1 /*
2 * Copyright (c) 1997, 2013, 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 "ci/ciReplay.hpp"
28 #include "classfile/altHashing.hpp"
29 #include "classfile/classLoader.hpp"
30 #include "classfile/javaClasses.hpp"
31 #include "classfile/symbolTable.hpp"
32 #include "classfile/systemDictionary.hpp"
33 #include "classfile/vmSymbols.hpp"
34 #include "interpreter/linkResolver.hpp"
35 #include "utilities/macros.hpp"
36 #if INCLUDE_ALL_GCS
37 #include "gc_implementation/g1/g1SATBCardTableModRefBS.hpp"
38 #endif // INCLUDE_ALL_GCS
39 #include "memory/allocation.hpp"
40 #include "memory/allocation.inline.hpp"
41 #include "memory/gcLocker.inline.hpp"
42 #include "memory/oopFactory.hpp"
43 #include "memory/universe.inline.hpp"
44 #include "oops/instanceKlass.hpp"
45 #include "oops/instanceOop.hpp"
46 #include "oops/markOop.hpp"
47 #include "oops/method.hpp"
48 #include "oops/objArrayKlass.hpp"
49 #include "oops/objArrayOop.hpp"
50 #include "oops/oop.inline.hpp"
51 #include "oops/symbol.hpp"
52 #include "oops/typeArrayKlass.hpp"
53 #include "oops/typeArrayOop.hpp"
54 #include "prims/jni.h"
55 #include "prims/jniCheck.hpp"
56 #include "prims/jniExport.hpp"
57 #include "prims/jniFastGetField.hpp"
58 #include "prims/jvm.h"
59 #include "prims/jvm_misc.hpp"
60 #include "prims/jvmtiExport.hpp"
61 #include "prims/jvmtiThreadState.hpp"
62 #include "runtime/compilationPolicy.hpp"
63 #include "runtime/fieldDescriptor.hpp"
64 #include "runtime/fprofiler.hpp"
65 #include "runtime/handles.inline.hpp"
66 #include "runtime/interfaceSupport.hpp"
67 #include "runtime/java.hpp"
68 #include "runtime/javaCalls.hpp"
69 #include "runtime/jfieldIDWorkaround.hpp"
70 #include "runtime/reflection.hpp"
71 #include "runtime/sharedRuntime.hpp"
72 #include "runtime/signature.hpp"
73 #include "runtime/thread.inline.hpp"
74 #include "runtime/vm_operations.hpp"
75 #include "services/runtimeService.hpp"
76 #include "trace/tracing.hpp"
77 #include "utilities/defaultStream.hpp"
78 #include "utilities/dtrace.hpp"
79 #include "utilities/events.hpp"
80 #include "utilities/histogram.hpp"
81 #ifdef TARGET_OS_FAMILY_linux
82 # include "os_linux.inline.hpp"
83 #endif
84 #ifdef TARGET_OS_FAMILY_solaris
85 # include "os_solaris.inline.hpp"
86 #endif
87 #ifdef TARGET_OS_FAMILY_windows
88 # include "os_windows.inline.hpp"
89 #endif
90 #ifdef TARGET_OS_FAMILY_bsd
91 # include "os_bsd.inline.hpp"
92 #endif
93
94 static jint CurrentVersion = JNI_VERSION_1_8;
95
96
97 // The DT_RETURN_MARK macros create a scoped object to fire the dtrace
98 // '-return' probe regardless of the return path is taken out of the function.
99 // Methods that have multiple return paths use this to avoid having to
100 // instrument each return path. Methods that use CHECK or THROW must use this
101 // since those macros can cause an immedate uninstrumented return.
102 //
103 // In order to get the return value, a reference to the variable containing
104 // the return value must be passed to the contructor of the object, and
105 // the return value must be set before return (since the mark object has
106 // a reference to it).
107 //
108 // Example:
109 // DT_RETURN_MARK_DECL(SomeFunc, int);
110 // JNI_ENTRY(int, SomeFunc, ...)
111 // int return_value = 0;
112 // DT_RETURN_MARK(SomeFunc, int, (const int&)return_value);
113 // foo(CHECK_0)
114 // return_value = 5;
115 // return return_value;
116 // JNI_END
117 #ifndef USDT2
118 #define DT_RETURN_MARK_DECL(name, type) \
119 HS_DTRACE_PROBE_DECL1(hotspot_jni, name##__return, type); \
120 DTRACE_ONLY( \
121 class DTraceReturnProbeMark_##name { \
122 public: \
123 const type& _ret_ref; \
124 DTraceReturnProbeMark_##name(const type& v) : _ret_ref(v) {} \
125 ~DTraceReturnProbeMark_##name() { \
126 HS_DTRACE_PROBE1(hotspot_jni, name##__return, _ret_ref); \
127 } \
128 } \
129 )
130 // Void functions are simpler since there's no return value
131 #define DT_VOID_RETURN_MARK_DECL(name) \
132 HS_DTRACE_PROBE_DECL0(hotspot_jni, name##__return); \
133 DTRACE_ONLY( \
134 class DTraceReturnProbeMark_##name { \
135 public: \
136 ~DTraceReturnProbeMark_##name() { \
137 HS_DTRACE_PROBE0(hotspot_jni, name##__return); \
138 } \
139 } \
140 )
141
142 #else /* USDT2 */
143
144 #define DT_RETURN_MARK_DECL(name, type, probe) \
145 DTRACE_ONLY( \
146 class DTraceReturnProbeMark_##name { \
147 public: \
148 const type& _ret_ref; \
149 DTraceReturnProbeMark_##name(const type& v) : _ret_ref(v) {} \
150 ~DTraceReturnProbeMark_##name() { \
151 probe; \
152 } \
153 } \
154 )
155 // Void functions are simpler since there's no return value
156 #define DT_VOID_RETURN_MARK_DECL(name, probe) \
157 DTRACE_ONLY( \
158 class DTraceReturnProbeMark_##name { \
159 public: \
160 ~DTraceReturnProbeMark_##name() { \
161 probe; \
162 } \
163 } \
164 )
165 #endif /* USDT2 */
166
167 // Place these macros in the function to mark the return. Non-void
168 // functions need the type and address of the return value.
169 #define DT_RETURN_MARK(name, type, ref) \
170 DTRACE_ONLY( DTraceReturnProbeMark_##name dtrace_return_mark(ref) )
171 #define DT_VOID_RETURN_MARK(name) \
172 DTRACE_ONLY( DTraceReturnProbeMark_##name dtrace_return_mark )
173
174
175 // Use these to select distinct code for floating-point vs. non-floating point
176 // situations. Used from within common macros where we need slightly
177 // different behavior for Float/Double
178 #define FP_SELECT_Boolean(intcode, fpcode) intcode
179 #define FP_SELECT_Byte(intcode, fpcode) intcode
180 #define FP_SELECT_Char(intcode, fpcode) intcode
181 #define FP_SELECT_Short(intcode, fpcode) intcode
182 #define FP_SELECT_Object(intcode, fpcode) intcode
183 #define FP_SELECT_Int(intcode, fpcode) intcode
184 #define FP_SELECT_Long(intcode, fpcode) intcode
185 #define FP_SELECT_Float(intcode, fpcode) fpcode
186 #define FP_SELECT_Double(intcode, fpcode) fpcode
187 #define FP_SELECT(TypeName, intcode, fpcode) \
188 FP_SELECT_##TypeName(intcode, fpcode)
189
190 #define COMMA ,
191
192 // Choose DT_RETURN_MARK macros based on the type: float/double -> void
193 // (dtrace doesn't do FP yet)
194 #ifndef USDT2
195 #define DT_RETURN_MARK_DECL_FOR(TypeName, name, type) \
196 FP_SELECT(TypeName, \
197 DT_RETURN_MARK_DECL(name, type), DT_VOID_RETURN_MARK_DECL(name) )
198 #else /* USDT2 */
199 #define DT_RETURN_MARK_DECL_FOR(TypeName, name, type, probe) \
200 FP_SELECT(TypeName, \
201 DT_RETURN_MARK_DECL(name, type, probe), DT_VOID_RETURN_MARK_DECL(name, probe) )
202 #endif /* USDT2 */
203 #define DT_RETURN_MARK_FOR(TypeName, name, type, ref) \
204 FP_SELECT(TypeName, \
205 DT_RETURN_MARK(name, type, ref), DT_VOID_RETURN_MARK(name) )
206
207
208 // out-of-line helpers for class jfieldIDWorkaround:
209
210 bool jfieldIDWorkaround::is_valid_jfieldID(Klass* k, jfieldID id) {
211 if (jfieldIDWorkaround::is_instance_jfieldID(k, id)) {
212 uintptr_t as_uint = (uintptr_t) id;
213 intptr_t offset = raw_instance_offset(id);
214 if (is_checked_jfieldID(id)) {
215 if (!klass_hash_ok(k, id)) {
216 return false;
217 }
218 }
219 return InstanceKlass::cast(k)->contains_field_offset(offset);
220 } else {
221 JNIid* result = (JNIid*) id;
222 #ifdef ASSERT
223 return result != NULL && result->is_static_field_id();
224 #else
225 return result != NULL;
226 #endif
227 }
228 }
229
230
231 intptr_t jfieldIDWorkaround::encode_klass_hash(Klass* k, intptr_t offset) {
232 if (offset <= small_offset_mask) {
233 Klass* field_klass = k;
234 Klass* super_klass = field_klass->super();
235 // With compressed oops the most super class with nonstatic fields would
236 // be the owner of fields embedded in the header.
237 while (InstanceKlass::cast(super_klass)->has_nonstatic_fields() &&
238 InstanceKlass::cast(super_klass)->contains_field_offset(offset)) {
239 field_klass = super_klass; // super contains the field also
240 super_klass = field_klass->super();
241 }
242 debug_only(No_Safepoint_Verifier nosafepoint;)
243 uintptr_t klass_hash = field_klass->identity_hash();
244 return ((klass_hash & klass_mask) << klass_shift) | checked_mask_in_place;
245 } else {
246 #if 0
247 #ifndef PRODUCT
248 {
249 ResourceMark rm;
250 warning("VerifyJNIFields: long offset %d in %s", offset, k->external_name());
251 }
252 #endif
253 #endif
254 return 0;
255 }
256 }
257
258 bool jfieldIDWorkaround::klass_hash_ok(Klass* k, jfieldID id) {
259 uintptr_t as_uint = (uintptr_t) id;
260 intptr_t klass_hash = (as_uint >> klass_shift) & klass_mask;
261 do {
262 debug_only(No_Safepoint_Verifier nosafepoint;)
263 // Could use a non-blocking query for identity_hash here...
264 if ((k->identity_hash() & klass_mask) == klass_hash)
265 return true;
266 k = k->super();
267 } while (k != NULL);
268 return false;
269 }
270
271 void jfieldIDWorkaround::verify_instance_jfieldID(Klass* k, jfieldID id) {
272 guarantee(jfieldIDWorkaround::is_instance_jfieldID(k, id), "must be an instance field" );
273 uintptr_t as_uint = (uintptr_t) id;
274 intptr_t offset = raw_instance_offset(id);
275 if (VerifyJNIFields) {
276 if (is_checked_jfieldID(id)) {
277 guarantee(klass_hash_ok(k, id),
278 "Bug in native code: jfieldID class must match object");
279 } else {
280 #if 0
281 #ifndef PRODUCT
282 if (Verbose) {
283 ResourceMark rm;
284 warning("VerifyJNIFields: unverified offset %d for %s", offset, k->external_name());
285 }
286 #endif
287 #endif
288 }
289 }
290 guarantee(InstanceKlass::cast(k)->contains_field_offset(offset),
291 "Bug in native code: jfieldID offset must address interior of object");
292 }
293
294 // Pick a reasonable higher bound for local capacity requested
295 // for EnsureLocalCapacity and PushLocalFrame. We don't want it too
296 // high because a test (or very unusual application) may try to allocate
297 // that many handles and run out of swap space. An implementation is
298 // permitted to allocate more handles than the ensured capacity, so this
299 // value is set high enough to prevent compatibility problems.
300 const int MAX_REASONABLE_LOCAL_CAPACITY = 4*K;
301
302
303 // Wrapper to trace JNI functions
304
305 #ifdef ASSERT
306 Histogram* JNIHistogram;
307 static volatile jint JNIHistogram_lock = 0;
308
309 class JNITraceWrapper : public StackObj {
310 public:
311 JNITraceWrapper(const char* format, ...) {
312 if (TraceJNICalls) {
313 va_list ap;
314 va_start(ap, format);
315 tty->print("JNI ");
316 tty->vprint_cr(format, ap);
317 va_end(ap);
318 }
319 }
320 };
321
322 class JNIHistogramElement : public HistogramElement {
323 public:
324 JNIHistogramElement(const char* name);
325 };
326
327 JNIHistogramElement::JNIHistogramElement(const char* elementName) {
328 _name = elementName;
329 uintx count = 0;
330
331 while (Atomic::cmpxchg(1, &JNIHistogram_lock, 0) != 0) {
332 while (OrderAccess::load_acquire(&JNIHistogram_lock) != 0) {
333 count +=1;
334 if ( (WarnOnStalledSpinLock > 0)
335 && (count % WarnOnStalledSpinLock == 0)) {
336 warning("JNIHistogram_lock seems to be stalled");
337 }
338 }
339 }
340
341
342 if(JNIHistogram == NULL)
343 JNIHistogram = new Histogram("JNI Call Counts",100);
344
345 JNIHistogram->add_element(this);
346 Atomic::dec(&JNIHistogram_lock);
347 }
348
349 #define JNICountWrapper(arg) \
350 static JNIHistogramElement* e = new JNIHistogramElement(arg); \
351 /* There is a MT-race condition in VC++. So we need to make sure that that e has been initialized */ \
352 if (e != NULL) e->increment_count()
353 #define JNIWrapper(arg) JNICountWrapper(arg); JNITraceWrapper(arg)
354 #else
355 #define JNIWrapper(arg)
356 #endif
357
358
359 // Implementation of JNI entries
360
361 #ifndef USDT2
362 DT_RETURN_MARK_DECL(DefineClass, jclass);
363 #else /* USDT2 */
364 DT_RETURN_MARK_DECL(DefineClass, jclass
365 , HOTSPOT_JNI_DEFINECLASS_RETURN(_ret_ref));
366 #endif /* USDT2 */
367
368 JNI_ENTRY(jclass, jni_DefineClass(JNIEnv *env, const char *name, jobject loaderRef,
369 const jbyte *buf, jsize bufLen))
370 JNIWrapper("DefineClass");
371
372 #ifndef USDT2
373 DTRACE_PROBE5(hotspot_jni, DefineClass__entry,
374 env, name, loaderRef, buf, bufLen);
375 #else /* USDT2 */
376 HOTSPOT_JNI_DEFINECLASS_ENTRY(
377 env, (char*) name, loaderRef, (char*) buf, bufLen);
378 #endif /* USDT2 */
379 jclass cls = NULL;
380 DT_RETURN_MARK(DefineClass, jclass, (const jclass&)cls);
381
382 TempNewSymbol class_name = NULL;
383 // Since exceptions can be thrown, class initialization can take place
384 // if name is NULL no check for class name in .class stream has to be made.
385 if (name != NULL) {
386 const int str_len = (int)strlen(name);
387 if (str_len > Symbol::max_length()) {
388 // It's impossible to create this class; the name cannot fit
389 // into the constant pool.
390 THROW_MSG_0(vmSymbols::java_lang_NoClassDefFoundError(), name);
391 }
392 class_name = SymbolTable::new_symbol(name, CHECK_NULL);
393 }
394 ResourceMark rm(THREAD);
395 ClassFileStream st((u1*) buf, bufLen, NULL);
396 Handle class_loader (THREAD, JNIHandles::resolve(loaderRef));
397
398 if (UsePerfData && !class_loader.is_null()) {
399 // check whether the current caller thread holds the lock or not.
400 // If not, increment the corresponding counter
401 if (ObjectSynchronizer::
402 query_lock_ownership((JavaThread*)THREAD, class_loader) !=
403 ObjectSynchronizer::owner_self) {
404 ClassLoader::sync_JNIDefineClassLockFreeCounter()->inc();
405 }
406 }
407 Klass* k = SystemDictionary::resolve_from_stream(class_name, class_loader,
408 Handle(), &st, true,
409 CHECK_NULL);
410
411 if (TraceClassResolution && k != NULL) {
412 trace_class_resolution(k);
413 }
414
415 cls = (jclass)JNIHandles::make_local(
416 env, k->java_mirror());
417 return cls;
418 JNI_END
419
420
421
422 static bool first_time_FindClass = true;
423
424 #ifndef USDT2
425 DT_RETURN_MARK_DECL(FindClass, jclass);
426 #else /* USDT2 */
427 DT_RETURN_MARK_DECL(FindClass, jclass
428 , HOTSPOT_JNI_FINDCLASS_RETURN(_ret_ref));
429 #endif /* USDT2 */
430
431 JNI_ENTRY(jclass, jni_FindClass(JNIEnv *env, const char *name))
432 JNIWrapper("FindClass");
433 #ifndef USDT2
434 DTRACE_PROBE2(hotspot_jni, FindClass__entry, env, name);
435 #else /* USDT2 */
436 HOTSPOT_JNI_FINDCLASS_ENTRY(
437 env, (char *)name);
438 #endif /* USDT2 */
439
440 jclass result = NULL;
441 DT_RETURN_MARK(FindClass, jclass, (const jclass&)result);
442
443 // Remember if we are the first invocation of jni_FindClass
444 bool first_time = first_time_FindClass;
445 first_time_FindClass = false;
446
447 // Sanity check the name: it cannot be null or larger than the maximum size
448 // name we can fit in the constant pool.
449 if (name == NULL || (int)strlen(name) > Symbol::max_length()) {
450 THROW_MSG_0(vmSymbols::java_lang_NoClassDefFoundError(), name);
451 }
452
453 //%note jni_3
454 Handle loader;
455 Handle protection_domain;
456 // Find calling class
457 instanceKlassHandle k (THREAD, thread->security_get_caller_class(0));
458 if (k.not_null()) {
459 loader = Handle(THREAD, k->class_loader());
460 // Special handling to make sure JNI_OnLoad and JNI_OnUnload are executed
461 // in the correct class context.
462 if (loader.is_null() &&
463 k->name() == vmSymbols::java_lang_ClassLoader_NativeLibrary()) {
464 JavaValue result(T_OBJECT);
465 JavaCalls::call_static(&result, k,
466 vmSymbols::getFromClass_name(),
467 vmSymbols::void_class_signature(),
468 thread);
469 if (HAS_PENDING_EXCEPTION) {
470 Handle ex(thread, thread->pending_exception());
471 CLEAR_PENDING_EXCEPTION;
472 THROW_HANDLE_0(ex);
473 }
474 oop mirror = (oop) result.get_jobject();
475 loader = Handle(THREAD,
476 InstanceKlass::cast(java_lang_Class::as_Klass(mirror))->class_loader());
477 protection_domain = Handle(THREAD,
478 InstanceKlass::cast(java_lang_Class::as_Klass(mirror))->protection_domain());
479 }
480 } else {
481 // We call ClassLoader.getSystemClassLoader to obtain the system class loader.
482 loader = Handle(THREAD, SystemDictionary::java_system_loader());
483 }
484
485 TempNewSymbol sym = SymbolTable::new_symbol(name, CHECK_NULL);
486 result = find_class_from_class_loader(env, sym, true, loader,
487 protection_domain, true, thread);
488
489 if (TraceClassResolution && result != NULL) {
490 trace_class_resolution(java_lang_Class::as_Klass(JNIHandles::resolve_non_null(result)));
491 }
492
493 // If we were the first invocation of jni_FindClass, we enable compilation again
494 // rather than just allowing invocation counter to overflow and decay.
495 // Controlled by flag DelayCompilationDuringStartup.
496 if (first_time && !CompileTheWorld)
497 CompilationPolicy::completed_vm_startup();
498
499 return result;
500 JNI_END
501
502 #ifndef USDT2
503 DT_RETURN_MARK_DECL(FromReflectedMethod, jmethodID);
504 #else /* USDT2 */
505 DT_RETURN_MARK_DECL(FromReflectedMethod, jmethodID
506 , HOTSPOT_JNI_FROMREFLECTEDMETHOD_RETURN((uintptr_t)_ret_ref));
507 #endif /* USDT2 */
508
509 JNI_ENTRY(jmethodID, jni_FromReflectedMethod(JNIEnv *env, jobject method))
510 JNIWrapper("FromReflectedMethod");
511 #ifndef USDT2
512 DTRACE_PROBE2(hotspot_jni, FromReflectedMethod__entry, env, method);
513 #else /* USDT2 */
514 HOTSPOT_JNI_FROMREFLECTEDMETHOD_ENTRY(
515 env, method);
516 #endif /* USDT2 */
517 jmethodID ret = NULL;
518 DT_RETURN_MARK(FromReflectedMethod, jmethodID, (const jmethodID&)ret);
519
520 // method is a handle to a java.lang.reflect.Method object
521 oop reflected = JNIHandles::resolve_non_null(method);
522 oop mirror = NULL;
523 int slot = 0;
524
525 if (reflected->klass() == SystemDictionary::reflect_Constructor_klass()) {
526 mirror = java_lang_reflect_Constructor::clazz(reflected);
527 slot = java_lang_reflect_Constructor::slot(reflected);
528 } else {
529 assert(reflected->klass() == SystemDictionary::reflect_Method_klass(), "wrong type");
530 mirror = java_lang_reflect_Method::clazz(reflected);
531 slot = java_lang_reflect_Method::slot(reflected);
532 }
533 Klass* k = java_lang_Class::as_Klass(mirror);
534
535 KlassHandle k1(THREAD, k);
536 // Make sure class is initialized before handing id's out to methods
537 k1()->initialize(CHECK_NULL);
538 Method* m = InstanceKlass::cast(k1())->method_with_idnum(slot);
539 ret = m==NULL? NULL : m->jmethod_id(); // return NULL if reflected method deleted
540 return ret;
541 JNI_END
542
543 #ifndef USDT2
544 DT_RETURN_MARK_DECL(FromReflectedField, jfieldID);
545 #else /* USDT2 */
546 DT_RETURN_MARK_DECL(FromReflectedField, jfieldID
547 , HOTSPOT_JNI_FROMREFLECTEDFIELD_RETURN((uintptr_t)_ret_ref));
548 #endif /* USDT2 */
549
550 JNI_ENTRY(jfieldID, jni_FromReflectedField(JNIEnv *env, jobject field))
551 JNIWrapper("FromReflectedField");
552 #ifndef USDT2
553 DTRACE_PROBE2(hotspot_jni, FromReflectedField__entry, env, field);
554 #else /* USDT2 */
555 HOTSPOT_JNI_FROMREFLECTEDFIELD_ENTRY(
556 env, field);
557 #endif /* USDT2 */
558 jfieldID ret = NULL;
559 DT_RETURN_MARK(FromReflectedField, jfieldID, (const jfieldID&)ret);
560
561 // field is a handle to a java.lang.reflect.Field object
562 oop reflected = JNIHandles::resolve_non_null(field);
563 oop mirror = java_lang_reflect_Field::clazz(reflected);
564 Klass* k = java_lang_Class::as_Klass(mirror);
565 int slot = java_lang_reflect_Field::slot(reflected);
566 int modifiers = java_lang_reflect_Field::modifiers(reflected);
567
568 KlassHandle k1(THREAD, k);
569 // Make sure class is initialized before handing id's out to fields
570 k1()->initialize(CHECK_NULL);
571
572 // First check if this is a static field
573 if (modifiers & JVM_ACC_STATIC) {
574 intptr_t offset = InstanceKlass::cast(k1())->field_offset( slot );
575 JNIid* id = InstanceKlass::cast(k1())->jni_id_for(offset);
576 assert(id != NULL, "corrupt Field object");
577 debug_only(id->set_is_static_field_id();)
578 // A jfieldID for a static field is a JNIid specifying the field holder and the offset within the Klass*
579 ret = jfieldIDWorkaround::to_static_jfieldID(id);
580 return ret;
581 }
582
583 // The slot is the index of the field description in the field-array
584 // The jfieldID is the offset of the field within the object
585 // It may also have hash bits for k, if VerifyJNIFields is turned on.
586 intptr_t offset = InstanceKlass::cast(k1())->field_offset( slot );
587 assert(InstanceKlass::cast(k1())->contains_field_offset(offset), "stay within object");
588 ret = jfieldIDWorkaround::to_instance_jfieldID(k1(), offset);
589 return ret;
590 JNI_END
591
592 #ifndef USDT2
593 DT_RETURN_MARK_DECL(ToReflectedMethod, jobject);
594 #else /* USDT2 */
595 DT_RETURN_MARK_DECL(ToReflectedMethod, jobject
596 , HOTSPOT_JNI_TOREFLECTEDMETHOD_RETURN(_ret_ref));
597 #endif /* USDT2 */
598
599 JNI_ENTRY(jobject, jni_ToReflectedMethod(JNIEnv *env, jclass cls, jmethodID method_id, jboolean isStatic))
600 JNIWrapper("ToReflectedMethod");
601 #ifndef USDT2
602 DTRACE_PROBE4(hotspot_jni, ToReflectedMethod__entry, env, cls, method_id, isStatic);
603 #else /* USDT2 */
604 HOTSPOT_JNI_TOREFLECTEDMETHOD_ENTRY(
605 env, cls, (uintptr_t) method_id, isStatic);
606 #endif /* USDT2 */
607 jobject ret = NULL;
608 DT_RETURN_MARK(ToReflectedMethod, jobject, (const jobject&)ret);
609
610 methodHandle m (THREAD, Method::resolve_jmethod_id(method_id));
611 assert(m->is_static() == (isStatic != 0), "jni_ToReflectedMethod access flags doesn't match");
612 oop reflection_method;
613 if (m->is_initializer()) {
614 reflection_method = Reflection::new_constructor(m, CHECK_NULL);
615 } else {
616 reflection_method = Reflection::new_method(m, UseNewReflection, false, CHECK_NULL);
617 }
618 ret = JNIHandles::make_local(env, reflection_method);
619 return ret;
620 JNI_END
621
622 #ifndef USDT2
623 DT_RETURN_MARK_DECL(GetSuperclass, jclass);
624 #else /* USDT2 */
625 DT_RETURN_MARK_DECL(GetSuperclass, jclass
626 , HOTSPOT_JNI_GETSUPERCLASS_RETURN(_ret_ref));
627 #endif /* USDT2 */
628
629 JNI_ENTRY(jclass, jni_GetSuperclass(JNIEnv *env, jclass sub))
630 JNIWrapper("GetSuperclass");
631 #ifndef USDT2
632 DTRACE_PROBE2(hotspot_jni, GetSuperclass__entry, env, sub);
633 #else /* USDT2 */
634 HOTSPOT_JNI_GETSUPERCLASS_ENTRY(
635 env, sub);
636 #endif /* USDT2 */
637 jclass obj = NULL;
638 DT_RETURN_MARK(GetSuperclass, jclass, (const jclass&)obj);
639
640 oop mirror = JNIHandles::resolve_non_null(sub);
641 // primitive classes return NULL
642 if (java_lang_Class::is_primitive(mirror)) return NULL;
643
644 // Rules of Class.getSuperClass as implemented by KLass::java_super:
645 // arrays return Object
646 // interfaces return NULL
647 // proper classes return Klass::super()
648 Klass* k = java_lang_Class::as_Klass(mirror);
649 if (k->is_interface()) return NULL;
650
651 // return mirror for superclass
652 Klass* super = k->java_super();
653 // super2 is the value computed by the compiler's getSuperClass intrinsic:
654 debug_only(Klass* super2 = ( k->oop_is_array()
655 ? SystemDictionary::Object_klass()
656 : k->super() ) );
657 assert(super == super2,
658 "java_super computation depends on interface, array, other super");
659 obj = (super == NULL) ? NULL : (jclass) JNIHandles::make_local(super->java_mirror());
660 return obj;
661 JNI_END
662
663 JNI_QUICK_ENTRY(jboolean, jni_IsAssignableFrom(JNIEnv *env, jclass sub, jclass super))
664 JNIWrapper("IsSubclassOf");
665 #ifndef USDT2
666 DTRACE_PROBE3(hotspot_jni, IsAssignableFrom__entry, env, sub, super);
667 #else /* USDT2 */
668 HOTSPOT_JNI_ISASSIGNABLEFROM_ENTRY(
669 env, sub, super);
670 #endif /* USDT2 */
671 oop sub_mirror = JNIHandles::resolve_non_null(sub);
672 oop super_mirror = JNIHandles::resolve_non_null(super);
673 if (java_lang_Class::is_primitive(sub_mirror) ||
674 java_lang_Class::is_primitive(super_mirror)) {
675 jboolean ret = (sub_mirror == super_mirror);
676 #ifndef USDT2
677 DTRACE_PROBE1(hotspot_jni, IsAssignableFrom__return, ret);
678 #else /* USDT2 */
679 HOTSPOT_JNI_ISASSIGNABLEFROM_RETURN(
680 ret);
681 #endif /* USDT2 */
682 return ret;
683 }
684 Klass* sub_klass = java_lang_Class::as_Klass(sub_mirror);
685 Klass* super_klass = java_lang_Class::as_Klass(super_mirror);
686 assert(sub_klass != NULL && super_klass != NULL, "invalid arguments to jni_IsAssignableFrom");
687 jboolean ret = sub_klass->is_subtype_of(super_klass) ?
688 JNI_TRUE : JNI_FALSE;
689 #ifndef USDT2
690 DTRACE_PROBE1(hotspot_jni, IsAssignableFrom__return, ret);
691 #else /* USDT2 */
692 HOTSPOT_JNI_ISASSIGNABLEFROM_RETURN(
693 ret);
694 #endif /* USDT2 */
695 return ret;
696 JNI_END
697
698 #ifndef USDT2
699 DT_RETURN_MARK_DECL(Throw, jint);
700 #else /* USDT2 */
701 DT_RETURN_MARK_DECL(Throw, jint
702 , HOTSPOT_JNI_THROW_RETURN(_ret_ref));
703 #endif /* USDT2 */
704
705 JNI_ENTRY(jint, jni_Throw(JNIEnv *env, jthrowable obj))
706 JNIWrapper("Throw");
707 #ifndef USDT2
708 DTRACE_PROBE2(hotspot_jni, Throw__entry, env, obj);
709 #else /* USDT2 */
710 HOTSPOT_JNI_THROW_ENTRY(
711 env, obj);
712 #endif /* USDT2 */
713 jint ret = JNI_OK;
714 DT_RETURN_MARK(Throw, jint, (const jint&)ret);
715
716 THROW_OOP_(JNIHandles::resolve(obj), JNI_OK);
717 ShouldNotReachHere();
718 JNI_END
719
720 #ifndef USDT2
721 DT_RETURN_MARK_DECL(ThrowNew, jint);
722 #else /* USDT2 */
723 DT_RETURN_MARK_DECL(ThrowNew, jint
724 , HOTSPOT_JNI_THROWNEW_RETURN(_ret_ref));
725 #endif /* USDT2 */
726
727 JNI_ENTRY(jint, jni_ThrowNew(JNIEnv *env, jclass clazz, const char *message))
728 JNIWrapper("ThrowNew");
729 #ifndef USDT2
730 DTRACE_PROBE3(hotspot_jni, ThrowNew__entry, env, clazz, message);
731 #else /* USDT2 */
732 HOTSPOT_JNI_THROWNEW_ENTRY(
733 env, clazz, (char *) message);
734 #endif /* USDT2 */
735 jint ret = JNI_OK;
736 DT_RETURN_MARK(ThrowNew, jint, (const jint&)ret);
737
738 InstanceKlass* k = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz)));
739 Symbol* name = k->name();
740 Handle class_loader (THREAD, k->class_loader());
741 Handle protection_domain (THREAD, k->protection_domain());
742 THROW_MSG_LOADER_(name, (char *)message, class_loader, protection_domain, JNI_OK);
743 ShouldNotReachHere();
744 JNI_END
745
746
747 // JNI functions only transform a pending async exception to a synchronous
748 // exception in ExceptionOccurred and ExceptionCheck calls, since
749 // delivering an async exception in other places won't change the native
750 // code's control flow and would be harmful when native code further calls
751 // JNI functions with a pending exception. Async exception is also checked
752 // during the call, so ExceptionOccurred/ExceptionCheck won't return
753 // false but deliver the async exception at the very end during
754 // state transition.
755
756 static void jni_check_async_exceptions(JavaThread *thread) {
757 assert(thread == Thread::current(), "must be itself");
758 thread->check_and_handle_async_exceptions();
759 }
760
761 JNI_ENTRY_NO_PRESERVE(jthrowable, jni_ExceptionOccurred(JNIEnv *env))
762 JNIWrapper("ExceptionOccurred");
763 #ifndef USDT2
764 DTRACE_PROBE1(hotspot_jni, ExceptionOccurred__entry, env);
765 #else /* USDT2 */
766 HOTSPOT_JNI_EXCEPTIONOCCURRED_ENTRY(
767 env);
768 #endif /* USDT2 */
769 jni_check_async_exceptions(thread);
770 oop exception = thread->pending_exception();
771 jthrowable ret = (jthrowable) JNIHandles::make_local(env, exception);
772 #ifndef USDT2
773 DTRACE_PROBE1(hotspot_jni, ExceptionOccurred__return, ret);
774 #else /* USDT2 */
775 HOTSPOT_JNI_EXCEPTIONOCCURRED_RETURN(
776 ret);
777 #endif /* USDT2 */
778 return ret;
779 JNI_END
780
781
782 JNI_ENTRY_NO_PRESERVE(void, jni_ExceptionDescribe(JNIEnv *env))
783 JNIWrapper("ExceptionDescribe");
784 #ifndef USDT2
785 DTRACE_PROBE1(hotspot_jni, ExceptionDescribe__entry, env);
786 #else /* USDT2 */
787 HOTSPOT_JNI_EXCEPTIONDESCRIBE_ENTRY(
788 env);
789 #endif /* USDT2 */
790 if (thread->has_pending_exception()) {
791 Handle ex(thread, thread->pending_exception());
792 thread->clear_pending_exception();
793 if (ex->is_a(SystemDictionary::ThreadDeath_klass())) {
794 // Don't print anything if we are being killed.
795 } else {
796 jio_fprintf(defaultStream::error_stream(), "Exception ");
797 if (thread != NULL && thread->threadObj() != NULL) {
798 ResourceMark rm(THREAD);
799 jio_fprintf(defaultStream::error_stream(),
800 "in thread \"%s\" ", thread->get_thread_name());
801 }
802 if (ex->is_a(SystemDictionary::Throwable_klass())) {
803 JavaValue result(T_VOID);
804 JavaCalls::call_virtual(&result,
805 ex,
806 KlassHandle(THREAD,
807 SystemDictionary::Throwable_klass()),
808 vmSymbols::printStackTrace_name(),
809 vmSymbols::void_method_signature(),
810 THREAD);
811 // If an exception is thrown in the call it gets thrown away. Not much
812 // we can do with it. The native code that calls this, does not check
813 // for the exception - hence, it might still be in the thread when DestroyVM gets
814 // called, potentially causing a few asserts to trigger - since no pending exception
815 // is expected.
816 CLEAR_PENDING_EXCEPTION;
817 } else {
818 ResourceMark rm(THREAD);
819 jio_fprintf(defaultStream::error_stream(),
820 ". Uncaught exception of type %s.",
821 ex->klass()->external_name());
822 }
823 }
824 }
825 #ifndef USDT2
826 DTRACE_PROBE(hotspot_jni, ExceptionDescribe__return);
827 #else /* USDT2 */
828 HOTSPOT_JNI_EXCEPTIONDESCRIBE_RETURN(
829 );
830 #endif /* USDT2 */
831 JNI_END
832
833
834 JNI_QUICK_ENTRY(void, jni_ExceptionClear(JNIEnv *env))
835 JNIWrapper("ExceptionClear");
836 #ifndef USDT2
837 DTRACE_PROBE1(hotspot_jni, ExceptionClear__entry, env);
838 #else /* USDT2 */
839 HOTSPOT_JNI_EXCEPTIONCLEAR_ENTRY(
840 env);
841 #endif /* USDT2 */
842
843 // The jni code might be using this API to clear java thrown exception.
844 // So just mark jvmti thread exception state as exception caught.
845 JvmtiThreadState *state = JavaThread::current()->jvmti_thread_state();
846 if (state != NULL && state->is_exception_detected()) {
847 state->set_exception_caught();
848 }
849 thread->clear_pending_exception();
850 #ifndef USDT2
851 DTRACE_PROBE(hotspot_jni, ExceptionClear__return);
852 #else /* USDT2 */
853 HOTSPOT_JNI_EXCEPTIONCLEAR_RETURN(
854 );
855 #endif /* USDT2 */
856 JNI_END
857
858
859 JNI_ENTRY(void, jni_FatalError(JNIEnv *env, const char *msg))
860 JNIWrapper("FatalError");
861 #ifndef USDT2
862 DTRACE_PROBE2(hotspot_jni, FatalError__entry, env, msg);
863 #else /* USDT2 */
864 HOTSPOT_JNI_FATALERROR_ENTRY(
865 env, (char *) msg);
866 #endif /* USDT2 */
867 tty->print_cr("FATAL ERROR in native method: %s", msg);
868 thread->print_stack();
869 os::abort(); // Dump core and abort
870 JNI_END
871
872
873 JNI_ENTRY(jint, jni_PushLocalFrame(JNIEnv *env, jint capacity))
874 JNIWrapper("PushLocalFrame");
875 #ifndef USDT2
876 DTRACE_PROBE2(hotspot_jni, PushLocalFrame__entry, env, capacity);
877 #else /* USDT2 */
878 HOTSPOT_JNI_PUSHLOCALFRAME_ENTRY(
879 env, capacity);
880 #endif /* USDT2 */
881 //%note jni_11
882 if (capacity < 0 || capacity > MAX_REASONABLE_LOCAL_CAPACITY) {
883 #ifndef USDT2
884 DTRACE_PROBE1(hotspot_jni, PushLocalFrame__return, JNI_ERR);
885 #else /* USDT2 */
886 HOTSPOT_JNI_PUSHLOCALFRAME_RETURN(
887 (uint32_t)JNI_ERR);
888 #endif /* USDT2 */
889 return JNI_ERR;
890 }
891 JNIHandleBlock* old_handles = thread->active_handles();
892 JNIHandleBlock* new_handles = JNIHandleBlock::allocate_block(thread);
893 assert(new_handles != NULL, "should not be NULL");
894 new_handles->set_pop_frame_link(old_handles);
895 thread->set_active_handles(new_handles);
896 jint ret = JNI_OK;
897 #ifndef USDT2
898 DTRACE_PROBE1(hotspot_jni, PushLocalFrame__return, ret);
899 #else /* USDT2 */
900 HOTSPOT_JNI_PUSHLOCALFRAME_RETURN(
901 ret);
902 #endif /* USDT2 */
903 return ret;
904 JNI_END
905
906
907 JNI_ENTRY(jobject, jni_PopLocalFrame(JNIEnv *env, jobject result))
908 JNIWrapper("PopLocalFrame");
909 #ifndef USDT2
910 DTRACE_PROBE2(hotspot_jni, PopLocalFrame__entry, env, result);
911 #else /* USDT2 */
912 HOTSPOT_JNI_POPLOCALFRAME_ENTRY(
913 env, result);
914 #endif /* USDT2 */
915 //%note jni_11
916 Handle result_handle(thread, JNIHandles::resolve(result));
917 JNIHandleBlock* old_handles = thread->active_handles();
918 JNIHandleBlock* new_handles = old_handles->pop_frame_link();
919 if (new_handles != NULL) {
920 // As a sanity check we only release the handle blocks if the pop_frame_link is not NULL.
921 // This way code will still work if PopLocalFrame is called without a corresponding
922 // PushLocalFrame call. Note that we set the pop_frame_link to NULL explicitly, otherwise
923 // the release_block call will release the blocks.
924 thread->set_active_handles(new_handles);
925 old_handles->set_pop_frame_link(NULL); // clear link we won't release new_handles below
926 JNIHandleBlock::release_block(old_handles, thread); // may block
927 result = JNIHandles::make_local(thread, result_handle());
928 }
929 #ifndef USDT2
930 DTRACE_PROBE1(hotspot_jni, PopLocalFrame__return, result);
931 #else /* USDT2 */
932 HOTSPOT_JNI_POPLOCALFRAME_RETURN(
933 result);
934 #endif /* USDT2 */
935 return result;
936 JNI_END
937
938
939 JNI_ENTRY(jobject, jni_NewGlobalRef(JNIEnv *env, jobject ref))
940 JNIWrapper("NewGlobalRef");
941 #ifndef USDT2
942 DTRACE_PROBE2(hotspot_jni, NewGlobalRef__entry, env, ref);
943 #else /* USDT2 */
944 HOTSPOT_JNI_NEWGLOBALREF_ENTRY(
945 env, ref);
946 #endif /* USDT2 */
947 Handle ref_handle(thread, JNIHandles::resolve(ref));
948 jobject ret = JNIHandles::make_global(ref_handle);
949 #ifndef USDT2
950 DTRACE_PROBE1(hotspot_jni, NewGlobalRef__return, ret);
951 #else /* USDT2 */
952 HOTSPOT_JNI_NEWGLOBALREF_RETURN(
953 ret);
954 #endif /* USDT2 */
955 return ret;
956 JNI_END
957
958 // Must be JNI_ENTRY (with HandleMark)
959 JNI_ENTRY_NO_PRESERVE(void, jni_DeleteGlobalRef(JNIEnv *env, jobject ref))
960 JNIWrapper("DeleteGlobalRef");
961 #ifndef USDT2
962 DTRACE_PROBE2(hotspot_jni, DeleteGlobalRef__entry, env, ref);
963 #else /* USDT2 */
964 HOTSPOT_JNI_DELETEGLOBALREF_ENTRY(
965 env, ref);
966 #endif /* USDT2 */
967 JNIHandles::destroy_global(ref);
968 #ifndef USDT2
969 DTRACE_PROBE(hotspot_jni, DeleteGlobalRef__return);
970 #else /* USDT2 */
971 HOTSPOT_JNI_DELETEGLOBALREF_RETURN(
972 );
973 #endif /* USDT2 */
974 JNI_END
975
976 JNI_QUICK_ENTRY(void, jni_DeleteLocalRef(JNIEnv *env, jobject obj))
977 JNIWrapper("DeleteLocalRef");
978 #ifndef USDT2
979 DTRACE_PROBE2(hotspot_jni, DeleteLocalRef__entry, env, obj);
980 #else /* USDT2 */
981 HOTSPOT_JNI_DELETELOCALREF_ENTRY(
982 env, obj);
983 #endif /* USDT2 */
984 JNIHandles::destroy_local(obj);
985 #ifndef USDT2
986 DTRACE_PROBE(hotspot_jni, DeleteLocalRef__return);
987 #else /* USDT2 */
988 HOTSPOT_JNI_DELETELOCALREF_RETURN(
989 );
990 #endif /* USDT2 */
991 JNI_END
992
993 JNI_QUICK_ENTRY(jboolean, jni_IsSameObject(JNIEnv *env, jobject r1, jobject r2))
994 JNIWrapper("IsSameObject");
995 #ifndef USDT2
996 DTRACE_PROBE3(hotspot_jni, IsSameObject__entry, env, r1, r2);
997 #else /* USDT2 */
998 HOTSPOT_JNI_ISSAMEOBJECT_ENTRY(
999 env, r1, r2);
1000 #endif /* USDT2 */
1001 oop a = JNIHandles::resolve(r1);
1002 oop b = JNIHandles::resolve(r2);
1003 jboolean ret = (a == b) ? JNI_TRUE : JNI_FALSE;
1004 #ifndef USDT2
1005 DTRACE_PROBE1(hotspot_jni, IsSameObject__return, ret);
1006 #else /* USDT2 */
1007 HOTSPOT_JNI_ISSAMEOBJECT_RETURN(
1008 ret);
1009 #endif /* USDT2 */
1010 return ret;
1011 JNI_END
1012
1013
1014 JNI_ENTRY(jobject, jni_NewLocalRef(JNIEnv *env, jobject ref))
1015 JNIWrapper("NewLocalRef");
1016 #ifndef USDT2
1017 DTRACE_PROBE2(hotspot_jni, NewLocalRef__entry, env, ref);
1018 #else /* USDT2 */
1019 HOTSPOT_JNI_NEWLOCALREF_ENTRY(
1020 env, ref);
1021 #endif /* USDT2 */
1022 jobject ret = JNIHandles::make_local(env, JNIHandles::resolve(ref));
1023 #ifndef USDT2
1024 DTRACE_PROBE1(hotspot_jni, NewLocalRef__return, ret);
1025 #else /* USDT2 */
1026 HOTSPOT_JNI_NEWLOCALREF_RETURN(
1027 ret);
1028 #endif /* USDT2 */
1029 return ret;
1030 JNI_END
1031
1032 JNI_LEAF(jint, jni_EnsureLocalCapacity(JNIEnv *env, jint capacity))
1033 JNIWrapper("EnsureLocalCapacity");
1034 #ifndef USDT2
1035 DTRACE_PROBE2(hotspot_jni, EnsureLocalCapacity__entry, env, capacity);
1036 #else /* USDT2 */
1037 HOTSPOT_JNI_ENSURELOCALCAPACITY_ENTRY(
1038 env, capacity);
1039 #endif /* USDT2 */
1040 jint ret;
1041 if (capacity >= 0 && capacity <= MAX_REASONABLE_LOCAL_CAPACITY) {
1042 ret = JNI_OK;
1043 } else {
1044 ret = JNI_ERR;
1045 }
1046 #ifndef USDT2
1047 DTRACE_PROBE1(hotspot_jni, EnsureLocalCapacity__return, ret);
1048 #else /* USDT2 */
1049 HOTSPOT_JNI_ENSURELOCALCAPACITY_RETURN(
1050 ret);
1051 #endif /* USDT2 */
1052 return ret;
1053 JNI_END
1054
1055 // Return the Handle Type
1056 JNI_LEAF(jobjectRefType, jni_GetObjectRefType(JNIEnv *env, jobject obj))
1057 JNIWrapper("GetObjectRefType");
1058 #ifndef USDT2
1059 DTRACE_PROBE2(hotspot_jni, GetObjectRefType__entry, env, obj);
1060 #else /* USDT2 */
1061 HOTSPOT_JNI_GETOBJECTREFTYPE_ENTRY(
1062 env, obj);
1063 #endif /* USDT2 */
1064 jobjectRefType ret;
1065 if (JNIHandles::is_local_handle(thread, obj) ||
1066 JNIHandles::is_frame_handle(thread, obj))
1067 ret = JNILocalRefType;
1068 else if (JNIHandles::is_global_handle(obj))
1069 ret = JNIGlobalRefType;
1070 else if (JNIHandles::is_weak_global_handle(obj))
1071 ret = JNIWeakGlobalRefType;
1072 else
1073 ret = JNIInvalidRefType;
1074 #ifndef USDT2
1075 DTRACE_PROBE1(hotspot_jni, GetObjectRefType__return, ret);
1076 #else /* USDT2 */
1077 HOTSPOT_JNI_GETOBJECTREFTYPE_RETURN(
1078 (void *) ret);
1079 #endif /* USDT2 */
1080 return ret;
1081 JNI_END
1082
1083
1084 class JNI_ArgumentPusher : public SignatureIterator {
1085 protected:
1086 JavaCallArguments* _arguments;
1087
1088 virtual void get_bool () = 0;
1089 virtual void get_char () = 0;
1090 virtual void get_short () = 0;
1091 virtual void get_byte () = 0;
1092 virtual void get_int () = 0;
1093 virtual void get_long () = 0;
1094 virtual void get_float () = 0;
1095 virtual void get_double () = 0;
1096 virtual void get_object () = 0;
1097
1098 JNI_ArgumentPusher(Symbol* signature) : SignatureIterator(signature) {
1099 this->_return_type = T_ILLEGAL;
1100 _arguments = NULL;
1101 }
1102
1103 public:
1104 virtual void iterate( uint64_t fingerprint ) = 0;
1105
1106 void set_java_argument_object(JavaCallArguments *arguments) { _arguments = arguments; }
1107
1108 inline void do_bool() { if (!is_return_type()) get_bool(); }
1109 inline void do_char() { if (!is_return_type()) get_char(); }
1110 inline void do_short() { if (!is_return_type()) get_short(); }
1111 inline void do_byte() { if (!is_return_type()) get_byte(); }
1112 inline void do_int() { if (!is_return_type()) get_int(); }
1113 inline void do_long() { if (!is_return_type()) get_long(); }
1114 inline void do_float() { if (!is_return_type()) get_float(); }
1115 inline void do_double() { if (!is_return_type()) get_double(); }
1116 inline void do_object(int begin, int end) { if (!is_return_type()) get_object(); }
1117 inline void do_array(int begin, int end) { if (!is_return_type()) get_object(); } // do_array uses get_object -- there is no get_array
1118 inline void do_void() { }
1119
1120 JavaCallArguments* arguments() { return _arguments; }
1121 void push_receiver(Handle h) { _arguments->push_oop(h); }
1122 };
1123
1124
1125 class JNI_ArgumentPusherVaArg : public JNI_ArgumentPusher {
1126 protected:
1127 va_list _ap;
1128
1129 inline void get_bool() { _arguments->push_int(va_arg(_ap, jint)); } // bool is coerced to int when using va_arg
1130 inline void get_char() { _arguments->push_int(va_arg(_ap, jint)); } // char is coerced to int when using va_arg
1131 inline void get_short() { _arguments->push_int(va_arg(_ap, jint)); } // short is coerced to int when using va_arg
1132 inline void get_byte() { _arguments->push_int(va_arg(_ap, jint)); } // byte is coerced to int when using va_arg
1133 inline void get_int() { _arguments->push_int(va_arg(_ap, jint)); }
1134
1135 // each of these paths is exercized by the various jck Call[Static,Nonvirtual,][Void,Int,..]Method[A,V,] tests
1136
1137 inline void get_long() { _arguments->push_long(va_arg(_ap, jlong)); }
1138 inline void get_float() { _arguments->push_float((jfloat)va_arg(_ap, jdouble)); } // float is coerced to double w/ va_arg
1139 inline void get_double() { _arguments->push_double(va_arg(_ap, jdouble)); }
1140 inline void get_object() { jobject l = va_arg(_ap, jobject);
1141 _arguments->push_oop(Handle((oop *)l, false)); }
1142
1143 inline void set_ap(va_list rap) {
1144 #ifdef va_copy
1145 va_copy(_ap, rap);
1146 #elif defined (__va_copy)
1147 __va_copy(_ap, rap);
1148 #else
1149 _ap = rap;
1150 #endif
1151 }
1152
1153 public:
1154 JNI_ArgumentPusherVaArg(Symbol* signature, va_list rap)
1155 : JNI_ArgumentPusher(signature) {
1156 set_ap(rap);
1157 }
1158 JNI_ArgumentPusherVaArg(jmethodID method_id, va_list rap)
1159 : JNI_ArgumentPusher(Method::resolve_jmethod_id(method_id)->signature()) {
1160 set_ap(rap);
1161 }
1162
1163 // Optimized path if we have the bitvector form of signature
1164 void iterate( uint64_t fingerprint ) {
1165 if ( fingerprint == UCONST64(-1) ) SignatureIterator::iterate();// Must be too many arguments
1166 else {
1167 _return_type = (BasicType)((fingerprint >> static_feature_size) &
1168 result_feature_mask);
1169
1170 assert(fingerprint, "Fingerprint should not be 0");
1171 fingerprint = fingerprint >> (static_feature_size + result_feature_size);
1172 while ( 1 ) {
1173 switch ( fingerprint & parameter_feature_mask ) {
1174 case bool_parm:
1175 case char_parm:
1176 case short_parm:
1177 case byte_parm:
1178 case int_parm:
1179 get_int();
1180 break;
1181 case obj_parm:
1182 get_object();
1183 break;
1184 case long_parm:
1185 get_long();
1186 break;
1187 case float_parm:
1188 get_float();
1189 break;
1190 case double_parm:
1191 get_double();
1192 break;
1193 case done_parm:
1194 return;
1195 break;
1196 default:
1197 ShouldNotReachHere();
1198 break;
1199 }
1200 fingerprint >>= parameter_feature_size;
1201 }
1202 }
1203 }
1204 };
1205
1206
1207 class JNI_ArgumentPusherArray : public JNI_ArgumentPusher {
1208 protected:
1209 const jvalue *_ap;
1210
1211 inline void get_bool() { _arguments->push_int((jint)(_ap++)->z); }
1212 inline void get_char() { _arguments->push_int((jint)(_ap++)->c); }
1213 inline void get_short() { _arguments->push_int((jint)(_ap++)->s); }
1214 inline void get_byte() { _arguments->push_int((jint)(_ap++)->b); }
1215 inline void get_int() { _arguments->push_int((jint)(_ap++)->i); }
1216
1217 inline void get_long() { _arguments->push_long((_ap++)->j); }
1218 inline void get_float() { _arguments->push_float((_ap++)->f); }
1219 inline void get_double() { _arguments->push_double((_ap++)->d);}
1220 inline void get_object() { _arguments->push_oop(Handle((oop *)(_ap++)->l, false)); }
1221
1222 inline void set_ap(const jvalue *rap) { _ap = rap; }
1223
1224 public:
1225 JNI_ArgumentPusherArray(Symbol* signature, const jvalue *rap)
1226 : JNI_ArgumentPusher(signature) {
1227 set_ap(rap);
1228 }
1229 JNI_ArgumentPusherArray(jmethodID method_id, const jvalue *rap)
1230 : JNI_ArgumentPusher(Method::resolve_jmethod_id(method_id)->signature()) {
1231 set_ap(rap);
1232 }
1233
1234 // Optimized path if we have the bitvector form of signature
1235 void iterate( uint64_t fingerprint ) {
1236 if ( fingerprint == UCONST64(-1) ) SignatureIterator::iterate(); // Must be too many arguments
1237 else {
1238 _return_type = (BasicType)((fingerprint >> static_feature_size) &
1239 result_feature_mask);
1240 assert(fingerprint, "Fingerprint should not be 0");
1241 fingerprint = fingerprint >> (static_feature_size + result_feature_size);
1242 while ( 1 ) {
1243 switch ( fingerprint & parameter_feature_mask ) {
1244 case bool_parm:
1245 get_bool();
1246 break;
1247 case char_parm:
1248 get_char();
1249 break;
1250 case short_parm:
1251 get_short();
1252 break;
1253 case byte_parm:
1254 get_byte();
1255 break;
1256 case int_parm:
1257 get_int();
1258 break;
1259 case obj_parm:
1260 get_object();
1261 break;
1262 case long_parm:
1263 get_long();
1264 break;
1265 case float_parm:
1266 get_float();
1267 break;
1268 case double_parm:
1269 get_double();
1270 break;
1271 case done_parm:
1272 return;
1273 break;
1274 default:
1275 ShouldNotReachHere();
1276 break;
1277 }
1278 fingerprint >>= parameter_feature_size;
1279 }
1280 }
1281 }
1282 };
1283
1284
1285 enum JNICallType {
1286 JNI_STATIC,
1287 JNI_VIRTUAL,
1288 JNI_NONVIRTUAL
1289 };
1290
1291
1292
1293 static void jni_invoke_static(JNIEnv *env, JavaValue* result, jobject receiver, JNICallType call_type, jmethodID method_id, JNI_ArgumentPusher *args, TRAPS) {
1294 methodHandle method(THREAD, Method::resolve_jmethod_id(method_id));
1295
1296 // Create object to hold arguments for the JavaCall, and associate it with
1297 // the jni parser
1298 ResourceMark rm(THREAD);
1299 int number_of_parameters = method->size_of_parameters();
1300 JavaCallArguments java_args(number_of_parameters);
1301 args->set_java_argument_object(&java_args);
1302
1303 assert(method->is_static(), "method should be static");
1304
1305 // Fill out JavaCallArguments object
1306 args->iterate( Fingerprinter(method).fingerprint() );
1307 // Initialize result type
1308 result->set_type(args->get_ret_type());
1309
1310 // Invoke the method. Result is returned as oop.
1311 JavaCalls::call(result, method, &java_args, CHECK);
1312
1313 // Convert result
1314 if (result->get_type() == T_OBJECT || result->get_type() == T_ARRAY) {
1315 result->set_jobject(JNIHandles::make_local(env, (oop) result->get_jobject()));
1316 }
1317 }
1318
1319
1320 static void jni_invoke_nonstatic(JNIEnv *env, JavaValue* result, jobject receiver, JNICallType call_type, jmethodID method_id, JNI_ArgumentPusher *args, TRAPS) {
1321 oop recv = JNIHandles::resolve(receiver);
1322 if (recv == NULL) {
1323 THROW(vmSymbols::java_lang_NullPointerException());
1324 }
1325 Handle h_recv(THREAD, recv);
1326
1327 int number_of_parameters;
1328 Method* selected_method;
1329 {
1330 Method* m = Method::resolve_jmethod_id(method_id);
1331 number_of_parameters = m->size_of_parameters();
1332 Klass* holder = m->method_holder();
1333 if (!(holder)->is_interface()) {
1334 // non-interface call -- for that little speed boost, don't handlize
1335 debug_only(No_Safepoint_Verifier nosafepoint;)
1336 if (call_type == JNI_VIRTUAL) {
1337 // jni_GetMethodID makes sure class is linked and initialized
1338 // so m should have a valid vtable index.
1339 assert(!m->has_itable_index(), "");
1340 int vtbl_index = m->vtable_index();
1341 if (vtbl_index != Method::nonvirtual_vtable_index) {
1342 Klass* k = h_recv->klass();
1343 // k might be an arrayKlassOop but all vtables start at
1344 // the same place. The cast is to avoid virtual call and assertion.
1345 InstanceKlass *ik = (InstanceKlass*)k;
1346 selected_method = ik->method_at_vtable(vtbl_index);
1347 } else {
1348 // final method
1349 selected_method = m;
1350 }
1351 } else {
1352 // JNI_NONVIRTUAL call
1353 selected_method = m;
1354 }
1355 } else {
1356 // interface call
1357 KlassHandle h_holder(THREAD, holder);
1358
1359 int itbl_index = m->itable_index();
1360 Klass* k = h_recv->klass();
1361 selected_method = InstanceKlass::cast(k)->method_at_itable(h_holder(), itbl_index, CHECK);
1362 }
1363 }
1364
1365 methodHandle method(THREAD, selected_method);
1366
1367 // Create object to hold arguments for the JavaCall, and associate it with
1368 // the jni parser
1369 ResourceMark rm(THREAD);
1370 JavaCallArguments java_args(number_of_parameters);
1371 args->set_java_argument_object(&java_args);
1372
1373 // handle arguments
1374 assert(!method->is_static(), "method should not be static");
1375 args->push_receiver(h_recv); // Push jobject handle
1376
1377 // Fill out JavaCallArguments object
1378 args->iterate( Fingerprinter(method).fingerprint() );
1379 // Initialize result type
1380 result->set_type(args->get_ret_type());
1381
1382 // Invoke the method. Result is returned as oop.
1383 JavaCalls::call(result, method, &java_args, CHECK);
1384
1385 // Convert result
1386 if (result->get_type() == T_OBJECT || result->get_type() == T_ARRAY) {
1387 result->set_jobject(JNIHandles::make_local(env, (oop) result->get_jobject()));
1388 }
1389 }
1390
1391
1392 static instanceOop alloc_object(jclass clazz, TRAPS) {
1393 KlassHandle k(THREAD, java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz)));
1394 k()->check_valid_for_instantiation(false, CHECK_NULL);
1395 InstanceKlass::cast(k())->initialize(CHECK_NULL);
1396 instanceOop ih = InstanceKlass::cast(k())->allocate_instance(THREAD);
1397 return ih;
1398 }
1399
1400 #ifndef USDT2
1401 DT_RETURN_MARK_DECL(AllocObject, jobject);
1402 #else /* USDT2 */
1403 DT_RETURN_MARK_DECL(AllocObject, jobject
1404 , HOTSPOT_JNI_ALLOCOBJECT_RETURN(_ret_ref));
1405 #endif /* USDT2 */
1406
1407 JNI_ENTRY(jobject, jni_AllocObject(JNIEnv *env, jclass clazz))
1408 JNIWrapper("AllocObject");
1409
1410 #ifndef USDT2
1411 DTRACE_PROBE2(hotspot_jni, AllocObject__entry, env, clazz);
1412 #else /* USDT2 */
1413 HOTSPOT_JNI_ALLOCOBJECT_ENTRY(
1414 env, clazz);
1415 #endif /* USDT2 */
1416 jobject ret = NULL;
1417 DT_RETURN_MARK(AllocObject, jobject, (const jobject&)ret);
1418
1419 instanceOop i = alloc_object(clazz, CHECK_NULL);
1420 ret = JNIHandles::make_local(env, i);
1421 return ret;
1422 JNI_END
1423
1424 #ifndef USDT2
1425 DT_RETURN_MARK_DECL(NewObjectA, jobject);
1426 #else /* USDT2 */
1427 DT_RETURN_MARK_DECL(NewObjectA, jobject
1428 , HOTSPOT_JNI_NEWOBJECTA_RETURN(_ret_ref));
1429 #endif /* USDT2 */
1430
1431 JNI_ENTRY(jobject, jni_NewObjectA(JNIEnv *env, jclass clazz, jmethodID methodID, const jvalue *args))
1432 JNIWrapper("NewObjectA");
1433 #ifndef USDT2
1434 DTRACE_PROBE3(hotspot_jni, NewObjectA__entry, env, clazz, methodID);
1435 #else /* USDT2 */
1436 HOTSPOT_JNI_NEWOBJECTA_ENTRY(
1437 env, clazz, (uintptr_t) methodID);
1438 #endif /* USDT2 */
1439 jobject obj = NULL;
1440 DT_RETURN_MARK(NewObjectA, jobject, (const jobject)obj);
1441
1442 instanceOop i = alloc_object(clazz, CHECK_NULL);
1443 obj = JNIHandles::make_local(env, i);
1444 JavaValue jvalue(T_VOID);
1445 JNI_ArgumentPusherArray ap(methodID, args);
1446 jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK_NULL);
1447 return obj;
1448 JNI_END
1449
1450 #ifndef USDT2
1451 DT_RETURN_MARK_DECL(NewObjectV, jobject);
1452 #else /* USDT2 */
1453 DT_RETURN_MARK_DECL(NewObjectV, jobject
1454 , HOTSPOT_JNI_NEWOBJECTV_RETURN(_ret_ref));
1455 #endif /* USDT2 */
1456
1457 JNI_ENTRY(jobject, jni_NewObjectV(JNIEnv *env, jclass clazz, jmethodID methodID, va_list args))
1458 JNIWrapper("NewObjectV");
1459 #ifndef USDT2
1460 DTRACE_PROBE3(hotspot_jni, NewObjectV__entry, env, clazz, methodID);
1461 #else /* USDT2 */
1462 HOTSPOT_JNI_NEWOBJECTV_ENTRY(
1463 env, clazz, (uintptr_t) methodID);
1464 #endif /* USDT2 */
1465 jobject obj = NULL;
1466 DT_RETURN_MARK(NewObjectV, jobject, (const jobject&)obj);
1467
1468 instanceOop i = alloc_object(clazz, CHECK_NULL);
1469 obj = JNIHandles::make_local(env, i);
1470 JavaValue jvalue(T_VOID);
1471 JNI_ArgumentPusherVaArg ap(methodID, args);
1472 jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK_NULL);
1473 return obj;
1474 JNI_END
1475
1476 #ifndef USDT2
1477 DT_RETURN_MARK_DECL(NewObject, jobject);
1478 #else /* USDT2 */
1479 DT_RETURN_MARK_DECL(NewObject, jobject
1480 , HOTSPOT_JNI_NEWOBJECT_RETURN(_ret_ref));
1481 #endif /* USDT2 */
1482
1483 JNI_ENTRY(jobject, jni_NewObject(JNIEnv *env, jclass clazz, jmethodID methodID, ...))
1484 JNIWrapper("NewObject");
1485 #ifndef USDT2
1486 DTRACE_PROBE3(hotspot_jni, NewObject__entry, env, clazz, methodID);
1487 #else /* USDT2 */
1488 HOTSPOT_JNI_NEWOBJECT_ENTRY(
1489 env, clazz, (uintptr_t) methodID);
1490 #endif /* USDT2 */
1491 jobject obj = NULL;
1492 DT_RETURN_MARK(NewObject, jobject, (const jobject&)obj);
1493
1494 instanceOop i = alloc_object(clazz, CHECK_NULL);
1495 obj = JNIHandles::make_local(env, i);
1496 va_list args;
1497 va_start(args, methodID);
1498 JavaValue jvalue(T_VOID);
1499 JNI_ArgumentPusherVaArg ap(methodID, args);
1500 jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK_NULL);
1501 va_end(args);
1502 return obj;
1503 JNI_END
1504
1505
1506 JNI_ENTRY(jclass, jni_GetObjectClass(JNIEnv *env, jobject obj))
1507 JNIWrapper("GetObjectClass");
1508 #ifndef USDT2
1509 DTRACE_PROBE2(hotspot_jni, GetObjectClass__entry, env, obj);
1510 #else /* USDT2 */
1511 HOTSPOT_JNI_GETOBJECTCLASS_ENTRY(
1512 env, obj);
1513 #endif /* USDT2 */
1514 Klass* k = JNIHandles::resolve_non_null(obj)->klass();
1515 jclass ret =
1516 (jclass) JNIHandles::make_local(env, k->java_mirror());
1517 #ifndef USDT2
1518 DTRACE_PROBE1(hotspot_jni, GetObjectClass__return, ret);
1519 #else /* USDT2 */
1520 HOTSPOT_JNI_GETOBJECTCLASS_RETURN(
1521 ret);
1522 #endif /* USDT2 */
1523 return ret;
1524 JNI_END
1525
1526 JNI_QUICK_ENTRY(jboolean, jni_IsInstanceOf(JNIEnv *env, jobject obj, jclass clazz))
1527 JNIWrapper("IsInstanceOf");
1528 #ifndef USDT2
1529 DTRACE_PROBE3(hotspot_jni, IsInstanceOf__entry, env, obj, clazz);
1530 #else /* USDT2 */
1531 HOTSPOT_JNI_ISINSTANCEOF_ENTRY(
1532 env, obj, clazz);
1533 #endif /* USDT2 */
1534 jboolean ret = JNI_TRUE;
1535 if (obj != NULL) {
1536 ret = JNI_FALSE;
1537 Klass* k = java_lang_Class::as_Klass(
1538 JNIHandles::resolve_non_null(clazz));
1539 if (k != NULL) {
1540 ret = JNIHandles::resolve_non_null(obj)->is_a(k) ? JNI_TRUE : JNI_FALSE;
1541 }
1542 }
1543 #ifndef USDT2
1544 DTRACE_PROBE1(hotspot_jni, IsInstanceOf__return, ret);
1545 #else /* USDT2 */
1546 HOTSPOT_JNI_ISINSTANCEOF_RETURN(
1547 ret);
1548 #endif /* USDT2 */
1549 return ret;
1550 JNI_END
1551
1552
1553 static jmethodID get_method_id(JNIEnv *env, jclass clazz, const char *name_str,
1554 const char *sig, bool is_static, TRAPS) {
1555 // %%%% This code should probably just call into a method in the LinkResolver
1556 //
1557 // The class should have been loaded (we have an instance of the class
1558 // passed in) so the method and signature should already be in the symbol
1559 // table. If they're not there, the method doesn't exist.
1560 const char *name_to_probe = (name_str == NULL)
1561 ? vmSymbols::object_initializer_name()->as_C_string()
1562 : name_str;
1563 TempNewSymbol name = SymbolTable::probe(name_to_probe, (int)strlen(name_to_probe));
1564 TempNewSymbol signature = SymbolTable::probe(sig, (int)strlen(sig));
1565
1566 if (name == NULL || signature == NULL) {
1567 THROW_MSG_0(vmSymbols::java_lang_NoSuchMethodError(), name_str);
1568 }
1569
1570 // Throw a NoSuchMethodError exception if we have an instance of a
1571 // primitive java.lang.Class
1572 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(clazz))) {
1573 THROW_MSG_0(vmSymbols::java_lang_NoSuchMethodError(), name_str);
1574 }
1575
1576 KlassHandle klass(THREAD,
1577 java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz)));
1578
1579 // Make sure class is linked and initialized before handing id's out to
1580 // Method*s.
1581 klass()->initialize(CHECK_NULL);
1582
1583 Method* m;
1584 if (name == vmSymbols::object_initializer_name() ||
1585 name == vmSymbols::class_initializer_name()) {
1586 // Never search superclasses for constructors
1587 if (klass->oop_is_instance()) {
1588 m = InstanceKlass::cast(klass())->find_method(name, signature);
1589 } else {
1590 m = NULL;
1591 }
1592 } else {
1593 m = klass->lookup_method(name, signature);
1594 // Look up interfaces
1595 if (m == NULL && klass->oop_is_instance()) {
1596 m = InstanceKlass::cast(klass())->lookup_method_in_all_interfaces(name,
1597 signature);
1598 }
1599 }
1600 if (m == NULL || (m->is_static() != is_static)) {
1601 THROW_MSG_0(vmSymbols::java_lang_NoSuchMethodError(), name_str);
1602 }
1603 return m->jmethod_id();
1604 }
1605
1606
1607 JNI_ENTRY(jmethodID, jni_GetMethodID(JNIEnv *env, jclass clazz,
1608 const char *name, const char *sig))
1609 JNIWrapper("GetMethodID");
1610 #ifndef USDT2
1611 DTRACE_PROBE4(hotspot_jni, GetMethodID__entry, env, clazz, name, sig);
1612 #else /* USDT2 */
1613 HOTSPOT_JNI_GETMETHODID_ENTRY(
1614 env, clazz, (char *) name, (char *) sig);
1615 #endif /* USDT2 */
1616 jmethodID ret = get_method_id(env, clazz, name, sig, false, thread);
1617 #ifndef USDT2
1618 DTRACE_PROBE1(hotspot_jni, GetMethodID__return, ret);
1619 #else /* USDT2 */
1620 HOTSPOT_JNI_GETMETHODID_RETURN(
1621 (uintptr_t) ret);
1622 #endif /* USDT2 */
1623 return ret;
1624 JNI_END
1625
1626
1627 JNI_ENTRY(jmethodID, jni_GetStaticMethodID(JNIEnv *env, jclass clazz,
1628 const char *name, const char *sig))
1629 JNIWrapper("GetStaticMethodID");
1630 #ifndef USDT2
1631 DTRACE_PROBE4(hotspot_jni, GetStaticMethodID__entry, env, clazz, name, sig);
1632 #else /* USDT2 */
1633 HOTSPOT_JNI_GETSTATICMETHODID_ENTRY(
1634 env, (char *) clazz, (char *) name, (char *)sig);
1635 #endif /* USDT2 */
1636 jmethodID ret = get_method_id(env, clazz, name, sig, true, thread);
1637 #ifndef USDT2
1638 DTRACE_PROBE1(hotspot_jni, GetStaticMethodID__return, ret);
1639 #else /* USDT2 */
1640 HOTSPOT_JNI_GETSTATICMETHODID_RETURN(
1641 (uintptr_t) ret);
1642 #endif /* USDT2 */
1643 return ret;
1644 JNI_END
1645
1646
1647
1648 //
1649 // Calling Methods
1650 //
1651
1652 #ifndef USDT2
1653 #define DEFINE_CALLMETHOD(ResultType, Result, Tag) \
1654 \
1655 DT_RETURN_MARK_DECL_FOR(Result, Call##Result##Method, ResultType);\
1656 DT_RETURN_MARK_DECL_FOR(Result, Call##Result##MethodV, ResultType);\
1657 DT_RETURN_MARK_DECL_FOR(Result, Call##Result##MethodA, ResultType);\
1658 \
1659 JNI_ENTRY(ResultType, \
1660 jni_Call##Result##Method(JNIEnv *env, jobject obj, jmethodID methodID, ...)) \
1661 JNIWrapper("Call" XSTR(Result) "Method"); \
1662 \
1663 DTRACE_PROBE3(hotspot_jni, Call##Result##Method__entry, env, obj, methodID); \
1664 ResultType ret = 0;\
1665 DT_RETURN_MARK_FOR(Result, Call##Result##Method, ResultType, \
1666 (const ResultType&)ret);\
1667 \
1668 va_list args; \
1669 va_start(args, methodID); \
1670 JavaValue jvalue(Tag); \
1671 JNI_ArgumentPusherVaArg ap(methodID, args); \
1672 jni_invoke_nonstatic(env, &jvalue, obj, JNI_VIRTUAL, methodID, &ap, CHECK_0); \
1673 va_end(args); \
1674 ret = jvalue.get_##ResultType(); \
1675 return ret;\
1676 JNI_END \
1677 \
1678 \
1679 JNI_ENTRY(ResultType, \
1680 jni_Call##Result##MethodV(JNIEnv *env, jobject obj, jmethodID methodID, va_list args)) \
1681 JNIWrapper("Call" XSTR(Result) "MethodV"); \
1682 \
1683 DTRACE_PROBE3(hotspot_jni, Call##Result##MethodV__entry, env, obj, methodID); \
1684 ResultType ret = 0;\
1685 DT_RETURN_MARK_FOR(Result, Call##Result##MethodV, ResultType, \
1686 (const ResultType&)ret);\
1687 \
1688 JavaValue jvalue(Tag); \
1689 JNI_ArgumentPusherVaArg ap(methodID, args); \
1690 jni_invoke_nonstatic(env, &jvalue, obj, JNI_VIRTUAL, methodID, &ap, CHECK_0); \
1691 ret = jvalue.get_##ResultType(); \
1692 return ret;\
1693 JNI_END \
1694 \
1695 \
1696 JNI_ENTRY(ResultType, \
1697 jni_Call##Result##MethodA(JNIEnv *env, jobject obj, jmethodID methodID, const jvalue *args)) \
1698 JNIWrapper("Call" XSTR(Result) "MethodA"); \
1699 DTRACE_PROBE3(hotspot_jni, Call##Result##MethodA__entry, env, obj, methodID); \
1700 ResultType ret = 0;\
1701 DT_RETURN_MARK_FOR(Result, Call##Result##MethodA, ResultType, \
1702 (const ResultType&)ret);\
1703 \
1704 JavaValue jvalue(Tag); \
1705 JNI_ArgumentPusherArray ap(methodID, args); \
1706 jni_invoke_nonstatic(env, &jvalue, obj, JNI_VIRTUAL, methodID, &ap, CHECK_0); \
1707 ret = jvalue.get_##ResultType(); \
1708 return ret;\
1709 JNI_END
1710
1711 // the runtime type of subword integral basic types is integer
1712 DEFINE_CALLMETHOD(jboolean, Boolean, T_BOOLEAN)
1713 DEFINE_CALLMETHOD(jbyte, Byte, T_BYTE)
1714 DEFINE_CALLMETHOD(jchar, Char, T_CHAR)
1715 DEFINE_CALLMETHOD(jshort, Short, T_SHORT)
1716
1717 DEFINE_CALLMETHOD(jobject, Object, T_OBJECT)
1718 DEFINE_CALLMETHOD(jint, Int, T_INT)
1719 DEFINE_CALLMETHOD(jlong, Long, T_LONG)
1720 DEFINE_CALLMETHOD(jfloat, Float, T_FLOAT)
1721 DEFINE_CALLMETHOD(jdouble, Double, T_DOUBLE)
1722
1723 DT_VOID_RETURN_MARK_DECL(CallVoidMethod);
1724 DT_VOID_RETURN_MARK_DECL(CallVoidMethodV);
1725 DT_VOID_RETURN_MARK_DECL(CallVoidMethodA);
1726
1727 #else /* USDT2 */
1728
1729 #define DEFINE_CALLMETHOD(ResultType, Result, Tag \
1730 , EntryProbe, ReturnProbe) \
1731 \
1732 DT_RETURN_MARK_DECL_FOR(Result, Call##Result##Method, ResultType \
1733 , ReturnProbe); \
1734 \
1735 JNI_ENTRY(ResultType, \
1736 jni_Call##Result##Method(JNIEnv *env, jobject obj, jmethodID methodID, ...)) \
1737 JNIWrapper("Call" XSTR(Result) "Method"); \
1738 \
1739 EntryProbe; \
1740 ResultType ret = 0;\
1741 DT_RETURN_MARK_FOR(Result, Call##Result##Method, ResultType, \
1742 (const ResultType&)ret);\
1743 \
1744 va_list args; \
1745 va_start(args, methodID); \
1746 JavaValue jvalue(Tag); \
1747 JNI_ArgumentPusherVaArg ap(methodID, args); \
1748 jni_invoke_nonstatic(env, &jvalue, obj, JNI_VIRTUAL, methodID, &ap, CHECK_0); \
1749 va_end(args); \
1750 ret = jvalue.get_##ResultType(); \
1751 return ret;\
1752 JNI_END
1753
1754 // the runtime type of subword integral basic types is integer
1755 DEFINE_CALLMETHOD(jboolean, Boolean, T_BOOLEAN
1756 , HOTSPOT_JNI_CALLBOOLEANMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1757 HOTSPOT_JNI_CALLBOOLEANMETHOD_RETURN(_ret_ref))
1758 DEFINE_CALLMETHOD(jbyte, Byte, T_BYTE
1759 , HOTSPOT_JNI_CALLBYTEMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1760 HOTSPOT_JNI_CALLBYTEMETHOD_RETURN(_ret_ref))
1761 DEFINE_CALLMETHOD(jchar, Char, T_CHAR
1762 , HOTSPOT_JNI_CALLCHARMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1763 HOTSPOT_JNI_CALLCHARMETHOD_RETURN(_ret_ref))
1764 DEFINE_CALLMETHOD(jshort, Short, T_SHORT
1765 , HOTSPOT_JNI_CALLSHORTMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1766 HOTSPOT_JNI_CALLSHORTMETHOD_RETURN(_ret_ref))
1767
1768 DEFINE_CALLMETHOD(jobject, Object, T_OBJECT
1769 , HOTSPOT_JNI_CALLOBJECTMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1770 HOTSPOT_JNI_CALLOBJECTMETHOD_RETURN(_ret_ref))
1771 DEFINE_CALLMETHOD(jint, Int, T_INT,
1772 HOTSPOT_JNI_CALLINTMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1773 HOTSPOT_JNI_CALLINTMETHOD_RETURN(_ret_ref))
1774 DEFINE_CALLMETHOD(jlong, Long, T_LONG
1775 , HOTSPOT_JNI_CALLLONGMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1776 HOTSPOT_JNI_CALLLONGMETHOD_RETURN(_ret_ref))
1777 // Float and double probes don't return value because dtrace doesn't currently support it
1778 DEFINE_CALLMETHOD(jfloat, Float, T_FLOAT
1779 , HOTSPOT_JNI_CALLFLOATMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1780 HOTSPOT_JNI_CALLFLOATMETHOD_RETURN())
1781 DEFINE_CALLMETHOD(jdouble, Double, T_DOUBLE
1782 , HOTSPOT_JNI_CALLDOUBLEMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1783 HOTSPOT_JNI_CALLDOUBLEMETHOD_RETURN())
1784
1785 #define DEFINE_CALLMETHODV(ResultType, Result, Tag \
1786 , EntryProbe, ReturnProbe) \
1787 \
1788 DT_RETURN_MARK_DECL_FOR(Result, Call##Result##MethodV, ResultType \
1789 , ReturnProbe); \
1790 \
1791 JNI_ENTRY(ResultType, \
1792 jni_Call##Result##MethodV(JNIEnv *env, jobject obj, jmethodID methodID, va_list args)) \
1793 JNIWrapper("Call" XSTR(Result) "MethodV"); \
1794 \
1795 EntryProbe;\
1796 ResultType ret = 0;\
1797 DT_RETURN_MARK_FOR(Result, Call##Result##MethodV, ResultType, \
1798 (const ResultType&)ret);\
1799 \
1800 JavaValue jvalue(Tag); \
1801 JNI_ArgumentPusherVaArg ap(methodID, args); \
1802 jni_invoke_nonstatic(env, &jvalue, obj, JNI_VIRTUAL, methodID, &ap, CHECK_0); \
1803 ret = jvalue.get_##ResultType(); \
1804 return ret;\
1805 JNI_END
1806
1807 // the runtime type of subword integral basic types is integer
1808 DEFINE_CALLMETHODV(jboolean, Boolean, T_BOOLEAN
1809 , HOTSPOT_JNI_CALLBOOLEANMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1810 HOTSPOT_JNI_CALLBOOLEANMETHOD_RETURN(_ret_ref))
1811 DEFINE_CALLMETHODV(jbyte, Byte, T_BYTE
1812 , HOTSPOT_JNI_CALLBYTEMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1813 HOTSPOT_JNI_CALLBYTEMETHOD_RETURN(_ret_ref))
1814 DEFINE_CALLMETHODV(jchar, Char, T_CHAR
1815 , HOTSPOT_JNI_CALLCHARMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1816 HOTSPOT_JNI_CALLCHARMETHOD_RETURN(_ret_ref))
1817 DEFINE_CALLMETHODV(jshort, Short, T_SHORT
1818 , HOTSPOT_JNI_CALLSHORTMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1819 HOTSPOT_JNI_CALLSHORTMETHOD_RETURN(_ret_ref))
1820
1821 DEFINE_CALLMETHODV(jobject, Object, T_OBJECT
1822 , HOTSPOT_JNI_CALLOBJECTMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1823 HOTSPOT_JNI_CALLOBJECTMETHOD_RETURN(_ret_ref))
1824 DEFINE_CALLMETHODV(jint, Int, T_INT,
1825 HOTSPOT_JNI_CALLINTMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1826 HOTSPOT_JNI_CALLINTMETHOD_RETURN(_ret_ref))
1827 DEFINE_CALLMETHODV(jlong, Long, T_LONG
1828 , HOTSPOT_JNI_CALLLONGMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1829 HOTSPOT_JNI_CALLLONGMETHOD_RETURN(_ret_ref))
1830 // Float and double probes don't return value because dtrace doesn't currently support it
1831 DEFINE_CALLMETHODV(jfloat, Float, T_FLOAT
1832 , HOTSPOT_JNI_CALLFLOATMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1833 HOTSPOT_JNI_CALLFLOATMETHOD_RETURN())
1834 DEFINE_CALLMETHODV(jdouble, Double, T_DOUBLE
1835 , HOTSPOT_JNI_CALLDOUBLEMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1836 HOTSPOT_JNI_CALLDOUBLEMETHOD_RETURN())
1837
1838 #define DEFINE_CALLMETHODA(ResultType, Result, Tag \
1839 , EntryProbe, ReturnProbe) \
1840 \
1841 DT_RETURN_MARK_DECL_FOR(Result, Call##Result##MethodA, ResultType \
1842 , ReturnProbe); \
1843 \
1844 JNI_ENTRY(ResultType, \
1845 jni_Call##Result##MethodA(JNIEnv *env, jobject obj, jmethodID methodID, const jvalue *args)) \
1846 JNIWrapper("Call" XSTR(Result) "MethodA"); \
1847 EntryProbe; \
1848 ResultType ret = 0;\
1849 DT_RETURN_MARK_FOR(Result, Call##Result##MethodA, ResultType, \
1850 (const ResultType&)ret);\
1851 \
1852 JavaValue jvalue(Tag); \
1853 JNI_ArgumentPusherArray ap(methodID, args); \
1854 jni_invoke_nonstatic(env, &jvalue, obj, JNI_VIRTUAL, methodID, &ap, CHECK_0); \
1855 ret = jvalue.get_##ResultType(); \
1856 return ret;\
1857 JNI_END
1858
1859 // the runtime type of subword integral basic types is integer
1860 DEFINE_CALLMETHODA(jboolean, Boolean, T_BOOLEAN
1861 , HOTSPOT_JNI_CALLBOOLEANMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1862 HOTSPOT_JNI_CALLBOOLEANMETHOD_RETURN(_ret_ref))
1863 DEFINE_CALLMETHODA(jbyte, Byte, T_BYTE
1864 , HOTSPOT_JNI_CALLBYTEMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1865 HOTSPOT_JNI_CALLBYTEMETHOD_RETURN(_ret_ref))
1866 DEFINE_CALLMETHODA(jchar, Char, T_CHAR
1867 , HOTSPOT_JNI_CALLCHARMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1868 HOTSPOT_JNI_CALLCHARMETHOD_RETURN(_ret_ref))
1869 DEFINE_CALLMETHODA(jshort, Short, T_SHORT
1870 , HOTSPOT_JNI_CALLSHORTMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1871 HOTSPOT_JNI_CALLSHORTMETHOD_RETURN(_ret_ref))
1872
1873 DEFINE_CALLMETHODA(jobject, Object, T_OBJECT
1874 , HOTSPOT_JNI_CALLOBJECTMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1875 HOTSPOT_JNI_CALLOBJECTMETHOD_RETURN(_ret_ref))
1876 DEFINE_CALLMETHODA(jint, Int, T_INT,
1877 HOTSPOT_JNI_CALLINTMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1878 HOTSPOT_JNI_CALLINTMETHOD_RETURN(_ret_ref))
1879 DEFINE_CALLMETHODA(jlong, Long, T_LONG
1880 , HOTSPOT_JNI_CALLLONGMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1881 HOTSPOT_JNI_CALLLONGMETHOD_RETURN(_ret_ref))
1882 // Float and double probes don't return value because dtrace doesn't currently support it
1883 DEFINE_CALLMETHODA(jfloat, Float, T_FLOAT
1884 , HOTSPOT_JNI_CALLFLOATMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1885 HOTSPOT_JNI_CALLFLOATMETHOD_RETURN())
1886 DEFINE_CALLMETHODA(jdouble, Double, T_DOUBLE
1887 , HOTSPOT_JNI_CALLDOUBLEMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1888 HOTSPOT_JNI_CALLDOUBLEMETHOD_RETURN())
1889
1890 DT_VOID_RETURN_MARK_DECL(CallVoidMethod, HOTSPOT_JNI_CALLVOIDMETHOD_RETURN());
1891 DT_VOID_RETURN_MARK_DECL(CallVoidMethodV, HOTSPOT_JNI_CALLVOIDMETHODV_RETURN());
1892 DT_VOID_RETURN_MARK_DECL(CallVoidMethodA, HOTSPOT_JNI_CALLVOIDMETHODA_RETURN());
1893
1894 #endif /* USDT2 */
1895
1896 JNI_ENTRY(void, jni_CallVoidMethod(JNIEnv *env, jobject obj, jmethodID methodID, ...))
1897 JNIWrapper("CallVoidMethod");
1898 #ifndef USDT2
1899 DTRACE_PROBE3(hotspot_jni, CallVoidMethod__entry, env, obj, methodID);
1900 #else /* USDT2 */
1901 HOTSPOT_JNI_CALLVOIDMETHOD_ENTRY(
1902 env, obj, (uintptr_t) methodID);
1903 #endif /* USDT2 */
1904 DT_VOID_RETURN_MARK(CallVoidMethod);
1905
1906 va_list args;
1907 va_start(args, methodID);
1908 JavaValue jvalue(T_VOID);
1909 JNI_ArgumentPusherVaArg ap(methodID, args);
1910 jni_invoke_nonstatic(env, &jvalue, obj, JNI_VIRTUAL, methodID, &ap, CHECK);
1911 va_end(args);
1912 JNI_END
1913
1914
1915 JNI_ENTRY(void, jni_CallVoidMethodV(JNIEnv *env, jobject obj, jmethodID methodID, va_list args))
1916 JNIWrapper("CallVoidMethodV");
1917 #ifndef USDT2
1918 DTRACE_PROBE3(hotspot_jni, CallVoidMethodV__entry, env, obj, methodID);
1919 #else /* USDT2 */
1920 HOTSPOT_JNI_CALLVOIDMETHODV_ENTRY(
1921 env, obj, (uintptr_t) methodID);
1922 #endif /* USDT2 */
1923 DT_VOID_RETURN_MARK(CallVoidMethodV);
1924
1925 JavaValue jvalue(T_VOID);
1926 JNI_ArgumentPusherVaArg ap(methodID, args);
1927 jni_invoke_nonstatic(env, &jvalue, obj, JNI_VIRTUAL, methodID, &ap, CHECK);
1928 JNI_END
1929
1930
1931 JNI_ENTRY(void, jni_CallVoidMethodA(JNIEnv *env, jobject obj, jmethodID methodID, const jvalue *args))
1932 JNIWrapper("CallVoidMethodA");
1933 #ifndef USDT2
1934 DTRACE_PROBE3(hotspot_jni, CallVoidMethodA__entry, env, obj, methodID);
1935 #else /* USDT2 */
1936 HOTSPOT_JNI_CALLVOIDMETHODA_ENTRY(
1937 env, obj, (uintptr_t) methodID);
1938 #endif /* USDT2 */
1939 DT_VOID_RETURN_MARK(CallVoidMethodA);
1940
1941 JavaValue jvalue(T_VOID);
1942 JNI_ArgumentPusherArray ap(methodID, args);
1943 jni_invoke_nonstatic(env, &jvalue, obj, JNI_VIRTUAL, methodID, &ap, CHECK);
1944 JNI_END
1945
1946
1947 #ifndef USDT2
1948 #define DEFINE_CALLNONVIRTUALMETHOD(ResultType, Result, Tag) \
1949 \
1950 DT_RETURN_MARK_DECL_FOR(Result, CallNonvirtual##Result##Method, ResultType);\
1951 DT_RETURN_MARK_DECL_FOR(Result, CallNonvirtual##Result##MethodV, ResultType);\
1952 DT_RETURN_MARK_DECL_FOR(Result, CallNonvirtual##Result##MethodA, ResultType);\
1953 \
1954 JNI_ENTRY(ResultType, \
1955 jni_CallNonvirtual##Result##Method(JNIEnv *env, jobject obj, jclass cls, jmethodID methodID, ...)) \
1956 JNIWrapper("CallNonvitual" XSTR(Result) "Method"); \
1957 \
1958 DTRACE_PROBE4(hotspot_jni, CallNonvirtual##Result##Method__entry, env, obj, cls, methodID);\
1959 ResultType ret;\
1960 DT_RETURN_MARK_FOR(Result, CallNonvirtual##Result##Method, ResultType, \
1961 (const ResultType&)ret);\
1962 \
1963 va_list args; \
1964 va_start(args, methodID); \
1965 JavaValue jvalue(Tag); \
1966 JNI_ArgumentPusherVaArg ap(methodID, args); \
1967 jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK_0); \
1968 va_end(args); \
1969 ret = jvalue.get_##ResultType(); \
1970 return ret;\
1971 JNI_END \
1972 \
1973 JNI_ENTRY(ResultType, \
1974 jni_CallNonvirtual##Result##MethodV(JNIEnv *env, jobject obj, jclass cls, jmethodID methodID, va_list args)) \
1975 JNIWrapper("CallNonvitual" XSTR(Result) "#MethodV"); \
1976 DTRACE_PROBE4(hotspot_jni, CallNonvirtual##Result##MethodV__entry, env, obj, cls, methodID);\
1977 ResultType ret;\
1978 DT_RETURN_MARK_FOR(Result, CallNonvirtual##Result##MethodV, ResultType, \
1979 (const ResultType&)ret);\
1980 \
1981 JavaValue jvalue(Tag); \
1982 JNI_ArgumentPusherVaArg ap(methodID, args); \
1983 jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK_0); \
1984 ret = jvalue.get_##ResultType(); \
1985 return ret;\
1986 JNI_END \
1987 \
1988 JNI_ENTRY(ResultType, \
1989 jni_CallNonvirtual##Result##MethodA(JNIEnv *env, jobject obj, jclass cls, jmethodID methodID, const jvalue *args)) \
1990 JNIWrapper("CallNonvitual" XSTR(Result) "MethodA"); \
1991 DTRACE_PROBE4(hotspot_jni, CallNonvirtual##Result##MethodA__entry, env, obj, cls, methodID);\
1992 ResultType ret;\
1993 DT_RETURN_MARK_FOR(Result, CallNonvirtual##Result##MethodA, ResultType, \
1994 (const ResultType&)ret);\
1995 \
1996 JavaValue jvalue(Tag); \
1997 JNI_ArgumentPusherArray ap(methodID, args); \
1998 jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK_0); \
1999 ret = jvalue.get_##ResultType(); \
2000 return ret;\
2001 JNI_END
2002
2003 // the runtime type of subword integral basic types is integer
2004 DEFINE_CALLNONVIRTUALMETHOD(jboolean, Boolean, T_BOOLEAN)
2005 DEFINE_CALLNONVIRTUALMETHOD(jbyte, Byte, T_BYTE)
2006 DEFINE_CALLNONVIRTUALMETHOD(jchar, Char, T_CHAR)
2007 DEFINE_CALLNONVIRTUALMETHOD(jshort, Short, T_SHORT)
2008
2009 DEFINE_CALLNONVIRTUALMETHOD(jobject, Object, T_OBJECT)
2010 DEFINE_CALLNONVIRTUALMETHOD(jint, Int, T_INT)
2011 DEFINE_CALLNONVIRTUALMETHOD(jlong, Long, T_LONG)
2012 DEFINE_CALLNONVIRTUALMETHOD(jfloat, Float, T_FLOAT)
2013 DEFINE_CALLNONVIRTUALMETHOD(jdouble, Double, T_DOUBLE)
2014
2015
2016 DT_VOID_RETURN_MARK_DECL(CallNonvirtualVoidMethod);
2017 DT_VOID_RETURN_MARK_DECL(CallNonvirtualVoidMethodV);
2018 DT_VOID_RETURN_MARK_DECL(CallNonvirtualVoidMethodA);
2019
2020 #else /* USDT2 */
2021
2022 #define DEFINE_CALLNONVIRTUALMETHOD(ResultType, Result, Tag \
2023 , EntryProbe, ReturnProbe) \
2024 \
2025 DT_RETURN_MARK_DECL_FOR(Result, CallNonvirtual##Result##Method, ResultType \
2026 , ReturnProbe);\
2027 \
2028 JNI_ENTRY(ResultType, \
2029 jni_CallNonvirtual##Result##Method(JNIEnv *env, jobject obj, jclass cls, jmethodID methodID, ...)) \
2030 JNIWrapper("CallNonvitual" XSTR(Result) "Method"); \
2031 \
2032 EntryProbe;\
2033 ResultType ret;\
2034 DT_RETURN_MARK_FOR(Result, CallNonvirtual##Result##Method, ResultType, \
2035 (const ResultType&)ret);\
2036 \
2037 va_list args; \
2038 va_start(args, methodID); \
2039 JavaValue jvalue(Tag); \
2040 JNI_ArgumentPusherVaArg ap(methodID, args); \
2041 jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK_0); \
2042 va_end(args); \
2043 ret = jvalue.get_##ResultType(); \
2044 return ret;\
2045 JNI_END
2046
2047 // the runtime type of subword integral basic types is integer
2048 DEFINE_CALLNONVIRTUALMETHOD(jboolean, Boolean, T_BOOLEAN
2049 , HOTSPOT_JNI_CALLNONVIRTUALBOOLEANMETHOD_ENTRY(env, obj, cls, (uintptr_t)methodID),
2050 HOTSPOT_JNI_CALLNONVIRTUALBOOLEANMETHOD_RETURN(_ret_ref))
2051 DEFINE_CALLNONVIRTUALMETHOD(jbyte, Byte, T_BYTE
2052 , HOTSPOT_JNI_CALLNONVIRTUALBYTEMETHOD_ENTRY(env, obj, cls, (uintptr_t)methodID),
2053 HOTSPOT_JNI_CALLNONVIRTUALBYTEMETHOD_RETURN(_ret_ref))
2054 DEFINE_CALLNONVIRTUALMETHOD(jchar, Char, T_CHAR
2055 , HOTSPOT_JNI_CALLNONVIRTUALCHARMETHOD_ENTRY(env, obj, cls, (uintptr_t)methodID),
2056 HOTSPOT_JNI_CALLNONVIRTUALCHARMETHOD_RETURN(_ret_ref))
2057 DEFINE_CALLNONVIRTUALMETHOD(jshort, Short, T_SHORT
2058 , HOTSPOT_JNI_CALLNONVIRTUALSHORTMETHOD_ENTRY(env, obj, cls, (uintptr_t)methodID),
2059 HOTSPOT_JNI_CALLNONVIRTUALSHORTMETHOD_RETURN(_ret_ref))
2060
2061 DEFINE_CALLNONVIRTUALMETHOD(jobject, Object, T_OBJECT
2062 , HOTSPOT_JNI_CALLNONVIRTUALOBJECTMETHOD_ENTRY(env, obj, cls, (uintptr_t)methodID),
2063 HOTSPOT_JNI_CALLNONVIRTUALOBJECTMETHOD_RETURN(_ret_ref))
2064 DEFINE_CALLNONVIRTUALMETHOD(jint, Int, T_INT
2065 , HOTSPOT_JNI_CALLNONVIRTUALINTMETHOD_ENTRY(env, obj, cls, (uintptr_t)methodID),
2066 HOTSPOT_JNI_CALLNONVIRTUALINTMETHOD_RETURN(_ret_ref))
2067 DEFINE_CALLNONVIRTUALMETHOD(jlong, Long, T_LONG
2068 , HOTSPOT_JNI_CALLNONVIRTUALLONGMETHOD_ENTRY(env, obj, cls, (uintptr_t)methodID),
2069 // Float and double probes don't return value because dtrace doesn't currently support it
2070 HOTSPOT_JNI_CALLNONVIRTUALLONGMETHOD_RETURN(_ret_ref))
2071 DEFINE_CALLNONVIRTUALMETHOD(jfloat, Float, T_FLOAT
2072 , HOTSPOT_JNI_CALLNONVIRTUALFLOATMETHOD_ENTRY(env, obj, cls, (uintptr_t)methodID),
2073 HOTSPOT_JNI_CALLNONVIRTUALFLOATMETHOD_RETURN())
2074 DEFINE_CALLNONVIRTUALMETHOD(jdouble, Double, T_DOUBLE
2075 , HOTSPOT_JNI_CALLNONVIRTUALDOUBLEMETHOD_ENTRY(env, obj, cls, (uintptr_t)methodID),
2076 HOTSPOT_JNI_CALLNONVIRTUALDOUBLEMETHOD_RETURN())
2077
2078 #define DEFINE_CALLNONVIRTUALMETHODV(ResultType, Result, Tag \
2079 , EntryProbe, ReturnProbe) \
2080 \
2081 DT_RETURN_MARK_DECL_FOR(Result, CallNonvirtual##Result##MethodV, ResultType \
2082 , ReturnProbe);\
2083 \
2084 JNI_ENTRY(ResultType, \
2085 jni_CallNonvirtual##Result##MethodV(JNIEnv *env, jobject obj, jclass cls, jmethodID methodID, va_list args)) \
2086 JNIWrapper("CallNonvitual" XSTR(Result) "MethodV"); \
2087 \
2088 EntryProbe;\
2089 ResultType ret;\
2090 DT_RETURN_MARK_FOR(Result, CallNonvirtual##Result##MethodV, ResultType, \
2091 (const ResultType&)ret);\
2092 \
2093 JavaValue jvalue(Tag); \
2094 JNI_ArgumentPusherVaArg ap(methodID, args); \
2095 jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK_0); \
2096 ret = jvalue.get_##ResultType(); \
2097 return ret;\
2098 JNI_END
2099
2100 // the runtime type of subword integral basic types is integer
2101 DEFINE_CALLNONVIRTUALMETHODV(jboolean, Boolean, T_BOOLEAN
2102 , HOTSPOT_JNI_CALLNONVIRTUALBOOLEANMETHODV_ENTRY(env, obj, cls, (uintptr_t)methodID),
2103 HOTSPOT_JNI_CALLNONVIRTUALBOOLEANMETHODV_RETURN(_ret_ref))
2104 DEFINE_CALLNONVIRTUALMETHODV(jbyte, Byte, T_BYTE
2105 , HOTSPOT_JNI_CALLNONVIRTUALBYTEMETHODV_ENTRY(env, obj, cls, (uintptr_t)methodID),
2106 HOTSPOT_JNI_CALLNONVIRTUALBYTEMETHODV_RETURN(_ret_ref))
2107 DEFINE_CALLNONVIRTUALMETHODV(jchar, Char, T_CHAR
2108 , HOTSPOT_JNI_CALLNONVIRTUALCHARMETHODV_ENTRY(env, obj, cls, (uintptr_t)methodID),
2109 HOTSPOT_JNI_CALLNONVIRTUALCHARMETHODV_RETURN(_ret_ref))
2110 DEFINE_CALLNONVIRTUALMETHODV(jshort, Short, T_SHORT
2111 , HOTSPOT_JNI_CALLNONVIRTUALSHORTMETHODV_ENTRY(env, obj, cls, (uintptr_t)methodID),
2112 HOTSPOT_JNI_CALLNONVIRTUALSHORTMETHODV_RETURN(_ret_ref))
2113
2114 DEFINE_CALLNONVIRTUALMETHODV(jobject, Object, T_OBJECT
2115 , HOTSPOT_JNI_CALLNONVIRTUALOBJECTMETHODV_ENTRY(env, obj, cls, (uintptr_t)methodID),
2116 HOTSPOT_JNI_CALLNONVIRTUALOBJECTMETHODV_RETURN(_ret_ref))
2117 DEFINE_CALLNONVIRTUALMETHODV(jint, Int, T_INT
2118 , HOTSPOT_JNI_CALLNONVIRTUALINTMETHODV_ENTRY(env, obj, cls, (uintptr_t)methodID),
2119 HOTSPOT_JNI_CALLNONVIRTUALINTMETHODV_RETURN(_ret_ref))
2120 DEFINE_CALLNONVIRTUALMETHODV(jlong, Long, T_LONG
2121 , HOTSPOT_JNI_CALLNONVIRTUALLONGMETHODV_ENTRY(env, obj, cls, (uintptr_t)methodID),
2122 // Float and double probes don't return value because dtrace doesn't currently support it
2123 HOTSPOT_JNI_CALLNONVIRTUALLONGMETHODV_RETURN(_ret_ref))
2124 DEFINE_CALLNONVIRTUALMETHODV(jfloat, Float, T_FLOAT
2125 , HOTSPOT_JNI_CALLNONVIRTUALFLOATMETHODV_ENTRY(env, obj, cls, (uintptr_t)methodID),
2126 HOTSPOT_JNI_CALLNONVIRTUALFLOATMETHODV_RETURN())
2127 DEFINE_CALLNONVIRTUALMETHODV(jdouble, Double, T_DOUBLE
2128 , HOTSPOT_JNI_CALLNONVIRTUALDOUBLEMETHODV_ENTRY(env, obj, cls, (uintptr_t)methodID),
2129 HOTSPOT_JNI_CALLNONVIRTUALDOUBLEMETHODV_RETURN())
2130
2131 #define DEFINE_CALLNONVIRTUALMETHODA(ResultType, Result, Tag \
2132 , EntryProbe, ReturnProbe) \
2133 \
2134 DT_RETURN_MARK_DECL_FOR(Result, CallNonvirtual##Result##MethodA, ResultType \
2135 , ReturnProbe);\
2136 \
2137 JNI_ENTRY(ResultType, \
2138 jni_CallNonvirtual##Result##MethodA(JNIEnv *env, jobject obj, jclass cls, jmethodID methodID, const jvalue *args)) \
2139 JNIWrapper("CallNonvitual" XSTR(Result) "MethodA"); \
2140 \
2141 EntryProbe;\
2142 ResultType ret;\
2143 DT_RETURN_MARK_FOR(Result, CallNonvirtual##Result##MethodA, ResultType, \
2144 (const ResultType&)ret);\
2145 \
2146 JavaValue jvalue(Tag); \
2147 JNI_ArgumentPusherArray ap(methodID, args); \
2148 jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK_0); \
2149 ret = jvalue.get_##ResultType(); \
2150 return ret;\
2151 JNI_END
2152
2153 // the runtime type of subword integral basic types is integer
2154 DEFINE_CALLNONVIRTUALMETHODA(jboolean, Boolean, T_BOOLEAN
2155 , HOTSPOT_JNI_CALLNONVIRTUALBOOLEANMETHODA_ENTRY(env, obj, cls, (uintptr_t)methodID),
2156 HOTSPOT_JNI_CALLNONVIRTUALBOOLEANMETHODA_RETURN(_ret_ref))
2157 DEFINE_CALLNONVIRTUALMETHODA(jbyte, Byte, T_BYTE
2158 , HOTSPOT_JNI_CALLNONVIRTUALBYTEMETHODA_ENTRY(env, obj, cls, (uintptr_t)methodID),
2159 HOTSPOT_JNI_CALLNONVIRTUALBYTEMETHODA_RETURN(_ret_ref))
2160 DEFINE_CALLNONVIRTUALMETHODA(jchar, Char, T_CHAR
2161 , HOTSPOT_JNI_CALLNONVIRTUALCHARMETHODA_ENTRY(env, obj, cls, (uintptr_t)methodID),
2162 HOTSPOT_JNI_CALLNONVIRTUALCHARMETHODA_RETURN(_ret_ref))
2163 DEFINE_CALLNONVIRTUALMETHODA(jshort, Short, T_SHORT
2164 , HOTSPOT_JNI_CALLNONVIRTUALSHORTMETHODA_ENTRY(env, obj, cls, (uintptr_t)methodID),
2165 HOTSPOT_JNI_CALLNONVIRTUALSHORTMETHODA_RETURN(_ret_ref))
2166
2167 DEFINE_CALLNONVIRTUALMETHODA(jobject, Object, T_OBJECT
2168 , HOTSPOT_JNI_CALLNONVIRTUALOBJECTMETHODA_ENTRY(env, obj, cls, (uintptr_t)methodID),
2169 HOTSPOT_JNI_CALLNONVIRTUALOBJECTMETHODA_RETURN(_ret_ref))
2170 DEFINE_CALLNONVIRTUALMETHODA(jint, Int, T_INT
2171 , HOTSPOT_JNI_CALLNONVIRTUALINTMETHODA_ENTRY(env, obj, cls, (uintptr_t)methodID),
2172 HOTSPOT_JNI_CALLNONVIRTUALINTMETHODA_RETURN(_ret_ref))
2173 DEFINE_CALLNONVIRTUALMETHODA(jlong, Long, T_LONG
2174 , HOTSPOT_JNI_CALLNONVIRTUALLONGMETHODA_ENTRY(env, obj, cls, (uintptr_t)methodID),
2175 // Float and double probes don't return value because dtrace doesn't currently support it
2176 HOTSPOT_JNI_CALLNONVIRTUALLONGMETHODA_RETURN(_ret_ref))
2177 DEFINE_CALLNONVIRTUALMETHODA(jfloat, Float, T_FLOAT
2178 , HOTSPOT_JNI_CALLNONVIRTUALFLOATMETHODA_ENTRY(env, obj, cls, (uintptr_t)methodID),
2179 HOTSPOT_JNI_CALLNONVIRTUALFLOATMETHODA_RETURN())
2180 DEFINE_CALLNONVIRTUALMETHODA(jdouble, Double, T_DOUBLE
2181 , HOTSPOT_JNI_CALLNONVIRTUALDOUBLEMETHODA_ENTRY(env, obj, cls, (uintptr_t)methodID),
2182 HOTSPOT_JNI_CALLNONVIRTUALDOUBLEMETHODA_RETURN())
2183
2184 DT_VOID_RETURN_MARK_DECL(CallNonvirtualVoidMethod
2185 , HOTSPOT_JNI_CALLNONVIRTUALVOIDMETHOD_RETURN());
2186 DT_VOID_RETURN_MARK_DECL(CallNonvirtualVoidMethodV
2187 , HOTSPOT_JNI_CALLNONVIRTUALVOIDMETHODV_RETURN());
2188 DT_VOID_RETURN_MARK_DECL(CallNonvirtualVoidMethodA
2189 , HOTSPOT_JNI_CALLNONVIRTUALVOIDMETHODA_RETURN());
2190 #endif /* USDT2 */
2191
2192 JNI_ENTRY(void, jni_CallNonvirtualVoidMethod(JNIEnv *env, jobject obj, jclass cls, jmethodID methodID, ...))
2193 JNIWrapper("CallNonvirtualVoidMethod");
2194
2195 #ifndef USDT2
2196 DTRACE_PROBE4(hotspot_jni, CallNonvirtualVoidMethod__entry,
2197 env, obj, cls, methodID);
2198 #else /* USDT2 */
2199 HOTSPOT_JNI_CALLNONVIRTUALVOIDMETHOD_ENTRY(
2200 env, obj, cls, (uintptr_t) methodID);
2201 #endif /* USDT2 */
2202 DT_VOID_RETURN_MARK(CallNonvirtualVoidMethod);
2203
2204 va_list args;
2205 va_start(args, methodID);
2206 JavaValue jvalue(T_VOID);
2207 JNI_ArgumentPusherVaArg ap(methodID, args);
2208 jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK);
2209 va_end(args);
2210 JNI_END
2211
2212
2213 JNI_ENTRY(void, jni_CallNonvirtualVoidMethodV(JNIEnv *env, jobject obj, jclass cls, jmethodID methodID, va_list args))
2214 JNIWrapper("CallNonvirtualVoidMethodV");
2215
2216 #ifndef USDT2
2217 DTRACE_PROBE4(hotspot_jni, CallNonvirtualVoidMethodV__entry,
2218 env, obj, cls, methodID);
2219 #else /* USDT2 */
2220 HOTSPOT_JNI_CALLNONVIRTUALVOIDMETHODV_ENTRY(
2221 env, obj, cls, (uintptr_t) methodID);
2222 #endif /* USDT2 */
2223 DT_VOID_RETURN_MARK(CallNonvirtualVoidMethodV);
2224
2225 JavaValue jvalue(T_VOID);
2226 JNI_ArgumentPusherVaArg ap(methodID, args);
2227 jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK);
2228 JNI_END
2229
2230
2231 JNI_ENTRY(void, jni_CallNonvirtualVoidMethodA(JNIEnv *env, jobject obj, jclass cls, jmethodID methodID, const jvalue *args))
2232 JNIWrapper("CallNonvirtualVoidMethodA");
2233 #ifndef USDT2
2234 DTRACE_PROBE4(hotspot_jni, CallNonvirtualVoidMethodA__entry,
2235 env, obj, cls, methodID);
2236 #else /* USDT2 */
2237 HOTSPOT_JNI_CALLNONVIRTUALVOIDMETHODA_ENTRY(
2238 env, obj, cls, (uintptr_t) methodID);
2239 #endif /* USDT2 */
2240 DT_VOID_RETURN_MARK(CallNonvirtualVoidMethodA);
2241 JavaValue jvalue(T_VOID);
2242 JNI_ArgumentPusherArray ap(methodID, args);
2243 jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK);
2244 JNI_END
2245
2246
2247 #ifndef USDT2
2248 #define DEFINE_CALLSTATICMETHOD(ResultType, Result, Tag) \
2249 \
2250 DT_RETURN_MARK_DECL_FOR(Result, CallStatic##Result##Method, ResultType);\
2251 DT_RETURN_MARK_DECL_FOR(Result, CallStatic##Result##MethodV, ResultType);\
2252 DT_RETURN_MARK_DECL_FOR(Result, CallStatic##Result##MethodA, ResultType);\
2253 \
2254 JNI_ENTRY(ResultType, \
2255 jni_CallStatic##Result##Method(JNIEnv *env, jclass cls, jmethodID methodID, ...)) \
2256 JNIWrapper("CallStatic" XSTR(Result) "Method"); \
2257 \
2258 DTRACE_PROBE3(hotspot_jni, CallStatic##Result##Method__entry, env, cls, methodID);\
2259 ResultType ret = 0;\
2260 DT_RETURN_MARK_FOR(Result, CallStatic##Result##Method, ResultType, \
2261 (const ResultType&)ret);\
2262 \
2263 va_list args; \
2264 va_start(args, methodID); \
2265 JavaValue jvalue(Tag); \
2266 JNI_ArgumentPusherVaArg ap(methodID, args); \
2267 jni_invoke_static(env, &jvalue, NULL, JNI_STATIC, methodID, &ap, CHECK_0); \
2268 va_end(args); \
2269 ret = jvalue.get_##ResultType(); \
2270 return ret;\
2271 JNI_END \
2272 \
2273 JNI_ENTRY(ResultType, \
2274 jni_CallStatic##Result##MethodV(JNIEnv *env, jclass cls, jmethodID methodID, va_list args)) \
2275 JNIWrapper("CallStatic" XSTR(Result) "MethodV"); \
2276 DTRACE_PROBE3(hotspot_jni, CallStatic##Result##MethodV__entry, env, cls, methodID);\
2277 ResultType ret = 0;\
2278 DT_RETURN_MARK_FOR(Result, CallStatic##Result##MethodV, ResultType, \
2279 (const ResultType&)ret);\
2280 \
2281 JavaValue jvalue(Tag); \
2282 JNI_ArgumentPusherVaArg ap(methodID, args); \
2283 jni_invoke_static(env, &jvalue, NULL, JNI_STATIC, methodID, &ap, CHECK_0); \
2284 ret = jvalue.get_##ResultType(); \
2285 return ret;\
2286 JNI_END \
2287 \
2288 JNI_ENTRY(ResultType, \
2289 jni_CallStatic##Result##MethodA(JNIEnv *env, jclass cls, jmethodID methodID, const jvalue *args)) \
2290 JNIWrapper("CallStatic" XSTR(Result) "MethodA"); \
2291 DTRACE_PROBE3(hotspot_jni, CallStatic##Result##MethodA__entry, env, cls, methodID);\
2292 ResultType ret = 0;\
2293 DT_RETURN_MARK_FOR(Result, CallStatic##Result##MethodA, ResultType, \
2294 (const ResultType&)ret);\
2295 \
2296 JavaValue jvalue(Tag); \
2297 JNI_ArgumentPusherArray ap(methodID, args); \
2298 jni_invoke_static(env, &jvalue, NULL, JNI_STATIC, methodID, &ap, CHECK_0); \
2299 ret = jvalue.get_##ResultType(); \
2300 return ret;\
2301 JNI_END
2302
2303 // the runtime type of subword integral basic types is integer
2304 DEFINE_CALLSTATICMETHOD(jboolean, Boolean, T_BOOLEAN)
2305 DEFINE_CALLSTATICMETHOD(jbyte, Byte, T_BYTE)
2306 DEFINE_CALLSTATICMETHOD(jchar, Char, T_CHAR)
2307 DEFINE_CALLSTATICMETHOD(jshort, Short, T_SHORT)
2308
2309 DEFINE_CALLSTATICMETHOD(jobject, Object, T_OBJECT)
2310 DEFINE_CALLSTATICMETHOD(jint, Int, T_INT)
2311 DEFINE_CALLSTATICMETHOD(jlong, Long, T_LONG)
2312 DEFINE_CALLSTATICMETHOD(jfloat, Float, T_FLOAT)
2313 DEFINE_CALLSTATICMETHOD(jdouble, Double, T_DOUBLE)
2314
2315
2316 DT_VOID_RETURN_MARK_DECL(CallStaticVoidMethod);
2317 DT_VOID_RETURN_MARK_DECL(CallStaticVoidMethodV);
2318 DT_VOID_RETURN_MARK_DECL(CallStaticVoidMethodA);
2319
2320 #else /* USDT2 */
2321
2322 #define DEFINE_CALLSTATICMETHOD(ResultType, Result, Tag \
2323 , EntryProbe, ResultProbe) \
2324 \
2325 DT_RETURN_MARK_DECL_FOR(Result, CallStatic##Result##Method, ResultType \
2326 , ResultProbe); \
2327 \
2328 JNI_ENTRY(ResultType, \
2329 jni_CallStatic##Result##Method(JNIEnv *env, jclass cls, jmethodID methodID, ...)) \
2330 JNIWrapper("CallStatic" XSTR(Result) "Method"); \
2331 \
2332 EntryProbe; \
2333 ResultType ret = 0;\
2334 DT_RETURN_MARK_FOR(Result, CallStatic##Result##Method, ResultType, \
2335 (const ResultType&)ret);\
2336 \
2337 va_list args; \
2338 va_start(args, methodID); \
2339 JavaValue jvalue(Tag); \
2340 JNI_ArgumentPusherVaArg ap(methodID, args); \
2341 jni_invoke_static(env, &jvalue, NULL, JNI_STATIC, methodID, &ap, CHECK_0); \
2342 va_end(args); \
2343 ret = jvalue.get_##ResultType(); \
2344 return ret;\
2345 JNI_END
2346
2347 // the runtime type of subword integral basic types is integer
2348 DEFINE_CALLSTATICMETHOD(jboolean, Boolean, T_BOOLEAN
2349 , HOTSPOT_JNI_CALLSTATICBOOLEANMETHOD_ENTRY(env, cls, (uintptr_t)methodID),
2350 HOTSPOT_JNI_CALLSTATICBOOLEANMETHOD_RETURN(_ret_ref));
2351 DEFINE_CALLSTATICMETHOD(jbyte, Byte, T_BYTE
2352 , HOTSPOT_JNI_CALLSTATICBYTEMETHOD_ENTRY(env, cls, (uintptr_t)methodID),
2353 HOTSPOT_JNI_CALLSTATICBYTEMETHOD_RETURN(_ret_ref));
2354 DEFINE_CALLSTATICMETHOD(jchar, Char, T_CHAR
2355 , HOTSPOT_JNI_CALLSTATICCHARMETHOD_ENTRY(env, cls, (uintptr_t)methodID),
2356 HOTSPOT_JNI_CALLSTATICCHARMETHOD_RETURN(_ret_ref));
2357 DEFINE_CALLSTATICMETHOD(jshort, Short, T_SHORT
2358 , HOTSPOT_JNI_CALLSTATICSHORTMETHOD_ENTRY(env, cls, (uintptr_t)methodID),
2359 HOTSPOT_JNI_CALLSTATICSHORTMETHOD_RETURN(_ret_ref));
2360
2361 DEFINE_CALLSTATICMETHOD(jobject, Object, T_OBJECT
2362 , HOTSPOT_JNI_CALLSTATICOBJECTMETHOD_ENTRY(env, cls, (uintptr_t)methodID),
2363 HOTSPOT_JNI_CALLSTATICOBJECTMETHOD_RETURN(_ret_ref));
2364 DEFINE_CALLSTATICMETHOD(jint, Int, T_INT
2365 , HOTSPOT_JNI_CALLSTATICINTMETHOD_ENTRY(env, cls, (uintptr_t)methodID),
2366 HOTSPOT_JNI_CALLSTATICINTMETHOD_RETURN(_ret_ref));
2367 DEFINE_CALLSTATICMETHOD(jlong, Long, T_LONG
2368 , HOTSPOT_JNI_CALLSTATICLONGMETHOD_ENTRY(env, cls, (uintptr_t)methodID),
2369 HOTSPOT_JNI_CALLSTATICLONGMETHOD_RETURN(_ret_ref));
2370 // Float and double probes don't return value because dtrace doesn't currently support it
2371 DEFINE_CALLSTATICMETHOD(jfloat, Float, T_FLOAT
2372 , HOTSPOT_JNI_CALLSTATICFLOATMETHOD_ENTRY(env, cls, (uintptr_t)methodID),
2373 HOTSPOT_JNI_CALLSTATICFLOATMETHOD_RETURN());
2374 DEFINE_CALLSTATICMETHOD(jdouble, Double, T_DOUBLE
2375 , HOTSPOT_JNI_CALLSTATICDOUBLEMETHOD_ENTRY(env, cls, (uintptr_t)methodID),
2376 HOTSPOT_JNI_CALLSTATICDOUBLEMETHOD_RETURN());
2377
2378 #define DEFINE_CALLSTATICMETHODV(ResultType, Result, Tag \
2379 , EntryProbe, ResultProbe) \
2380 \
2381 DT_RETURN_MARK_DECL_FOR(Result, CallStatic##Result##MethodV, ResultType \
2382 , ResultProbe); \
2383 \
2384 JNI_ENTRY(ResultType, \
2385 jni_CallStatic##Result##MethodV(JNIEnv *env, jclass cls, jmethodID methodID, va_list args)) \
2386 JNIWrapper("CallStatic" XSTR(Result) "MethodV"); \
2387 \
2388 EntryProbe; \
2389 ResultType ret = 0;\
2390 DT_RETURN_MARK_FOR(Result, CallStatic##Result##MethodV, ResultType, \
2391 (const ResultType&)ret);\
2392 \
2393 JavaValue jvalue(Tag); \
2394 JNI_ArgumentPusherVaArg ap(methodID, args); \
2395 /* Make sure class is initialized before trying to invoke its method */ \
2396 KlassHandle k(THREAD, java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls))); \
2397 k()->initialize(CHECK_0); \
2398 jni_invoke_static(env, &jvalue, NULL, JNI_STATIC, methodID, &ap, CHECK_0); \
2399 va_end(args); \
2400 ret = jvalue.get_##ResultType(); \
2401 return ret;\
2402 JNI_END
2403
2404 // the runtime type of subword integral basic types is integer
2405 DEFINE_CALLSTATICMETHODV(jboolean, Boolean, T_BOOLEAN
2406 , HOTSPOT_JNI_CALLSTATICBOOLEANMETHODV_ENTRY(env, cls, (uintptr_t)methodID),
2407 HOTSPOT_JNI_CALLSTATICBOOLEANMETHODV_RETURN(_ret_ref));
2408 DEFINE_CALLSTATICMETHODV(jbyte, Byte, T_BYTE
2409 , HOTSPOT_JNI_CALLSTATICBYTEMETHODV_ENTRY(env, cls, (uintptr_t)methodID),
2410 HOTSPOT_JNI_CALLSTATICBYTEMETHODV_RETURN(_ret_ref));
2411 DEFINE_CALLSTATICMETHODV(jchar, Char, T_CHAR
2412 , HOTSPOT_JNI_CALLSTATICCHARMETHODV_ENTRY(env, cls, (uintptr_t)methodID),
2413 HOTSPOT_JNI_CALLSTATICCHARMETHODV_RETURN(_ret_ref));
2414 DEFINE_CALLSTATICMETHODV(jshort, Short, T_SHORT
2415 , HOTSPOT_JNI_CALLSTATICSHORTMETHODV_ENTRY(env, cls, (uintptr_t)methodID),
2416 HOTSPOT_JNI_CALLSTATICSHORTMETHODV_RETURN(_ret_ref));
2417
2418 DEFINE_CALLSTATICMETHODV(jobject, Object, T_OBJECT
2419 , HOTSPOT_JNI_CALLSTATICOBJECTMETHODV_ENTRY(env, cls, (uintptr_t)methodID),
2420 HOTSPOT_JNI_CALLSTATICOBJECTMETHODV_RETURN(_ret_ref));
2421 DEFINE_CALLSTATICMETHODV(jint, Int, T_INT
2422 , HOTSPOT_JNI_CALLSTATICINTMETHODV_ENTRY(env, cls, (uintptr_t)methodID),
2423 HOTSPOT_JNI_CALLSTATICINTMETHODV_RETURN(_ret_ref));
2424 DEFINE_CALLSTATICMETHODV(jlong, Long, T_LONG
2425 , HOTSPOT_JNI_CALLSTATICLONGMETHODV_ENTRY(env, cls, (uintptr_t)methodID),
2426 HOTSPOT_JNI_CALLSTATICLONGMETHODV_RETURN(_ret_ref));
2427 // Float and double probes don't return value because dtrace doesn't currently support it
2428 DEFINE_CALLSTATICMETHODV(jfloat, Float, T_FLOAT
2429 , HOTSPOT_JNI_CALLSTATICFLOATMETHODV_ENTRY(env, cls, (uintptr_t)methodID),
2430 HOTSPOT_JNI_CALLSTATICFLOATMETHODV_RETURN());
2431 DEFINE_CALLSTATICMETHODV(jdouble, Double, T_DOUBLE
2432 , HOTSPOT_JNI_CALLSTATICDOUBLEMETHODV_ENTRY(env, cls, (uintptr_t)methodID),
2433 HOTSPOT_JNI_CALLSTATICDOUBLEMETHODV_RETURN());
2434
2435 #define DEFINE_CALLSTATICMETHODA(ResultType, Result, Tag \
2436 , EntryProbe, ResultProbe) \
2437 \
2438 DT_RETURN_MARK_DECL_FOR(Result, CallStatic##Result##MethodA, ResultType \
2439 , ResultProbe); \
2440 \
2441 JNI_ENTRY(ResultType, \
2442 jni_CallStatic##Result##MethodA(JNIEnv *env, jclass cls, jmethodID methodID, const jvalue *args)) \
2443 JNIWrapper("CallStatic" XSTR(Result) "MethodA"); \
2444 \
2445 EntryProbe; \
2446 ResultType ret = 0;\
2447 DT_RETURN_MARK_FOR(Result, CallStatic##Result##MethodA, ResultType, \
2448 (const ResultType&)ret);\
2449 \
2450 JavaValue jvalue(Tag); \
2451 JNI_ArgumentPusherArray ap(methodID, args); \
2452 jni_invoke_static(env, &jvalue, NULL, JNI_STATIC, methodID, &ap, CHECK_0); \
2453 ret = jvalue.get_##ResultType(); \
2454 return ret;\
2455 JNI_END
2456
2457 // the runtime type of subword integral basic types is integer
2458 DEFINE_CALLSTATICMETHODA(jboolean, Boolean, T_BOOLEAN
2459 , HOTSPOT_JNI_CALLSTATICBOOLEANMETHODA_ENTRY(env, cls, (uintptr_t)methodID),
2460 HOTSPOT_JNI_CALLSTATICBOOLEANMETHODA_RETURN(_ret_ref));
2461 DEFINE_CALLSTATICMETHODA(jbyte, Byte, T_BYTE
2462 , HOTSPOT_JNI_CALLSTATICBYTEMETHODA_ENTRY(env, cls, (uintptr_t)methodID),
2463 HOTSPOT_JNI_CALLSTATICBYTEMETHODA_RETURN(_ret_ref));
2464 DEFINE_CALLSTATICMETHODA(jchar, Char, T_CHAR
2465 , HOTSPOT_JNI_CALLSTATICCHARMETHODA_ENTRY(env, cls, (uintptr_t)methodID),
2466 HOTSPOT_JNI_CALLSTATICCHARMETHODA_RETURN(_ret_ref));
2467 DEFINE_CALLSTATICMETHODA(jshort, Short, T_SHORT
2468 , HOTSPOT_JNI_CALLSTATICSHORTMETHODA_ENTRY(env, cls, (uintptr_t)methodID),
2469 HOTSPOT_JNI_CALLSTATICSHORTMETHODA_RETURN(_ret_ref));
2470
2471 DEFINE_CALLSTATICMETHODA(jobject, Object, T_OBJECT
2472 , HOTSPOT_JNI_CALLSTATICOBJECTMETHODA_ENTRY(env, cls, (uintptr_t)methodID),
2473 HOTSPOT_JNI_CALLSTATICOBJECTMETHODA_RETURN(_ret_ref));
2474 DEFINE_CALLSTATICMETHODA(jint, Int, T_INT
2475 , HOTSPOT_JNI_CALLSTATICINTMETHODA_ENTRY(env, cls, (uintptr_t)methodID),
2476 HOTSPOT_JNI_CALLSTATICINTMETHODA_RETURN(_ret_ref));
2477 DEFINE_CALLSTATICMETHODA(jlong, Long, T_LONG
2478 , HOTSPOT_JNI_CALLSTATICLONGMETHODA_ENTRY(env, cls, (uintptr_t)methodID),
2479 HOTSPOT_JNI_CALLSTATICLONGMETHODA_RETURN(_ret_ref));
2480 // Float and double probes don't return value because dtrace doesn't currently support it
2481 DEFINE_CALLSTATICMETHODA(jfloat, Float, T_FLOAT
2482 , HOTSPOT_JNI_CALLSTATICFLOATMETHODA_ENTRY(env, cls, (uintptr_t)methodID),
2483 HOTSPOT_JNI_CALLSTATICFLOATMETHODA_RETURN());
2484 DEFINE_CALLSTATICMETHODA(jdouble, Double, T_DOUBLE
2485 , HOTSPOT_JNI_CALLSTATICDOUBLEMETHODA_ENTRY(env, cls, (uintptr_t)methodID),
2486 HOTSPOT_JNI_CALLSTATICDOUBLEMETHODA_RETURN());
2487
2488 DT_VOID_RETURN_MARK_DECL(CallStaticVoidMethod
2489 , HOTSPOT_JNI_CALLSTATICVOIDMETHOD_RETURN());
2490 DT_VOID_RETURN_MARK_DECL(CallStaticVoidMethodV
2491 , HOTSPOT_JNI_CALLSTATICVOIDMETHODV_RETURN());
2492 DT_VOID_RETURN_MARK_DECL(CallStaticVoidMethodA
2493 , HOTSPOT_JNI_CALLSTATICVOIDMETHODA_RETURN());
2494 #endif /* USDT2 */
2495
2496 JNI_ENTRY(void, jni_CallStaticVoidMethod(JNIEnv *env, jclass cls, jmethodID methodID, ...))
2497 JNIWrapper("CallStaticVoidMethod");
2498 #ifndef USDT2
2499 DTRACE_PROBE3(hotspot_jni, CallStaticVoidMethod__entry, env, cls, methodID);
2500 #else /* USDT2 */
2501 HOTSPOT_JNI_CALLSTATICVOIDMETHOD_ENTRY(
2502 env, cls, (uintptr_t) methodID);
2503 #endif /* USDT2 */
2504 DT_VOID_RETURN_MARK(CallStaticVoidMethod);
2505
2506 va_list args;
2507 va_start(args, methodID);
2508 JavaValue jvalue(T_VOID);
2509 JNI_ArgumentPusherVaArg ap(methodID, args);
2510 jni_invoke_static(env, &jvalue, NULL, JNI_STATIC, methodID, &ap, CHECK);
2511 va_end(args);
2512 JNI_END
2513
2514
2515 JNI_ENTRY(void, jni_CallStaticVoidMethodV(JNIEnv *env, jclass cls, jmethodID methodID, va_list args))
2516 JNIWrapper("CallStaticVoidMethodV");
2517 #ifndef USDT2
2518 DTRACE_PROBE3(hotspot_jni, CallStaticVoidMethodV__entry, env, cls, methodID);
2519 #else /* USDT2 */
2520 HOTSPOT_JNI_CALLSTATICVOIDMETHODV_ENTRY(
2521 env, cls, (uintptr_t) methodID);
2522 #endif /* USDT2 */
2523 DT_VOID_RETURN_MARK(CallStaticVoidMethodV);
2524
2525 JavaValue jvalue(T_VOID);
2526 JNI_ArgumentPusherVaArg ap(methodID, args);
2527 jni_invoke_static(env, &jvalue, NULL, JNI_STATIC, methodID, &ap, CHECK);
2528 JNI_END
2529
2530
2531 JNI_ENTRY(void, jni_CallStaticVoidMethodA(JNIEnv *env, jclass cls, jmethodID methodID, const jvalue *args))
2532 JNIWrapper("CallStaticVoidMethodA");
2533 #ifndef USDT2
2534 DTRACE_PROBE3(hotspot_jni, CallStaticVoidMethodA__entry, env, cls, methodID);
2535 #else /* USDT2 */
2536 HOTSPOT_JNI_CALLSTATICVOIDMETHODA_ENTRY(
2537 env, cls, (uintptr_t) methodID);
2538 #endif /* USDT2 */
2539 DT_VOID_RETURN_MARK(CallStaticVoidMethodA);
2540
2541 JavaValue jvalue(T_VOID);
2542 JNI_ArgumentPusherArray ap(methodID, args);
2543 jni_invoke_static(env, &jvalue, NULL, JNI_STATIC, methodID, &ap, CHECK);
2544 JNI_END
2545
2546
2547 //
2548 // Accessing Fields
2549 //
2550
2551
2552 #ifndef USDT2
2553 DT_RETURN_MARK_DECL(GetFieldID, jfieldID);
2554 #else /* USDT2 */
2555 DT_RETURN_MARK_DECL(GetFieldID, jfieldID
2556 , HOTSPOT_JNI_GETFIELDID_RETURN((uintptr_t)_ret_ref));
2557 #endif /* USDT2 */
2558
2559 JNI_ENTRY(jfieldID, jni_GetFieldID(JNIEnv *env, jclass clazz,
2560 const char *name, const char *sig))
2561 JNIWrapper("GetFieldID");
2562 #ifndef USDT2
2563 DTRACE_PROBE4(hotspot_jni, GetFieldID__entry, env, clazz, name, sig);
2564 #else /* USDT2 */
2565 HOTSPOT_JNI_GETFIELDID_ENTRY(
2566 env, clazz, (char *) name, (char *) sig);
2567 #endif /* USDT2 */
2568 jfieldID ret = 0;
2569 DT_RETURN_MARK(GetFieldID, jfieldID, (const jfieldID&)ret);
2570
2571 // The class should have been loaded (we have an instance of the class
2572 // passed in) so the field and signature should already be in the symbol
2573 // table. If they're not there, the field doesn't exist.
2574 TempNewSymbol fieldname = SymbolTable::probe(name, (int)strlen(name));
2575 TempNewSymbol signame = SymbolTable::probe(sig, (int)strlen(sig));
2576 if (fieldname == NULL || signame == NULL) {
2577 THROW_MSG_0(vmSymbols::java_lang_NoSuchFieldError(), (char*) name);
2578 }
2579 KlassHandle k(THREAD,
2580 java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz)));
2581 // Make sure class is initialized before handing id's out to fields
2582 k()->initialize(CHECK_NULL);
2583
2584 fieldDescriptor fd;
2585 if (!k()->oop_is_instance() ||
2586 !InstanceKlass::cast(k())->find_field(fieldname, signame, false, &fd)) {
2587 THROW_MSG_0(vmSymbols::java_lang_NoSuchFieldError(), (char*) name);
2588 }
2589
2590 // A jfieldID for a non-static field is simply the offset of the field within the instanceOop
2591 // It may also have hash bits for k, if VerifyJNIFields is turned on.
2592 ret = jfieldIDWorkaround::to_instance_jfieldID(k(), fd.offset());
2593 return ret;
2594 JNI_END
2595
2596
2597 JNI_ENTRY(jobject, jni_GetObjectField(JNIEnv *env, jobject obj, jfieldID fieldID))
2598 JNIWrapper("GetObjectField");
2599 #ifndef USDT2
2600 DTRACE_PROBE3(hotspot_jni, GetObjectField__entry, env, obj, fieldID);
2601 #else /* USDT2 */
2602 HOTSPOT_JNI_GETOBJECTFIELD_ENTRY(
2603 env, obj, (uintptr_t) fieldID);
2604 #endif /* USDT2 */
2605 oop o = JNIHandles::resolve_non_null(obj);
2606 Klass* k = o->klass();
2607 int offset = jfieldIDWorkaround::from_instance_jfieldID(k, fieldID);
2608 // Keep JVMTI addition small and only check enabled flag here.
2609 // jni_GetField_probe() assumes that is okay to create handles.
2610 if (JvmtiExport::should_post_field_access()) {
2611 o = JvmtiExport::jni_GetField_probe(thread, obj, o, k, fieldID, false);
2612 }
2613 jobject ret = JNIHandles::make_local(env, o->obj_field(offset));
2614 #if INCLUDE_ALL_GCS
2615 // If G1 is enabled and we are accessing the value of the referent
2616 // field in a reference object then we need to register a non-null
2617 // referent with the SATB barrier.
2618 if (UseG1GC) {
2619 bool needs_barrier = false;
2620
2621 if (ret != NULL &&
2622 offset == java_lang_ref_Reference::referent_offset &&
2623 InstanceKlass::cast(k)->reference_type() != REF_NONE) {
2624 assert(InstanceKlass::cast(k)->is_subclass_of(SystemDictionary::Reference_klass()), "sanity");
2625 needs_barrier = true;
2626 }
2627
2628 if (needs_barrier) {
2629 oop referent = JNIHandles::resolve(ret);
2630 G1SATBCardTableModRefBS::enqueue(referent);
2631 }
2632 }
2633 #endif // INCLUDE_ALL_GCS
2634 #ifndef USDT2
2635 DTRACE_PROBE1(hotspot_jni, GetObjectField__return, ret);
2636 #else /* USDT2 */
2637 HOTSPOT_JNI_GETOBJECTFIELD_RETURN(
2638 ret);
2639 #endif /* USDT2 */
2640 return ret;
2641 JNI_END
2642
2643
2644 #ifndef USDT2
2645 #define DEFINE_GETFIELD(Return,Fieldname,Result) \
2646 \
2647 DT_RETURN_MARK_DECL_FOR(Result, Get##Result##Field, Return);\
2648 \
2649 JNI_QUICK_ENTRY(Return, jni_Get##Result##Field(JNIEnv *env, jobject obj, jfieldID fieldID)) \
2650 JNIWrapper("Get" XSTR(Result) "Field"); \
2651 \
2652 DTRACE_PROBE3(hotspot_jni, Get##Result##Field__entry, env, obj, fieldID);\
2653 Return ret = 0;\
2654 DT_RETURN_MARK_FOR(Result, Get##Result##Field, Return, (const Return&)ret);\
2655 \
2656 oop o = JNIHandles::resolve_non_null(obj); \
2657 Klass* k = o->klass(); \
2658 int offset = jfieldIDWorkaround::from_instance_jfieldID(k, fieldID); \
2659 /* Keep JVMTI addition small and only check enabled flag here. */ \
2660 /* jni_GetField_probe_nh() assumes that is not okay to create handles */ \
2661 /* and creates a ResetNoHandleMark. */ \
2662 if (JvmtiExport::should_post_field_access()) { \
2663 o = JvmtiExport::jni_GetField_probe_nh(thread, obj, o, k, fieldID, false); \
2664 } \
2665 ret = o->Fieldname##_field(offset); \
2666 return ret; \
2667 JNI_END
2668
2669 DEFINE_GETFIELD(jboolean, bool, Boolean)
2670 DEFINE_GETFIELD(jbyte, byte, Byte)
2671 DEFINE_GETFIELD(jchar, char, Char)
2672 DEFINE_GETFIELD(jshort, short, Short)
2673 DEFINE_GETFIELD(jint, int, Int)
2674 DEFINE_GETFIELD(jlong, long, Long)
2675 DEFINE_GETFIELD(jfloat, float, Float)
2676 DEFINE_GETFIELD(jdouble, double, Double)
2677
2678 #else /* USDT2 */
2679
2680 #define DEFINE_GETFIELD(Return,Fieldname,Result \
2681 , EntryProbe, ReturnProbe) \
2682 \
2683 DT_RETURN_MARK_DECL_FOR(Result, Get##Result##Field, Return \
2684 , ReturnProbe); \
2685 \
2686 JNI_QUICK_ENTRY(Return, jni_Get##Result##Field(JNIEnv *env, jobject obj, jfieldID fieldID)) \
2687 JNIWrapper("Get" XSTR(Result) "Field"); \
2688 \
2689 EntryProbe; \
2690 Return ret = 0;\
2691 DT_RETURN_MARK_FOR(Result, Get##Result##Field, Return, (const Return&)ret);\
2692 \
2693 oop o = JNIHandles::resolve_non_null(obj); \
2694 Klass* k = o->klass(); \
2695 int offset = jfieldIDWorkaround::from_instance_jfieldID(k, fieldID); \
2696 /* Keep JVMTI addition small and only check enabled flag here. */ \
2697 /* jni_GetField_probe_nh() assumes that is not okay to create handles */ \
2698 /* and creates a ResetNoHandleMark. */ \
2699 if (JvmtiExport::should_post_field_access()) { \
2700 o = JvmtiExport::jni_GetField_probe_nh(thread, obj, o, k, fieldID, false); \
2701 } \
2702 ret = o->Fieldname##_field(offset); \
2703 return ret; \
2704 JNI_END
2705
2706 DEFINE_GETFIELD(jboolean, bool, Boolean
2707 , HOTSPOT_JNI_GETBOOLEANFIELD_ENTRY(env, obj, (uintptr_t)fieldID),
2708 HOTSPOT_JNI_GETBOOLEANFIELD_RETURN(_ret_ref))
2709 DEFINE_GETFIELD(jbyte, byte, Byte
2710 , HOTSPOT_JNI_GETBYTEFIELD_ENTRY(env, obj, (uintptr_t)fieldID),
2711 HOTSPOT_JNI_GETBYTEFIELD_RETURN(_ret_ref))
2712 DEFINE_GETFIELD(jchar, char, Char
2713 , HOTSPOT_JNI_GETCHARFIELD_ENTRY(env, obj, (uintptr_t)fieldID),
2714 HOTSPOT_JNI_GETCHARFIELD_RETURN(_ret_ref))
2715 DEFINE_GETFIELD(jshort, short, Short
2716 , HOTSPOT_JNI_GETSHORTFIELD_ENTRY(env, obj, (uintptr_t)fieldID),
2717 HOTSPOT_JNI_GETSHORTFIELD_RETURN(_ret_ref))
2718 DEFINE_GETFIELD(jint, int, Int
2719 , HOTSPOT_JNI_GETINTFIELD_ENTRY(env, obj, (uintptr_t)fieldID),
2720 HOTSPOT_JNI_GETINTFIELD_RETURN(_ret_ref))
2721 DEFINE_GETFIELD(jlong, long, Long
2722 , HOTSPOT_JNI_GETLONGFIELD_ENTRY(env, obj, (uintptr_t)fieldID),
2723 HOTSPOT_JNI_GETLONGFIELD_RETURN(_ret_ref))
2724 // Float and double probes don't return value because dtrace doesn't currently support it
2725 DEFINE_GETFIELD(jfloat, float, Float
2726 , HOTSPOT_JNI_GETFLOATFIELD_ENTRY(env, obj, (uintptr_t)fieldID),
2727 HOTSPOT_JNI_GETFLOATFIELD_RETURN())
2728 DEFINE_GETFIELD(jdouble, double, Double
2729 , HOTSPOT_JNI_GETDOUBLEFIELD_ENTRY(env, obj, (uintptr_t)fieldID),
2730 HOTSPOT_JNI_GETDOUBLEFIELD_RETURN())
2731 #endif /* USDT2 */
2732
2733 address jni_GetBooleanField_addr() {
2734 return (address)jni_GetBooleanField;
2735 }
2736 address jni_GetByteField_addr() {
2737 return (address)jni_GetByteField;
2738 }
2739 address jni_GetCharField_addr() {
2740 return (address)jni_GetCharField;
2741 }
2742 address jni_GetShortField_addr() {
2743 return (address)jni_GetShortField;
2744 }
2745 address jni_GetIntField_addr() {
2746 return (address)jni_GetIntField;
2747 }
2748 address jni_GetLongField_addr() {
2749 return (address)jni_GetLongField;
2750 }
2751 address jni_GetFloatField_addr() {
2752 return (address)jni_GetFloatField;
2753 }
2754 address jni_GetDoubleField_addr() {
2755 return (address)jni_GetDoubleField;
2756 }
2757
2758 JNI_QUICK_ENTRY(void, jni_SetObjectField(JNIEnv *env, jobject obj, jfieldID fieldID, jobject value))
2759 JNIWrapper("SetObjectField");
2760 #ifndef USDT2
2761 DTRACE_PROBE4(hotspot_jni, SetObjectField__entry, env, obj, fieldID, value);
2762 #else /* USDT2 */
2763 HOTSPOT_JNI_SETOBJECTFIELD_ENTRY(
2764 env, obj, (uintptr_t) fieldID, value);
2765 #endif /* USDT2 */
2766 oop o = JNIHandles::resolve_non_null(obj);
2767 Klass* k = o->klass();
2768 int offset = jfieldIDWorkaround::from_instance_jfieldID(k, fieldID);
2769 // Keep JVMTI addition small and only check enabled flag here.
2770 // jni_SetField_probe_nh() assumes that is not okay to create handles
2771 // and creates a ResetNoHandleMark.
2772 if (JvmtiExport::should_post_field_modification()) {
2773 jvalue field_value;
2774 field_value.l = value;
2775 o = JvmtiExport::jni_SetField_probe_nh(thread, obj, o, k, fieldID, false, 'L', (jvalue *)&field_value);
2776 }
2777 o->obj_field_put(offset, JNIHandles::resolve(value));
2778 #ifndef USDT2
2779 DTRACE_PROBE(hotspot_jni, SetObjectField__return);
2780 #else /* USDT2 */
2781 HOTSPOT_JNI_SETOBJECTFIELD_RETURN(
2782 );
2783 #endif /* USDT2 */
2784 JNI_END
2785
2786 #ifndef USDT2
2787 #define DEFINE_SETFIELD(Argument,Fieldname,Result,SigType,unionType) \
2788 \
2789 JNI_QUICK_ENTRY(void, jni_Set##Result##Field(JNIEnv *env, jobject obj, jfieldID fieldID, Argument value)) \
2790 JNIWrapper("Set" XSTR(Result) "Field"); \
2791 \
2792 FP_SELECT_##Result( \
2793 DTRACE_PROBE4(hotspot_jni, Set##Result##Field__entry, env, obj, fieldID, value), \
2794 DTRACE_PROBE3(hotspot_jni, Set##Result##Field__entry, env, obj, fieldID)); \
2795 \
2796 oop o = JNIHandles::resolve_non_null(obj); \
2797 Klass* k = o->klass(); \
2798 int offset = jfieldIDWorkaround::from_instance_jfieldID(k, fieldID); \
2799 /* Keep JVMTI addition small and only check enabled flag here. */ \
2800 /* jni_SetField_probe_nh() assumes that is not okay to create handles */ \
2801 /* and creates a ResetNoHandleMark. */ \
2802 if (JvmtiExport::should_post_field_modification()) { \
2803 jvalue field_value; \
2804 field_value.unionType = value; \
2805 o = JvmtiExport::jni_SetField_probe_nh(thread, obj, o, k, fieldID, false, SigType, (jvalue *)&field_value); \
2806 } \
2807 o->Fieldname##_field_put(offset, value); \
2808 DTRACE_PROBE(hotspot_jni, Set##Result##Field__return);\
2809 JNI_END
2810
2811 DEFINE_SETFIELD(jboolean, bool, Boolean, 'Z', z)
2812 DEFINE_SETFIELD(jbyte, byte, Byte, 'B', b)
2813 DEFINE_SETFIELD(jchar, char, Char, 'C', c)
2814 DEFINE_SETFIELD(jshort, short, Short, 'S', s)
2815 DEFINE_SETFIELD(jint, int, Int, 'I', i)
2816 DEFINE_SETFIELD(jlong, long, Long, 'J', j)
2817 DEFINE_SETFIELD(jfloat, float, Float, 'F', f)
2818 DEFINE_SETFIELD(jdouble, double, Double, 'D', d)
2819
2820 #else /* USDT2 */
2821
2822 #define DEFINE_SETFIELD(Argument,Fieldname,Result,SigType,unionType \
2823 , EntryProbe, ReturnProbe) \
2824 \
2825 JNI_QUICK_ENTRY(void, jni_Set##Result##Field(JNIEnv *env, jobject obj, jfieldID fieldID, Argument value)) \
2826 JNIWrapper("Set" XSTR(Result) "Field"); \
2827 \
2828 EntryProbe; \
2829 \
2830 oop o = JNIHandles::resolve_non_null(obj); \
2831 Klass* k = o->klass(); \
2832 int offset = jfieldIDWorkaround::from_instance_jfieldID(k, fieldID); \
2833 /* Keep JVMTI addition small and only check enabled flag here. */ \
2834 /* jni_SetField_probe_nh() assumes that is not okay to create handles */ \
2835 /* and creates a ResetNoHandleMark. */ \
2836 if (JvmtiExport::should_post_field_modification()) { \
2837 jvalue field_value; \
2838 field_value.unionType = value; \
2839 o = JvmtiExport::jni_SetField_probe_nh(thread, obj, o, k, fieldID, false, SigType, (jvalue *)&field_value); \
2840 } \
2841 o->Fieldname##_field_put(offset, value); \
2842 ReturnProbe; \
2843 JNI_END
2844
2845 DEFINE_SETFIELD(jboolean, bool, Boolean, 'Z', z
2846 , HOTSPOT_JNI_SETBOOLEANFIELD_ENTRY(env, obj, (uintptr_t)fieldID, value),
2847 HOTSPOT_JNI_SETBOOLEANFIELD_RETURN())
2848 DEFINE_SETFIELD(jbyte, byte, Byte, 'B', b
2849 , HOTSPOT_JNI_SETBYTEFIELD_ENTRY(env, obj, (uintptr_t)fieldID, value),
2850 HOTSPOT_JNI_SETBYTEFIELD_RETURN())
2851 DEFINE_SETFIELD(jchar, char, Char, 'C', c
2852 , HOTSPOT_JNI_SETCHARFIELD_ENTRY(env, obj, (uintptr_t)fieldID, value),
2853 HOTSPOT_JNI_SETCHARFIELD_RETURN())
2854 DEFINE_SETFIELD(jshort, short, Short, 'S', s
2855 , HOTSPOT_JNI_SETSHORTFIELD_ENTRY(env, obj, (uintptr_t)fieldID, value),
2856 HOTSPOT_JNI_SETSHORTFIELD_RETURN())
2857 DEFINE_SETFIELD(jint, int, Int, 'I', i
2858 , HOTSPOT_JNI_SETINTFIELD_ENTRY(env, obj, (uintptr_t)fieldID, value),
2859 HOTSPOT_JNI_SETINTFIELD_RETURN())
2860 DEFINE_SETFIELD(jlong, long, Long, 'J', j
2861 , HOTSPOT_JNI_SETLONGFIELD_ENTRY(env, obj, (uintptr_t)fieldID, value),
2862 HOTSPOT_JNI_SETLONGFIELD_RETURN())
2863 // Float and double probes don't return value because dtrace doesn't currently support it
2864 DEFINE_SETFIELD(jfloat, float, Float, 'F', f
2865 , HOTSPOT_JNI_SETFLOATFIELD_ENTRY(env, obj, (uintptr_t)fieldID),
2866 HOTSPOT_JNI_SETFLOATFIELD_RETURN())
2867 DEFINE_SETFIELD(jdouble, double, Double, 'D', d
2868 , HOTSPOT_JNI_SETDOUBLEFIELD_ENTRY(env, obj, (uintptr_t)fieldID),
2869 HOTSPOT_JNI_SETDOUBLEFIELD_RETURN())
2870 #endif /* USDT2 */
2871
2872 #ifndef USDT2
2873 DT_RETURN_MARK_DECL(ToReflectedField, jobject);
2874 #else /* USDT2 */
2875 DT_RETURN_MARK_DECL(ToReflectedField, jobject
2876 , HOTSPOT_JNI_TOREFLECTEDFIELD_RETURN(_ret_ref));
2877 #endif /* USDT2 */
2878
2879 JNI_ENTRY(jobject, jni_ToReflectedField(JNIEnv *env, jclass cls, jfieldID fieldID, jboolean isStatic))
2880 JNIWrapper("ToReflectedField");
2881 #ifndef USDT2
2882 DTRACE_PROBE4(hotspot_jni, ToReflectedField__entry,
2883 env, cls, fieldID, isStatic);
2884 #else /* USDT2 */
2885 HOTSPOT_JNI_TOREFLECTEDFIELD_ENTRY(
2886 env, cls, (uintptr_t) fieldID, isStatic);
2887 #endif /* USDT2 */
2888 jobject ret = NULL;
2889 DT_RETURN_MARK(ToReflectedField, jobject, (const jobject&)ret);
2890
2891 fieldDescriptor fd;
2892 bool found = false;
2893 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls));
2894
2895 assert(jfieldIDWorkaround::is_static_jfieldID(fieldID) == (isStatic != 0), "invalid fieldID");
2896
2897 if (isStatic) {
2898 // Static field. The fieldID a JNIid specifying the field holder and the offset within the Klass*.
2899 JNIid* id = jfieldIDWorkaround::from_static_jfieldID(fieldID);
2900 assert(id->is_static_field_id(), "invalid static field id");
2901 found = id->find_local_field(&fd);
2902 } else {
2903 // Non-static field. The fieldID is really the offset of the field within the instanceOop.
2904 int offset = jfieldIDWorkaround::from_instance_jfieldID(k, fieldID);
2905 found = InstanceKlass::cast(k)->find_field_from_offset(offset, false, &fd);
2906 }
2907 assert(found, "bad fieldID passed into jni_ToReflectedField");
2908 oop reflected = Reflection::new_field(&fd, UseNewReflection, CHECK_NULL);
2909 ret = JNIHandles::make_local(env, reflected);
2910 return ret;
2911 JNI_END
2912
2913
2914 //
2915 // Accessing Static Fields
2916 //
2917 #ifndef USDT2
2918 DT_RETURN_MARK_DECL(GetStaticFieldID, jfieldID);
2919 #else /* USDT2 */
2920 DT_RETURN_MARK_DECL(GetStaticFieldID, jfieldID
2921 , HOTSPOT_JNI_GETSTATICFIELDID_RETURN((uintptr_t)_ret_ref));
2922 #endif /* USDT2 */
2923
2924 JNI_ENTRY(jfieldID, jni_GetStaticFieldID(JNIEnv *env, jclass clazz,
2925 const char *name, const char *sig))
2926 JNIWrapper("GetStaticFieldID");
2927 #ifndef USDT2
2928 DTRACE_PROBE4(hotspot_jni, GetStaticFieldID__entry, env, clazz, name, sig);
2929 #else /* USDT2 */
2930 HOTSPOT_JNI_GETSTATICFIELDID_ENTRY(
2931 env, clazz, (char *) name, (char *) sig);
2932 #endif /* USDT2 */
2933 jfieldID ret = NULL;
2934 DT_RETURN_MARK(GetStaticFieldID, jfieldID, (const jfieldID&)ret);
2935
2936 // The class should have been loaded (we have an instance of the class
2937 // passed in) so the field and signature should already be in the symbol
2938 // table. If they're not there, the field doesn't exist.
2939 TempNewSymbol fieldname = SymbolTable::probe(name, (int)strlen(name));
2940 TempNewSymbol signame = SymbolTable::probe(sig, (int)strlen(sig));
2941 if (fieldname == NULL || signame == NULL) {
2942 THROW_MSG_0(vmSymbols::java_lang_NoSuchFieldError(), (char*) name);
2943 }
2944 KlassHandle k(THREAD,
2945 java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz)));
2946 // Make sure class is initialized before handing id's out to static fields
2947 k()->initialize(CHECK_NULL);
2948
2949 fieldDescriptor fd;
2950 if (!k()->oop_is_instance() ||
2951 !InstanceKlass::cast(k())->find_field(fieldname, signame, true, &fd)) {
2952 THROW_MSG_0(vmSymbols::java_lang_NoSuchFieldError(), (char*) name);
2953 }
2954
2955 // A jfieldID for a static field is a JNIid specifying the field holder and the offset within the Klass*
2956 JNIid* id = fd.field_holder()->jni_id_for(fd.offset());
2957 debug_only(id->set_is_static_field_id();)
2958
2959 debug_only(id->verify(fd.field_holder()));
2960
2961 ret = jfieldIDWorkaround::to_static_jfieldID(id);
2962 return ret;
2963 JNI_END
2964
2965
2966 JNI_ENTRY(jobject, jni_GetStaticObjectField(JNIEnv *env, jclass clazz, jfieldID fieldID))
2967 JNIWrapper("GetStaticObjectField");
2968 #ifndef USDT2
2969 DTRACE_PROBE3(hotspot_jni, GetStaticObjectField__entry, env, clazz, fieldID);
2970 #else /* USDT2 */
2971 HOTSPOT_JNI_GETSTATICOBJECTFIELD_ENTRY(
2972 env, clazz, (uintptr_t) fieldID);
2973 #endif /* USDT2 */
2974 #if INCLUDE_JNI_CHECK
2975 DEBUG_ONLY(Klass* param_k = jniCheck::validate_class(thread, clazz);)
2976 #endif // INCLUDE_JNI_CHECK
2977 JNIid* id = jfieldIDWorkaround::from_static_jfieldID(fieldID);
2978 assert(id->is_static_field_id(), "invalid static field id");
2979 // Keep JVMTI addition small and only check enabled flag here.
2980 // jni_GetField_probe() assumes that is okay to create handles.
2981 if (JvmtiExport::should_post_field_access()) {
2982 JvmtiExport::jni_GetField_probe(thread, NULL, NULL, id->holder(), fieldID, true);
2983 }
2984 jobject ret = JNIHandles::make_local(id->holder()->java_mirror()->obj_field(id->offset()));
2985 #ifndef USDT2
2986 DTRACE_PROBE1(hotspot_jni, GetStaticObjectField__return, ret);
2987 #else /* USDT2 */
2988 HOTSPOT_JNI_GETSTATICOBJECTFIELD_RETURN(
2989 ret);
2990 #endif /* USDT2 */
2991 return ret;
2992 JNI_END
2993
2994 #ifndef USDT2
2995 #define DEFINE_GETSTATICFIELD(Return,Fieldname,Result) \
2996 \
2997 DT_RETURN_MARK_DECL_FOR(Result, GetStatic##Result##Field, Return);\
2998 \
2999 JNI_ENTRY(Return, jni_GetStatic##Result##Field(JNIEnv *env, jclass clazz, jfieldID fieldID)) \
3000 JNIWrapper("GetStatic" XSTR(Result) "Field"); \
3001 DTRACE_PROBE3(hotspot_jni, GetStatic##Result##Field__entry, env, clazz, fieldID);\
3002 Return ret = 0;\
3003 DT_RETURN_MARK_FOR(Result, GetStatic##Result##Field, Return, \
3004 (const Return&)ret);\
3005 JNIid* id = jfieldIDWorkaround::from_static_jfieldID(fieldID); \
3006 assert(id->is_static_field_id(), "invalid static field id"); \
3007 /* Keep JVMTI addition small and only check enabled flag here. */ \
3008 /* jni_GetField_probe() assumes that is okay to create handles. */ \
3009 if (JvmtiExport::should_post_field_access()) { \
3010 JvmtiExport::jni_GetField_probe(thread, NULL, NULL, id->holder(), fieldID, true); \
3011 } \
3012 ret = id->holder()->java_mirror()-> Fieldname##_field (id->offset()); \
3013 return ret;\
3014 JNI_END
3015
3016 DEFINE_GETSTATICFIELD(jboolean, bool, Boolean)
3017 DEFINE_GETSTATICFIELD(jbyte, byte, Byte)
3018 DEFINE_GETSTATICFIELD(jchar, char, Char)
3019 DEFINE_GETSTATICFIELD(jshort, short, Short)
3020 DEFINE_GETSTATICFIELD(jint, int, Int)
3021 DEFINE_GETSTATICFIELD(jlong, long, Long)
3022 DEFINE_GETSTATICFIELD(jfloat, float, Float)
3023 DEFINE_GETSTATICFIELD(jdouble, double, Double)
3024
3025 #else /* USDT2 */
3026
3027 #define DEFINE_GETSTATICFIELD(Return,Fieldname,Result \
3028 , EntryProbe, ReturnProbe) \
3029 \
3030 DT_RETURN_MARK_DECL_FOR(Result, GetStatic##Result##Field, Return \
3031 , ReturnProbe); \
3032 \
3033 JNI_ENTRY(Return, jni_GetStatic##Result##Field(JNIEnv *env, jclass clazz, jfieldID fieldID)) \
3034 JNIWrapper("GetStatic" XSTR(Result) "Field"); \
3035 EntryProbe; \
3036 Return ret = 0;\
3037 DT_RETURN_MARK_FOR(Result, GetStatic##Result##Field, Return, \
3038 (const Return&)ret);\
3039 JNIid* id = jfieldIDWorkaround::from_static_jfieldID(fieldID); \
3040 assert(id->is_static_field_id(), "invalid static field id"); \
3041 /* Keep JVMTI addition small and only check enabled flag here. */ \
3042 /* jni_GetField_probe() assumes that is okay to create handles. */ \
3043 if (JvmtiExport::should_post_field_access()) { \
3044 JvmtiExport::jni_GetField_probe(thread, NULL, NULL, id->holder(), fieldID, true); \
3045 } \
3046 ret = id->holder()->java_mirror()-> Fieldname##_field (id->offset()); \
3047 return ret;\
3048 JNI_END
3049
3050 DEFINE_GETSTATICFIELD(jboolean, bool, Boolean
3051 , HOTSPOT_JNI_GETSTATICBOOLEANFIELD_ENTRY(env, clazz, (uintptr_t) fieldID), HOTSPOT_JNI_GETSTATICBOOLEANFIELD_RETURN(_ret_ref))
3052 DEFINE_GETSTATICFIELD(jbyte, byte, Byte
3053 , HOTSPOT_JNI_GETSTATICBYTEFIELD_ENTRY(env, clazz, (uintptr_t) fieldID), HOTSPOT_JNI_GETSTATICBYTEFIELD_RETURN(_ret_ref) )
3054 DEFINE_GETSTATICFIELD(jchar, char, Char
3055 , HOTSPOT_JNI_GETSTATICCHARFIELD_ENTRY(env, clazz, (uintptr_t) fieldID), HOTSPOT_JNI_GETSTATICCHARFIELD_RETURN(_ret_ref) )
3056 DEFINE_GETSTATICFIELD(jshort, short, Short
3057 , HOTSPOT_JNI_GETSTATICSHORTFIELD_ENTRY(env, clazz, (uintptr_t) fieldID), HOTSPOT_JNI_GETSTATICSHORTFIELD_RETURN(_ret_ref) )
3058 DEFINE_GETSTATICFIELD(jint, int, Int
3059 , HOTSPOT_JNI_GETSTATICINTFIELD_ENTRY(env, clazz, (uintptr_t) fieldID), HOTSPOT_JNI_GETSTATICINTFIELD_RETURN(_ret_ref) )
3060 DEFINE_GETSTATICFIELD(jlong, long, Long
3061 , HOTSPOT_JNI_GETSTATICLONGFIELD_ENTRY(env, clazz, (uintptr_t) fieldID), HOTSPOT_JNI_GETSTATICLONGFIELD_RETURN(_ret_ref) )
3062 // Float and double probes don't return value because dtrace doesn't currently support it
3063 DEFINE_GETSTATICFIELD(jfloat, float, Float
3064 , HOTSPOT_JNI_GETSTATICFLOATFIELD_ENTRY(env, clazz, (uintptr_t) fieldID), HOTSPOT_JNI_GETSTATICFLOATFIELD_RETURN() )
3065 DEFINE_GETSTATICFIELD(jdouble, double, Double
3066 , HOTSPOT_JNI_GETSTATICDOUBLEFIELD_ENTRY(env, clazz, (uintptr_t) fieldID), HOTSPOT_JNI_GETSTATICDOUBLEFIELD_RETURN() )
3067 #endif /* USDT2 */
3068
3069 JNI_ENTRY(void, jni_SetStaticObjectField(JNIEnv *env, jclass clazz, jfieldID fieldID, jobject value))
3070 JNIWrapper("SetStaticObjectField");
3071 #ifndef USDT2
3072 DTRACE_PROBE4(hotspot_jni, SetStaticObjectField__entry, env, clazz, fieldID, value);
3073 #else /* USDT2 */
3074 HOTSPOT_JNI_SETSTATICOBJECTFIELD_ENTRY(
3075 env, clazz, (uintptr_t) fieldID, value);
3076 #endif /* USDT2 */
3077 JNIid* id = jfieldIDWorkaround::from_static_jfieldID(fieldID);
3078 assert(id->is_static_field_id(), "invalid static field id");
3079 // Keep JVMTI addition small and only check enabled flag here.
3080 // jni_SetField_probe() assumes that is okay to create handles.
3081 if (JvmtiExport::should_post_field_modification()) {
3082 jvalue field_value;
3083 field_value.l = value;
3084 JvmtiExport::jni_SetField_probe(thread, NULL, NULL, id->holder(), fieldID, true, 'L', (jvalue *)&field_value);
3085 }
3086 id->holder()->java_mirror()->obj_field_put(id->offset(), JNIHandles::resolve(value));
3087 #ifndef USDT2
3088 DTRACE_PROBE(hotspot_jni, SetStaticObjectField__return);
3089 #else /* USDT2 */
3090 HOTSPOT_JNI_SETSTATICOBJECTFIELD_RETURN(
3091 );
3092 #endif /* USDT2 */
3093 JNI_END
3094
3095
3096 #ifndef USDT2
3097 #define DEFINE_SETSTATICFIELD(Argument,Fieldname,Result,SigType,unionType) \
3098 \
3099 JNI_ENTRY(void, jni_SetStatic##Result##Field(JNIEnv *env, jclass clazz, jfieldID fieldID, Argument value)) \
3100 JNIWrapper("SetStatic" XSTR(Result) "Field"); \
3101 FP_SELECT_##Result( \
3102 DTRACE_PROBE4(hotspot_jni, SetStatic##Result##Field__entry, env, clazz, fieldID, value), \
3103 DTRACE_PROBE3(hotspot_jni, SetStatic##Result##Field__entry, env, clazz, fieldID)); \
3104 \
3105 JNIid* id = jfieldIDWorkaround::from_static_jfieldID(fieldID); \
3106 assert(id->is_static_field_id(), "invalid static field id"); \
3107 /* Keep JVMTI addition small and only check enabled flag here. */ \
3108 /* jni_SetField_probe() assumes that is okay to create handles. */ \
3109 if (JvmtiExport::should_post_field_modification()) { \
3110 jvalue field_value; \
3111 field_value.unionType = value; \
3112 JvmtiExport::jni_SetField_probe(thread, NULL, NULL, id->holder(), fieldID, true, SigType, (jvalue *)&field_value); \
3113 } \
3114 id->holder()->java_mirror()-> Fieldname##_field_put (id->offset(), value); \
3115 DTRACE_PROBE(hotspot_jni, SetStatic##Result##Field__return);\
3116 JNI_END
3117
3118 DEFINE_SETSTATICFIELD(jboolean, bool, Boolean, 'Z', z)
3119 DEFINE_SETSTATICFIELD(jbyte, byte, Byte, 'B', b)
3120 DEFINE_SETSTATICFIELD(jchar, char, Char, 'C', c)
3121 DEFINE_SETSTATICFIELD(jshort, short, Short, 'S', s)
3122 DEFINE_SETSTATICFIELD(jint, int, Int, 'I', i)
3123 DEFINE_SETSTATICFIELD(jlong, long, Long, 'J', j)
3124 DEFINE_SETSTATICFIELD(jfloat, float, Float, 'F', f)
3125 DEFINE_SETSTATICFIELD(jdouble, double, Double, 'D', d)
3126
3127 #else /* USDT2 */
3128
3129 #define DEFINE_SETSTATICFIELD(Argument,Fieldname,Result,SigType,unionType \
3130 , EntryProbe, ReturnProbe) \
3131 \
3132 JNI_ENTRY(void, jni_SetStatic##Result##Field(JNIEnv *env, jclass clazz, jfieldID fieldID, Argument value)) \
3133 JNIWrapper("SetStatic" XSTR(Result) "Field"); \
3134 EntryProbe; \
3135 \
3136 JNIid* id = jfieldIDWorkaround::from_static_jfieldID(fieldID); \
3137 assert(id->is_static_field_id(), "invalid static field id"); \
3138 /* Keep JVMTI addition small and only check enabled flag here. */ \
3139 /* jni_SetField_probe() assumes that is okay to create handles. */ \
3140 if (JvmtiExport::should_post_field_modification()) { \
3141 jvalue field_value; \
3142 field_value.unionType = value; \
3143 JvmtiExport::jni_SetField_probe(thread, NULL, NULL, id->holder(), fieldID, true, SigType, (jvalue *)&field_value); \
3144 } \
3145 id->holder()->java_mirror()-> Fieldname##_field_put (id->offset(), value); \
3146 ReturnProbe;\
3147 JNI_END
3148
3149 DEFINE_SETSTATICFIELD(jboolean, bool, Boolean, 'Z', z
3150 , HOTSPOT_JNI_SETBOOLEANFIELD_ENTRY(env, clazz, (uintptr_t)fieldID, value),
3151 HOTSPOT_JNI_SETBOOLEANFIELD_RETURN())
3152 DEFINE_SETSTATICFIELD(jbyte, byte, Byte, 'B', b
3153 , HOTSPOT_JNI_SETSTATICBYTEFIELD_ENTRY(env, clazz, (uintptr_t) fieldID, value),
3154 HOTSPOT_JNI_SETSTATICBYTEFIELD_RETURN())
3155 DEFINE_SETSTATICFIELD(jchar, char, Char, 'C', c
3156 , HOTSPOT_JNI_SETSTATICCHARFIELD_ENTRY(env, clazz, (uintptr_t) fieldID, value),
3157 HOTSPOT_JNI_SETSTATICCHARFIELD_RETURN())
3158 DEFINE_SETSTATICFIELD(jshort, short, Short, 'S', s
3159 , HOTSPOT_JNI_SETSTATICSHORTFIELD_ENTRY(env, clazz, (uintptr_t) fieldID, value),
3160 HOTSPOT_JNI_SETSTATICSHORTFIELD_RETURN())
3161 DEFINE_SETSTATICFIELD(jint, int, Int, 'I', i
3162 , HOTSPOT_JNI_SETSTATICINTFIELD_ENTRY(env, clazz, (uintptr_t) fieldID, value),
3163 HOTSPOT_JNI_SETSTATICINTFIELD_RETURN())
3164 DEFINE_SETSTATICFIELD(jlong, long, Long, 'J', j
3165 , HOTSPOT_JNI_SETSTATICLONGFIELD_ENTRY(env, clazz, (uintptr_t) fieldID, value),
3166 HOTSPOT_JNI_SETSTATICLONGFIELD_RETURN())
3167 // Float and double probes don't return value because dtrace doesn't currently support it
3168 DEFINE_SETSTATICFIELD(jfloat, float, Float, 'F', f
3169 , HOTSPOT_JNI_SETSTATICFLOATFIELD_ENTRY(env, clazz, (uintptr_t) fieldID),
3170 HOTSPOT_JNI_SETSTATICFLOATFIELD_RETURN())
3171 DEFINE_SETSTATICFIELD(jdouble, double, Double, 'D', d
3172 , HOTSPOT_JNI_SETSTATICDOUBLEFIELD_ENTRY(env, clazz, (uintptr_t) fieldID),
3173 HOTSPOT_JNI_SETSTATICDOUBLEFIELD_RETURN())
3174 #endif /* USDT2 */
3175
3176 //
3177 // String Operations
3178 //
3179
3180 // Unicode Interface
3181
3182 #ifndef USDT2
3183 DT_RETURN_MARK_DECL(NewString, jstring);
3184 #else /* USDT2 */
3185 DT_RETURN_MARK_DECL(NewString, jstring
3186 , HOTSPOT_JNI_NEWSTRING_RETURN(_ret_ref));
3187 #endif /* USDT2 */
3188
3189 JNI_ENTRY(jstring, jni_NewString(JNIEnv *env, const jchar *unicodeChars, jsize len))
3190 JNIWrapper("NewString");
3191 #ifndef USDT2
3192 DTRACE_PROBE3(hotspot_jni, NewString__entry, env, unicodeChars, len);
3193 #else /* USDT2 */
3194 HOTSPOT_JNI_NEWSTRING_ENTRY(
3195 env, (uint16_t *) unicodeChars, len);
3196 #endif /* USDT2 */
3197 jstring ret = NULL;
3198 DT_RETURN_MARK(NewString, jstring, (const jstring&)ret);
3199 oop string=java_lang_String::create_oop_from_unicode((jchar*) unicodeChars, len, CHECK_NULL);
3200 ret = (jstring) JNIHandles::make_local(env, string);
3201 return ret;
3202 JNI_END
3203
3204
3205 JNI_QUICK_ENTRY(jsize, jni_GetStringLength(JNIEnv *env, jstring string))
3206 JNIWrapper("GetStringLength");
3207 #ifndef USDT2
3208 DTRACE_PROBE2(hotspot_jni, GetStringLength__entry, env, string);
3209 #else /* USDT2 */
3210 HOTSPOT_JNI_GETSTRINGLENGTH_ENTRY(
3211 env, string);
3212 #endif /* USDT2 */
3213 jsize ret = java_lang_String::length(JNIHandles::resolve_non_null(string));
3214 #ifndef USDT2
3215 DTRACE_PROBE1(hotspot_jni, GetStringLength__return, ret);
3216 #else /* USDT2 */
3217 HOTSPOT_JNI_GETSTRINGLENGTH_RETURN(
3218 ret);
3219 #endif /* USDT2 */
3220 return ret;
3221 JNI_END
3222
3223
3224 JNI_QUICK_ENTRY(const jchar*, jni_GetStringChars(
3225 JNIEnv *env, jstring string, jboolean *isCopy))
3226 JNIWrapper("GetStringChars");
3227 #ifndef USDT2
3228 DTRACE_PROBE3(hotspot_jni, GetStringChars__entry, env, string, isCopy);
3229 #else /* USDT2 */
3230 HOTSPOT_JNI_GETSTRINGCHARS_ENTRY(
3231 env, string, (uintptr_t *) isCopy);
3232 #endif /* USDT2 */
3233 oop s = JNIHandles::resolve_non_null(string);
3234 int s_len = java_lang_String::length(s);
3235 typeArrayOop s_value = java_lang_String::value(s);
3236 int s_offset = java_lang_String::offset(s);
3237 jchar* buf = NEW_C_HEAP_ARRAY_RETURN_NULL(jchar, s_len + 1, mtInternal); // add one for zero termination
3238 /* JNI Specification states return NULL on OOM */
3239 if (buf != NULL) {
3240 if (s_len > 0) {
3241 memcpy(buf, s_value->char_at_addr(s_offset), sizeof(jchar)*s_len);
3242 }
3243 buf[s_len] = 0;
3244 //%note jni_5
3245 if (isCopy != NULL) {
3246 *isCopy = JNI_TRUE;
3247 }
3248 }
3249 #ifndef USDT2
3250 DTRACE_PROBE1(hotspot_jni, GetStringChars__return, buf);
3251 #else /* USDT2 */
3252 HOTSPOT_JNI_GETSTRINGCHARS_RETURN(
3253 buf);
3254 #endif /* USDT2 */
3255 return buf;
3256 JNI_END
3257
3258
3259 JNI_QUICK_ENTRY(void, jni_ReleaseStringChars(JNIEnv *env, jstring str, const jchar *chars))
3260 JNIWrapper("ReleaseStringChars");
3261 #ifndef USDT2
3262 DTRACE_PROBE3(hotspot_jni, ReleaseStringChars__entry, env, str, chars);
3263 #else /* USDT2 */
3264 HOTSPOT_JNI_RELEASESTRINGCHARS_ENTRY(
3265 env, str, (uint16_t *) chars);
3266 #endif /* USDT2 */
3267 //%note jni_6
3268 if (chars != NULL) {
3269 // Since String objects are supposed to be immutable, don't copy any
3270 // new data back. A bad user will have to go after the char array.
3271 FreeHeap((void*) chars);
3272 }
3273 #ifndef USDT2
3274 DTRACE_PROBE(hotspot_jni, ReleaseStringChars__return);
3275 #else /* USDT2 */
3276 HOTSPOT_JNI_RELEASESTRINGCHARS_RETURN(
3277 );
3278 #endif /* USDT2 */
3279 JNI_END
3280
3281
3282 // UTF Interface
3283
3284 #ifndef USDT2
3285 DT_RETURN_MARK_DECL(NewStringUTF, jstring);
3286 #else /* USDT2 */
3287 DT_RETURN_MARK_DECL(NewStringUTF, jstring
3288 , HOTSPOT_JNI_NEWSTRINGUTF_RETURN(_ret_ref));
3289 #endif /* USDT2 */
3290
3291 JNI_ENTRY(jstring, jni_NewStringUTF(JNIEnv *env, const char *bytes))
3292 JNIWrapper("NewStringUTF");
3293 #ifndef USDT2
3294 DTRACE_PROBE2(hotspot_jni, NewStringUTF__entry, env, bytes);
3295 #else /* USDT2 */
3296 HOTSPOT_JNI_NEWSTRINGUTF_ENTRY(
3297 env, (char *) bytes);
3298 #endif /* USDT2 */
3299 jstring ret;
3300 DT_RETURN_MARK(NewStringUTF, jstring, (const jstring&)ret);
3301
3302 oop result = java_lang_String::create_oop_from_str((char*) bytes, CHECK_NULL);
3303 ret = (jstring) JNIHandles::make_local(env, result);
3304 return ret;
3305 JNI_END
3306
3307
3308 JNI_ENTRY(jsize, jni_GetStringUTFLength(JNIEnv *env, jstring string))
3309 JNIWrapper("GetStringUTFLength");
3310 #ifndef USDT2
3311 DTRACE_PROBE2(hotspot_jni, GetStringUTFLength__entry, env, string);
3312 #else /* USDT2 */
3313 HOTSPOT_JNI_GETSTRINGUTFLENGTH_ENTRY(
3314 env, string);
3315 #endif /* USDT2 */
3316 jsize ret = java_lang_String::utf8_length(JNIHandles::resolve_non_null(string));
3317 #ifndef USDT2
3318 DTRACE_PROBE1(hotspot_jni, GetStringUTFLength__return, ret);
3319 #else /* USDT2 */
3320 HOTSPOT_JNI_GETSTRINGUTFLENGTH_RETURN(
3321 ret);
3322 #endif /* USDT2 */
3323 return ret;
3324 JNI_END
3325
3326
3327 JNI_ENTRY(const char*, jni_GetStringUTFChars(JNIEnv *env, jstring string, jboolean *isCopy))
3328 JNIWrapper("GetStringUTFChars");
3329 #ifndef USDT2
3330 DTRACE_PROBE3(hotspot_jni, GetStringUTFChars__entry, env, string, isCopy);
3331 #else /* USDT2 */
3332 HOTSPOT_JNI_GETSTRINGUTFCHARS_ENTRY(
3333 env, string, (uintptr_t *) isCopy);
3334 #endif /* USDT2 */
3335 oop java_string = JNIHandles::resolve_non_null(string);
3336 size_t length = java_lang_String::utf8_length(java_string);
3337 /* JNI Specification states return NULL on OOM */
3338 char* result = AllocateHeap(length + 1, mtInternal, 0, AllocFailStrategy::RETURN_NULL);
3339 if (result != NULL) {
3340 java_lang_String::as_utf8_string(java_string, result, (int) length + 1);
3341 if (isCopy != NULL) {
3342 *isCopy = JNI_TRUE;
3343 }
3344 }
3345 #ifndef USDT2
3346 DTRACE_PROBE1(hotspot_jni, GetStringUTFChars__return, result);
3347 #else /* USDT2 */
3348 HOTSPOT_JNI_GETSTRINGUTFCHARS_RETURN(
3349 result);
3350 #endif /* USDT2 */
3351 return result;
3352 JNI_END
3353
3354
3355 JNI_LEAF(void, jni_ReleaseStringUTFChars(JNIEnv *env, jstring str, const char *chars))
3356 JNIWrapper("ReleaseStringUTFChars");
3357 #ifndef USDT2
3358 DTRACE_PROBE3(hotspot_jni, ReleaseStringUTFChars__entry, env, str, chars);
3359 #else /* USDT2 */
3360 HOTSPOT_JNI_RELEASESTRINGUTFCHARS_ENTRY(
3361 env, str, (char *) chars);
3362 #endif /* USDT2 */
3363 if (chars != NULL) {
3364 FreeHeap((char*) chars);
3365 }
3366 #ifndef USDT2
3367 DTRACE_PROBE(hotspot_jni, ReleaseStringUTFChars__return);
3368 #else /* USDT2 */
3369 HOTSPOT_JNI_RELEASESTRINGUTFCHARS_RETURN(
3370 );
3371 #endif /* USDT2 */
3372 JNI_END
3373
3374
3375 JNI_QUICK_ENTRY(jsize, jni_GetArrayLength(JNIEnv *env, jarray array))
3376 JNIWrapper("GetArrayLength");
3377 #ifndef USDT2
3378 DTRACE_PROBE2(hotspot_jni, GetArrayLength__entry, env, array);
3379 #else /* USDT2 */
3380 HOTSPOT_JNI_GETARRAYLENGTH_ENTRY(
3381 env, array);
3382 #endif /* USDT2 */
3383 arrayOop a = arrayOop(JNIHandles::resolve_non_null(array));
3384 assert(a->is_array(), "must be array");
3385 jsize ret = a->length();
3386 #ifndef USDT2
3387 DTRACE_PROBE1(hotspot_jni, GetArrayLength__return, ret);
3388 #else /* USDT2 */
3389 HOTSPOT_JNI_GETARRAYLENGTH_RETURN(
3390 ret);
3391 #endif /* USDT2 */
3392 return ret;
3393 JNI_END
3394
3395
3396 //
3397 // Object Array Operations
3398 //
3399
3400 #ifndef USDT2
3401 DT_RETURN_MARK_DECL(NewObjectArray, jobjectArray);
3402 #else /* USDT2 */
3403 DT_RETURN_MARK_DECL(NewObjectArray, jobjectArray
3404 , HOTSPOT_JNI_NEWOBJECTARRAY_RETURN(_ret_ref));
3405 #endif /* USDT2 */
3406
3407 JNI_ENTRY(jobjectArray, jni_NewObjectArray(JNIEnv *env, jsize length, jclass elementClass, jobject initialElement))
3408 JNIWrapper("NewObjectArray");
3409 #ifndef USDT2
3410 DTRACE_PROBE4(hotspot_jni, NewObjectArray__entry, env, length, elementClass, initialElement);
3411 #else /* USDT2 */
3412 HOTSPOT_JNI_NEWOBJECTARRAY_ENTRY(
3413 env, length, elementClass, initialElement);
3414 #endif /* USDT2 */
3415 jobjectArray ret = NULL;
3416 DT_RETURN_MARK(NewObjectArray, jobjectArray, (const jobjectArray&)ret);
3417 KlassHandle ek(THREAD, java_lang_Class::as_Klass(JNIHandles::resolve_non_null(elementClass)));
3418 Klass* ako = ek()->array_klass(CHECK_NULL);
3419 KlassHandle ak = KlassHandle(THREAD, ako);
3420 ObjArrayKlass::cast(ak())->initialize(CHECK_NULL);
3421 objArrayOop result = ObjArrayKlass::cast(ak())->allocate(length, CHECK_NULL);
3422 oop initial_value = JNIHandles::resolve(initialElement);
3423 if (initial_value != NULL) { // array already initialized with NULL
3424 for (int index = 0; index < length; index++) {
3425 result->obj_at_put(index, initial_value);
3426 }
3427 }
3428 ret = (jobjectArray) JNIHandles::make_local(env, result);
3429 return ret;
3430 JNI_END
3431
3432 #ifndef USDT2
3433 DT_RETURN_MARK_DECL(GetObjectArrayElement, jobject);
3434 #else /* USDT2 */
3435 DT_RETURN_MARK_DECL(GetObjectArrayElement, jobject
3436 , HOTSPOT_JNI_GETOBJECTARRAYELEMENT_RETURN(_ret_ref));
3437 #endif /* USDT2 */
3438
3439 JNI_ENTRY(jobject, jni_GetObjectArrayElement(JNIEnv *env, jobjectArray array, jsize index))
3440 JNIWrapper("GetObjectArrayElement");
3441 #ifndef USDT2
3442 DTRACE_PROBE3(hotspot_jni, GetObjectArrayElement__entry, env, array, index);
3443 #else /* USDT2 */
3444 HOTSPOT_JNI_GETOBJECTARRAYELEMENT_ENTRY(
3445 env, array, index);
3446 #endif /* USDT2 */
3447 jobject ret = NULL;
3448 DT_RETURN_MARK(GetObjectArrayElement, jobject, (const jobject&)ret);
3449 objArrayOop a = objArrayOop(JNIHandles::resolve_non_null(array));
3450 if (a->is_within_bounds(index)) {
3451 ret = JNIHandles::make_local(env, a->obj_at(index));
3452 return ret;
3453 } else {
3454 char buf[jintAsStringSize];
3455 sprintf(buf, "%d", index);
3456 THROW_MSG_0(vmSymbols::java_lang_ArrayIndexOutOfBoundsException(), buf);
3457 }
3458 JNI_END
3459
3460 #ifndef USDT2
3461 DT_VOID_RETURN_MARK_DECL(SetObjectArrayElement);
3462 #else /* USDT2 */
3463 DT_VOID_RETURN_MARK_DECL(SetObjectArrayElement
3464 , HOTSPOT_JNI_SETOBJECTARRAYELEMENT_RETURN());
3465 #endif /* USDT2 */
3466
3467 JNI_ENTRY(void, jni_SetObjectArrayElement(JNIEnv *env, jobjectArray array, jsize index, jobject value))
3468 JNIWrapper("SetObjectArrayElement");
3469 #ifndef USDT2
3470 DTRACE_PROBE4(hotspot_jni, SetObjectArrayElement__entry, env, array, index, value);
3471 #else /* USDT2 */
3472 HOTSPOT_JNI_SETOBJECTARRAYELEMENT_ENTRY(
3473 env, array, index, value);
3474 #endif /* USDT2 */
3475 DT_VOID_RETURN_MARK(SetObjectArrayElement);
3476
3477 objArrayOop a = objArrayOop(JNIHandles::resolve_non_null(array));
3478 oop v = JNIHandles::resolve(value);
3479 if (a->is_within_bounds(index)) {
3480 if (v == NULL || v->is_a(ObjArrayKlass::cast(a->klass())->element_klass())) {
3481 a->obj_at_put(index, v);
3482 } else {
3483 THROW(vmSymbols::java_lang_ArrayStoreException());
3484 }
3485 } else {
3486 char buf[jintAsStringSize];
3487 sprintf(buf, "%d", index);
3488 THROW_MSG(vmSymbols::java_lang_ArrayIndexOutOfBoundsException(), buf);
3489 }
3490 JNI_END
3491
3492
3493 #ifndef USDT2
3494 #define DEFINE_NEWSCALARARRAY(Return,Allocator,Result) \
3495 \
3496 DT_RETURN_MARK_DECL(New##Result##Array, Return); \
3497 \
3498 JNI_ENTRY(Return, \
3499 jni_New##Result##Array(JNIEnv *env, jsize len)) \
3500 JNIWrapper("New" XSTR(Result) "Array"); \
3501 DTRACE_PROBE2(hotspot_jni, New##Result##Array__entry, env, len);\
3502 Return ret = NULL;\
3503 DT_RETURN_MARK(New##Result##Array, Return, (const Return&)ret);\
3504 \
3505 oop obj= oopFactory::Allocator(len, CHECK_0); \
3506 ret = (Return) JNIHandles::make_local(env, obj); \
3507 return ret;\
3508 JNI_END
3509
3510 DEFINE_NEWSCALARARRAY(jbooleanArray, new_boolArray, Boolean)
3511 DEFINE_NEWSCALARARRAY(jbyteArray, new_byteArray, Byte)
3512 DEFINE_NEWSCALARARRAY(jshortArray, new_shortArray, Short)
3513 DEFINE_NEWSCALARARRAY(jcharArray, new_charArray, Char)
3514 DEFINE_NEWSCALARARRAY(jintArray, new_intArray, Int)
3515 DEFINE_NEWSCALARARRAY(jlongArray, new_longArray, Long)
3516 DEFINE_NEWSCALARARRAY(jfloatArray, new_singleArray, Float)
3517 DEFINE_NEWSCALARARRAY(jdoubleArray, new_doubleArray, Double)
3518
3519 #else /* USDT2 */
3520
3521 #define DEFINE_NEWSCALARARRAY(Return,Allocator,Result \
3522 ,EntryProbe,ReturnProbe) \
3523 \
3524 DT_RETURN_MARK_DECL(New##Result##Array, Return \
3525 , ReturnProbe); \
3526 \
3527 JNI_ENTRY(Return, \
3528 jni_New##Result##Array(JNIEnv *env, jsize len)) \
3529 JNIWrapper("New" XSTR(Result) "Array"); \
3530 EntryProbe; \
3531 Return ret = NULL;\
3532 DT_RETURN_MARK(New##Result##Array, Return, (const Return&)ret);\
3533 \
3534 oop obj= oopFactory::Allocator(len, CHECK_0); \
3535 ret = (Return) JNIHandles::make_local(env, obj); \
3536 return ret;\
3537 JNI_END
3538
3539 DEFINE_NEWSCALARARRAY(jbooleanArray, new_boolArray, Boolean,
3540 HOTSPOT_JNI_NEWBOOLEANARRAY_ENTRY(env, len),
3541 HOTSPOT_JNI_NEWBOOLEANARRAY_RETURN(_ret_ref))
3542 DEFINE_NEWSCALARARRAY(jbyteArray, new_byteArray, Byte,
3543 HOTSPOT_JNI_NEWBYTEARRAY_ENTRY(env, len),
3544 HOTSPOT_JNI_NEWBYTEARRAY_RETURN(_ret_ref))
3545 DEFINE_NEWSCALARARRAY(jshortArray, new_shortArray, Short,
3546 HOTSPOT_JNI_NEWSHORTARRAY_ENTRY(env, len),
3547 HOTSPOT_JNI_NEWSHORTARRAY_RETURN(_ret_ref))
3548 DEFINE_NEWSCALARARRAY(jcharArray, new_charArray, Char,
3549 HOTSPOT_JNI_NEWCHARARRAY_ENTRY(env, len),
3550 HOTSPOT_JNI_NEWCHARARRAY_RETURN(_ret_ref))
3551 DEFINE_NEWSCALARARRAY(jintArray, new_intArray, Int,
3552 HOTSPOT_JNI_NEWINTARRAY_ENTRY(env, len),
3553 HOTSPOT_JNI_NEWINTARRAY_RETURN(_ret_ref))
3554 DEFINE_NEWSCALARARRAY(jlongArray, new_longArray, Long,
3555 HOTSPOT_JNI_NEWLONGARRAY_ENTRY(env, len),
3556 HOTSPOT_JNI_NEWLONGARRAY_RETURN(_ret_ref))
3557 DEFINE_NEWSCALARARRAY(jfloatArray, new_singleArray, Float,
3558 HOTSPOT_JNI_NEWFLOATARRAY_ENTRY(env, len),
3559 HOTSPOT_JNI_NEWFLOATARRAY_RETURN(_ret_ref))
3560 DEFINE_NEWSCALARARRAY(jdoubleArray, new_doubleArray, Double,
3561 HOTSPOT_JNI_NEWDOUBLEARRAY_ENTRY(env, len),
3562 HOTSPOT_JNI_NEWDOUBLEARRAY_RETURN(_ret_ref))
3563 #endif /* USDT2 */
3564
3565 // Return an address which will fault if the caller writes to it.
3566
3567 static char* get_bad_address() {
3568 static char* bad_address = NULL;
3569 if (bad_address == NULL) {
3570 size_t size = os::vm_allocation_granularity();
3571 bad_address = os::reserve_memory(size);
3572 if (bad_address != NULL) {
3573 os::protect_memory(bad_address, size, os::MEM_PROT_READ,
3574 /*is_committed*/false);
3575 }
3576 }
3577 return bad_address;
3578 }
3579
3580
3581 #ifndef USDT2
3582 #define DEFINE_GETSCALARARRAYELEMENTS(ElementTag,ElementType,Result, Tag) \
3583 \
3584 JNI_QUICK_ENTRY(ElementType*, \
3585 jni_Get##Result##ArrayElements(JNIEnv *env, ElementType##Array array, jboolean *isCopy)) \
3586 JNIWrapper("Get" XSTR(Result) "ArrayElements"); \
3587 DTRACE_PROBE3(hotspot_jni, Get##Result##ArrayElements__entry, env, array, isCopy);\
3588 /* allocate an chunk of memory in c land */ \
3589 typeArrayOop a = typeArrayOop(JNIHandles::resolve_non_null(array)); \
3590 ElementType* result; \
3591 int len = a->length(); \
3592 if (len == 0) { \
3593 /* Empty array: legal but useless, can't return NULL. \
3594 * Return a pointer to something useless. \
3595 * Avoid asserts in typeArrayOop. */ \
3596 result = (ElementType*)get_bad_address(); \
3597 } else { \
3598 /* JNI Specification states return NULL on OOM */ \
3599 result = NEW_C_HEAP_ARRAY_RETURN_NULL(ElementType, len, mtInternal); \
3600 if (result != NULL) { \
3601 /* copy the array to the c chunk */ \
3602 memcpy(result, a->Tag##_at_addr(0), sizeof(ElementType)*len); \
3603 if (isCopy) { \
3604 *isCopy = JNI_TRUE; \
3605 } \
3606 } \
3607 } \
3608 DTRACE_PROBE1(hotspot_jni, Get##Result##ArrayElements__return, result);\
3609 return result; \
3610 JNI_END
3611
3612 DEFINE_GETSCALARARRAYELEMENTS(T_BOOLEAN, jboolean, Boolean, bool)
3613 DEFINE_GETSCALARARRAYELEMENTS(T_BYTE, jbyte, Byte, byte)
3614 DEFINE_GETSCALARARRAYELEMENTS(T_SHORT, jshort, Short, short)
3615 DEFINE_GETSCALARARRAYELEMENTS(T_CHAR, jchar, Char, char)
3616 DEFINE_GETSCALARARRAYELEMENTS(T_INT, jint, Int, int)
3617 DEFINE_GETSCALARARRAYELEMENTS(T_LONG, jlong, Long, long)
3618 DEFINE_GETSCALARARRAYELEMENTS(T_FLOAT, jfloat, Float, float)
3619 DEFINE_GETSCALARARRAYELEMENTS(T_DOUBLE, jdouble, Double, double)
3620
3621 #else /* USDT2 */
3622
3623 #define DEFINE_GETSCALARARRAYELEMENTS(ElementTag,ElementType,Result, Tag \
3624 , EntryProbe, ReturnProbe) \
3625 \
3626 JNI_QUICK_ENTRY(ElementType*, \
3627 jni_Get##Result##ArrayElements(JNIEnv *env, ElementType##Array array, jboolean *isCopy)) \
3628 JNIWrapper("Get" XSTR(Result) "ArrayElements"); \
3629 EntryProbe; \
3630 /* allocate an chunk of memory in c land */ \
3631 typeArrayOop a = typeArrayOop(JNIHandles::resolve_non_null(array)); \
3632 ElementType* result; \
3633 int len = a->length(); \
3634 if (len == 0) { \
3635 /* Empty array: legal but useless, can't return NULL. \
3636 * Return a pointer to something useless. \
3637 * Avoid asserts in typeArrayOop. */ \
3638 result = (ElementType*)get_bad_address(); \
3639 } else { \
3640 /* JNI Specification states return NULL on OOM */ \
3641 result = NEW_C_HEAP_ARRAY_RETURN_NULL(ElementType, len, mtInternal); \
3642 if (result != NULL) { \
3643 /* copy the array to the c chunk */ \
3644 memcpy(result, a->Tag##_at_addr(0), sizeof(ElementType)*len); \
3645 if (isCopy) { \
3646 *isCopy = JNI_TRUE; \
3647 } \
3648 } \
3649 } \
3650 ReturnProbe; \
3651 return result; \
3652 JNI_END
3653
3654 DEFINE_GETSCALARARRAYELEMENTS(T_BOOLEAN, jboolean, Boolean, bool
3655 , HOTSPOT_JNI_GETBOOLEANARRAYELEMENTS_ENTRY(env, array, (uintptr_t *) isCopy),
3656 HOTSPOT_JNI_GETBOOLEANARRAYELEMENTS_RETURN((uintptr_t*)result))
3657 DEFINE_GETSCALARARRAYELEMENTS(T_BYTE, jbyte, Byte, byte
3658 , HOTSPOT_JNI_GETBYTEARRAYELEMENTS_ENTRY(env, array, (uintptr_t *) isCopy),
3659 HOTSPOT_JNI_GETBYTEARRAYELEMENTS_RETURN((char*)result))
3660 DEFINE_GETSCALARARRAYELEMENTS(T_SHORT, jshort, Short, short
3661 , HOTSPOT_JNI_GETSHORTARRAYELEMENTS_ENTRY(env, (uint16_t*) array, (uintptr_t *) isCopy),
3662 HOTSPOT_JNI_GETSHORTARRAYELEMENTS_RETURN((uint16_t*)result))
3663 DEFINE_GETSCALARARRAYELEMENTS(T_CHAR, jchar, Char, char
3664 , HOTSPOT_JNI_GETCHARARRAYELEMENTS_ENTRY(env, (uint16_t*) array, (uintptr_t *) isCopy),
3665 HOTSPOT_JNI_GETCHARARRAYELEMENTS_RETURN(result))
3666 DEFINE_GETSCALARARRAYELEMENTS(T_INT, jint, Int, int
3667 , HOTSPOT_JNI_GETINTARRAYELEMENTS_ENTRY(env, array, (uintptr_t *) isCopy),
3668 HOTSPOT_JNI_GETINTARRAYELEMENTS_RETURN((uint32_t*)result))
3669 DEFINE_GETSCALARARRAYELEMENTS(T_LONG, jlong, Long, long
3670 , HOTSPOT_JNI_GETLONGARRAYELEMENTS_ENTRY(env, array, (uintptr_t *) isCopy),
3671 HOTSPOT_JNI_GETLONGARRAYELEMENTS_RETURN(((uintptr_t*)result)))
3672 // Float and double probes don't return value because dtrace doesn't currently support it
3673 DEFINE_GETSCALARARRAYELEMENTS(T_FLOAT, jfloat, Float, float
3674 , HOTSPOT_JNI_GETFLOATARRAYELEMENTS_ENTRY(env, array, (uintptr_t *) isCopy),
3675 HOTSPOT_JNI_GETFLOATARRAYELEMENTS_RETURN(result))
3676 DEFINE_GETSCALARARRAYELEMENTS(T_DOUBLE, jdouble, Double, double
3677 , HOTSPOT_JNI_GETDOUBLEARRAYELEMENTS_ENTRY(env, array, (uintptr_t *) isCopy),
3678 HOTSPOT_JNI_GETDOUBLEARRAYELEMENTS_RETURN(result))
3679 #endif /* USDT2 */
3680
3681 #ifndef USDT2
3682 #define DEFINE_RELEASESCALARARRAYELEMENTS(ElementTag,ElementType,Result,Tag) \
3683 \
3684 JNI_QUICK_ENTRY(void, \
3685 jni_Release##Result##ArrayElements(JNIEnv *env, ElementType##Array array, \
3686 ElementType *buf, jint mode)) \
3687 JNIWrapper("Release" XSTR(Result) "ArrayElements"); \
3688 DTRACE_PROBE4(hotspot_jni, Release##Result##ArrayElements__entry, env, array, buf, mode);\
3689 typeArrayOop a = typeArrayOop(JNIHandles::resolve_non_null(array)); \
3690 int len = a->length(); \
3691 if (len != 0) { /* Empty array: nothing to free or copy. */ \
3692 if ((mode == 0) || (mode == JNI_COMMIT)) { \
3693 memcpy(a->Tag##_at_addr(0), buf, sizeof(ElementType)*len); \
3694 } \
3695 if ((mode == 0) || (mode == JNI_ABORT)) { \
3696 FreeHeap(buf); \
3697 } \
3698 } \
3699 DTRACE_PROBE(hotspot_jni, Release##Result##ArrayElements__return);\
3700 JNI_END
3701
3702 DEFINE_RELEASESCALARARRAYELEMENTS(T_BOOLEAN, jboolean, Boolean, bool)
3703 DEFINE_RELEASESCALARARRAYELEMENTS(T_BYTE, jbyte, Byte, byte)
3704 DEFINE_RELEASESCALARARRAYELEMENTS(T_SHORT, jshort, Short, short)
3705 DEFINE_RELEASESCALARARRAYELEMENTS(T_CHAR, jchar, Char, char)
3706 DEFINE_RELEASESCALARARRAYELEMENTS(T_INT, jint, Int, int)
3707 DEFINE_RELEASESCALARARRAYELEMENTS(T_LONG, jlong, Long, long)
3708 DEFINE_RELEASESCALARARRAYELEMENTS(T_FLOAT, jfloat, Float, float)
3709 DEFINE_RELEASESCALARARRAYELEMENTS(T_DOUBLE, jdouble, Double, double)
3710
3711 #else /* USDT2 */
3712
3713 #define DEFINE_RELEASESCALARARRAYELEMENTS(ElementTag,ElementType,Result,Tag \
3714 , EntryProbe, ReturnProbe);\
3715 \
3716 JNI_QUICK_ENTRY(void, \
3717 jni_Release##Result##ArrayElements(JNIEnv *env, ElementType##Array array, \
3718 ElementType *buf, jint mode)) \
3719 JNIWrapper("Release" XSTR(Result) "ArrayElements"); \
3720 EntryProbe; \
3721 typeArrayOop a = typeArrayOop(JNIHandles::resolve_non_null(array)); \
3722 int len = a->length(); \
3723 if (len != 0) { /* Empty array: nothing to free or copy. */ \
3724 if ((mode == 0) || (mode == JNI_COMMIT)) { \
3725 memcpy(a->Tag##_at_addr(0), buf, sizeof(ElementType)*len); \
3726 } \
3727 if ((mode == 0) || (mode == JNI_ABORT)) { \
3728 FreeHeap(buf); \
3729 } \
3730 } \
3731 ReturnProbe; \
3732 JNI_END
3733
3734 DEFINE_RELEASESCALARARRAYELEMENTS(T_BOOLEAN, jboolean, Boolean, bool
3735 , HOTSPOT_JNI_RELEASEBOOLEANARRAYELEMENTS_ENTRY(env, array, (uintptr_t *) buf, mode),
3736 HOTSPOT_JNI_RELEASEBOOLEANARRAYELEMENTS_RETURN())
3737 DEFINE_RELEASESCALARARRAYELEMENTS(T_BYTE, jbyte, Byte, byte
3738 , HOTSPOT_JNI_RELEASEBYTEARRAYELEMENTS_ENTRY(env, array, (char *) buf, mode),
3739 HOTSPOT_JNI_RELEASEBYTEARRAYELEMENTS_RETURN())
3740 DEFINE_RELEASESCALARARRAYELEMENTS(T_SHORT, jshort, Short, short
3741 , HOTSPOT_JNI_RELEASESHORTARRAYELEMENTS_ENTRY(env, array, (uint16_t *) buf, mode),
3742 HOTSPOT_JNI_RELEASESHORTARRAYELEMENTS_RETURN())
3743 DEFINE_RELEASESCALARARRAYELEMENTS(T_CHAR, jchar, Char, char
3744 , HOTSPOT_JNI_RELEASECHARARRAYELEMENTS_ENTRY(env, array, (uint16_t *) buf, mode),
3745 HOTSPOT_JNI_RELEASECHARARRAYELEMENTS_RETURN())
3746 DEFINE_RELEASESCALARARRAYELEMENTS(T_INT, jint, Int, int
3747 , HOTSPOT_JNI_RELEASEINTARRAYELEMENTS_ENTRY(env, array, (uint32_t *) buf, mode),
3748 HOTSPOT_JNI_RELEASEINTARRAYELEMENTS_RETURN())
3749 DEFINE_RELEASESCALARARRAYELEMENTS(T_LONG, jlong, Long, long
3750 , HOTSPOT_JNI_RELEASELONGARRAYELEMENTS_ENTRY(env, array, (uintptr_t *) buf, mode),
3751 HOTSPOT_JNI_RELEASELONGARRAYELEMENTS_RETURN())
3752 DEFINE_RELEASESCALARARRAYELEMENTS(T_FLOAT, jfloat, Float, float
3753 , HOTSPOT_JNI_RELEASEFLOATARRAYELEMENTS_ENTRY(env, array, (float *) buf, mode),
3754 HOTSPOT_JNI_RELEASEFLOATARRAYELEMENTS_RETURN())
3755 DEFINE_RELEASESCALARARRAYELEMENTS(T_DOUBLE, jdouble, Double, double
3756 , HOTSPOT_JNI_RELEASEDOUBLEARRAYELEMENTS_ENTRY(env, array, (double *) buf, mode),
3757 HOTSPOT_JNI_RELEASEDOUBLEARRAYELEMENTS_RETURN())
3758 #endif /* USDT2 */
3759
3760 #ifndef USDT2
3761 #define DEFINE_GETSCALARARRAYREGION(ElementTag,ElementType,Result, Tag) \
3762 DT_VOID_RETURN_MARK_DECL(Get##Result##ArrayRegion);\
3763 \
3764 JNI_ENTRY(void, \
3765 jni_Get##Result##ArrayRegion(JNIEnv *env, ElementType##Array array, jsize start, \
3766 jsize len, ElementType *buf)) \
3767 JNIWrapper("Get" XSTR(Result) "ArrayRegion"); \
3768 DTRACE_PROBE5(hotspot_jni, Get##Result##ArrayRegion__entry, env, array, start, len, buf);\
3769 DT_VOID_RETURN_MARK(Get##Result##ArrayRegion); \
3770 typeArrayOop src = typeArrayOop(JNIHandles::resolve_non_null(array)); \
3771 if (start < 0 || len < 0 || ((unsigned int)start + (unsigned int)len > (unsigned int)src->length())) { \
3772 THROW(vmSymbols::java_lang_ArrayIndexOutOfBoundsException()); \
3773 } else { \
3774 if (len > 0) { \
3775 int sc = TypeArrayKlass::cast(src->klass())->log2_element_size(); \
3776 memcpy((u_char*) buf, \
3777 (u_char*) src->Tag##_at_addr(start), \
3778 len << sc); \
3779 } \
3780 } \
3781 JNI_END
3782
3783 DEFINE_GETSCALARARRAYREGION(T_BOOLEAN, jboolean,Boolean, bool)
3784 DEFINE_GETSCALARARRAYREGION(T_BYTE, jbyte, Byte, byte)
3785 DEFINE_GETSCALARARRAYREGION(T_SHORT, jshort, Short, short)
3786 DEFINE_GETSCALARARRAYREGION(T_CHAR, jchar, Char, char)
3787 DEFINE_GETSCALARARRAYREGION(T_INT, jint, Int, int)
3788 DEFINE_GETSCALARARRAYREGION(T_LONG, jlong, Long, long)
3789 DEFINE_GETSCALARARRAYREGION(T_FLOAT, jfloat, Float, float)
3790 DEFINE_GETSCALARARRAYREGION(T_DOUBLE, jdouble, Double, double)
3791
3792 #else /* USDT2 */
3793
3794 #define DEFINE_GETSCALARARRAYREGION(ElementTag,ElementType,Result, Tag \
3795 , EntryProbe, ReturnProbe); \
3796 DT_VOID_RETURN_MARK_DECL(Get##Result##ArrayRegion \
3797 , ReturnProbe); \
3798 \
3799 JNI_ENTRY(void, \
3800 jni_Get##Result##ArrayRegion(JNIEnv *env, ElementType##Array array, jsize start, \
3801 jsize len, ElementType *buf)) \
3802 JNIWrapper("Get" XSTR(Result) "ArrayRegion"); \
3803 EntryProbe; \
3804 DT_VOID_RETURN_MARK(Get##Result##ArrayRegion); \
3805 typeArrayOop src = typeArrayOop(JNIHandles::resolve_non_null(array)); \
3806 if (start < 0 || len < 0 || ((unsigned int)start + (unsigned int)len > (unsigned int)src->length())) { \
3807 THROW(vmSymbols::java_lang_ArrayIndexOutOfBoundsException()); \
3808 } else { \
3809 if (len > 0) { \
3810 int sc = TypeArrayKlass::cast(src->klass())->log2_element_size(); \
3811 memcpy((u_char*) buf, \
3812 (u_char*) src->Tag##_at_addr(start), \
3813 len << sc); \
3814 } \
3815 } \
3816 JNI_END
3817
3818 DEFINE_GETSCALARARRAYREGION(T_BOOLEAN, jboolean,Boolean, bool
3819 , HOTSPOT_JNI_GETBOOLEANARRAYREGION_ENTRY(env, array, start, len, (uintptr_t *) buf),
3820 HOTSPOT_JNI_GETBOOLEANARRAYREGION_RETURN());
3821 DEFINE_GETSCALARARRAYREGION(T_BYTE, jbyte, Byte, byte
3822 , HOTSPOT_JNI_GETBYTEARRAYREGION_ENTRY(env, array, start, len, (char *) buf),
3823 HOTSPOT_JNI_GETBYTEARRAYREGION_RETURN());
3824 DEFINE_GETSCALARARRAYREGION(T_SHORT, jshort, Short, short
3825 , HOTSPOT_JNI_GETSHORTARRAYREGION_ENTRY(env, array, start, len, (uint16_t *) buf),
3826 HOTSPOT_JNI_GETSHORTARRAYREGION_RETURN());
3827 DEFINE_GETSCALARARRAYREGION(T_CHAR, jchar, Char, char
3828 , HOTSPOT_JNI_GETCHARARRAYREGION_ENTRY(env, array, start, len, (uint16_t*) buf),
3829 HOTSPOT_JNI_GETCHARARRAYREGION_RETURN());
3830 DEFINE_GETSCALARARRAYREGION(T_INT, jint, Int, int
3831 , HOTSPOT_JNI_GETINTARRAYREGION_ENTRY(env, array, start, len, (uint32_t*) buf),
3832 HOTSPOT_JNI_GETINTARRAYREGION_RETURN());
3833 DEFINE_GETSCALARARRAYREGION(T_LONG, jlong, Long, long
3834 , HOTSPOT_JNI_GETLONGARRAYREGION_ENTRY(env, array, start, len, (uintptr_t *) buf),
3835 HOTSPOT_JNI_GETLONGARRAYREGION_RETURN());
3836 DEFINE_GETSCALARARRAYREGION(T_FLOAT, jfloat, Float, float
3837 , HOTSPOT_JNI_GETFLOATARRAYREGION_ENTRY(env, array, start, len, (float *) buf),
3838 HOTSPOT_JNI_GETFLOATARRAYREGION_RETURN());
3839 DEFINE_GETSCALARARRAYREGION(T_DOUBLE, jdouble, Double, double
3840 , HOTSPOT_JNI_GETDOUBLEARRAYREGION_ENTRY(env, array, start, len, (double *) buf),
3841 HOTSPOT_JNI_GETDOUBLEARRAYREGION_RETURN());
3842 #endif /* USDT2 */
3843
3844 #ifndef USDT2
3845 #define DEFINE_SETSCALARARRAYREGION(ElementTag,ElementType,Result, Tag) \
3846 DT_VOID_RETURN_MARK_DECL(Set##Result##ArrayRegion);\
3847 \
3848 JNI_ENTRY(void, \
3849 jni_Set##Result##ArrayRegion(JNIEnv *env, ElementType##Array array, jsize start, \
3850 jsize len, const ElementType *buf)) \
3851 JNIWrapper("Set" XSTR(Result) "ArrayRegion"); \
3852 DTRACE_PROBE5(hotspot_jni, Set##Result##ArrayRegion__entry, env, array, start, len, buf);\
3853 DT_VOID_RETURN_MARK(Set##Result##ArrayRegion); \
3854 typeArrayOop dst = typeArrayOop(JNIHandles::resolve_non_null(array)); \
3855 if (start < 0 || len < 0 || ((unsigned int)start + (unsigned int)len > (unsigned int)dst->length())) { \
3856 THROW(vmSymbols::java_lang_ArrayIndexOutOfBoundsException()); \
3857 } else { \
3858 if (len > 0) { \
3859 int sc = TypeArrayKlass::cast(dst->klass())->log2_element_size(); \
3860 memcpy((u_char*) dst->Tag##_at_addr(start), \
3861 (u_char*) buf, \
3862 len << sc); \
3863 } \
3864 } \
3865 JNI_END
3866
3867 DEFINE_SETSCALARARRAYREGION(T_BOOLEAN, jboolean, Boolean, bool)
3868 DEFINE_SETSCALARARRAYREGION(T_BYTE, jbyte, Byte, byte)
3869 DEFINE_SETSCALARARRAYREGION(T_SHORT, jshort, Short, short)
3870 DEFINE_SETSCALARARRAYREGION(T_CHAR, jchar, Char, char)
3871 DEFINE_SETSCALARARRAYREGION(T_INT, jint, Int, int)
3872 DEFINE_SETSCALARARRAYREGION(T_LONG, jlong, Long, long)
3873 DEFINE_SETSCALARARRAYREGION(T_FLOAT, jfloat, Float, float)
3874 DEFINE_SETSCALARARRAYREGION(T_DOUBLE, jdouble, Double, double)
3875
3876 #else /* USDT2 */
3877
3878 #define DEFINE_SETSCALARARRAYREGION(ElementTag,ElementType,Result, Tag \
3879 , EntryProbe, ReturnProbe); \
3880 DT_VOID_RETURN_MARK_DECL(Set##Result##ArrayRegion \
3881 ,ReturnProbe); \
3882 \
3883 JNI_ENTRY(void, \
3884 jni_Set##Result##ArrayRegion(JNIEnv *env, ElementType##Array array, jsize start, \
3885 jsize len, const ElementType *buf)) \
3886 JNIWrapper("Set" XSTR(Result) "ArrayRegion"); \
3887 EntryProbe; \
3888 DT_VOID_RETURN_MARK(Set##Result##ArrayRegion); \
3889 typeArrayOop dst = typeArrayOop(JNIHandles::resolve_non_null(array)); \
3890 if (start < 0 || len < 0 || ((unsigned int)start + (unsigned int)len > (unsigned int)dst->length())) { \
3891 THROW(vmSymbols::java_lang_ArrayIndexOutOfBoundsException()); \
3892 } else { \
3893 if (len > 0) { \
3894 int sc = TypeArrayKlass::cast(dst->klass())->log2_element_size(); \
3895 memcpy((u_char*) dst->Tag##_at_addr(start), \
3896 (u_char*) buf, \
3897 len << sc); \
3898 } \
3899 } \
3900 JNI_END
3901
3902 DEFINE_SETSCALARARRAYREGION(T_BOOLEAN, jboolean, Boolean, bool
3903 , HOTSPOT_JNI_SETBOOLEANARRAYREGION_ENTRY(env, array, start, len, (uintptr_t *)buf),
3904 HOTSPOT_JNI_SETBOOLEANARRAYREGION_RETURN())
3905 DEFINE_SETSCALARARRAYREGION(T_BYTE, jbyte, Byte, byte
3906 , HOTSPOT_JNI_SETBYTEARRAYREGION_ENTRY(env, array, start, len, (char *) buf),
3907 HOTSPOT_JNI_SETBYTEARRAYREGION_RETURN())
3908 DEFINE_SETSCALARARRAYREGION(T_SHORT, jshort, Short, short
3909 , HOTSPOT_JNI_SETSHORTARRAYREGION_ENTRY(env, array, start, len, (uint16_t *) buf),
3910 HOTSPOT_JNI_SETSHORTARRAYREGION_RETURN())
3911 DEFINE_SETSCALARARRAYREGION(T_CHAR, jchar, Char, char
3912 , HOTSPOT_JNI_SETCHARARRAYREGION_ENTRY(env, array, start, len, (uint16_t *) buf),
3913 HOTSPOT_JNI_SETCHARARRAYREGION_RETURN())
3914 DEFINE_SETSCALARARRAYREGION(T_INT, jint, Int, int
3915 , HOTSPOT_JNI_SETINTARRAYREGION_ENTRY(env, array, start, len, (uint32_t *) buf),
3916 HOTSPOT_JNI_SETINTARRAYREGION_RETURN())
3917 DEFINE_SETSCALARARRAYREGION(T_LONG, jlong, Long, long
3918 , HOTSPOT_JNI_SETLONGARRAYREGION_ENTRY(env, array, start, len, (uintptr_t *) buf),
3919 HOTSPOT_JNI_SETLONGARRAYREGION_RETURN())
3920 DEFINE_SETSCALARARRAYREGION(T_FLOAT, jfloat, Float, float
3921 , HOTSPOT_JNI_SETFLOATARRAYREGION_ENTRY(env, array, start, len, (float *) buf),
3922 HOTSPOT_JNI_SETFLOATARRAYREGION_RETURN())
3923 DEFINE_SETSCALARARRAYREGION(T_DOUBLE, jdouble, Double, double
3924 , HOTSPOT_JNI_SETDOUBLEARRAYREGION_ENTRY(env, array, start, len, (double *) buf),
3925 HOTSPOT_JNI_SETDOUBLEARRAYREGION_RETURN())
3926 #endif /* USDT2 */
3927
3928
3929 //
3930 // Interception of natives
3931 //
3932
3933 // The RegisterNatives call being attempted tried to register with a method that
3934 // is not native. Ask JVM TI what prefixes have been specified. Then check
3935 // to see if the native method is now wrapped with the prefixes. See the
3936 // SetNativeMethodPrefix(es) functions in the JVM TI Spec for details.
3937 static Method* find_prefixed_native(KlassHandle k,
3938 Symbol* name, Symbol* signature, TRAPS) {
3939 #if INCLUDE_JVMTI
3940 ResourceMark rm(THREAD);
3941 Method* method;
3942 int name_len = name->utf8_length();
3943 char* name_str = name->as_utf8();
3944 int prefix_count;
3945 char** prefixes = JvmtiExport::get_all_native_method_prefixes(&prefix_count);
3946 for (int i = 0; i < prefix_count; i++) {
3947 char* prefix = prefixes[i];
3948 int prefix_len = (int)strlen(prefix);
3949
3950 // try adding this prefix to the method name and see if it matches another method name
3951 int trial_len = name_len + prefix_len;
3952 char* trial_name_str = NEW_RESOURCE_ARRAY(char, trial_len + 1);
3953 strcpy(trial_name_str, prefix);
3954 strcat(trial_name_str, name_str);
3955 TempNewSymbol trial_name = SymbolTable::probe(trial_name_str, trial_len);
3956 if (trial_name == NULL) {
3957 continue; // no such symbol, so this prefix wasn't used, try the next prefix
3958 }
3959 method = k()->lookup_method(trial_name, signature);
3960 if (method == NULL) {
3961 continue; // signature doesn't match, try the next prefix
3962 }
3963 if (method->is_native()) {
3964 method->set_is_prefixed_native();
3965 return method; // wahoo, we found a prefixed version of the method, return it
3966 }
3967 // found as non-native, so prefix is good, add it, probably just need more prefixes
3968 name_len = trial_len;
3969 name_str = trial_name_str;
3970 }
3971 #endif // INCLUDE_JVMTI
3972 return NULL; // not found
3973 }
3974
3975 static bool register_native(KlassHandle k, Symbol* name, Symbol* signature, address entry, TRAPS) {
3976 Method* method = k()->lookup_method(name, signature);
3977 if (method == NULL) {
3978 ResourceMark rm;
3979 stringStream st;
3980 st.print("Method %s name or signature does not match",
3981 Method::name_and_sig_as_C_string(k(), name, signature));
3982 THROW_MSG_(vmSymbols::java_lang_NoSuchMethodError(), st.as_string(), false);
3983 }
3984 if (!method->is_native()) {
3985 // trying to register to a non-native method, see if a JVM TI agent has added prefix(es)
3986 method = find_prefixed_native(k, name, signature, THREAD);
3987 if (method == NULL) {
3988 ResourceMark rm;
3989 stringStream st;
3990 st.print("Method %s is not declared as native",
3991 Method::name_and_sig_as_C_string(k(), name, signature));
3992 THROW_MSG_(vmSymbols::java_lang_NoSuchMethodError(), st.as_string(), false);
3993 }
3994 }
3995
3996 if (entry != NULL) {
3997 method->set_native_function(entry,
3998 Method::native_bind_event_is_interesting);
3999 } else {
4000 method->clear_native_function();
4001 }
4002 if (PrintJNIResolving) {
4003 ResourceMark rm(THREAD);
4004 tty->print_cr("[Registering JNI native method %s.%s]",
4005 method->method_holder()->external_name(),
4006 method->name()->as_C_string());
4007 }
4008 return true;
4009 }
4010
4011 #ifndef USDT2
4012 DT_RETURN_MARK_DECL(RegisterNatives, jint);
4013 #else /* USDT2 */
4014 DT_RETURN_MARK_DECL(RegisterNatives, jint
4015 , HOTSPOT_JNI_REGISTERNATIVES_RETURN(_ret_ref));
4016 #endif /* USDT2 */
4017
4018 JNI_ENTRY(jint, jni_RegisterNatives(JNIEnv *env, jclass clazz,
4019 const JNINativeMethod *methods,
4020 jint nMethods))
4021 JNIWrapper("RegisterNatives");
4022 #ifndef USDT2
4023 DTRACE_PROBE4(hotspot_jni, RegisterNatives__entry, env, clazz, methods, nMethods);
4024 #else /* USDT2 */
4025 HOTSPOT_JNI_REGISTERNATIVES_ENTRY(
4026 env, clazz, (void *) methods, nMethods);
4027 #endif /* USDT2 */
4028 jint ret = 0;
4029 DT_RETURN_MARK(RegisterNatives, jint, (const jint&)ret);
4030
4031 KlassHandle h_k(thread, java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz)));
4032
4033 for (int index = 0; index < nMethods; index++) {
4034 const char* meth_name = methods[index].name;
4035 const char* meth_sig = methods[index].signature;
4036 int meth_name_len = (int)strlen(meth_name);
4037
4038 // The class should have been loaded (we have an instance of the class
4039 // passed in) so the method and signature should already be in the symbol
4040 // table. If they're not there, the method doesn't exist.
4041 TempNewSymbol name = SymbolTable::probe(meth_name, meth_name_len);
4042 TempNewSymbol signature = SymbolTable::probe(meth_sig, (int)strlen(meth_sig));
4043
4044 if (name == NULL || signature == NULL) {
4045 ResourceMark rm;
4046 stringStream st;
4047 st.print("Method %s.%s%s not found", h_k()->external_name(), meth_name, meth_sig);
4048 // Must return negative value on failure
4049 THROW_MSG_(vmSymbols::java_lang_NoSuchMethodError(), st.as_string(), -1);
4050 }
4051
4052 bool res = register_native(h_k, name, signature,
4053 (address) methods[index].fnPtr, THREAD);
4054 if (!res) {
4055 ret = -1;
4056 break;
4057 }
4058 }
4059 return ret;
4060 JNI_END
4061
4062
4063 JNI_ENTRY(jint, jni_UnregisterNatives(JNIEnv *env, jclass clazz))
4064 JNIWrapper("UnregisterNatives");
4065 #ifndef USDT2
4066 DTRACE_PROBE2(hotspot_jni, UnregisterNatives__entry, env, clazz);
4067 #else /* USDT2 */
4068 HOTSPOT_JNI_UNREGISTERNATIVES_ENTRY(
4069 env, clazz);
4070 #endif /* USDT2 */
4071 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz));
4072 //%note jni_2
4073 if (k->oop_is_instance()) {
4074 for (int index = 0; index < InstanceKlass::cast(k)->methods()->length(); index++) {
4075 Method* m = InstanceKlass::cast(k)->methods()->at(index);
4076 if (m->is_native()) {
4077 m->clear_native_function();
4078 m->set_signature_handler(NULL);
4079 }
4080 }
4081 }
4082 #ifndef USDT2
4083 DTRACE_PROBE1(hotspot_jni, UnregisterNatives__return, 0);
4084 #else /* USDT2 */
4085 HOTSPOT_JNI_UNREGISTERNATIVES_RETURN(
4086 0);
4087 #endif /* USDT2 */
4088 return 0;
4089 JNI_END
4090
4091 //
4092 // Monitor functions
4093 //
4094
4095 #ifndef USDT2
4096 DT_RETURN_MARK_DECL(MonitorEnter, jint);
4097 #else /* USDT2 */
4098 DT_RETURN_MARK_DECL(MonitorEnter, jint
4099 , HOTSPOT_JNI_MONITORENTER_RETURN(_ret_ref));
4100 #endif /* USDT2 */
4101
4102 JNI_ENTRY(jint, jni_MonitorEnter(JNIEnv *env, jobject jobj))
4103 #ifndef USDT2
4104 DTRACE_PROBE2(hotspot_jni, MonitorEnter__entry, env, jobj);
4105 #else /* USDT2 */
4106 HOTSPOT_JNI_MONITORENTER_ENTRY(
4107 env, jobj);
4108 #endif /* USDT2 */
4109 jint ret = JNI_ERR;
4110 DT_RETURN_MARK(MonitorEnter, jint, (const jint&)ret);
4111
4112 // If the object is null, we can't do anything with it
4113 if (jobj == NULL) {
4114 THROW_(vmSymbols::java_lang_NullPointerException(), JNI_ERR);
4115 }
4116
4117 Handle obj(thread, JNIHandles::resolve_non_null(jobj));
4118 ObjectSynchronizer::jni_enter(obj, CHECK_(JNI_ERR));
4119 ret = JNI_OK;
4120 return ret;
4121 JNI_END
4122
4123 #ifndef USDT2
4124 DT_RETURN_MARK_DECL(MonitorExit, jint);
4125 #else /* USDT2 */
4126 DT_RETURN_MARK_DECL(MonitorExit, jint
4127 , HOTSPOT_JNI_MONITOREXIT_RETURN(_ret_ref));
4128 #endif /* USDT2 */
4129
4130 JNI_ENTRY(jint, jni_MonitorExit(JNIEnv *env, jobject jobj))
4131 #ifndef USDT2
4132 DTRACE_PROBE2(hotspot_jni, MonitorExit__entry, env, jobj);
4133 #else /* USDT2 */
4134 HOTSPOT_JNI_MONITOREXIT_ENTRY(
4135 env, jobj);
4136 #endif /* USDT2 */
4137 jint ret = JNI_ERR;
4138 DT_RETURN_MARK(MonitorExit, jint, (const jint&)ret);
4139
4140 // Don't do anything with a null object
4141 if (jobj == NULL) {
4142 THROW_(vmSymbols::java_lang_NullPointerException(), JNI_ERR);
4143 }
4144
4145 Handle obj(THREAD, JNIHandles::resolve_non_null(jobj));
4146 ObjectSynchronizer::jni_exit(obj(), CHECK_(JNI_ERR));
4147
4148 ret = JNI_OK;
4149 return ret;
4150 JNI_END
4151
4152 //
4153 // Extensions
4154 //
4155
4156 #ifndef USDT2
4157 DT_VOID_RETURN_MARK_DECL(GetStringRegion);
4158 #else /* USDT2 */
4159 DT_VOID_RETURN_MARK_DECL(GetStringRegion
4160 , HOTSPOT_JNI_GETSTRINGREGION_RETURN());
4161 #endif /* USDT2 */
4162
4163 JNI_ENTRY(void, jni_GetStringRegion(JNIEnv *env, jstring string, jsize start, jsize len, jchar *buf))
4164 JNIWrapper("GetStringRegion");
4165 #ifndef USDT2
4166 DTRACE_PROBE5(hotspot_jni, GetStringRegion__entry, env, string, start, len, buf);
4167 #else /* USDT2 */
4168 HOTSPOT_JNI_GETSTRINGREGION_ENTRY(
4169 env, string, start, len, buf);
4170 #endif /* USDT2 */
4171 DT_VOID_RETURN_MARK(GetStringRegion);
4172 oop s = JNIHandles::resolve_non_null(string);
4173 int s_len = java_lang_String::length(s);
4174 if (start < 0 || len < 0 || start + len > s_len) {
4175 THROW(vmSymbols::java_lang_StringIndexOutOfBoundsException());
4176 } else {
4177 if (len > 0) {
4178 int s_offset = java_lang_String::offset(s);
4179 typeArrayOop s_value = java_lang_String::value(s);
4180 memcpy(buf, s_value->char_at_addr(s_offset+start), sizeof(jchar)*len);
4181 }
4182 }
4183 JNI_END
4184
4185 #ifndef USDT2
4186 DT_VOID_RETURN_MARK_DECL(GetStringUTFRegion);
4187 #else /* USDT2 */
4188 DT_VOID_RETURN_MARK_DECL(GetStringUTFRegion
4189 , HOTSPOT_JNI_GETSTRINGUTFREGION_RETURN());
4190 #endif /* USDT2 */
4191
4192 JNI_ENTRY(void, jni_GetStringUTFRegion(JNIEnv *env, jstring string, jsize start, jsize len, char *buf))
4193 JNIWrapper("GetStringUTFRegion");
4194 #ifndef USDT2
4195 DTRACE_PROBE5(hotspot_jni, GetStringUTFRegion__entry, env, string, start, len, buf);
4196 #else /* USDT2 */
4197 HOTSPOT_JNI_GETSTRINGUTFREGION_ENTRY(
4198 env, string, start, len, buf);
4199 #endif /* USDT2 */
4200 DT_VOID_RETURN_MARK(GetStringUTFRegion);
4201 oop s = JNIHandles::resolve_non_null(string);
4202 int s_len = java_lang_String::length(s);
4203 if (start < 0 || len < 0 || start + len > s_len) {
4204 THROW(vmSymbols::java_lang_StringIndexOutOfBoundsException());
4205 } else {
4206 //%note jni_7
4207 if (len > 0) {
4208 ResourceMark rm(THREAD);
4209 char *utf_region = java_lang_String::as_utf8_string(s, start, len);
4210 int utf_len = (int)strlen(utf_region);
4211 memcpy(buf, utf_region, utf_len);
4212 buf[utf_len] = 0;
4213 } else {
4214 // JDK null-terminates the buffer even in len is zero
4215 if (buf != NULL) {
4216 buf[0] = 0;
4217 }
4218 }
4219 }
4220 JNI_END
4221
4222
4223 JNI_ENTRY(void*, jni_GetPrimitiveArrayCritical(JNIEnv *env, jarray array, jboolean *isCopy))
4224 JNIWrapper("GetPrimitiveArrayCritical");
4225 #ifndef USDT2
4226 DTRACE_PROBE3(hotspot_jni, GetPrimitiveArrayCritical__entry, env, array, isCopy);
4227 #else /* USDT2 */
4228 HOTSPOT_JNI_GETPRIMITIVEARRAYCRITICAL_ENTRY(
4229 env, array, (uintptr_t *) isCopy);
4230 #endif /* USDT2 */
4231 GC_locker::lock_critical(thread);
4232 if (isCopy != NULL) {
4233 *isCopy = JNI_FALSE;
4234 }
4235 oop a = JNIHandles::resolve_non_null(array);
4236 assert(a->is_array(), "just checking");
4237 BasicType type;
4238 if (a->is_objArray()) {
4239 type = T_OBJECT;
4240 } else {
4241 type = TypeArrayKlass::cast(a->klass())->element_type();
4242 }
4243 void* ret = arrayOop(a)->base(type);
4244 #ifndef USDT2
4245 DTRACE_PROBE1(hotspot_jni, GetPrimitiveArrayCritical__return, ret);
4246 #else /* USDT2 */
4247 HOTSPOT_JNI_GETPRIMITIVEARRAYCRITICAL_RETURN(
4248 ret);
4249 #endif /* USDT2 */
4250 return ret;
4251 JNI_END
4252
4253
4254 JNI_ENTRY(void, jni_ReleasePrimitiveArrayCritical(JNIEnv *env, jarray array, void *carray, jint mode))
4255 JNIWrapper("ReleasePrimitiveArrayCritical");
4256 #ifndef USDT2
4257 DTRACE_PROBE4(hotspot_jni, ReleasePrimitiveArrayCritical__entry, env, array, carray, mode);
4258 #else /* USDT2 */
4259 HOTSPOT_JNI_RELEASEPRIMITIVEARRAYCRITICAL_ENTRY(
4260 env, array, carray, mode);
4261 #endif /* USDT2 */
4262 // The array, carray and mode arguments are ignored
4263 GC_locker::unlock_critical(thread);
4264 #ifndef USDT2
4265 DTRACE_PROBE(hotspot_jni, ReleasePrimitiveArrayCritical__return);
4266 #else /* USDT2 */
4267 HOTSPOT_JNI_RELEASEPRIMITIVEARRAYCRITICAL_RETURN(
4268 );
4269 #endif /* USDT2 */
4270 JNI_END
4271
4272
4273 JNI_ENTRY(const jchar*, jni_GetStringCritical(JNIEnv *env, jstring string, jboolean *isCopy))
4274 JNIWrapper("GetStringCritical");
4275 #ifndef USDT2
4276 DTRACE_PROBE3(hotspot_jni, GetStringCritical__entry, env, string, isCopy);
4277 #else /* USDT2 */
4278 HOTSPOT_JNI_GETSTRINGCRITICAL_ENTRY(
4279 env, string, (uintptr_t *) isCopy);
4280 #endif /* USDT2 */
4281 GC_locker::lock_critical(thread);
4282 if (isCopy != NULL) {
4283 *isCopy = JNI_FALSE;
4284 }
4285 oop s = JNIHandles::resolve_non_null(string);
4286 int s_len = java_lang_String::length(s);
4287 typeArrayOop s_value = java_lang_String::value(s);
4288 int s_offset = java_lang_String::offset(s);
4289 const jchar* ret;
4290 if (s_len > 0) {
4291 ret = s_value->char_at_addr(s_offset);
4292 } else {
4293 ret = (jchar*) s_value->base(T_CHAR);
4294 }
4295 #ifndef USDT2
4296 DTRACE_PROBE1(hotspot_jni, GetStringCritical__return, ret);
4297 #else /* USDT2 */
4298 HOTSPOT_JNI_GETSTRINGCRITICAL_RETURN(
4299 (uint16_t *) ret);
4300 #endif /* USDT2 */
4301 return ret;
4302 JNI_END
4303
4304
4305 JNI_ENTRY(void, jni_ReleaseStringCritical(JNIEnv *env, jstring str, const jchar *chars))
4306 JNIWrapper("ReleaseStringCritical");
4307 #ifndef USDT2
4308 DTRACE_PROBE3(hotspot_jni, ReleaseStringCritical__entry, env, str, chars);
4309 #else /* USDT2 */
4310 HOTSPOT_JNI_RELEASESTRINGCRITICAL_ENTRY(
4311 env, str, (uint16_t *) chars);
4312 #endif /* USDT2 */
4313 // The str and chars arguments are ignored
4314 GC_locker::unlock_critical(thread);
4315 #ifndef USDT2
4316 DTRACE_PROBE(hotspot_jni, ReleaseStringCritical__return);
4317 #else /* USDT2 */
4318 HOTSPOT_JNI_RELEASESTRINGCRITICAL_RETURN(
4319 );
4320 #endif /* USDT2 */
4321 JNI_END
4322
4323
4324 JNI_ENTRY(jweak, jni_NewWeakGlobalRef(JNIEnv *env, jobject ref))
4325 JNIWrapper("jni_NewWeakGlobalRef");
4326 #ifndef USDT2
4327 DTRACE_PROBE2(hotspot_jni, NewWeakGlobalRef__entry, env, ref);
4328 #else /* USDT2 */
4329 HOTSPOT_JNI_NEWWEAKGLOBALREF_ENTRY(
4330 env, ref);
4331 #endif /* USDT2 */
4332 Handle ref_handle(thread, JNIHandles::resolve(ref));
4333 jweak ret = JNIHandles::make_weak_global(ref_handle);
4334 #ifndef USDT2
4335 DTRACE_PROBE1(hotspot_jni, NewWeakGlobalRef__return, ret);
4336 #else /* USDT2 */
4337 HOTSPOT_JNI_NEWWEAKGLOBALREF_RETURN(
4338 ret);
4339 #endif /* USDT2 */
4340 return ret;
4341 JNI_END
4342
4343 // Must be JNI_ENTRY (with HandleMark)
4344 JNI_ENTRY(void, jni_DeleteWeakGlobalRef(JNIEnv *env, jweak ref))
4345 JNIWrapper("jni_DeleteWeakGlobalRef");
4346 #ifndef USDT2
4347 DTRACE_PROBE2(hotspot_jni, DeleteWeakGlobalRef__entry, env, ref);
4348 #else /* USDT2 */
4349 HOTSPOT_JNI_DELETEWEAKGLOBALREF_ENTRY(
4350 env, ref);
4351 #endif /* USDT2 */
4352 JNIHandles::destroy_weak_global(ref);
4353 #ifndef USDT2
4354 DTRACE_PROBE(hotspot_jni, DeleteWeakGlobalRef__return);
4355 #else /* USDT2 */
4356 HOTSPOT_JNI_DELETEWEAKGLOBALREF_RETURN(
4357 );
4358 #endif /* USDT2 */
4359 JNI_END
4360
4361
4362 JNI_QUICK_ENTRY(jboolean, jni_ExceptionCheck(JNIEnv *env))
4363 JNIWrapper("jni_ExceptionCheck");
4364 #ifndef USDT2
4365 DTRACE_PROBE1(hotspot_jni, ExceptionCheck__entry, env);
4366 #else /* USDT2 */
4367 HOTSPOT_JNI_EXCEPTIONCHECK_ENTRY(
4368 env);
4369 #endif /* USDT2 */
4370 jni_check_async_exceptions(thread);
4371 jboolean ret = (thread->has_pending_exception()) ? JNI_TRUE : JNI_FALSE;
4372 #ifndef USDT2
4373 DTRACE_PROBE1(hotspot_jni, ExceptionCheck__return, ret);
4374 #else /* USDT2 */
4375 HOTSPOT_JNI_EXCEPTIONCHECK_RETURN(
4376 ret);
4377 #endif /* USDT2 */
4378 return ret;
4379 JNI_END
4380
4381
4382 // Initialization state for three routines below relating to
4383 // java.nio.DirectBuffers
4384 static jint directBufferSupportInitializeStarted = 0;
4385 static volatile jint directBufferSupportInitializeEnded = 0;
4386 static volatile jint directBufferSupportInitializeFailed = 0;
4387 static jclass bufferClass = NULL;
4388 static jclass directBufferClass = NULL;
4389 static jclass directByteBufferClass = NULL;
4390 static jmethodID directByteBufferConstructor = NULL;
4391 static jfieldID directBufferAddressField = NULL;
4392 static jfieldID bufferCapacityField = NULL;
4393
4394 static jclass lookupOne(JNIEnv* env, const char* name, TRAPS) {
4395 Handle loader; // null (bootstrap) loader
4396 Handle protection_domain; // null protection domain
4397
4398 TempNewSymbol sym = SymbolTable::new_symbol(name, CHECK_NULL);
4399 jclass result = find_class_from_class_loader(env, sym, true, loader, protection_domain, true, CHECK_NULL);
4400
4401 if (TraceClassResolution && result != NULL) {
4402 trace_class_resolution(java_lang_Class::as_Klass(JNIHandles::resolve_non_null(result)));
4403 }
4404 return result;
4405 }
4406
4407 // These lookups are done with the NULL (bootstrap) ClassLoader to
4408 // circumvent any security checks that would be done by jni_FindClass.
4409 JNI_ENTRY(bool, lookupDirectBufferClasses(JNIEnv* env))
4410 {
4411 if ((bufferClass = lookupOne(env, "java/nio/Buffer", thread)) == NULL) { return false; }
4412 if ((directBufferClass = lookupOne(env, "sun/nio/ch/DirectBuffer", thread)) == NULL) { return false; }
4413 if ((directByteBufferClass = lookupOne(env, "java/nio/DirectByteBuffer", thread)) == NULL) { return false; }
4414 return true;
4415 }
4416 JNI_END
4417
4418
4419 static bool initializeDirectBufferSupport(JNIEnv* env, JavaThread* thread) {
4420 if (directBufferSupportInitializeFailed) {
4421 return false;
4422 }
4423
4424 if (Atomic::cmpxchg(1, &directBufferSupportInitializeStarted, 0) == 0) {
4425 if (!lookupDirectBufferClasses(env)) {
4426 directBufferSupportInitializeFailed = 1;
4427 return false;
4428 }
4429
4430 // Make global references for these
4431 bufferClass = (jclass) env->NewGlobalRef(bufferClass);
4432 directBufferClass = (jclass) env->NewGlobalRef(directBufferClass);
4433 directByteBufferClass = (jclass) env->NewGlobalRef(directByteBufferClass);
4434
4435 // Get needed field and method IDs
4436 directByteBufferConstructor = env->GetMethodID(directByteBufferClass, "<init>", "(JI)V");
4437 directBufferAddressField = env->GetFieldID(bufferClass, "address", "J");
4438 bufferCapacityField = env->GetFieldID(bufferClass, "capacity", "I");
4439
4440 if ((directByteBufferConstructor == NULL) ||
4441 (directBufferAddressField == NULL) ||
4442 (bufferCapacityField == NULL)) {
4443 directBufferSupportInitializeFailed = 1;
4444 return false;
4445 }
4446
4447 directBufferSupportInitializeEnded = 1;
4448 } else {
4449 while (!directBufferSupportInitializeEnded && !directBufferSupportInitializeFailed) {
4450 // Set state as yield_all can call os:sleep. On Solaris, yield_all calls
4451 // os::sleep which requires the VM state transition. On other platforms, it
4452 // is not necessary. The following call to change the VM state is purposely
4453 // put inside the loop to avoid potential deadlock when multiple threads
4454 // try to call this method. See 6791815 for more details.
4455 ThreadInVMfromNative tivn(thread);
4456 os::yield_all();
4457 }
4458 }
4459
4460 return !directBufferSupportInitializeFailed;
4461 }
4462
4463 extern "C" jobject JNICALL jni_NewDirectByteBuffer(JNIEnv *env, void* address, jlong capacity)
4464 {
4465 // thread_from_jni_environment() will block if VM is gone.
4466 JavaThread* thread = JavaThread::thread_from_jni_environment(env);
4467
4468 JNIWrapper("jni_NewDirectByteBuffer");
4469 #ifndef USDT2
4470 DTRACE_PROBE3(hotspot_jni, NewDirectByteBuffer__entry, env, address, capacity);
4471 #else /* USDT2 */
4472 HOTSPOT_JNI_NEWDIRECTBYTEBUFFER_ENTRY(
4473 env, address, capacity);
4474 #endif /* USDT2 */
4475
4476 if (!directBufferSupportInitializeEnded) {
4477 if (!initializeDirectBufferSupport(env, thread)) {
4478 #ifndef USDT2
4479 DTRACE_PROBE1(hotspot_jni, NewDirectByteBuffer__return, NULL);
4480 #else /* USDT2 */
4481 HOTSPOT_JNI_NEWDIRECTBYTEBUFFER_RETURN(
4482 NULL);
4483 #endif /* USDT2 */
4484 return NULL;
4485 }
4486 }
4487
4488 // Being paranoid about accidental sign extension on address
4489 jlong addr = (jlong) ((uintptr_t) address);
4490 // NOTE that package-private DirectByteBuffer constructor currently
4491 // takes int capacity
4492 jint cap = (jint) capacity;
4493 jobject ret = env->NewObject(directByteBufferClass, directByteBufferConstructor, addr, cap);
4494 #ifndef USDT2
4495 DTRACE_PROBE1(hotspot_jni, NewDirectByteBuffer__return, ret);
4496 #else /* USDT2 */
4497 HOTSPOT_JNI_NEWDIRECTBYTEBUFFER_RETURN(
4498 ret);
4499 #endif /* USDT2 */
4500 return ret;
4501 }
4502
4503 #ifndef USDT2
4504 DT_RETURN_MARK_DECL(GetDirectBufferAddress, void*);
4505 #else /* USDT2 */
4506 DT_RETURN_MARK_DECL(GetDirectBufferAddress, void*
4507 , HOTSPOT_JNI_GETDIRECTBUFFERADDRESS_RETURN((void*) _ret_ref));
4508 #endif /* USDT2 */
4509
4510 extern "C" void* JNICALL jni_GetDirectBufferAddress(JNIEnv *env, jobject buf)
4511 {
4512 // thread_from_jni_environment() will block if VM is gone.
4513 JavaThread* thread = JavaThread::thread_from_jni_environment(env);
4514
4515 JNIWrapper("jni_GetDirectBufferAddress");
4516 #ifndef USDT2
4517 DTRACE_PROBE2(hotspot_jni, GetDirectBufferAddress__entry, env, buf);
4518 #else /* USDT2 */
4519 HOTSPOT_JNI_GETDIRECTBUFFERADDRESS_ENTRY(
4520 env, buf);
4521 #endif /* USDT2 */
4522 void* ret = NULL;
4523 DT_RETURN_MARK(GetDirectBufferAddress, void*, (const void*&)ret);
4524
4525 if (!directBufferSupportInitializeEnded) {
4526 if (!initializeDirectBufferSupport(env, thread)) {
4527 return 0;
4528 }
4529 }
4530
4531 if ((buf != NULL) && (!env->IsInstanceOf(buf, directBufferClass))) {
4532 return 0;
4533 }
4534
4535 ret = (void*)(intptr_t)env->GetLongField(buf, directBufferAddressField);
4536 return ret;
4537 }
4538
4539 #ifndef USDT2
4540 DT_RETURN_MARK_DECL(GetDirectBufferCapacity, jlong);
4541 #else /* USDT2 */
4542 DT_RETURN_MARK_DECL(GetDirectBufferCapacity, jlong
4543 , HOTSPOT_JNI_GETDIRECTBUFFERCAPACITY_RETURN(_ret_ref));
4544 #endif /* USDT2 */
4545
4546 extern "C" jlong JNICALL jni_GetDirectBufferCapacity(JNIEnv *env, jobject buf)
4547 {
4548 // thread_from_jni_environment() will block if VM is gone.
4549 JavaThread* thread = JavaThread::thread_from_jni_environment(env);
4550
4551 JNIWrapper("jni_GetDirectBufferCapacity");
4552 #ifndef USDT2
4553 DTRACE_PROBE2(hotspot_jni, GetDirectBufferCapacity__entry, env, buf);
4554 #else /* USDT2 */
4555 HOTSPOT_JNI_GETDIRECTBUFFERCAPACITY_ENTRY(
4556 env, buf);
4557 #endif /* USDT2 */
4558 jlong ret = -1;
4559 DT_RETURN_MARK(GetDirectBufferCapacity, jlong, (const jlong&)ret);
4560
4561 if (!directBufferSupportInitializeEnded) {
4562 if (!initializeDirectBufferSupport(env, thread)) {
4563 ret = 0;
4564 return ret;
4565 }
4566 }
4567
4568 if (buf == NULL) {
4569 return -1;
4570 }
4571
4572 if (!env->IsInstanceOf(buf, directBufferClass)) {
4573 return -1;
4574 }
4575
4576 // NOTE that capacity is currently an int in the implementation
4577 ret = env->GetIntField(buf, bufferCapacityField);
4578 return ret;
4579 }
4580
4581
4582 JNI_LEAF(jint, jni_GetVersion(JNIEnv *env))
4583 JNIWrapper("GetVersion");
4584 #ifndef USDT2
4585 DTRACE_PROBE1(hotspot_jni, GetVersion__entry, env);
4586 #else /* USDT2 */
4587 HOTSPOT_JNI_GETVERSION_ENTRY(
4588 env);
4589 #endif /* USDT2 */
4590 #ifndef USDT2
4591 DTRACE_PROBE1(hotspot_jni, GetVersion__return, CurrentVersion);
4592 #else /* USDT2 */
4593 HOTSPOT_JNI_GETVERSION_RETURN(
4594 CurrentVersion);
4595 #endif /* USDT2 */
4596 return CurrentVersion;
4597 JNI_END
4598
4599 extern struct JavaVM_ main_vm;
4600
4601 JNI_LEAF(jint, jni_GetJavaVM(JNIEnv *env, JavaVM **vm))
4602 JNIWrapper("jni_GetJavaVM");
4603 #ifndef USDT2
4604 DTRACE_PROBE2(hotspot_jni, GetJavaVM__entry, env, vm);
4605 #else /* USDT2 */
4606 HOTSPOT_JNI_GETJAVAVM_ENTRY(
4607 env, (void **) vm);
4608 #endif /* USDT2 */
4609 *vm = (JavaVM *)(&main_vm);
4610 #ifndef USDT2
4611 DTRACE_PROBE1(hotspot_jni, GetJavaVM__return, JNI_OK);
4612 #else /* USDT2 */
4613 HOTSPOT_JNI_GETJAVAVM_RETURN(
4614 JNI_OK);
4615 #endif /* USDT2 */
4616 return JNI_OK;
4617 JNI_END
4618
4619 // Structure containing all jni functions
4620 struct JNINativeInterface_ jni_NativeInterface = {
4621 NULL,
4622 NULL,
4623 NULL,
4624
4625 NULL,
4626
4627 jni_GetVersion,
4628
4629 jni_DefineClass,
4630 jni_FindClass,
4631
4632 jni_FromReflectedMethod,
4633 jni_FromReflectedField,
4634
4635 jni_ToReflectedMethod,
4636
4637 jni_GetSuperclass,
4638 jni_IsAssignableFrom,
4639
4640 jni_ToReflectedField,
4641
4642 jni_Throw,
4643 jni_ThrowNew,
4644 jni_ExceptionOccurred,
4645 jni_ExceptionDescribe,
4646 jni_ExceptionClear,
4647 jni_FatalError,
4648
4649 jni_PushLocalFrame,
4650 jni_PopLocalFrame,
4651
4652 jni_NewGlobalRef,
4653 jni_DeleteGlobalRef,
4654 jni_DeleteLocalRef,
4655 jni_IsSameObject,
4656
4657 jni_NewLocalRef,
4658 jni_EnsureLocalCapacity,
4659
4660 jni_AllocObject,
4661 jni_NewObject,
4662 jni_NewObjectV,
4663 jni_NewObjectA,
4664
4665 jni_GetObjectClass,
4666 jni_IsInstanceOf,
4667
4668 jni_GetMethodID,
4669
4670 jni_CallObjectMethod,
4671 jni_CallObjectMethodV,
4672 jni_CallObjectMethodA,
4673 jni_CallBooleanMethod,
4674 jni_CallBooleanMethodV,
4675 jni_CallBooleanMethodA,
4676 jni_CallByteMethod,
4677 jni_CallByteMethodV,
4678 jni_CallByteMethodA,
4679 jni_CallCharMethod,
4680 jni_CallCharMethodV,
4681 jni_CallCharMethodA,
4682 jni_CallShortMethod,
4683 jni_CallShortMethodV,
4684 jni_CallShortMethodA,
4685 jni_CallIntMethod,
4686 jni_CallIntMethodV,
4687 jni_CallIntMethodA,
4688 jni_CallLongMethod,
4689 jni_CallLongMethodV,
4690 jni_CallLongMethodA,
4691 jni_CallFloatMethod,
4692 jni_CallFloatMethodV,
4693 jni_CallFloatMethodA,
4694 jni_CallDoubleMethod,
4695 jni_CallDoubleMethodV,
4696 jni_CallDoubleMethodA,
4697 jni_CallVoidMethod,
4698 jni_CallVoidMethodV,
4699 jni_CallVoidMethodA,
4700
4701 jni_CallNonvirtualObjectMethod,
4702 jni_CallNonvirtualObjectMethodV,
4703 jni_CallNonvirtualObjectMethodA,
4704 jni_CallNonvirtualBooleanMethod,
4705 jni_CallNonvirtualBooleanMethodV,
4706 jni_CallNonvirtualBooleanMethodA,
4707 jni_CallNonvirtualByteMethod,
4708 jni_CallNonvirtualByteMethodV,
4709 jni_CallNonvirtualByteMethodA,
4710 jni_CallNonvirtualCharMethod,
4711 jni_CallNonvirtualCharMethodV,
4712 jni_CallNonvirtualCharMethodA,
4713 jni_CallNonvirtualShortMethod,
4714 jni_CallNonvirtualShortMethodV,
4715 jni_CallNonvirtualShortMethodA,
4716 jni_CallNonvirtualIntMethod,
4717 jni_CallNonvirtualIntMethodV,
4718 jni_CallNonvirtualIntMethodA,
4719 jni_CallNonvirtualLongMethod,
4720 jni_CallNonvirtualLongMethodV,
4721 jni_CallNonvirtualLongMethodA,
4722 jni_CallNonvirtualFloatMethod,
4723 jni_CallNonvirtualFloatMethodV,
4724 jni_CallNonvirtualFloatMethodA,
4725 jni_CallNonvirtualDoubleMethod,
4726 jni_CallNonvirtualDoubleMethodV,
4727 jni_CallNonvirtualDoubleMethodA,
4728 jni_CallNonvirtualVoidMethod,
4729 jni_CallNonvirtualVoidMethodV,
4730 jni_CallNonvirtualVoidMethodA,
4731
4732 jni_GetFieldID,
4733
4734 jni_GetObjectField,
4735 jni_GetBooleanField,
4736 jni_GetByteField,
4737 jni_GetCharField,
4738 jni_GetShortField,
4739 jni_GetIntField,
4740 jni_GetLongField,
4741 jni_GetFloatField,
4742 jni_GetDoubleField,
4743
4744 jni_SetObjectField,
4745 jni_SetBooleanField,
4746 jni_SetByteField,
4747 jni_SetCharField,
4748 jni_SetShortField,
4749 jni_SetIntField,
4750 jni_SetLongField,
4751 jni_SetFloatField,
4752 jni_SetDoubleField,
4753
4754 jni_GetStaticMethodID,
4755
4756 jni_CallStaticObjectMethod,
4757 jni_CallStaticObjectMethodV,
4758 jni_CallStaticObjectMethodA,
4759 jni_CallStaticBooleanMethod,
4760 jni_CallStaticBooleanMethodV,
4761 jni_CallStaticBooleanMethodA,
4762 jni_CallStaticByteMethod,
4763 jni_CallStaticByteMethodV,
4764 jni_CallStaticByteMethodA,
4765 jni_CallStaticCharMethod,
4766 jni_CallStaticCharMethodV,
4767 jni_CallStaticCharMethodA,
4768 jni_CallStaticShortMethod,
4769 jni_CallStaticShortMethodV,
4770 jni_CallStaticShortMethodA,
4771 jni_CallStaticIntMethod,
4772 jni_CallStaticIntMethodV,
4773 jni_CallStaticIntMethodA,
4774 jni_CallStaticLongMethod,
4775 jni_CallStaticLongMethodV,
4776 jni_CallStaticLongMethodA,
4777 jni_CallStaticFloatMethod,
4778 jni_CallStaticFloatMethodV,
4779 jni_CallStaticFloatMethodA,
4780 jni_CallStaticDoubleMethod,
4781 jni_CallStaticDoubleMethodV,
4782 jni_CallStaticDoubleMethodA,
4783 jni_CallStaticVoidMethod,
4784 jni_CallStaticVoidMethodV,
4785 jni_CallStaticVoidMethodA,
4786
4787 jni_GetStaticFieldID,
4788
4789 jni_GetStaticObjectField,
4790 jni_GetStaticBooleanField,
4791 jni_GetStaticByteField,
4792 jni_GetStaticCharField,
4793 jni_GetStaticShortField,
4794 jni_GetStaticIntField,
4795 jni_GetStaticLongField,
4796 jni_GetStaticFloatField,
4797 jni_GetStaticDoubleField,
4798
4799 jni_SetStaticObjectField,
4800 jni_SetStaticBooleanField,
4801 jni_SetStaticByteField,
4802 jni_SetStaticCharField,
4803 jni_SetStaticShortField,
4804 jni_SetStaticIntField,
4805 jni_SetStaticLongField,
4806 jni_SetStaticFloatField,
4807 jni_SetStaticDoubleField,
4808
4809 jni_NewString,
4810 jni_GetStringLength,
4811 jni_GetStringChars,
4812 jni_ReleaseStringChars,
4813
4814 jni_NewStringUTF,
4815 jni_GetStringUTFLength,
4816 jni_GetStringUTFChars,
4817 jni_ReleaseStringUTFChars,
4818
4819 jni_GetArrayLength,
4820
4821 jni_NewObjectArray,
4822 jni_GetObjectArrayElement,
4823 jni_SetObjectArrayElement,
4824
4825 jni_NewBooleanArray,
4826 jni_NewByteArray,
4827 jni_NewCharArray,
4828 jni_NewShortArray,
4829 jni_NewIntArray,
4830 jni_NewLongArray,
4831 jni_NewFloatArray,
4832 jni_NewDoubleArray,
4833
4834 jni_GetBooleanArrayElements,
4835 jni_GetByteArrayElements,
4836 jni_GetCharArrayElements,
4837 jni_GetShortArrayElements,
4838 jni_GetIntArrayElements,
4839 jni_GetLongArrayElements,
4840 jni_GetFloatArrayElements,
4841 jni_GetDoubleArrayElements,
4842
4843 jni_ReleaseBooleanArrayElements,
4844 jni_ReleaseByteArrayElements,
4845 jni_ReleaseCharArrayElements,
4846 jni_ReleaseShortArrayElements,
4847 jni_ReleaseIntArrayElements,
4848 jni_ReleaseLongArrayElements,
4849 jni_ReleaseFloatArrayElements,
4850 jni_ReleaseDoubleArrayElements,
4851
4852 jni_GetBooleanArrayRegion,
4853 jni_GetByteArrayRegion,
4854 jni_GetCharArrayRegion,
4855 jni_GetShortArrayRegion,
4856 jni_GetIntArrayRegion,
4857 jni_GetLongArrayRegion,
4858 jni_GetFloatArrayRegion,
4859 jni_GetDoubleArrayRegion,
4860
4861 jni_SetBooleanArrayRegion,
4862 jni_SetByteArrayRegion,
4863 jni_SetCharArrayRegion,
4864 jni_SetShortArrayRegion,
4865 jni_SetIntArrayRegion,
4866 jni_SetLongArrayRegion,
4867 jni_SetFloatArrayRegion,
4868 jni_SetDoubleArrayRegion,
4869
4870 jni_RegisterNatives,
4871 jni_UnregisterNatives,
4872
4873 jni_MonitorEnter,
4874 jni_MonitorExit,
4875
4876 jni_GetJavaVM,
4877
4878 jni_GetStringRegion,
4879 jni_GetStringUTFRegion,
4880
4881 jni_GetPrimitiveArrayCritical,
4882 jni_ReleasePrimitiveArrayCritical,
4883
4884 jni_GetStringCritical,
4885 jni_ReleaseStringCritical,
4886
4887 jni_NewWeakGlobalRef,
4888 jni_DeleteWeakGlobalRef,
4889
4890 jni_ExceptionCheck,
4891
4892 jni_NewDirectByteBuffer,
4893 jni_GetDirectBufferAddress,
4894 jni_GetDirectBufferCapacity,
4895
4896 // New 1_6 features
4897
4898 jni_GetObjectRefType
4899 };
4900
4901
4902 // For jvmti use to modify jni function table.
4903 // Java threads in native contiues to run until it is transitioned
4904 // to VM at safepoint. Before the transition or before it is blocked
4905 // for safepoint it may access jni function table. VM could crash if
4906 // any java thread access the jni function table in the middle of memcpy.
4907 // To avoid this each function pointers are copied automically.
4908 void copy_jni_function_table(const struct JNINativeInterface_ *new_jni_NativeInterface) {
4909 assert(SafepointSynchronize::is_at_safepoint(), "must be at safepoint");
4910 intptr_t *a = (intptr_t *) jni_functions();
4911 intptr_t *b = (intptr_t *) new_jni_NativeInterface;
4912 for (uint i=0; i < sizeof(struct JNINativeInterface_)/sizeof(void *); i++) {
4913 Atomic::store_ptr(*b++, a++);
4914 }
4915 }
4916
4917 void quicken_jni_functions() {
4918 // Replace Get<Primitive>Field with fast versions
4919 if (UseFastJNIAccessors && !JvmtiExport::can_post_field_access()
4920 && !VerifyJNIFields && !TraceJNICalls && !CountJNICalls && !CheckJNICalls
4921 #if defined(_WINDOWS) && defined(IA32) && defined(COMPILER2)
4922 // windows x86 currently needs SEH wrapper and the gain of the fast
4923 // versions currently isn't certain for server vm on uniprocessor.
4924 && os::is_MP()
4925 #endif
4926 ) {
4927 address func;
4928 func = JNI_FastGetField::generate_fast_get_boolean_field();
4929 if (func != (address)-1) {
4930 jni_NativeInterface.GetBooleanField = (GetBooleanField_t)func;
4931 }
4932 func = JNI_FastGetField::generate_fast_get_byte_field();
4933 if (func != (address)-1) {
4934 jni_NativeInterface.GetByteField = (GetByteField_t)func;
4935 }
4936 func = JNI_FastGetField::generate_fast_get_char_field();
4937 if (func != (address)-1) {
4938 jni_NativeInterface.GetCharField = (GetCharField_t)func;
4939 }
4940 func = JNI_FastGetField::generate_fast_get_short_field();
4941 if (func != (address)-1) {
4942 jni_NativeInterface.GetShortField = (GetShortField_t)func;
4943 }
4944 func = JNI_FastGetField::generate_fast_get_int_field();
4945 if (func != (address)-1) {
4946 jni_NativeInterface.GetIntField = (GetIntField_t)func;
4947 }
4948 func = JNI_FastGetField::generate_fast_get_long_field();
4949 if (func != (address)-1) {
4950 jni_NativeInterface.GetLongField = (GetLongField_t)func;
4951 }
4952 func = JNI_FastGetField::generate_fast_get_float_field();
4953 if (func != (address)-1) {
4954 jni_NativeInterface.GetFloatField = (GetFloatField_t)func;
4955 }
4956 func = JNI_FastGetField::generate_fast_get_double_field();
4957 if (func != (address)-1) {
4958 jni_NativeInterface.GetDoubleField = (GetDoubleField_t)func;
4959 }
4960 }
4961 }
4962
4963 // Returns the function structure
4964 struct JNINativeInterface_* jni_functions() {
4965 #if INCLUDE_JNI_CHECK
4966 if (CheckJNICalls) return jni_functions_check();
4967 #endif // INCLUDE_JNI_CHECK
4968 return &jni_NativeInterface;
4969 }
4970
4971 // Returns the function structure
4972 struct JNINativeInterface_* jni_functions_nocheck() {
4973 return &jni_NativeInterface;
4974 }
4975
4976
4977 // Invocation API
4978
4979
4980 // Forward declaration
4981 extern const struct JNIInvokeInterface_ jni_InvokeInterface;
4982
4983 // Global invocation API vars
4984 volatile jint vm_created = 0;
4985 // Indicate whether it is safe to recreate VM
4986 volatile jint safe_to_recreate_vm = 1;
4987 struct JavaVM_ main_vm = {&jni_InvokeInterface};
4988
4989
4990 #define JAVASTACKSIZE (400 * 1024) /* Default size of a thread java stack */
4991 enum { VERIFY_NONE, VERIFY_REMOTE, VERIFY_ALL };
4992
4993 #ifndef USDT2
4994 HS_DTRACE_PROBE_DECL1(hotspot_jni, GetDefaultJavaVMInitArgs__entry, void*);
4995 DT_RETURN_MARK_DECL(GetDefaultJavaVMInitArgs, jint);
4996 #else /* USDT2 */
4997 DT_RETURN_MARK_DECL(GetDefaultJavaVMInitArgs, jint
4998 , HOTSPOT_JNI_GETDEFAULTJAVAVMINITARGS_RETURN(_ret_ref));
4999 #endif /* USDT2 */
5000
5001 _JNI_IMPORT_OR_EXPORT_ jint JNICALL JNI_GetDefaultJavaVMInitArgs(void *args_) {
5002 #ifndef USDT2
5003 HS_DTRACE_PROBE1(hotspot_jni, GetDefaultJavaVMInitArgs__entry, args_);
5004 #else /* USDT2 */
5005 HOTSPOT_JNI_GETDEFAULTJAVAVMINITARGS_ENTRY(
5006 args_);
5007 #endif /* USDT2 */
5008 JDK1_1InitArgs *args = (JDK1_1InitArgs *)args_;
5009 jint ret = JNI_ERR;
5010 DT_RETURN_MARK(GetDefaultJavaVMInitArgs, jint, (const jint&)ret);
5011
5012 if (Threads::is_supported_jni_version(args->version)) {
5013 ret = JNI_OK;
5014 }
5015 // 1.1 style no longer supported in hotspot.
5016 // According the JNI spec, we should update args->version on return.
5017 // We also use the structure to communicate with launcher about default
5018 // stack size.
5019 if (args->version == JNI_VERSION_1_1) {
5020 args->version = JNI_VERSION_1_2;
5021 // javaStackSize is int in arguments structure
5022 assert(jlong(ThreadStackSize) * K < INT_MAX, "integer overflow");
5023 args->javaStackSize = (jint)(ThreadStackSize * K);
5024 }
5025 return ret;
5026 }
5027
5028 #ifndef PRODUCT
5029
5030 #include "gc_implementation/shared/gcTimer.hpp"
5031 #include "gc_interface/collectedHeap.hpp"
5032 #if INCLUDE_ALL_GCS
5033 #include "gc_implementation/g1/heapRegionRemSet.hpp"
5034 #endif
5035 #include "utilities/quickSort.hpp"
5036 #include "utilities/ostream.hpp"
5037 #if INCLUDE_VM_STRUCTS
5038 #include "runtime/vmStructs.hpp"
5039 #endif
5040
5041 #define run_unit_test(unit_test_function_call) \
5042 tty->print_cr("Running test: " #unit_test_function_call); \
5043 unit_test_function_call
5044
5045 // Forward declaration
5046 void TestReservedSpace_test();
5047 void TestReserveMemorySpecial_test();
5048 void TestVirtualSpace_test();
5049 void TestMetaspaceAux_test();
5050 void TestMetachunk_test();
5051 #if INCLUDE_ALL_GCS
5052 void TestG1BiasedArray_test();
5053 #endif
5054
5055 void execute_internal_vm_tests() {
5056 if (ExecuteInternalVMTests) {
5057 tty->print_cr("Running internal VM tests");
5058 run_unit_test(TestReservedSpace_test());
5059 run_unit_test(TestReserveMemorySpecial_test());
5060 run_unit_test(TestVirtualSpace_test());
5061 run_unit_test(TestMetaspaceAux_test());
5062 run_unit_test(TestMetachunk_test());
5063 run_unit_test(GlobalDefinitions::test_globals());
5064 run_unit_test(GCTimerAllTest::all());
5065 run_unit_test(arrayOopDesc::test_max_array_length());
5066 run_unit_test(CollectedHeap::test_is_in());
5067 run_unit_test(QuickSort::test_quick_sort());
5068 run_unit_test(AltHashing::test_alt_hash());
5069 run_unit_test(test_loggc_filename());
5070 #if INCLUDE_VM_STRUCTS
5071 run_unit_test(VMStructs::test());
5072 #endif
5073 #if INCLUDE_ALL_GCS
5074 run_unit_test(TestG1BiasedArray_test());
5075 run_unit_test(HeapRegionRemSet::test_prt());
5076 #endif
5077 tty->print_cr("All internal VM tests passed");
5078 }
5079 }
5080
5081 #undef run_unit_test
5082
5083 #endif
5084
5085 #ifndef USDT2
5086 HS_DTRACE_PROBE_DECL3(hotspot_jni, CreateJavaVM__entry, vm, penv, args);
5087 DT_RETURN_MARK_DECL(CreateJavaVM, jint);
5088 #else /* USDT2 */
5089 DT_RETURN_MARK_DECL(CreateJavaVM, jint
5090 , HOTSPOT_JNI_CREATEJAVAVM_RETURN(_ret_ref));
5091 #endif /* USDT2 */
5092
5093 _JNI_IMPORT_OR_EXPORT_ jint JNICALL JNI_CreateJavaVM(JavaVM **vm, void **penv, void *args) {
5094 #ifndef USDT2
5095 HS_DTRACE_PROBE3(hotspot_jni, CreateJavaVM__entry, vm, penv, args);
5096 #else /* USDT2 */
5097 HOTSPOT_JNI_CREATEJAVAVM_ENTRY(
5098 (void **) vm, penv, args);
5099 #endif /* USDT2 */
5100
5101 jint result = JNI_ERR;
5102 DT_RETURN_MARK(CreateJavaVM, jint, (const jint&)result);
5103
5104 // We're about to use Atomic::xchg for synchronization. Some Zero
5105 // platforms use the GCC builtin __sync_lock_test_and_set for this,
5106 // but __sync_lock_test_and_set is not guaranteed to do what we want
5107 // on all architectures. So we check it works before relying on it.
5108 #if defined(ZERO) && defined(ASSERT)
5109 {
5110 jint a = 0xcafebabe;
5111 jint b = Atomic::xchg(0xdeadbeef, &a);
5112 void *c = &a;
5113 void *d = Atomic::xchg_ptr(&b, &c);
5114 assert(a == (jint) 0xdeadbeef && b == (jint) 0xcafebabe, "Atomic::xchg() works");
5115 assert(c == &b && d == &a, "Atomic::xchg_ptr() works");
5116 }
5117 #endif // ZERO && ASSERT
5118
5119 // At the moment it's only possible to have one Java VM,
5120 // since some of the runtime state is in global variables.
5121
5122 // We cannot use our mutex locks here, since they only work on
5123 // Threads. We do an atomic compare and exchange to ensure only
5124 // one thread can call this method at a time
5125
5126 // We use Atomic::xchg rather than Atomic::add/dec since on some platforms
5127 // the add/dec implementations are dependent on whether we are running
5128 // on a multiprocessor, and at this stage of initialization the os::is_MP
5129 // function used to determine this will always return false. Atomic::xchg
5130 // does not have this problem.
5131 if (Atomic::xchg(1, &vm_created) == 1) {
5132 return JNI_EEXIST; // already created, or create attempt in progress
5133 }
5134 if (Atomic::xchg(0, &safe_to_recreate_vm) == 0) {
5135 return JNI_ERR; // someone tried and failed and retry not allowed.
5136 }
5137
5138 assert(vm_created == 1, "vm_created is true during the creation");
5139
5140 /**
5141 * Certain errors during initialization are recoverable and do not
5142 * prevent this method from being called again at a later time
5143 * (perhaps with different arguments). However, at a certain
5144 * point during initialization if an error occurs we cannot allow
5145 * this function to be called again (or it will crash). In those
5146 * situations, the 'canTryAgain' flag is set to false, which atomically
5147 * sets safe_to_recreate_vm to 1, such that any new call to
5148 * JNI_CreateJavaVM will immediately fail using the above logic.
5149 */
5150 bool can_try_again = true;
5151
5152 result = Threads::create_vm((JavaVMInitArgs*) args, &can_try_again);
5153 if (result == JNI_OK) {
5154 JavaThread *thread = JavaThread::current();
5155 /* thread is thread_in_vm here */
5156 *vm = (JavaVM *)(&main_vm);
5157 *(JNIEnv**)penv = thread->jni_environment();
5158
5159 // Tracks the time application was running before GC
5160 RuntimeService::record_application_start();
5161
5162 // Notify JVMTI
5163 if (JvmtiExport::should_post_thread_life()) {
5164 JvmtiExport::post_thread_start(thread);
5165 }
5166
5167 EventThreadStart event;
5168 if (event.should_commit()) {
5169 event.set_javalangthread(java_lang_Thread::thread_id(thread->threadObj()));
5170 event.commit();
5171 }
5172
5173 #ifndef PRODUCT
5174 #ifndef TARGET_OS_FAMILY_windows
5175 #define CALL_TEST_FUNC_WITH_WRAPPER_IF_NEEDED(f) f()
5176 #endif
5177
5178 // Check if we should compile all classes on bootclasspath
5179 if (CompileTheWorld) ClassLoader::compile_the_world();
5180 if (ReplayCompiles) ciReplay::replay(thread);
5181
5182 // Some platforms (like Win*) need a wrapper around these test
5183 // functions in order to properly handle error conditions.
5184 CALL_TEST_FUNC_WITH_WRAPPER_IF_NEEDED(test_error_handler);
5185 CALL_TEST_FUNC_WITH_WRAPPER_IF_NEEDED(execute_internal_vm_tests);
5186 #endif
5187
5188 // Since this is not a JVM_ENTRY we have to set the thread state manually before leaving.
5189 ThreadStateTransition::transition_and_fence(thread, _thread_in_vm, _thread_in_native);
5190 } else {
5191 if (can_try_again) {
5192 // reset safe_to_recreate_vm to 1 so that retrial would be possible
5193 safe_to_recreate_vm = 1;
5194 }
5195
5196 // Creation failed. We must reset vm_created
5197 *vm = 0;
5198 *(JNIEnv**)penv = 0;
5199 // reset vm_created last to avoid race condition. Use OrderAccess to
5200 // control both compiler and architectural-based reordering.
5201 OrderAccess::release_store(&vm_created, 0);
5202 }
5203
5204 return result;
5205 }
5206
5207 #ifndef USDT2
5208 HS_DTRACE_PROBE_DECL3(hotspot_jni, GetCreatedJavaVMs__entry, \
5209 JavaVM**, jsize, jsize*);
5210 HS_DTRACE_PROBE_DECL1(hotspot_jni, GetCreatedJavaVMs__return, jint);
5211 #endif /* !USDT2 */
5212
5213 _JNI_IMPORT_OR_EXPORT_ jint JNICALL JNI_GetCreatedJavaVMs(JavaVM **vm_buf, jsize bufLen, jsize *numVMs) {
5214 // See bug 4367188, the wrapper can sometimes cause VM crashes
5215 // JNIWrapper("GetCreatedJavaVMs");
5216 #ifndef USDT2
5217 HS_DTRACE_PROBE3(hotspot_jni, GetCreatedJavaVMs__entry, \
5218 vm_buf, bufLen, numVMs);
5219 #else /* USDT2 */
5220 HOTSPOT_JNI_GETCREATEDJAVAVMS_ENTRY(
5221 (void **) vm_buf, bufLen, (uintptr_t *) numVMs);
5222 #endif /* USDT2 */
5223 if (vm_created) {
5224 if (numVMs != NULL) *numVMs = 1;
5225 if (bufLen > 0) *vm_buf = (JavaVM *)(&main_vm);
5226 } else {
5227 if (numVMs != NULL) *numVMs = 0;
5228 }
5229 #ifndef USDT2
5230 HS_DTRACE_PROBE1(hotspot_jni, GetCreatedJavaVMs__return, JNI_OK);
5231 #else /* USDT2 */
5232 HOTSPOT_JNI_GETCREATEDJAVAVMS_RETURN(
5233 JNI_OK);
5234 #endif /* USDT2 */
5235 return JNI_OK;
5236 }
5237
5238 extern "C" {
5239
5240 #ifndef USDT2
5241 DT_RETURN_MARK_DECL(DestroyJavaVM, jint);
5242 #else /* USDT2 */
5243 DT_RETURN_MARK_DECL(DestroyJavaVM, jint
5244 , HOTSPOT_JNI_DESTROYJAVAVM_RETURN(_ret_ref));
5245 #endif /* USDT2 */
5246
5247 jint JNICALL jni_DestroyJavaVM(JavaVM *vm) {
5248 #ifndef USDT2
5249 DTRACE_PROBE1(hotspot_jni, DestroyJavaVM__entry, vm);
5250 #else /* USDT2 */
5251 HOTSPOT_JNI_DESTROYJAVAVM_ENTRY(
5252 vm);
5253 #endif /* USDT2 */
5254 jint res = JNI_ERR;
5255 DT_RETURN_MARK(DestroyJavaVM, jint, (const jint&)res);
5256
5257 if (!vm_created) {
5258 res = JNI_ERR;
5259 return res;
5260 }
5261
5262 JNIWrapper("DestroyJavaVM");
5263 JNIEnv *env;
5264 JavaVMAttachArgs destroyargs;
5265 destroyargs.version = CurrentVersion;
5266 destroyargs.name = (char *)"DestroyJavaVM";
5267 destroyargs.group = NULL;
5268 res = vm->AttachCurrentThread((void **)&env, (void *)&destroyargs);
5269 if (res != JNI_OK) {
5270 return res;
5271 }
5272
5273 // Since this is not a JVM_ENTRY we have to set the thread state manually before entering.
5274 JavaThread* thread = JavaThread::current();
5275 ThreadStateTransition::transition_from_native(thread, _thread_in_vm);
5276 if (Threads::destroy_vm()) {
5277 // Should not change thread state, VM is gone
5278 vm_created = false;
5279 res = JNI_OK;
5280 return res;
5281 } else {
5282 ThreadStateTransition::transition_and_fence(thread, _thread_in_vm, _thread_in_native);
5283 res = JNI_ERR;
5284 return res;
5285 }
5286 }
5287
5288
5289 static jint attach_current_thread(JavaVM *vm, void **penv, void *_args, bool daemon) {
5290 JavaVMAttachArgs *args = (JavaVMAttachArgs *) _args;
5291
5292 // Check below commented out from JDK1.2fcs as well
5293 /*
5294 if (args && (args->version != JNI_VERSION_1_1 || args->version != JNI_VERSION_1_2)) {
5295 return JNI_EVERSION;
5296 }
5297 */
5298
5299 Thread* t = ThreadLocalStorage::get_thread_slow();
5300 if (t != NULL) {
5301 // If the thread has been attached this operation is a no-op
5302 *(JNIEnv**)penv = ((JavaThread*) t)->jni_environment();
5303 return JNI_OK;
5304 }
5305
5306 // Create a thread and mark it as attaching so it will be skipped by the
5307 // ThreadsListEnumerator - see CR 6404306
5308 JavaThread* thread = new JavaThread(true);
5309
5310 // Set correct safepoint info. The thread is going to call into Java when
5311 // initializing the Java level thread object. Hence, the correct state must
5312 // be set in order for the Safepoint code to deal with it correctly.
5313 thread->set_thread_state(_thread_in_vm);
5314 // Must do this before initialize_thread_local_storage
5315 thread->record_stack_base_and_size();
5316
5317 thread->initialize_thread_local_storage();
5318
5319 if (!os::create_attached_thread(thread)) {
5320 delete thread;
5321 return JNI_ERR;
5322 }
5323 // Enable stack overflow checks
5324 thread->create_stack_guard_pages();
5325
5326 thread->initialize_tlab();
5327
5328 thread->cache_global_variables();
5329
5330 // Crucial that we do not have a safepoint check for this thread, since it has
5331 // not been added to the Thread list yet.
5332 { Threads_lock->lock_without_safepoint_check();
5333 // This must be inside this lock in order to get FullGCALot to work properly, i.e., to
5334 // avoid this thread trying to do a GC before it is added to the thread-list
5335 thread->set_active_handles(JNIHandleBlock::allocate_block());
5336 Threads::add(thread, daemon);
5337 Threads_lock->unlock();
5338 }
5339 // Create thread group and name info from attach arguments
5340 oop group = NULL;
5341 char* thread_name = NULL;
5342 if (args != NULL && Threads::is_supported_jni_version(args->version)) {
5343 group = JNIHandles::resolve(args->group);
5344 thread_name = args->name; // may be NULL
5345 }
5346 if (group == NULL) group = Universe::main_thread_group();
5347
5348 // Create Java level thread object and attach it to this thread
5349 bool attach_failed = false;
5350 {
5351 EXCEPTION_MARK;
5352 HandleMark hm(THREAD);
5353 Handle thread_group(THREAD, group);
5354 thread->allocate_threadObj(thread_group, thread_name, daemon, THREAD);
5355 if (HAS_PENDING_EXCEPTION) {
5356 CLEAR_PENDING_EXCEPTION;
5357 // cleanup outside the handle mark.
5358 attach_failed = true;
5359 }
5360 }
5361
5362 if (attach_failed) {
5363 // Added missing cleanup
5364 thread->cleanup_failed_attach_current_thread();
5365 return JNI_ERR;
5366 }
5367
5368 // mark the thread as no longer attaching
5369 // this uses a fence to push the change through so we don't have
5370 // to regrab the threads_lock
5371 thread->set_done_attaching_via_jni();
5372
5373 // Set java thread status.
5374 java_lang_Thread::set_thread_status(thread->threadObj(),
5375 java_lang_Thread::RUNNABLE);
5376
5377 // Notify the debugger
5378 if (JvmtiExport::should_post_thread_life()) {
5379 JvmtiExport::post_thread_start(thread);
5380 }
5381
5382 EventThreadStart event;
5383 if (event.should_commit()) {
5384 event.set_javalangthread(java_lang_Thread::thread_id(thread->threadObj()));
5385 event.commit();
5386 }
5387
5388 *(JNIEnv**)penv = thread->jni_environment();
5389
5390 // Now leaving the VM, so change thread_state. This is normally automatically taken care
5391 // of in the JVM_ENTRY. But in this situation we have to do it manually. Notice, that by
5392 // using ThreadStateTransition::transition, we do a callback to the safepoint code if
5393 // needed.
5394
5395 ThreadStateTransition::transition_and_fence(thread, _thread_in_vm, _thread_in_native);
5396
5397 // Perform any platform dependent FPU setup
5398 os::setup_fpu();
5399
5400 return JNI_OK;
5401 }
5402
5403
5404 jint JNICALL jni_AttachCurrentThread(JavaVM *vm, void **penv, void *_args) {
5405 #ifndef USDT2
5406 DTRACE_PROBE3(hotspot_jni, AttachCurrentThread__entry, vm, penv, _args);
5407 #else /* USDT2 */
5408 HOTSPOT_JNI_ATTACHCURRENTTHREAD_ENTRY(
5409 vm, penv, _args);
5410 #endif /* USDT2 */
5411 if (!vm_created) {
5412 #ifndef USDT2
5413 DTRACE_PROBE1(hotspot_jni, AttachCurrentThread__return, JNI_ERR);
5414 #else /* USDT2 */
5415 HOTSPOT_JNI_ATTACHCURRENTTHREAD_RETURN(
5416 (uint32_t) JNI_ERR);
5417 #endif /* USDT2 */
5418 return JNI_ERR;
5419 }
5420
5421 JNIWrapper("AttachCurrentThread");
5422 jint ret = attach_current_thread(vm, penv, _args, false);
5423 #ifndef USDT2
5424 DTRACE_PROBE1(hotspot_jni, AttachCurrentThread__return, ret);
5425 #else /* USDT2 */
5426 HOTSPOT_JNI_ATTACHCURRENTTHREAD_RETURN(
5427 ret);
5428 #endif /* USDT2 */
5429 return ret;
5430 }
5431
5432
5433 jint JNICALL jni_DetachCurrentThread(JavaVM *vm) {
5434 #ifndef USDT2
5435 DTRACE_PROBE1(hotspot_jni, DetachCurrentThread__entry, vm);
5436 #else /* USDT2 */
5437 HOTSPOT_JNI_DETACHCURRENTTHREAD_ENTRY(
5438 vm);
5439 #endif /* USDT2 */
5440 VM_Exit::block_if_vm_exited();
5441
5442 JNIWrapper("DetachCurrentThread");
5443
5444 // If the thread has been deattacted the operations is a no-op
5445 if (ThreadLocalStorage::thread() == NULL) {
5446 #ifndef USDT2
5447 DTRACE_PROBE1(hotspot_jni, DetachCurrentThread__return, JNI_OK);
5448 #else /* USDT2 */
5449 HOTSPOT_JNI_DETACHCURRENTTHREAD_RETURN(
5450 JNI_OK);
5451 #endif /* USDT2 */
5452 return JNI_OK;
5453 }
5454
5455 JavaThread* thread = JavaThread::current();
5456 if (thread->has_last_Java_frame()) {
5457 #ifndef USDT2
5458 DTRACE_PROBE1(hotspot_jni, DetachCurrentThread__return, JNI_ERR);
5459 #else /* USDT2 */
5460 HOTSPOT_JNI_DETACHCURRENTTHREAD_RETURN(
5461 (uint32_t) JNI_ERR);
5462 #endif /* USDT2 */
5463 // Can't detach a thread that's running java, that can't work.
5464 return JNI_ERR;
5465 }
5466
5467 // Safepoint support. Have to do call-back to safepoint code, if in the
5468 // middel of a safepoint operation
5469 ThreadStateTransition::transition_from_native(thread, _thread_in_vm);
5470
5471 // XXX: Note that JavaThread::exit() call below removes the guards on the
5472 // stack pages set up via enable_stack_{red,yellow}_zone() calls
5473 // above in jni_AttachCurrentThread. Unfortunately, while the setting
5474 // of the guards is visible in jni_AttachCurrentThread above,
5475 // the removal of the guards is buried below in JavaThread::exit()
5476 // here. The abstraction should be more symmetrically either exposed
5477 // or hidden (e.g. it could probably be hidden in the same
5478 // (platform-dependent) methods where we do alternate stack
5479 // maintenance work?)
5480 thread->exit(false, JavaThread::jni_detach);
5481 delete thread;
5482
5483 #ifndef USDT2
5484 DTRACE_PROBE1(hotspot_jni, DetachCurrentThread__return, JNI_OK);
5485 #else /* USDT2 */
5486 HOTSPOT_JNI_DETACHCURRENTTHREAD_RETURN(
5487 JNI_OK);
5488 #endif /* USDT2 */
5489 return JNI_OK;
5490 }
5491
5492 #ifndef USDT2
5493 DT_RETURN_MARK_DECL(GetEnv, jint);
5494 #else /* USDT2 */
5495 DT_RETURN_MARK_DECL(GetEnv, jint
5496 , HOTSPOT_JNI_GETENV_RETURN(_ret_ref));
5497 #endif /* USDT2 */
5498
5499 jint JNICALL jni_GetEnv(JavaVM *vm, void **penv, jint version) {
5500 #ifndef USDT2
5501 DTRACE_PROBE3(hotspot_jni, GetEnv__entry, vm, penv, version);
5502 #else /* USDT2 */
5503 HOTSPOT_JNI_GETENV_ENTRY(
5504 vm, penv, version);
5505 #endif /* USDT2 */
5506 jint ret = JNI_ERR;
5507 DT_RETURN_MARK(GetEnv, jint, (const jint&)ret);
5508
5509 if (!vm_created) {
5510 *penv = NULL;
5511 ret = JNI_EDETACHED;
5512 return ret;
5513 }
5514
5515 if (JniExportedInterface::GetExportedInterface(vm, penv, version, &ret)) {
5516 return ret;
5517 }
5518
5519 #ifndef JVMPI_VERSION_1
5520 // need these in order to be polite about older agents
5521 #define JVMPI_VERSION_1 ((jint)0x10000001)
5522 #define JVMPI_VERSION_1_1 ((jint)0x10000002)
5523 #define JVMPI_VERSION_1_2 ((jint)0x10000003)
5524 #endif // !JVMPI_VERSION_1
5525
5526 Thread* thread = ThreadLocalStorage::thread();
5527 if (thread != NULL && thread->is_Java_thread()) {
5528 if (Threads::is_supported_jni_version_including_1_1(version)) {
5529 *(JNIEnv**)penv = ((JavaThread*) thread)->jni_environment();
5530 ret = JNI_OK;
5531 return ret;
5532
5533 } else if (version == JVMPI_VERSION_1 ||
5534 version == JVMPI_VERSION_1_1 ||
5535 version == JVMPI_VERSION_1_2) {
5536 tty->print_cr("ERROR: JVMPI, an experimental interface, is no longer supported.");
5537 tty->print_cr("Please use the supported interface: the JVM Tool Interface (JVM TI).");
5538 ret = JNI_EVERSION;
5539 return ret;
5540 } else if (JvmtiExport::is_jvmdi_version(version)) {
5541 tty->print_cr("FATAL ERROR: JVMDI is no longer supported.");
5542 tty->print_cr("Please use the supported interface: the JVM Tool Interface (JVM TI).");
5543 ret = JNI_EVERSION;
5544 return ret;
5545 } else {
5546 *penv = NULL;
5547 ret = JNI_EVERSION;
5548 return ret;
5549 }
5550 } else {
5551 *penv = NULL;
5552 ret = JNI_EDETACHED;
5553 return ret;
5554 }
5555 }
5556
5557
5558 jint JNICALL jni_AttachCurrentThreadAsDaemon(JavaVM *vm, void **penv, void *_args) {
5559 #ifndef USDT2
5560 DTRACE_PROBE3(hotspot_jni, AttachCurrentThreadAsDaemon__entry, vm, penv, _args);
5561 #else /* USDT2 */
5562 HOTSPOT_JNI_ATTACHCURRENTTHREADASDAEMON_ENTRY(
5563 vm, penv, _args);
5564 #endif /* USDT2 */
5565 if (!vm_created) {
5566 #ifndef USDT2
5567 DTRACE_PROBE1(hotspot_jni, AttachCurrentThreadAsDaemon__return, JNI_ERR);
5568 #else /* USDT2 */
5569 HOTSPOT_JNI_ATTACHCURRENTTHREADASDAEMON_RETURN(
5570 (uint32_t) JNI_ERR);
5571 #endif /* USDT2 */
5572 return JNI_ERR;
5573 }
5574
5575 JNIWrapper("AttachCurrentThreadAsDaemon");
5576 jint ret = attach_current_thread(vm, penv, _args, true);
5577 #ifndef USDT2
5578 DTRACE_PROBE1(hotspot_jni, AttachCurrentThreadAsDaemon__return, ret);
5579 #else /* USDT2 */
5580 HOTSPOT_JNI_ATTACHCURRENTTHREADASDAEMON_RETURN(
5581 ret);
5582 #endif /* USDT2 */
5583 return ret;
5584 }
5585
5586
5587 } // End extern "C"
5588
5589 const struct JNIInvokeInterface_ jni_InvokeInterface = {
5590 NULL,
5591 NULL,
5592 NULL,
5593
5594 jni_DestroyJavaVM,
5595 jni_AttachCurrentThread,
5596 jni_DetachCurrentThread,
5597 jni_GetEnv,
5598 jni_AttachCurrentThreadAsDaemon
5599 };