369 #else /* USDT2 */
4370 HOTSPOT_JNI_DELETEWEAKGLOBALREF_RETURN(
4371 );
4372 #endif /* USDT2 */
4373 JNI_END
4374
4375
4376 JNI_QUICK_ENTRY(jboolean, jni_ExceptionCheck(JNIEnv *env))
4377 JNIWrapper("jni_ExceptionCheck");
4378 #ifndef USDT2
4379 DTRACE_PROBE1(hotspot_jni, ExceptionCheck__entry, env);
4380 #else /* USDT2 */
4381 HOTSPOT_JNI_EXCEPTIONCHECK_ENTRY(
4382 env);
4383 #endif /* USDT2 */
4384 jni_check_async_exceptions(thread);
4385 jboolean ret = (thread->has_pending_exception()) ? JNI_TRUE : JNI_FALSE;
4386 #ifndef USDT2
4387 DTRACE_PROBE1(hotspot_jni, ExceptionCheck__return, ret);
4388 #else /* USDT2 */
4389 HOTSPOT_JNI_EXCEPTIONCHECK_RETURN(
4390 ret);
4391 #endif /* USDT2 */
4392 return ret;
4393 JNI_END
4394
4395
4396 // Initialization state for three routines below relating to
4397 // java.nio.DirectBuffers
4398 static jint directBufferSupportInitializeStarted = 0;
4399 static volatile jint directBufferSupportInitializeEnded = 0;
4400 static volatile jint directBufferSupportInitializeFailed = 0;
4401 static jclass bufferClass = NULL;
4402 static jclass directBufferClass = NULL;
4403 static jclass directByteBufferClass = NULL;
4404 static jmethodID directByteBufferConstructor = NULL;
4405 static jfieldID directBufferAddressField = NULL;
4406 static jfieldID bufferCapacityField = NULL;
4407
4408 static jclass lookupOne(JNIEnv* env, const char* name, TRAPS) {
4409 Handle loader; // null (bootstrap) loader
4410 Handle protection_domain; // null protection domain
4411
4412 TempNewSymbol sym = SymbolTable::new_symbol(name, CHECK_NULL);
4413 jclass result = find_class_from_class_loader(env, sym, true, loader, protection_domain, true, CHECK_NULL);
4414
4415 if (TraceClassResolution && result != NULL) {
4416 trace_class_resolution(java_lang_Class::as_Klass(JNIHandles::resolve_non_null(result)));
4417 }
4418 return result;
4419 }
4420
4421 // These lookups are done with the NULL (bootstrap) ClassLoader to
4422 // circumvent any security checks that would be done by jni_FindClass.
4423 JNI_ENTRY(bool, lookupDirectBufferClasses(JNIEnv* env))
4424 {
4425 if ((bufferClass = lookupOne(env, "java/nio/Buffer", thread)) == NULL) { return false; }
4426 if ((directBufferClass = lookupOne(env, "sun/nio/ch/DirectBuffer", thread)) == NULL) { return false; }
4427 if ((directByteBufferClass = lookupOne(env, "java/nio/DirectByteBuffer", thread)) == NULL) { return false; }
4428 return true;
4429 }
4430 JNI_END
4431
4432
4433 static bool initializeDirectBufferSupport(JNIEnv* env, JavaThread* thread) {
4434 if (directBufferSupportInitializeFailed) {
4435 return false;
4436 }
4437
4438 if (Atomic::cmpxchg(1, &directBufferSupportInitializeStarted, 0) == 0) {
4439 if (!lookupDirectBufferClasses(env)) {
4440 directBufferSupportInitializeFailed = 1;
4441 return false;
4442 }
4443
4444 // Make global references for these
4445 bufferClass = (jclass) env->NewGlobalRef(bufferClass);
4446 directBufferClass = (jclass) env->NewGlobalRef(directBufferClass);
4447 directByteBufferClass = (jclass) env->NewGlobalRef(directByteBufferClass);
4448
4449 // Get needed field and method IDs
4450 directByteBufferConstructor = env->GetMethodID(directByteBufferClass, "<init>", "(JI)V");
4451 directBufferAddressField = env->GetFieldID(bufferClass, "address", "J");
4452 bufferCapacityField = env->GetFieldID(bufferClass, "capacity", "I");
4453
4454 if ((directByteBufferConstructor == NULL) ||
4455 (directBufferAddressField == NULL) ||
4456 (bufferCapacityField == NULL)) {
4457 directBufferSupportInitializeFailed = 1;
4458 return false;
4459 }
4460
4461 directBufferSupportInitializeEnded = 1;
4462 } else {
4463 while (!directBufferSupportInitializeEnded && !directBufferSupportInitializeFailed) {
4464 // Set state as yield_all can call os:sleep. On Solaris, yield_all calls
4465 // os::sleep which requires the VM state transition. On other platforms, it
4466 // is not necessary. The following call to change the VM state is purposely
4467 // put inside the loop to avoid potential deadlock when multiple threads
4468 // try to call this method. See 6791815 for more details.
4469 ThreadInVMfromNative tivn(thread);
4470 os::yield_all();
4471 }
4472 }
4473
4474 return !directBufferSupportInitializeFailed;
4475 }
4476
4477 extern "C" jobject JNICALL jni_NewDirectByteBuffer(JNIEnv *env, void* address, jlong capacity)
4478 {
4479 // thread_from_jni_environment() will block if VM is gone.
4480 JavaThread* thread = JavaThread::thread_from_jni_environment(env);
4481
4482 JNIWrapper("jni_NewDirectByteBuffer");
4483 #ifndef USDT2
4484 DTRACE_PROBE3(hotspot_jni, NewDirectByteBuffer__entry, env, address, capacity);
4485 #else /* USDT2 */
4486 HOTSPOT_JNI_NEWDIRECTBYTEBUFFER_ENTRY(
4487 env, address, capacity);
4488 #endif /* USDT2 */
4489
4490 if (!directBufferSupportInitializeEnded) {
4491 if (!initializeDirectBufferSupport(env, thread)) {
4492 #ifndef USDT2
4493 DTRACE_PROBE1(hotspot_jni, NewDirectByteBuffer__return, NULL);
4494 #else /* USDT2 */
4495 HOTSPOT_JNI_NEWDIRECTBYTEBUFFER_RETURN(
4496 NULL);
4497 #endif /* USDT2 */
4498 return NULL;
4499 }
4500 }
4501
4502 // Being paranoid about accidental sign extension on address
4503 jlong addr = (jlong) ((uintptr_t) address);
4504 // NOTE that package-private DirectByteBuffer constructor currently
4505 // takes int capacity
4506 jint cap = (jint) capacity;
4507 jobject ret = env->NewObject(directByteBufferClass, directByteBufferConstructor, addr, cap);
4508 #ifndef USDT2
4509 DTRACE_PROBE1(hotspot_jni, NewDirectByteBuffer__return, ret);
4510 #else /* USDT2 */
4511 HOTSPOT_JNI_NEWDIRECTBYTEBUFFER_RETURN(
4512 ret);
4513 #endif /* USDT2 */
4514 return ret;
4515 }
4516
4517 #ifndef USDT2
4518 DT_RETURN_MARK_DECL(GetDirectBufferAddress, void*);
4519 #else /* USDT2 */
4520 DT_RETURN_MARK_DECL(GetDirectBufferAddress, void*
4521 , HOTSPOT_JNI_GETDIRECTBUFFERADDRESS_RETURN((void*) _ret_ref));
4522 #endif /* USDT2 */
4523
4524 extern "C" void* JNICALL jni_GetDirectBufferAddress(JNIEnv *env, jobject buf)
4525 {
4526 // thread_from_jni_environment() will block if VM is gone.
4527 JavaThread* thread = JavaThread::thread_from_jni_environment(env);
4528
4529 JNIWrapper("jni_GetDirectBufferAddress");
4530 #ifndef USDT2
4531 DTRACE_PROBE2(hotspot_jni, GetDirectBufferAddress__entry, env, buf);
4532 #else /* USDT2 */
4533 HOTSPOT_JNI_GETDIRECTBUFFERADDRESS_ENTRY(
4534 env, buf);
4535 #endif /* USDT2 */
4536 void* ret = NULL;
4537 DT_RETURN_MARK(GetDirectBufferAddress, void*, (const void*&)ret);
4538
4539 if (!directBufferSupportInitializeEnded) {
4540 if (!initializeDirectBufferSupport(env, thread)) {
4541 return 0;
4542 }
4543 }
4544
4545 if ((buf != NULL) && (!env->IsInstanceOf(buf, directBufferClass))) {
4546 return 0;
4547 }
4548
4549 ret = (void*)(intptr_t)env->GetLongField(buf, directBufferAddressField);
4550 return ret;
4551 }
4552
4553 #ifndef USDT2
4554 DT_RETURN_MARK_DECL(GetDirectBufferCapacity, jlong);
4555 #else /* USDT2 */
4556 DT_RETURN_MARK_DECL(GetDirectBufferCapacity, jlong
4557 , HOTSPOT_JNI_GETDIRECTBUFFERCAPACITY_RETURN(_ret_ref));
4558 #endif /* USDT2 */
4559
4560 extern "C" jlong JNICALL jni_GetDirectBufferCapacity(JNIEnv *env, jobject buf)
4561 {
4562 // thread_from_jni_environment() will block if VM is gone.
4563 JavaThread* thread = JavaThread::thread_from_jni_environment(env);
4564
4565 JNIWrapper("jni_GetDirectBufferCapacity");
4566 #ifndef USDT2
4567 DTRACE_PROBE2(hotspot_jni, GetDirectBufferCapacity__entry, env, buf);
4568 #else /* USDT2 */
4569 HOTSPOT_JNI_GETDIRECTBUFFERCAPACITY_ENTRY(
4570 env, buf);
4571 #endif /* USDT2 */
4572 jlong ret = -1;
4573 DT_RETURN_MARK(GetDirectBufferCapacity, jlong, (const jlong&)ret);
4574
4575 if (!directBufferSupportInitializeEnded) {
4576 if (!initializeDirectBufferSupport(env, thread)) {
4577 ret = 0;
4578 return ret;
4579 }
4580 }
4581
4582 if (buf == NULL) {
4583 return -1;
4584 }
4585
4586 if (!env->IsInstanceOf(buf, directBufferClass)) {
4587 return -1;
4588 }
4589
4590 // NOTE that capacity is currently an int in the implementation
4591 ret = env->GetIntField(buf, bufferCapacityField);
4592 return ret;
4593 }
4594
4595
4596 JNI_LEAF(jint, jni_GetVersion(JNIEnv *env))
4597 JNIWrapper("GetVersion");
4598 #ifndef USDT2
4599 DTRACE_PROBE1(hotspot_jni, GetVersion__entry, env);
4600 #else /* USDT2 */
4601 HOTSPOT_JNI_GETVERSION_ENTRY(
4602 env);
4603 #endif /* USDT2 */
4604 #ifndef USDT2
4605 DTRACE_PROBE1(hotspot_jni, GetVersion__return, CurrentVersion);
4606 #else /* USDT2 */
4607 HOTSPOT_JNI_GETVERSION_RETURN(
4608 CurrentVersion);
4609 #endif /* USDT2 */
4610 return CurrentVersion;
4611 JNI_END
4612
4613 extern struct JavaVM_ main_vm;
4614
4615 JNI_LEAF(jint, jni_GetJavaVM(JNIEnv *env, JavaVM **vm))
4616 JNIWrapper("jni_GetJavaVM");
4617 #ifndef USDT2
4618 DTRACE_PROBE2(hotspot_jni, GetJavaVM__entry, env, vm);
4619 #else /* USDT2 */
4620 HOTSPOT_JNI_GETJAVAVM_ENTRY(
4621 env, (void **) vm);
4622 #endif /* USDT2 */
4623 *vm = (JavaVM *)(&main_vm);
4624 #ifndef USDT2
4625 DTRACE_PROBE1(hotspot_jni, GetJavaVM__return, JNI_OK);
4626 #else /* USDT2 */
4627 HOTSPOT_JNI_GETJAVAVM_RETURN(
4628 JNI_OK);
4629 #endif /* USDT2 */
4630 return JNI_OK;
4631 JNI_END
4632
4633 // Structure containing all jni functions
4634 struct JNINativeInterface_ jni_NativeInterface = {
4635 NULL,
4636 NULL,
4637 NULL,
4638
4639 NULL,
4640
4641 jni_GetVersion,
4642
4643 jni_DefineClass,
4644 jni_FindClass,
4645
4646 jni_FromReflectedMethod,
4647 jni_FromReflectedField,
4648
4649 jni_ToReflectedMethod,
4650
4651 jni_GetSuperclass,
4652 jni_IsAssignableFrom,
4653
4654 jni_ToReflectedField,
4655
4656 jni_Throw,
4657 jni_ThrowNew,
4658 jni_ExceptionOccurred,
4659 jni_ExceptionDescribe,
4660 jni_ExceptionClear,
4661 jni_FatalError,
4662
4663 jni_PushLocalFrame,
4664 jni_PopLocalFrame,
4665
4666 jni_NewGlobalRef,
4667 jni_DeleteGlobalRef,
4668 jni_DeleteLocalRef,
4669 jni_IsSameObject,
4670
4671 jni_NewLocalRef,
4672 jni_EnsureLocalCapacity,
4673
4674 jni_AllocObject,
4675 jni_NewObject,
4676 jni_NewObjectV,
4677 jni_NewObjectA,
4678
4679 jni_GetObjectClass,
4680 jni_IsInstanceOf,
4681
4682 jni_GetMethodID,
4683
4684 jni_CallObjectMethod,
4685 jni_CallObjectMethodV,
4686 jni_CallObjectMethodA,
4687 jni_CallBooleanMethod,
4688 jni_CallBooleanMethodV,
4689 jni_CallBooleanMethodA,
4690 jni_CallByteMethod,
4691 jni_CallByteMethodV,
4692 jni_CallByteMethodA,
4693 jni_CallCharMethod,
4694 jni_CallCharMethodV,
4695 jni_CallCharMethodA,
4696 jni_CallShortMethod,
4697 jni_CallShortMethodV,
4698 jni_CallShortMethodA,
4699 jni_CallIntMethod,
4700 jni_CallIntMethodV,
4701 jni_CallIntMethodA,
4702 jni_CallLongMethod,
4703 jni_CallLongMethodV,
4704 jni_CallLongMethodA,
4705 jni_CallFloatMethod,
4706 jni_CallFloatMethodV,
4707 jni_CallFloatMethodA,
4708 jni_CallDoubleMethod,
4709 jni_CallDoubleMethodV,
4710 jni_CallDoubleMethodA,
4711 jni_CallVoidMethod,
4712 jni_CallVoidMethodV,
4713 jni_CallVoidMethodA,
4714
4715 jni_CallNonvirtualObjectMethod,
4716 jni_CallNonvirtualObjectMethodV,
4717 jni_CallNonvirtualObjectMethodA,
4718 jni_CallNonvirtualBooleanMethod,
4719 jni_CallNonvirtualBooleanMethodV,
4720 jni_CallNonvirtualBooleanMethodA,
4721 jni_CallNonvirtualByteMethod,
4722 jni_CallNonvirtualByteMethodV,
4723 jni_CallNonvirtualByteMethodA,
4724 jni_CallNonvirtualCharMethod,
4725 jni_CallNonvirtualCharMethodV,
4726 jni_CallNonvirtualCharMethodA,
4727 jni_CallNonvirtualShortMethod,
4728 jni_CallNonvirtualShortMethodV,
4729 jni_CallNonvirtualShortMethodA,
4730 jni_CallNonvirtualIntMethod,
4731 jni_CallNonvirtualIntMethodV,
4732 jni_CallNonvirtualIntMethodA,
4733 jni_CallNonvirtualLongMethod,
4734 jni_CallNonvirtualLongMethodV,
4735 jni_CallNonvirtualLongMethodA,
4736 jni_CallNonvirtualFloatMethod,
4737 jni_CallNonvirtualFloatMethodV,
4738 jni_CallNonvirtualFloatMethodA,
4739 jni_CallNonvirtualDoubleMethod,
4740 jni_CallNonvirtualDoubleMethodV,
4741 jni_CallNonvirtualDoubleMethodA,
4742 jni_CallNonvirtualVoidMethod,
4743 jni_CallNonvirtualVoidMethodV,
4744 jni_CallNonvirtualVoidMethodA,
4745
4746 jni_GetFieldID,
4747
4748 jni_GetObjectField,
4749 jni_GetBooleanField,
4750 jni_GetByteField,
4751 jni_GetCharField,
4752 jni_GetShortField,
4753 jni_GetIntField,
4754 jni_GetLongField,
4755 jni_GetFloatField,
4756 jni_GetDoubleField,
4757
4758 jni_SetObjectField,
4759 jni_SetBooleanField,
4760 jni_SetByteField,
4761 jni_SetCharField,
4762 jni_SetShortField,
4763 jni_SetIntField,
4764 jni_SetLongField,
4765 jni_SetFloatField,
4766 jni_SetDoubleField,
4767
4768 jni_GetStaticMethodID,
4769
4770 jni_CallStaticObjectMethod,
4771 jni_CallStaticObjectMethodV,
4772 jni_CallStaticObjectMethodA,
4773 jni_CallStaticBooleanMethod,
4774 jni_CallStaticBooleanMethodV,
4775 jni_CallStaticBooleanMethodA,
4776 jni_CallStaticByteMethod,
4777 jni_CallStaticByteMethodV,
4778 jni_CallStaticByteMethodA,
4779 jni_CallStaticCharMethod,
4780 jni_CallStaticCharMethodV,
4781 jni_CallStaticCharMethodA,
4782 jni_CallStaticShortMethod,
4783 jni_CallStaticShortMethodV,
4784 jni_CallStaticShortMethodA,
4785 jni_CallStaticIntMethod,
4786 jni_CallStaticIntMethodV,
4787 jni_CallStaticIntMethodA,
4788 jni_CallStaticLongMethod,
4789 jni_CallStaticLongMethodV,
4790 jni_CallStaticLongMethodA,
4791 jni_CallStaticFloatMethod,
4792 jni_CallStaticFloatMethodV,
4793 jni_CallStaticFloatMethodA,
4794 jni_CallStaticDoubleMethod,
4795 jni_CallStaticDoubleMethodV,
4796 jni_CallStaticDoubleMethodA,
4797 jni_CallStaticVoidMethod,
4798 jni_CallStaticVoidMethodV,
4799 jni_CallStaticVoidMethodA,
4800
4801 jni_GetStaticFieldID,
4802
4803 jni_GetStaticObjectField,
4804 jni_GetStaticBooleanField,
4805 jni_GetStaticByteField,
4806 jni_GetStaticCharField,
4807 jni_GetStaticShortField,
4808 jni_GetStaticIntField,
4809 jni_GetStaticLongField,
4810 jni_GetStaticFloatField,
4811 jni_GetStaticDoubleField,
4812
4813 jni_SetStaticObjectField,
4814 jni_SetStaticBooleanField,
4815 jni_SetStaticByteField,
4816 jni_SetStaticCharField,
4817 jni_SetStaticShortField,
4818 jni_SetStaticIntField,
4819 jni_SetStaticLongField,
4820 jni_SetStaticFloatField,
4821 jni_SetStaticDoubleField,
4822
4823 jni_NewString,
4824 jni_GetStringLength,
4825 jni_GetStringChars,
4826 jni_ReleaseStringChars,
4827
4828 jni_NewStringUTF,
4829 jni_GetStringUTFLength,
4830 jni_GetStringUTFChars,
4831 jni_ReleaseStringUTFChars,
4832
4833 jni_GetArrayLength,
4834
4835 jni_NewObjectArray,
4836 jni_GetObjectArrayElement,
4837 jni_SetObjectArrayElement,
4838
4839 jni_NewBooleanArray,
4840 jni_NewByteArray,
4841 jni_NewCharArray,
4842 jni_NewShortArray,
4843 jni_NewIntArray,
4844 jni_NewLongArray,
4845 jni_NewFloatArray,
4846 jni_NewDoubleArray,
4847
4848 jni_GetBooleanArrayElements,
4849 jni_GetByteArrayElements,
4850 jni_GetCharArrayElements,
4851 jni_GetShortArrayElements,
4852 jni_GetIntArrayElements,
4853 jni_GetLongArrayElements,
4854 jni_GetFloatArrayElements,
4855 jni_GetDoubleArrayElements,
4856
4857 jni_ReleaseBooleanArrayElements,
4858 jni_ReleaseByteArrayElements,
4859 jni_ReleaseCharArrayElements,
4860 jni_ReleaseShortArrayElements,
4861 jni_ReleaseIntArrayElements,
4862 jni_ReleaseLongArrayElements,
4863 jni_ReleaseFloatArrayElements,
4864 jni_ReleaseDoubleArrayElements,
4865
4866 jni_GetBooleanArrayRegion,
4867 jni_GetByteArrayRegion,
4868 jni_GetCharArrayRegion,
4869 jni_GetShortArrayRegion,
4870 jni_GetIntArrayRegion,
4871 jni_GetLongArrayRegion,
4872 jni_GetFloatArrayRegion,
4873 jni_GetDoubleArrayRegion,
4874
4875 jni_SetBooleanArrayRegion,
4876 jni_SetByteArrayRegion,
4877 jni_SetCharArrayRegion,
4878 jni_SetShortArrayRegion,
4879 jni_SetIntArrayRegion,
4880 jni_SetLongArrayRegion,
4881 jni_SetFloatArrayRegion,
4882 jni_SetDoubleArrayRegion,
4883
4884 jni_RegisterNatives,
4885 jni_UnregisterNatives,
4886
4887 jni_MonitorEnter,
4888 jni_MonitorExit,
4889
4890 jni_GetJavaVM,
4891
4892 jni_GetStringRegion,
4893 jni_GetStringUTFRegion,
4894
4895 jni_GetPrimitiveArrayCritical,
4896 jni_ReleasePrimitiveArrayCritical,
4897
4898 jni_GetStringCritical,
4899 jni_ReleaseStringCritical,
4900
4901 jni_NewWeakGlobalRef,
4902 jni_DeleteWeakGlobalRef,
4903
4904 jni_ExceptionCheck,
4905
4906 jni_NewDirectByteBuffer,
4907 jni_GetDirectBufferAddress,
4908 jni_GetDirectBufferCapacity,
4909
4910 // New 1_6 features
4911
4912 jni_GetObjectRefType
4913 };
4914
4915
4916 // For jvmti use to modify jni function table.
4917 // Java threads in native contiues to run until it is transitioned
4918 // to VM at safepoint. Before the transition or before it is blocked
4919 // for safepoint it may access jni function table. VM could crash if
4920 // any java thread access the jni function table in the middle of memcpy.
4921 // To avoid this each function pointers are copied automically.
4922 void copy_jni_function_table(const struct JNINativeInterface_ *new_jni_NativeInterface) {
4923 assert(SafepointSynchronize::is_at_safepoint(), "must be at safepoint");
4924 intptr_t *a = (intptr_t *) jni_functions();
4925 intptr_t *b = (intptr_t *) new_jni_NativeInterface;
4926 for (uint i=0; i < sizeof(struct JNINativeInterface_)/sizeof(void *); i++) {
4927 Atomic::store_ptr(*b++, a++);
4928 }
4929 }
4930
4931 void quicken_jni_functions() {
4932 // Replace Get<Primitive>Field with fast versions
4933 if (UseFastJNIAccessors && !JvmtiExport::can_post_field_access()
4934 && !VerifyJNIFields && !TraceJNICalls && !CountJNICalls && !CheckJNICalls
4935 #if defined(_WINDOWS) && defined(IA32) && defined(COMPILER2)
4936 // windows x86 currently needs SEH wrapper and the gain of the fast
4937 // versions currently isn't certain for server vm on uniprocessor.
4938 && os::is_MP()
4939 #endif
4940 ) {
4941 address func;
4942 func = JNI_FastGetField::generate_fast_get_boolean_field();
4943 if (func != (address)-1) {
4944 jni_NativeInterface.GetBooleanField = (GetBooleanField_t)func;
4945 }
4946 func = JNI_FastGetField::generate_fast_get_byte_field();
4947 if (func != (address)-1) {
4948 jni_NativeInterface.GetByteField = (GetByteField_t)func;
4949 }
4950 func = JNI_FastGetField::generate_fast_get_char_field();
4951 if (func != (address)-1) {
4952 jni_NativeInterface.GetCharField = (GetCharField_t)func;
4953 }
4954 func = JNI_FastGetField::generate_fast_get_short_field();
4955 if (func != (address)-1) {
4956 jni_NativeInterface.GetShortField = (GetShortField_t)func;
4957 }
4958 func = JNI_FastGetField::generate_fast_get_int_field();
4959 if (func != (address)-1) {
4960 jni_NativeInterface.GetIntField = (GetIntField_t)func;
4961 }
4962 func = JNI_FastGetField::generate_fast_get_long_field();
4963 if (func != (address)-1) {
4964 jni_NativeInterface.GetLongField = (GetLongField_t)func;
4965 }
4966 func = JNI_FastGetField::generate_fast_get_float_field();
4967 if (func != (address)-1) {
4968 jni_NativeInterface.GetFloatField = (GetFloatField_t)func;
4969 }
4970 func = JNI_FastGetField::generate_fast_get_double_field();
4971 if (func != (address)-1) {
4972 jni_NativeInterface.GetDoubleField = (GetDoubleField_t)func;
4973 }
4974 }
4975 }
4976
4977 // Returns the function structure
4978 struct JNINativeInterface_* jni_functions() {
4979 #if INCLUDE_JNI_CHECK
4980 if (CheckJNICalls) return jni_functions_check();
4981 #endif // INCLUDE_JNI_CHECK
4982 return &jni_NativeInterface;
4983 }
4984
4985 // Returns the function structure
4986 struct JNINativeInterface_* jni_functions_nocheck() {
4987 return &jni_NativeInterface;
4988 }
4989
4990
4991 // Invocation API
4992
4993
4994 // Forward declaration
4995 extern const struct JNIInvokeInterface_ jni_InvokeInterface;
4996
4997 // Global invocation API vars
4998 volatile jint vm_created = 0;
4999 // Indicate whether it is safe to recreate VM
5000 volatile jint safe_to_recreate_vm = 1;
5001 struct JavaVM_ main_vm = {&jni_InvokeInterface};
5002
5003
5004 #define JAVASTACKSIZE (400 * 1024) /* Default size of a thread java stack */
5005 enum { VERIFY_NONE, VERIFY_REMOTE, VERIFY_ALL };
5006
5007 #ifndef USDT2
5008 HS_DTRACE_PROBE_DECL1(hotspot_jni, GetDefaultJavaVMInitArgs__entry, void*);
5009 DT_RETURN_MARK_DECL(GetDefaultJavaVMInitArgs, jint);
5010 #else /* USDT2 */
5011 DT_RETURN_MARK_DECL(GetDefaultJavaVMInitArgs, jint
5012 , HOTSPOT_JNI_GETDEFAULTJAVAVMINITARGS_RETURN(_ret_ref));
5013 #endif /* USDT2 */
5014
5015 _JNI_IMPORT_OR_EXPORT_ jint JNICALL JNI_GetDefaultJavaVMInitArgs(void *args_) {
5016 #ifndef USDT2
5017 HS_DTRACE_PROBE1(hotspot_jni, GetDefaultJavaVMInitArgs__entry, args_);
5018 #else /* USDT2 */
5019 HOTSPOT_JNI_GETDEFAULTJAVAVMINITARGS_ENTRY(
5020 args_);
5021 #endif /* USDT2 */
5022 JDK1_1InitArgs *args = (JDK1_1InitArgs *)args_;
5023 jint ret = JNI_ERR;
5024 DT_RETURN_MARK(GetDefaultJavaVMInitArgs, jint, (const jint&)ret);
5025
5026 if (Threads::is_supported_jni_version(args->version)) {
5027 ret = JNI_OK;
5028 }
5029 // 1.1 style no longer supported in hotspot.
5030 // According the JNI spec, we should update args->version on return.
5031 // We also use the structure to communicate with launcher about default
5032 // stack size.
5033 if (args->version == JNI_VERSION_1_1) {
5034 args->version = JNI_VERSION_1_2;
5035 // javaStackSize is int in arguments structure
5036 assert(jlong(ThreadStackSize) * K < INT_MAX, "integer overflow");
5037 args->javaStackSize = (jint)(ThreadStackSize * K);
5038 }
5039 return ret;
5040 }
5041
5042 #ifndef PRODUCT
5043
5044 #include "gc_interface/collectedHeap.hpp"
5045 #include "utilities/quickSort.hpp"
5046
5047 #define run_unit_test(unit_test_function_call) \
5048 tty->print_cr("Running test: " #unit_test_function_call); \
5049 unit_test_function_call
5050
5051 void execute_internal_vm_tests() {
5052 if (ExecuteInternalVMTests) {
5053 tty->print_cr("Running internal VM tests");
5054 run_unit_test(arrayOopDesc::test_max_array_length());
5055 run_unit_test(CollectedHeap::test_is_in());
5056 run_unit_test(QuickSort::test_quick_sort());
5057 run_unit_test(AltHashing::test_alt_hash());
5058 tty->print_cr("All internal VM tests passed");
5059 }
5060 }
5061
5062 #undef run_unit_test
5063
5064 #endif
5065
5066 #ifndef USDT2
5067 HS_DTRACE_PROBE_DECL3(hotspot_jni, CreateJavaVM__entry, vm, penv, args);
5068 DT_RETURN_MARK_DECL(CreateJavaVM, jint);
5069 #else /* USDT2 */
5070 DT_RETURN_MARK_DECL(CreateJavaVM, jint
5071 , HOTSPOT_JNI_CREATEJAVAVM_RETURN(_ret_ref));
5072 #endif /* USDT2 */
5073
5074 _JNI_IMPORT_OR_EXPORT_ jint JNICALL JNI_CreateJavaVM(JavaVM **vm, void **penv, void *args) {
5075 #ifndef USDT2
5076 HS_DTRACE_PROBE3(hotspot_jni, CreateJavaVM__entry, vm, penv, args);
5077 #else /* USDT2 */
5078 HOTSPOT_JNI_CREATEJAVAVM_ENTRY(
5079 (void **) vm, penv, args);
5080 #endif /* USDT2 */
5081
5082 jint result = JNI_ERR;
5083 DT_RETURN_MARK(CreateJavaVM, jint, (const jint&)result);
5084
5085 // We're about to use Atomic::xchg for synchronization. Some Zero
5086 // platforms use the GCC builtin __sync_lock_test_and_set for this,
5087 // but __sync_lock_test_and_set is not guaranteed to do what we want
5088 // on all architectures. So we check it works before relying on it.
5089 #if defined(ZERO) && defined(ASSERT)
5090 {
5091 jint a = 0xcafebabe;
5092 jint b = Atomic::xchg(0xdeadbeef, &a);
5093 void *c = &a;
5094 void *d = Atomic::xchg_ptr(&b, &c);
5095 assert(a == (jint) 0xdeadbeef && b == (jint) 0xcafebabe, "Atomic::xchg() works");
5096 assert(c == &b && d == &a, "Atomic::xchg_ptr() works");
5097 }
5098 #endif // ZERO && ASSERT
5099
5100 // At the moment it's only possible to have one Java VM,
5101 // since some of the runtime state is in global variables.
5102
5103 // We cannot use our mutex locks here, since they only work on
5104 // Threads. We do an atomic compare and exchange to ensure only
5105 // one thread can call this method at a time
5106
5107 // We use Atomic::xchg rather than Atomic::add/dec since on some platforms
5108 // the add/dec implementations are dependent on whether we are running
5109 // on a multiprocessor, and at this stage of initialization the os::is_MP
5110 // function used to determine this will always return false. Atomic::xchg
5111 // does not have this problem.
5112 if (Atomic::xchg(1, &vm_created) == 1) {
5113 return JNI_ERR; // already created, or create attempt in progress
5114 }
5115 if (Atomic::xchg(0, &safe_to_recreate_vm) == 0) {
5116 return JNI_ERR; // someone tried and failed and retry not allowed.
5117 }
5118
5119 assert(vm_created == 1, "vm_created is true during the creation");
5120
5121 /**
5122 * Certain errors during initialization are recoverable and do not
5123 * prevent this method from being called again at a later time
5124 * (perhaps with different arguments). However, at a certain
5125 * point during initialization if an error occurs we cannot allow
5126 * this function to be called again (or it will crash). In those
5127 * situations, the 'canTryAgain' flag is set to false, which atomically
5128 * sets safe_to_recreate_vm to 1, such that any new call to
5129 * JNI_CreateJavaVM will immediately fail using the above logic.
5130 */
5131 bool can_try_again = true;
5132
5133 result = Threads::create_vm((JavaVMInitArgs*) args, &can_try_again);
5134 if (result == JNI_OK) {
5135 JavaThread *thread = JavaThread::current();
5136 /* thread is thread_in_vm here */
5137 *vm = (JavaVM *)(&main_vm);
5138 *(JNIEnv**)penv = thread->jni_environment();
5139
5140 // Tracks the time application was running before GC
5141 RuntimeService::record_application_start();
5142
5143 // Notify JVMTI
5144 if (JvmtiExport::should_post_thread_life()) {
5145 JvmtiExport::post_thread_start(thread);
5146 }
5147
5148 EVENT_BEGIN(TraceEventThreadStart, event);
5149 EVENT_COMMIT(event,
5150 EVENT_SET(event, javalangthread, java_lang_Thread::thread_id(thread->threadObj())));
5151
5152 // Check if we should compile all classes on bootclasspath
5153 NOT_PRODUCT(if (CompileTheWorld) ClassLoader::compile_the_world();)
5154 // Since this is not a JVM_ENTRY we have to set the thread state manually before leaving.
5155 ThreadStateTransition::transition_and_fence(thread, _thread_in_vm, _thread_in_native);
5156 } else {
5157 if (can_try_again) {
5158 // reset safe_to_recreate_vm to 1 so that retrial would be possible
5159 safe_to_recreate_vm = 1;
5160 }
5161
5162 // Creation failed. We must reset vm_created
5163 *vm = 0;
5164 *(JNIEnv**)penv = 0;
5165 // reset vm_created last to avoid race condition. Use OrderAccess to
5166 // control both compiler and architectural-based reordering.
5167 OrderAccess::release_store(&vm_created, 0);
5168 }
5169
5170 NOT_PRODUCT(test_error_handler(ErrorHandlerTest));
5171 NOT_PRODUCT(execute_internal_vm_tests());
5172 return result;
5173 }
5174
5175 #ifndef USDT2
5176 HS_DTRACE_PROBE_DECL3(hotspot_jni, GetCreatedJavaVMs__entry, \
5177 JavaVM**, jsize, jsize*);
5178 HS_DTRACE_PROBE_DECL1(hotspot_jni, GetCreatedJavaVMs__return, jint);
5179 #endif /* !USDT2 */
5180
5181 _JNI_IMPORT_OR_EXPORT_ jint JNICALL JNI_GetCreatedJavaVMs(JavaVM **vm_buf, jsize bufLen, jsize *numVMs) {
5182 // See bug 4367188, the wrapper can sometimes cause VM crashes
5183 // JNIWrapper("GetCreatedJavaVMs");
5184 #ifndef USDT2
5185 HS_DTRACE_PROBE3(hotspot_jni, GetCreatedJavaVMs__entry, \
5186 vm_buf, bufLen, numVMs);
5187 #else /* USDT2 */
5188 HOTSPOT_JNI_GETCREATEDJAVAVMS_ENTRY(
5189 (void **) vm_buf, bufLen, (uintptr_t *) numVMs);
5190 #endif /* USDT2 */
5191 if (vm_created) {
5192 if (numVMs != NULL) *numVMs = 1;
5193 if (bufLen > 0) *vm_buf = (JavaVM *)(&main_vm);
5194 } else {
5195 if (numVMs != NULL) *numVMs = 0;
5196 }
5197 #ifndef USDT2
5198 HS_DTRACE_PROBE1(hotspot_jni, GetCreatedJavaVMs__return, JNI_OK);
5199 #else /* USDT2 */
5200 HOTSPOT_JNI_GETCREATEDJAVAVMS_RETURN(
5201 JNI_OK);
5202 #endif /* USDT2 */
5203 return JNI_OK;
5204 }
5205
5206 extern "C" {
5207
5208 #ifndef USDT2
5209 DT_RETURN_MARK_DECL(DestroyJavaVM, jint);
5210 #else /* USDT2 */
5211 DT_RETURN_MARK_DECL(DestroyJavaVM, jint
5212 , HOTSPOT_JNI_DESTROYJAVAVM_RETURN(_ret_ref));
5213 #endif /* USDT2 */
5214
5215 jint JNICALL jni_DestroyJavaVM(JavaVM *vm) {
5216 #ifndef USDT2
5217 DTRACE_PROBE1(hotspot_jni, DestroyJavaVM__entry, vm);
5218 #else /* USDT2 */
5219 HOTSPOT_JNI_DESTROYJAVAVM_ENTRY(
5220 vm);
5221 #endif /* USDT2 */
5222 jint res = JNI_ERR;
5223 DT_RETURN_MARK(DestroyJavaVM, jint, (const jint&)res);
5224
5225 if (!vm_created) {
5226 res = JNI_ERR;
5227 return res;
5228 }
5229
5230 JNIWrapper("DestroyJavaVM");
5231 JNIEnv *env;
5232 JavaVMAttachArgs destroyargs;
5233 destroyargs.version = CurrentVersion;
5234 destroyargs.name = (char *)"DestroyJavaVM";
5235 destroyargs.group = NULL;
5236 res = vm->AttachCurrentThread((void **)&env, (void *)&destroyargs);
5237 if (res != JNI_OK) {
5238 return res;
5239 }
5240
5241 // Since this is not a JVM_ENTRY we have to set the thread state manually before entering.
5242 JavaThread* thread = JavaThread::current();
5243 ThreadStateTransition::transition_from_native(thread, _thread_in_vm);
5244 if (Threads::destroy_vm()) {
5245 // Should not change thread state, VM is gone
5246 vm_created = false;
5247 res = JNI_OK;
5248 return res;
5249 } else {
5250 ThreadStateTransition::transition_and_fence(thread, _thread_in_vm, _thread_in_native);
5251 res = JNI_ERR;
5252 return res;
5253 }
5254 }
5255
5256
5257 static jint attach_current_thread(JavaVM *vm, void **penv, void *_args, bool daemon) {
5258 JavaVMAttachArgs *args = (JavaVMAttachArgs *) _args;
5259
5260 // Check below commented out from JDK1.2fcs as well
5261 /*
5262 if (args && (args->version != JNI_VERSION_1_1 || args->version != JNI_VERSION_1_2)) {
5263 return JNI_EVERSION;
5264 }
5265 */
5266
5267 Thread* t = ThreadLocalStorage::get_thread_slow();
5268 if (t != NULL) {
5269 // If the thread has been attached this operation is a no-op
5270 *(JNIEnv**)penv = ((JavaThread*) t)->jni_environment();
5271 return JNI_OK;
5272 }
5273
5274 // Create a thread and mark it as attaching so it will be skipped by the
5275 // ThreadsListEnumerator - see CR 6404306
5276 JavaThread* thread = new JavaThread(true);
5277
5278 // Set correct safepoint info. The thread is going to call into Java when
5279 // initializing the Java level thread object. Hence, the correct state must
5280 // be set in order for the Safepoint code to deal with it correctly.
5281 thread->set_thread_state(_thread_in_vm);
5282 // Must do this before initialize_thread_local_storage
5283 thread->record_stack_base_and_size();
5284
5285 thread->initialize_thread_local_storage();
5286
5287 if (!os::create_attached_thread(thread)) {
5288 delete thread;
5289 return JNI_ERR;
5290 }
5291 // Enable stack overflow checks
5292 thread->create_stack_guard_pages();
5293
5294 thread->initialize_tlab();
5295
5296 thread->cache_global_variables();
5297
5298 // Crucial that we do not have a safepoint check for this thread, since it has
5299 // not been added to the Thread list yet.
5300 { Threads_lock->lock_without_safepoint_check();
5301 // This must be inside this lock in order to get FullGCALot to work properly, i.e., to
5302 // avoid this thread trying to do a GC before it is added to the thread-list
5303 thread->set_active_handles(JNIHandleBlock::allocate_block());
5304 Threads::add(thread, daemon);
5305 Threads_lock->unlock();
5306 }
5307 // Create thread group and name info from attach arguments
5308 oop group = NULL;
5309 char* thread_name = NULL;
5310 if (args != NULL && Threads::is_supported_jni_version(args->version)) {
5311 group = JNIHandles::resolve(args->group);
5312 thread_name = args->name; // may be NULL
5313 }
5314 if (group == NULL) group = Universe::main_thread_group();
5315
5316 // Create Java level thread object and attach it to this thread
5317 bool attach_failed = false;
5318 {
5319 EXCEPTION_MARK;
5320 HandleMark hm(THREAD);
5321 Handle thread_group(THREAD, group);
5322 thread->allocate_threadObj(thread_group, thread_name, daemon, THREAD);
5323 if (HAS_PENDING_EXCEPTION) {
5324 CLEAR_PENDING_EXCEPTION;
5325 // cleanup outside the handle mark.
5326 attach_failed = true;
5327 }
5328 }
5329
5330 if (attach_failed) {
5331 // Added missing cleanup
5332 thread->cleanup_failed_attach_current_thread();
5333 return JNI_ERR;
5334 }
5335
5336 // mark the thread as no longer attaching
5337 // this uses a fence to push the change through so we don't have
5338 // to regrab the threads_lock
5339 thread->set_done_attaching_via_jni();
5340
5341 // Set java thread status.
5342 java_lang_Thread::set_thread_status(thread->threadObj(),
5343 java_lang_Thread::RUNNABLE);
5344
5345 // Notify the debugger
5346 if (JvmtiExport::should_post_thread_life()) {
5347 JvmtiExport::post_thread_start(thread);
5348 }
5349
5350 EVENT_BEGIN(TraceEventThreadStart, event);
5351 EVENT_COMMIT(event,
5352 EVENT_SET(event, javalangthread, java_lang_Thread::thread_id(thread->threadObj())));
5353
5354 *(JNIEnv**)penv = thread->jni_environment();
5355
5356 // Now leaving the VM, so change thread_state. This is normally automatically taken care
5357 // of in the JVM_ENTRY. But in this situation we have to do it manually. Notice, that by
5358 // using ThreadStateTransition::transition, we do a callback to the safepoint code if
5359 // needed.
5360
5361 ThreadStateTransition::transition_and_fence(thread, _thread_in_vm, _thread_in_native);
5362
5363 // Perform any platform dependent FPU setup
5364 os::setup_fpu();
5365
5366 return JNI_OK;
5367 }
5368
5369
5370 jint JNICALL jni_AttachCurrentThread(JavaVM *vm, void **penv, void *_args) {
5371 #ifndef USDT2
5372 DTRACE_PROBE3(hotspot_jni, AttachCurrentThread__entry, vm, penv, _args);
5373 #else /* USDT2 */
5374 HOTSPOT_JNI_ATTACHCURRENTTHREAD_ENTRY(
5375 vm, penv, _args);
5376 #endif /* USDT2 */
5377 if (!vm_created) {
5378 #ifndef USDT2
5379 DTRACE_PROBE1(hotspot_jni, AttachCurrentThread__return, JNI_ERR);
5380 #else /* USDT2 */
5381 HOTSPOT_JNI_ATTACHCURRENTTHREAD_RETURN(
5382 (uint32_t) JNI_ERR);
5383 #endif /* USDT2 */
5384 return JNI_ERR;
5385 }
5386
5387 JNIWrapper("AttachCurrentThread");
5388 jint ret = attach_current_thread(vm, penv, _args, false);
5389 #ifndef USDT2
5390 DTRACE_PROBE1(hotspot_jni, AttachCurrentThread__return, ret);
5391 #else /* USDT2 */
5392 HOTSPOT_JNI_ATTACHCURRENTTHREAD_RETURN(
5393 ret);
5394 #endif /* USDT2 */
5395 return ret;
5396 }
5397
5398
5399 jint JNICALL jni_DetachCurrentThread(JavaVM *vm) {
5400 #ifndef USDT2
5401 DTRACE_PROBE1(hotspot_jni, DetachCurrentThread__entry, vm);
5402 #else /* USDT2 */
5403 HOTSPOT_JNI_DETACHCURRENTTHREAD_ENTRY(
5404 vm);
5405 #endif /* USDT2 */
5406 VM_Exit::block_if_vm_exited();
5407
5408 JNIWrapper("DetachCurrentThread");
5409
5410 // If the thread has been deattacted the operations is a no-op
5411 if (ThreadLocalStorage::thread() == NULL) {
5412 #ifndef USDT2
5413 DTRACE_PROBE1(hotspot_jni, DetachCurrentThread__return, JNI_OK);
5414 #else /* USDT2 */
5415 HOTSPOT_JNI_DETACHCURRENTTHREAD_RETURN(
5416 JNI_OK);
5417 #endif /* USDT2 */
5418 return JNI_OK;
5419 }
5420
5421 JavaThread* thread = JavaThread::current();
5422 if (thread->has_last_Java_frame()) {
5423 #ifndef USDT2
5424 DTRACE_PROBE1(hotspot_jni, DetachCurrentThread__return, JNI_ERR);
5425 #else /* USDT2 */
5426 HOTSPOT_JNI_DETACHCURRENTTHREAD_RETURN(
5427 (uint32_t) JNI_ERR);
5428 #endif /* USDT2 */
5429 // Can't detach a thread that's running java, that can't work.
5430 return JNI_ERR;
5431 }
5432
5433 // Safepoint support. Have to do call-back to safepoint code, if in the
5434 // middel of a safepoint operation
5435 ThreadStateTransition::transition_from_native(thread, _thread_in_vm);
5436
5437 // XXX: Note that JavaThread::exit() call below removes the guards on the
5438 // stack pages set up via enable_stack_{red,yellow}_zone() calls
5439 // above in jni_AttachCurrentThread. Unfortunately, while the setting
5440 // of the guards is visible in jni_AttachCurrentThread above,
5441 // the removal of the guards is buried below in JavaThread::exit()
5442 // here. The abstraction should be more symmetrically either exposed
5443 // or hidden (e.g. it could probably be hidden in the same
5444 // (platform-dependent) methods where we do alternate stack
5445 // maintenance work?)
5446 thread->exit(false, JavaThread::jni_detach);
5447 delete thread;
5448
5449 #ifndef USDT2
5450 DTRACE_PROBE1(hotspot_jni, DetachCurrentThread__return, JNI_OK);
5451 #else /* USDT2 */
5452 HOTSPOT_JNI_DETACHCURRENTTHREAD_RETURN(
5453 JNI_OK);
5454 #endif /* USDT2 */
5455 return JNI_OK;
5456 }
5457
5458 #ifndef USDT2
5459 DT_RETURN_MARK_DECL(GetEnv, jint);
5460 #else /* USDT2 */
5461 DT_RETURN_MARK_DECL(GetEnv, jint
5462 , HOTSPOT_JNI_GETENV_RETURN(_ret_ref));
5463 #endif /* USDT2 */
5464
5465 jint JNICALL jni_GetEnv(JavaVM *vm, void **penv, jint version) {
5466 #ifndef USDT2
5467 DTRACE_PROBE3(hotspot_jni, GetEnv__entry, vm, penv, version);
5468 #else /* USDT2 */
5469 HOTSPOT_JNI_GETENV_ENTRY(
5470 vm, penv, version);
5471 #endif /* USDT2 */
5472 jint ret = JNI_ERR;
5473 DT_RETURN_MARK(GetEnv, jint, (const jint&)ret);
5474
5475 if (!vm_created) {
5476 *penv = NULL;
5477 ret = JNI_EDETACHED;
5478 return ret;
5479 }
5480
5481 if (JniExportedInterface::GetExportedInterface(vm, penv, version, &ret)) {
5482 return ret;
5483 }
5484
5485 #ifndef JVMPI_VERSION_1
5486 // need these in order to be polite about older agents
5487 #define JVMPI_VERSION_1 ((jint)0x10000001)
5488 #define JVMPI_VERSION_1_1 ((jint)0x10000002)
5489 #define JVMPI_VERSION_1_2 ((jint)0x10000003)
5490 #endif // !JVMPI_VERSION_1
5491
5492 Thread* thread = ThreadLocalStorage::thread();
5493 if (thread != NULL && thread->is_Java_thread()) {
5494 if (Threads::is_supported_jni_version_including_1_1(version)) {
5495 *(JNIEnv**)penv = ((JavaThread*) thread)->jni_environment();
5496 ret = JNI_OK;
5497 return ret;
5498
5499 } else if (version == JVMPI_VERSION_1 ||
5500 version == JVMPI_VERSION_1_1 ||
5501 version == JVMPI_VERSION_1_2) {
5502 tty->print_cr("ERROR: JVMPI, an experimental interface, is no longer supported.");
5503 tty->print_cr("Please use the supported interface: the JVM Tool Interface (JVM TI).");
5504 ret = JNI_EVERSION;
5505 return ret;
5506 } else if (JvmtiExport::is_jvmdi_version(version)) {
5507 tty->print_cr("FATAL ERROR: JVMDI is no longer supported.");
5508 tty->print_cr("Please use the supported interface: the JVM Tool Interface (JVM TI).");
5509 ret = JNI_EVERSION;
5510 return ret;
5511 } else {
5512 *penv = NULL;
5513 ret = JNI_EVERSION;
5514 return ret;
5515 }
5516 } else {
5517 *penv = NULL;
5518 ret = JNI_EDETACHED;
5519 return ret;
5520 }
5521 }
5522
5523
5524 jint JNICALL jni_AttachCurrentThreadAsDaemon(JavaVM *vm, void **penv, void *_args) {
5525 #ifndef USDT2
5526 DTRACE_PROBE3(hotspot_jni, AttachCurrentThreadAsDaemon__entry, vm, penv, _args);
5527 #else /* USDT2 */
5528 HOTSPOT_JNI_ATTACHCURRENTTHREADASDAEMON_ENTRY(
5529 vm, penv, _args);
5530 #endif /* USDT2 */
5531 if (!vm_created) {
5532 #ifndef USDT2
5533 DTRACE_PROBE1(hotspot_jni, AttachCurrentThreadAsDaemon__return, JNI_ERR);
5534 #else /* USDT2 */
5535 HOTSPOT_JNI_ATTACHCURRENTTHREADASDAEMON_RETURN(
5536 (uint32_t) JNI_ERR);
5537 #endif /* USDT2 */
5538 return JNI_ERR;
5539 }
5540
5541 JNIWrapper("AttachCurrentThreadAsDaemon");
5542 jint ret = attach_current_thread(vm, penv, _args, true);
5543 #ifndef USDT2
5544 DTRACE_PROBE1(hotspot_jni, AttachCurrentThreadAsDaemon__return, ret);
5545 #else /* USDT2 */
5546 HOTSPOT_JNI_ATTACHCURRENTTHREADASDAEMON_RETURN(
5547 ret);
5548 #endif /* USDT2 */
5549 return ret;
5550 }
5551
5552
5553 } // End extern "C"
5554
5555 const struct JNIInvokeInterface_ jni_InvokeInterface = {
5556 NULL,
5557 NULL,
5558 NULL,
5559
5560 jni_DestroyJavaVM,
5561 jni_AttachCurrentThread,
5562 jni_DetachCurrentThread,
5563 jni_GetEnv,
5564 jni_AttachCurrentThreadAsDaemon
5565 };