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 "classfile/altHashing.hpp"
28 #include "classfile/classLoader.hpp"
29 #include "classfile/javaClasses.hpp"
30 #include "classfile/symbolTable.hpp"
31 #include "classfile/systemDictionary.hpp"
32 #include "classfile/vmSymbols.hpp"
33 #include "interpreter/linkResolver.hpp"
34 #ifndef SERIALGC
35 #include "gc_implementation/g1/g1SATBCardTableModRefBS.hpp"
36 #endif // SERIALGC
37 #include "memory/allocation.hpp"
38 #include "memory/allocation.inline.hpp"
39 #include "memory/gcLocker.inline.hpp"
40 #include "memory/oopFactory.hpp"
41 #include "memory/universe.inline.hpp"
42 #include "oops/instanceKlass.hpp"
43 #include "oops/instanceOop.hpp"
44 #include "oops/markOop.hpp"
45 #include "oops/methodOop.hpp"
46 #include "oops/objArrayKlass.hpp"
47 #include "oops/objArrayOop.hpp"
48 #include "oops/oop.inline.hpp"
49 #include "oops/symbol.hpp"
50 #include "oops/typeArrayKlass.hpp"
51 #include "oops/typeArrayOop.hpp"
52 #include "prims/jni.h"
53 #include "prims/jniCheck.hpp"
54 #include "prims/jniExport.hpp"
55 #include "prims/jniFastGetField.hpp"
56 #include "prims/jvm.h"
57 #include "prims/jvm_misc.hpp"
58 #include "prims/jvmtiExport.hpp"
59 #include "prims/jvmtiThreadState.hpp"
60 #include "runtime/compilationPolicy.hpp"
61 #include "runtime/fieldDescriptor.hpp"
62 #include "runtime/fprofiler.hpp"
63 #include "runtime/handles.inline.hpp"
64 #include "runtime/interfaceSupport.hpp"
65 #include "runtime/java.hpp"
66 #include "runtime/javaCalls.hpp"
67 #include "runtime/jfieldIDWorkaround.hpp"
68 #include "runtime/reflection.hpp"
69 #include "runtime/sharedRuntime.hpp"
70 #include "runtime/signature.hpp"
71 #include "runtime/vm_operations.hpp"
72 #include "services/runtimeService.hpp"
73 #include "trace/tracing.hpp"
74 #include "utilities/defaultStream.hpp"
75 #include "utilities/dtrace.hpp"
76 #include "utilities/events.hpp"
77 #include "utilities/histogram.hpp"
78 #ifdef TARGET_OS_FAMILY_linux
79 # include "os_linux.inline.hpp"
80 # include "thread_linux.inline.hpp"
81 #endif
82 #ifdef TARGET_OS_FAMILY_solaris
83 # include "os_solaris.inline.hpp"
84 # include "thread_solaris.inline.hpp"
85 #endif
86 #ifdef TARGET_OS_FAMILY_windows
87 # include "os_windows.inline.hpp"
88 # include "thread_windows.inline.hpp"
89 #endif
90 #ifdef TARGET_OS_FAMILY_bsd
91 # include "os_bsd.inline.hpp"
92 # include "thread_bsd.inline.hpp"
93 #endif
94
95 static jint CurrentVersion = JNI_VERSION_1_6;
96
97
98 // The DT_RETURN_MARK macros create a scoped object to fire the dtrace
99 // '-return' probe regardless of the return path is taken out of the function.
100 // Methods that have multiple return paths use this to avoid having to
101 // instrument each return path. Methods that use CHECK or THROW must use this
102 // since those macros can cause an immedate uninstrumented return.
103 //
104 // In order to get the return value, a reference to the variable containing
105 // the return value must be passed to the contructor of the object, and
106 // the return value must be set before return (since the mark object has
107 // a reference to it).
108 //
109 // Example:
110 // DT_RETURN_MARK_DECL(SomeFunc, int);
111 // JNI_ENTRY(int, SomeFunc, ...)
112 // int return_value = 0;
113 // DT_RETURN_MARK(SomeFunc, int, (const int&)return_value);
114 // foo(CHECK_0)
115 // return_value = 5;
116 // return return_value;
117 // JNI_END
118 #ifndef USDT2
119 #define DT_RETURN_MARK_DECL(name, type) \
120 HS_DTRACE_PROBE_DECL1(hotspot_jni, name##__return, type); \
121 DTRACE_ONLY( \
122 class DTraceReturnProbeMark_##name { \
123 public: \
124 const type& _ret_ref; \
125 DTraceReturnProbeMark_##name(const type& v) : _ret_ref(v) {} \
126 ~DTraceReturnProbeMark_##name() { \
127 HS_DTRACE_PROBE1(hotspot_jni, name##__return, _ret_ref); \
128 } \
129 } \
130 )
131 // Void functions are simpler since there's no return value
132 #define DT_VOID_RETURN_MARK_DECL(name) \
133 HS_DTRACE_PROBE_DECL0(hotspot_jni, name##__return); \
134 DTRACE_ONLY( \
135 class DTraceReturnProbeMark_##name { \
136 public: \
137 ~DTraceReturnProbeMark_##name() { \
138 HS_DTRACE_PROBE0(hotspot_jni, name##__return); \
139 } \
140 } \
141 )
142
143 #else /* USDT2 */
144
145 #define DT_RETURN_MARK_DECL(name, type, probe) \
146 DTRACE_ONLY( \
147 class DTraceReturnProbeMark_##name { \
148 public: \
149 const type& _ret_ref; \
150 DTraceReturnProbeMark_##name(const type& v) : _ret_ref(v) {} \
151 ~DTraceReturnProbeMark_##name() { \
152 probe; \
153 } \
154 } \
155 )
156 // Void functions are simpler since there's no return value
157 #define DT_VOID_RETURN_MARK_DECL(name, probe) \
158 DTRACE_ONLY( \
159 class DTraceReturnProbeMark_##name { \
160 public: \
161 ~DTraceReturnProbeMark_##name() { \
162 probe; \
163 } \
164 } \
165 )
166 #endif /* USDT2 */
167
168 // Place these macros in the function to mark the return. Non-void
169 // functions need the type and address of the return value.
170 #define DT_RETURN_MARK(name, type, ref) \
171 DTRACE_ONLY( DTraceReturnProbeMark_##name dtrace_return_mark(ref) )
172 #define DT_VOID_RETURN_MARK(name) \
173 DTRACE_ONLY( DTraceReturnProbeMark_##name dtrace_return_mark )
174
175
176 // Use these to select distinct code for floating-point vs. non-floating point
177 // situations. Used from within common macros where we need slightly
178 // different behavior for Float/Double
179 #define FP_SELECT_Boolean(intcode, fpcode) intcode
180 #define FP_SELECT_Byte(intcode, fpcode) intcode
181 #define FP_SELECT_Char(intcode, fpcode) intcode
182 #define FP_SELECT_Short(intcode, fpcode) intcode
183 #define FP_SELECT_Object(intcode, fpcode) intcode
184 #define FP_SELECT_Int(intcode, fpcode) intcode
185 #define FP_SELECT_Long(intcode, fpcode) intcode
186 #define FP_SELECT_Float(intcode, fpcode) fpcode
187 #define FP_SELECT_Double(intcode, fpcode) fpcode
188 #define FP_SELECT(TypeName, intcode, fpcode) \
189 FP_SELECT_##TypeName(intcode, fpcode)
190
191 #define COMMA ,
192
193 // Choose DT_RETURN_MARK macros based on the type: float/double -> void
194 // (dtrace doesn't do FP yet)
195 #ifndef USDT2
196 #define DT_RETURN_MARK_DECL_FOR(TypeName, name, type) \
197 FP_SELECT(TypeName, \
198 DT_RETURN_MARK_DECL(name, type), DT_VOID_RETURN_MARK_DECL(name) )
199 #else /* USDT2 */
200 #define DT_RETURN_MARK_DECL_FOR(TypeName, name, type, probe) \
201 FP_SELECT(TypeName, \
202 DT_RETURN_MARK_DECL(name, type, probe), DT_VOID_RETURN_MARK_DECL(name, probe) )
203 #endif /* USDT2 */
204 #define DT_RETURN_MARK_FOR(TypeName, name, type, ref) \
205 FP_SELECT(TypeName, \
206 DT_RETURN_MARK(name, type, ref), DT_VOID_RETURN_MARK(name) )
207
208
209 // out-of-line helpers for class jfieldIDWorkaround:
210
211 bool jfieldIDWorkaround::is_valid_jfieldID(klassOop k, jfieldID id) {
212 if (jfieldIDWorkaround::is_instance_jfieldID(k, id)) {
213 uintptr_t as_uint = (uintptr_t) id;
214 intptr_t offset = raw_instance_offset(id);
215 if (is_checked_jfieldID(id)) {
216 if (!klass_hash_ok(k, id)) {
217 return false;
218 }
219 }
220 return instanceKlass::cast(k)->contains_field_offset(offset);
221 } else {
222 JNIid* result = (JNIid*) id;
223 #ifdef ASSERT
224 return result != NULL && result->is_static_field_id();
225 #else
226 return result != NULL;
227 #endif
228 }
229 }
230
231
232 intptr_t jfieldIDWorkaround::encode_klass_hash(klassOop k, intptr_t offset) {
233 if (offset <= small_offset_mask) {
234 klassOop field_klass = k;
235 klassOop super_klass = Klass::cast(field_klass)->super();
236 // With compressed oops the most super class with nonstatic fields would
237 // be the owner of fields embedded in the header.
238 while (instanceKlass::cast(super_klass)->has_nonstatic_fields() &&
239 instanceKlass::cast(super_klass)->contains_field_offset(offset)) {
240 field_klass = super_klass; // super contains the field also
241 super_klass = Klass::cast(field_klass)->super();
242 }
243 debug_only(No_Safepoint_Verifier nosafepoint;)
244 uintptr_t klass_hash = field_klass->identity_hash();
245 return ((klass_hash & klass_mask) << klass_shift) | checked_mask_in_place;
246 } else {
247 #if 0
248 #ifndef PRODUCT
249 {
250 ResourceMark rm;
251 warning("VerifyJNIFields: long offset %d in %s", offset, Klass::cast(k)->external_name());
252 }
253 #endif
254 #endif
255 return 0;
256 }
257 }
258
259 bool jfieldIDWorkaround::klass_hash_ok(klassOop k, jfieldID id) {
260 uintptr_t as_uint = (uintptr_t) id;
261 intptr_t klass_hash = (as_uint >> klass_shift) & klass_mask;
262 do {
263 debug_only(No_Safepoint_Verifier nosafepoint;)
264 // Could use a non-blocking query for identity_hash here...
265 if ((k->identity_hash() & klass_mask) == klass_hash)
266 return true;
267 k = Klass::cast(k)->super();
268 } while (k != NULL);
269 return false;
270 }
271
272 void jfieldIDWorkaround::verify_instance_jfieldID(klassOop k, jfieldID id) {
273 guarantee(jfieldIDWorkaround::is_instance_jfieldID(k, id), "must be an instance field" );
274 uintptr_t as_uint = (uintptr_t) id;
275 intptr_t offset = raw_instance_offset(id);
276 if (VerifyJNIFields) {
277 if (is_checked_jfieldID(id)) {
278 guarantee(klass_hash_ok(k, id),
279 "Bug in native code: jfieldID class must match object");
280 } else {
281 #if 0
282 #ifndef PRODUCT
283 if (Verbose) {
284 ResourceMark rm;
285 warning("VerifyJNIFields: unverified offset %d for %s", offset, Klass::cast(k)->external_name());
286 }
287 #endif
288 #endif
289 }
290 }
291 guarantee(instanceKlass::cast(k)->contains_field_offset(offset),
292 "Bug in native code: jfieldID offset must address interior of object");
293 }
294
295 // Pick a reasonable higher bound for local capacity requested
296 // for EnsureLocalCapacity and PushLocalFrame. We don't want it too
297 // high because a test (or very unusual application) may try to allocate
298 // that many handles and run out of swap space. An implementation is
299 // permitted to allocate more handles than the ensured capacity, so this
300 // value is set high enough to prevent compatibility problems.
301 const int MAX_REASONABLE_LOCAL_CAPACITY = 4*K;
302
303
304 // Wrapper to trace JNI functions
305
306 #ifdef ASSERT
307 Histogram* JNIHistogram;
308 static volatile jint JNIHistogram_lock = 0;
309
310 class JNITraceWrapper : public StackObj {
311 public:
312 JNITraceWrapper(const char* format, ...) {
313 if (TraceJNICalls) {
314 va_list ap;
315 va_start(ap, format);
316 tty->print("JNI ");
317 tty->vprint_cr(format, ap);
318 va_end(ap);
319 }
320 }
321 };
322
323 class JNIHistogramElement : public HistogramElement {
324 public:
325 JNIHistogramElement(const char* name);
326 };
327
328 JNIHistogramElement::JNIHistogramElement(const char* elementName) {
329 _name = elementName;
330 uintx count = 0;
331
332 while (Atomic::cmpxchg(1, &JNIHistogram_lock, 0) != 0) {
333 while (OrderAccess::load_acquire(&JNIHistogram_lock) != 0) {
334 count +=1;
335 if ( (WarnOnStalledSpinLock > 0)
336 && (count % WarnOnStalledSpinLock == 0)) {
337 warning("JNIHistogram_lock seems to be stalled");
338 }
339 }
340 }
341
342
343 if(JNIHistogram == NULL)
344 JNIHistogram = new Histogram("JNI Call Counts",100);
345
346 JNIHistogram->add_element(this);
347 Atomic::dec(&JNIHistogram_lock);
348 }
349
350 #define JNICountWrapper(arg) \
351 static JNIHistogramElement* e = new JNIHistogramElement(arg); \
352 /* There is a MT-race condition in VC++. So we need to make sure that that e has been initialized */ \
353 if (e != NULL) e->increment_count()
354 #define JNIWrapper(arg) JNICountWrapper(arg); JNITraceWrapper(arg)
355 #else
356 #define JNIWrapper(arg)
357 #endif
358
359
360 // Implementation of JNI entries
361
362 #ifndef USDT2
363 DT_RETURN_MARK_DECL(DefineClass, jclass);
364 #else /* USDT2 */
365 DT_RETURN_MARK_DECL(DefineClass, jclass
366 , HOTSPOT_JNI_DEFINECLASS_RETURN(_ret_ref));
367 #endif /* USDT2 */
368
369 JNI_ENTRY(jclass, jni_DefineClass(JNIEnv *env, const char *name, jobject loaderRef,
370 const jbyte *buf, jsize bufLen))
371 JNIWrapper("DefineClass");
372
373 #ifndef USDT2
374 DTRACE_PROBE5(hotspot_jni, DefineClass__entry,
375 env, name, loaderRef, buf, bufLen);
376 #else /* USDT2 */
377 HOTSPOT_JNI_DEFINECLASS_ENTRY(
378 env, (char*) name, loaderRef, (char*) buf, bufLen);
379 #endif /* USDT2 */
380 jclass cls = NULL;
381 DT_RETURN_MARK(DefineClass, jclass, (const jclass&)cls);
382
383 TempNewSymbol class_name = NULL;
384 // Since exceptions can be thrown, class initialization can take place
385 // if name is NULL no check for class name in .class stream has to be made.
386 if (name != NULL) {
387 const int str_len = (int)strlen(name);
388 if (str_len > Symbol::max_length()) {
389 // It's impossible to create this class; the name cannot fit
390 // into the constant pool.
391 THROW_MSG_0(vmSymbols::java_lang_NoClassDefFoundError(), name);
392 }
393 class_name = SymbolTable::new_symbol(name, CHECK_NULL);
394 }
395 ResourceMark rm(THREAD);
396 ClassFileStream st((u1*) buf, bufLen, NULL);
397 Handle class_loader (THREAD, JNIHandles::resolve(loaderRef));
398
399 if (UsePerfData && !class_loader.is_null()) {
400 // check whether the current caller thread holds the lock or not.
401 // If not, increment the corresponding counter
402 if (ObjectSynchronizer::
403 query_lock_ownership((JavaThread*)THREAD, class_loader) !=
404 ObjectSynchronizer::owner_self) {
405 ClassLoader::sync_JNIDefineClassLockFreeCounter()->inc();
406 }
407 }
408 klassOop k = SystemDictionary::resolve_from_stream(class_name, class_loader,
409 Handle(), &st, true,
410 CHECK_NULL);
411
412 if (TraceClassResolution && k != NULL) {
413 trace_class_resolution(k);
414 }
415
416 cls = (jclass)JNIHandles::make_local(
417 env, Klass::cast(k)->java_mirror());
418 return cls;
419 JNI_END
420
421
422
423 static bool first_time_FindClass = true;
424
425 #ifndef USDT2
426 DT_RETURN_MARK_DECL(FindClass, jclass);
427 #else /* USDT2 */
428 DT_RETURN_MARK_DECL(FindClass, jclass
429 , HOTSPOT_JNI_FINDCLASS_RETURN(_ret_ref));
430 #endif /* USDT2 */
431
432 JNI_ENTRY(jclass, jni_FindClass(JNIEnv *env, const char *name))
433 JNIWrapper("FindClass");
434 #ifndef USDT2
435 DTRACE_PROBE2(hotspot_jni, FindClass__entry, env, name);
436 #else /* USDT2 */
437 HOTSPOT_JNI_FINDCLASS_ENTRY(
438 env, (char *)name);
439 #endif /* USDT2 */
440
441 jclass result = NULL;
442 DT_RETURN_MARK(FindClass, jclass, (const jclass&)result);
443
444 // Remember if we are the first invocation of jni_FindClass
445 bool first_time = first_time_FindClass;
446 first_time_FindClass = false;
447
448 // Sanity check the name: it cannot be null or larger than the maximum size
449 // name we can fit in the constant pool.
450 if (name == NULL || (int)strlen(name) > Symbol::max_length()) {
451 THROW_MSG_0(vmSymbols::java_lang_NoClassDefFoundError(), name);
452 }
453
454 //%note jni_3
455 Handle loader;
456 Handle protection_domain;
457 // Find calling class
458 instanceKlassHandle k (THREAD, thread->security_get_caller_class(0));
459 if (k.not_null()) {
460 loader = Handle(THREAD, k->class_loader());
461 // Special handling to make sure JNI_OnLoad and JNI_OnUnload are executed
462 // in the correct class context.
463 if (loader.is_null() &&
464 k->name() == vmSymbols::java_lang_ClassLoader_NativeLibrary()) {
465 JavaValue result(T_OBJECT);
466 JavaCalls::call_static(&result, k,
467 vmSymbols::getFromClass_name(),
468 vmSymbols::void_class_signature(),
469 thread);
470 if (HAS_PENDING_EXCEPTION) {
471 Handle ex(thread, thread->pending_exception());
472 CLEAR_PENDING_EXCEPTION;
473 THROW_HANDLE_0(ex);
474 }
475 oop mirror = (oop) result.get_jobject();
476 loader = Handle(THREAD,
477 instanceKlass::cast(java_lang_Class::as_klassOop(mirror))->class_loader());
478 protection_domain = Handle(THREAD,
479 instanceKlass::cast(java_lang_Class::as_klassOop(mirror))->protection_domain());
480 }
481 } else {
482 // We call ClassLoader.getSystemClassLoader to obtain the system class loader.
483 loader = Handle(THREAD, SystemDictionary::java_system_loader());
484 }
485
486 TempNewSymbol sym = SymbolTable::new_symbol(name, CHECK_NULL);
487 result = find_class_from_class_loader(env, sym, true, loader,
488 protection_domain, true, thread);
489
490 if (TraceClassResolution && result != NULL) {
491 trace_class_resolution(java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(result)));
492 }
493
494 // If we were the first invocation of jni_FindClass, we enable compilation again
495 // rather than just allowing invocation counter to overflow and decay.
496 // Controlled by flag DelayCompilationDuringStartup.
497 if (first_time && !CompileTheWorld)
498 CompilationPolicy::completed_vm_startup();
499
500 return result;
501 JNI_END
502
503 #ifndef USDT2
504 DT_RETURN_MARK_DECL(FromReflectedMethod, jmethodID);
505 #else /* USDT2 */
506 DT_RETURN_MARK_DECL(FromReflectedMethod, jmethodID
507 , HOTSPOT_JNI_FROMREFLECTEDMETHOD_RETURN((uintptr_t)_ret_ref));
508 #endif /* USDT2 */
509
510 JNI_ENTRY(jmethodID, jni_FromReflectedMethod(JNIEnv *env, jobject method))
511 JNIWrapper("FromReflectedMethod");
512 #ifndef USDT2
513 DTRACE_PROBE2(hotspot_jni, FromReflectedMethod__entry, env, method);
514 #else /* USDT2 */
515 HOTSPOT_JNI_FROMREFLECTEDMETHOD_ENTRY(
516 env, method);
517 #endif /* USDT2 */
518 jmethodID ret = NULL;
519 DT_RETURN_MARK(FromReflectedMethod, jmethodID, (const jmethodID&)ret);
520
521 // method is a handle to a java.lang.reflect.Method object
522 oop reflected = JNIHandles::resolve_non_null(method);
523 oop mirror = NULL;
524 int slot = 0;
525
526 if (reflected->klass() == SystemDictionary::reflect_Constructor_klass()) {
527 mirror = java_lang_reflect_Constructor::clazz(reflected);
528 slot = java_lang_reflect_Constructor::slot(reflected);
529 } else {
530 assert(reflected->klass() == SystemDictionary::reflect_Method_klass(), "wrong type");
531 mirror = java_lang_reflect_Method::clazz(reflected);
532 slot = java_lang_reflect_Method::slot(reflected);
533 }
534 klassOop k = java_lang_Class::as_klassOop(mirror);
535
536 KlassHandle k1(THREAD, k);
537 // Make sure class is initialized before handing id's out to methods
538 Klass::cast(k1())->initialize(CHECK_NULL);
539 methodOop m = instanceKlass::cast(k1())->method_with_idnum(slot);
540 ret = m==NULL? NULL : m->jmethod_id(); // return NULL if reflected method deleted
541 return ret;
542 JNI_END
543
544 #ifndef USDT2
545 DT_RETURN_MARK_DECL(FromReflectedField, jfieldID);
546 #else /* USDT2 */
547 DT_RETURN_MARK_DECL(FromReflectedField, jfieldID
548 , HOTSPOT_JNI_FROMREFLECTEDFIELD_RETURN((uintptr_t)_ret_ref));
549 #endif /* USDT2 */
550
551 JNI_ENTRY(jfieldID, jni_FromReflectedField(JNIEnv *env, jobject field))
552 JNIWrapper("FromReflectedField");
553 #ifndef USDT2
554 DTRACE_PROBE2(hotspot_jni, FromReflectedField__entry, env, field);
555 #else /* USDT2 */
556 HOTSPOT_JNI_FROMREFLECTEDFIELD_ENTRY(
557 env, field);
558 #endif /* USDT2 */
559 jfieldID ret = NULL;
560 DT_RETURN_MARK(FromReflectedField, jfieldID, (const jfieldID&)ret);
561
562 // field is a handle to a java.lang.reflect.Field object
563 oop reflected = JNIHandles::resolve_non_null(field);
564 oop mirror = java_lang_reflect_Field::clazz(reflected);
565 klassOop k = java_lang_Class::as_klassOop(mirror);
566 int slot = java_lang_reflect_Field::slot(reflected);
567 int modifiers = java_lang_reflect_Field::modifiers(reflected);
568
569 KlassHandle k1(THREAD, k);
570 // Make sure class is initialized before handing id's out to fields
571 Klass::cast(k1())->initialize(CHECK_NULL);
572
573 // First check if this is a static field
574 if (modifiers & JVM_ACC_STATIC) {
575 intptr_t offset = instanceKlass::cast(k1())->field_offset( slot );
576 JNIid* id = instanceKlass::cast(k1())->jni_id_for(offset);
577 assert(id != NULL, "corrupt Field object");
578 debug_only(id->set_is_static_field_id();)
579 // A jfieldID for a static field is a JNIid specifying the field holder and the offset within the klassOop
580 ret = jfieldIDWorkaround::to_static_jfieldID(id);
581 return ret;
582 }
583
584 // The slot is the index of the field description in the field-array
585 // The jfieldID is the offset of the field within the object
586 // It may also have hash bits for k, if VerifyJNIFields is turned on.
587 intptr_t offset = instanceKlass::cast(k1())->field_offset( slot );
588 assert(instanceKlass::cast(k1())->contains_field_offset(offset), "stay within object");
589 ret = jfieldIDWorkaround::to_instance_jfieldID(k1(), offset);
590 return ret;
591 JNI_END
592
593 #ifndef USDT2
594 DT_RETURN_MARK_DECL(ToReflectedMethod, jobject);
595 #else /* USDT2 */
596 DT_RETURN_MARK_DECL(ToReflectedMethod, jobject
597 , HOTSPOT_JNI_TOREFLECTEDMETHOD_RETURN(_ret_ref));
598 #endif /* USDT2 */
599
600 JNI_ENTRY(jobject, jni_ToReflectedMethod(JNIEnv *env, jclass cls, jmethodID method_id, jboolean isStatic))
601 JNIWrapper("ToReflectedMethod");
602 #ifndef USDT2
603 DTRACE_PROBE4(hotspot_jni, ToReflectedMethod__entry, env, cls, method_id, isStatic);
604 #else /* USDT2 */
605 HOTSPOT_JNI_TOREFLECTEDMETHOD_ENTRY(
606 env, cls, (uintptr_t) method_id, isStatic);
607 #endif /* USDT2 */
608 jobject ret = NULL;
609 DT_RETURN_MARK(ToReflectedMethod, jobject, (const jobject&)ret);
610
611 methodHandle m (THREAD, JNIHandles::resolve_jmethod_id(method_id));
612 assert(m->is_static() == (isStatic != 0), "jni_ToReflectedMethod access flags doesn't match");
613 oop reflection_method;
614 if (m->is_initializer()) {
615 reflection_method = Reflection::new_constructor(m, CHECK_NULL);
616 } else {
617 reflection_method = Reflection::new_method(m, UseNewReflection, false, CHECK_NULL);
618 }
619 ret = JNIHandles::make_local(env, reflection_method);
620 return ret;
621 JNI_END
622
623 #ifndef USDT2
624 DT_RETURN_MARK_DECL(GetSuperclass, jclass);
625 #else /* USDT2 */
626 DT_RETURN_MARK_DECL(GetSuperclass, jclass
627 , HOTSPOT_JNI_GETSUPERCLASS_RETURN(_ret_ref));
628 #endif /* USDT2 */
629
630 JNI_ENTRY(jclass, jni_GetSuperclass(JNIEnv *env, jclass sub))
631 JNIWrapper("GetSuperclass");
632 #ifndef USDT2
633 DTRACE_PROBE2(hotspot_jni, GetSuperclass__entry, env, sub);
634 #else /* USDT2 */
635 HOTSPOT_JNI_GETSUPERCLASS_ENTRY(
636 env, sub);
637 #endif /* USDT2 */
638 jclass obj = NULL;
639 DT_RETURN_MARK(GetSuperclass, jclass, (const jclass&)obj);
640
641 oop mirror = JNIHandles::resolve_non_null(sub);
642 // primitive classes return NULL
643 if (java_lang_Class::is_primitive(mirror)) return NULL;
644
645 // Rules of Class.getSuperClass as implemented by KLass::java_super:
646 // arrays return Object
647 // interfaces return NULL
648 // proper classes return Klass::super()
649 klassOop k = java_lang_Class::as_klassOop(mirror);
650 if (Klass::cast(k)->is_interface()) return NULL;
651
652 // return mirror for superclass
653 klassOop super = Klass::cast(k)->java_super();
654 // super2 is the value computed by the compiler's getSuperClass intrinsic:
655 debug_only(klassOop super2 = ( Klass::cast(k)->oop_is_javaArray()
656 ? SystemDictionary::Object_klass()
657 : Klass::cast(k)->super() ) );
658 assert(super == super2,
659 "java_super computation depends on interface, array, other super");
660 obj = (super == NULL) ? NULL : (jclass) JNIHandles::make_local(Klass::cast(super)->java_mirror());
661 return obj;
662 JNI_END
663
664 JNI_QUICK_ENTRY(jboolean, jni_IsAssignableFrom(JNIEnv *env, jclass sub, jclass super))
665 JNIWrapper("IsSubclassOf");
666 #ifndef USDT2
667 DTRACE_PROBE3(hotspot_jni, IsAssignableFrom__entry, env, sub, super);
668 #else /* USDT2 */
669 HOTSPOT_JNI_ISASSIGNABLEFROM_ENTRY(
670 env, sub, super);
671 #endif /* USDT2 */
672 oop sub_mirror = JNIHandles::resolve_non_null(sub);
673 oop super_mirror = JNIHandles::resolve_non_null(super);
674 if (java_lang_Class::is_primitive(sub_mirror) ||
675 java_lang_Class::is_primitive(super_mirror)) {
676 jboolean ret = (sub_mirror == super_mirror);
677 #ifndef USDT2
678 DTRACE_PROBE1(hotspot_jni, IsAssignableFrom__return, ret);
679 #else /* USDT2 */
680 HOTSPOT_JNI_ISASSIGNABLEFROM_RETURN(
681 ret);
682 #endif /* USDT2 */
683 return ret;
684 }
685 klassOop sub_klass = java_lang_Class::as_klassOop(sub_mirror);
686 klassOop super_klass = java_lang_Class::as_klassOop(super_mirror);
687 assert(sub_klass != NULL && super_klass != NULL, "invalid arguments to jni_IsAssignableFrom");
688 jboolean ret = Klass::cast(sub_klass)->is_subtype_of(super_klass) ?
689 JNI_TRUE : JNI_FALSE;
690 #ifndef USDT2
691 DTRACE_PROBE1(hotspot_jni, IsAssignableFrom__return, ret);
692 #else /* USDT2 */
693 HOTSPOT_JNI_ISASSIGNABLEFROM_RETURN(
694 ret);
695 #endif /* USDT2 */
696 return ret;
697 JNI_END
698
699 #ifndef USDT2
700 DT_RETURN_MARK_DECL(Throw, jint);
701 #else /* USDT2 */
702 DT_RETURN_MARK_DECL(Throw, jint
703 , HOTSPOT_JNI_THROW_RETURN(_ret_ref));
704 #endif /* USDT2 */
705
706 JNI_ENTRY(jint, jni_Throw(JNIEnv *env, jthrowable obj))
707 JNIWrapper("Throw");
708 #ifndef USDT2
709 DTRACE_PROBE2(hotspot_jni, Throw__entry, env, obj);
710 #else /* USDT2 */
711 HOTSPOT_JNI_THROW_ENTRY(
712 env, obj);
713 #endif /* USDT2 */
714 jint ret = JNI_OK;
715 DT_RETURN_MARK(Throw, jint, (const jint&)ret);
716
717 THROW_OOP_(JNIHandles::resolve(obj), JNI_OK);
718 ShouldNotReachHere();
719 JNI_END
720
721 #ifndef USDT2
722 DT_RETURN_MARK_DECL(ThrowNew, jint);
723 #else /* USDT2 */
724 DT_RETURN_MARK_DECL(ThrowNew, jint
725 , HOTSPOT_JNI_THROWNEW_RETURN(_ret_ref));
726 #endif /* USDT2 */
727
728 JNI_ENTRY(jint, jni_ThrowNew(JNIEnv *env, jclass clazz, const char *message))
729 JNIWrapper("ThrowNew");
730 #ifndef USDT2
731 DTRACE_PROBE3(hotspot_jni, ThrowNew__entry, env, clazz, message);
732 #else /* USDT2 */
733 HOTSPOT_JNI_THROWNEW_ENTRY(
734 env, clazz, (char *) message);
735 #endif /* USDT2 */
736 jint ret = JNI_OK;
737 DT_RETURN_MARK(ThrowNew, jint, (const jint&)ret);
738
739 instanceKlass* k = instanceKlass::cast(java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(clazz)));
740 Symbol* name = k->name();
741 Handle class_loader (THREAD, k->class_loader());
742 Handle protection_domain (THREAD, k->protection_domain());
743 THROW_MSG_LOADER_(name, (char *)message, class_loader, protection_domain, JNI_OK);
744 ShouldNotReachHere();
745 JNI_END
746
747
748 // JNI functions only transform a pending async exception to a synchronous
749 // exception in ExceptionOccurred and ExceptionCheck calls, since
750 // delivering an async exception in other places won't change the native
751 // code's control flow and would be harmful when native code further calls
752 // JNI functions with a pending exception. Async exception is also checked
753 // during the call, so ExceptionOccurred/ExceptionCheck won't return
754 // false but deliver the async exception at the very end during
755 // state transition.
756
757 static void jni_check_async_exceptions(JavaThread *thread) {
758 assert(thread == Thread::current(), "must be itself");
759 thread->check_and_handle_async_exceptions();
760 }
761
762 JNI_ENTRY_NO_PRESERVE(jthrowable, jni_ExceptionOccurred(JNIEnv *env))
763 JNIWrapper("ExceptionOccurred");
764 #ifndef USDT2
765 DTRACE_PROBE1(hotspot_jni, ExceptionOccurred__entry, env);
766 #else /* USDT2 */
767 HOTSPOT_JNI_EXCEPTIONOCCURRED_ENTRY(
768 env);
769 #endif /* USDT2 */
770 jni_check_async_exceptions(thread);
771 oop exception = thread->pending_exception();
772 jthrowable ret = (jthrowable) JNIHandles::make_local(env, exception);
773 #ifndef USDT2
774 DTRACE_PROBE1(hotspot_jni, ExceptionOccurred__return, ret);
775 #else /* USDT2 */
776 HOTSPOT_JNI_EXCEPTIONOCCURRED_RETURN(
777 ret);
778 #endif /* USDT2 */
779 return ret;
780 JNI_END
781
782
783 JNI_ENTRY_NO_PRESERVE(void, jni_ExceptionDescribe(JNIEnv *env))
784 JNIWrapper("ExceptionDescribe");
785 #ifndef USDT2
786 DTRACE_PROBE1(hotspot_jni, ExceptionDescribe__entry, env);
787 #else /* USDT2 */
788 HOTSPOT_JNI_EXCEPTIONDESCRIBE_ENTRY(
789 env);
790 #endif /* USDT2 */
791 if (thread->has_pending_exception()) {
792 Handle ex(thread, thread->pending_exception());
793 thread->clear_pending_exception();
794 if (ex->is_a(SystemDictionary::ThreadDeath_klass())) {
795 // Don't print anything if we are being killed.
796 } else {
797 jio_fprintf(defaultStream::error_stream(), "Exception ");
798 if (thread != NULL && thread->threadObj() != NULL) {
799 ResourceMark rm(THREAD);
800 jio_fprintf(defaultStream::error_stream(),
801 "in thread \"%s\" ", thread->get_thread_name());
802 }
803 if (ex->is_a(SystemDictionary::Throwable_klass())) {
804 JavaValue result(T_VOID);
805 JavaCalls::call_virtual(&result,
806 ex,
807 KlassHandle(THREAD,
808 SystemDictionary::Throwable_klass()),
809 vmSymbols::printStackTrace_name(),
810 vmSymbols::void_method_signature(),
811 THREAD);
812 // If an exception is thrown in the call it gets thrown away. Not much
813 // we can do with it. The native code that calls this, does not check
814 // for the exception - hence, it might still be in the thread when DestroyVM gets
815 // called, potentially causing a few asserts to trigger - since no pending exception
816 // is expected.
817 CLEAR_PENDING_EXCEPTION;
818 } else {
819 ResourceMark rm(THREAD);
820 jio_fprintf(defaultStream::error_stream(),
821 ". Uncaught exception of type %s.",
822 Klass::cast(ex->klass())->external_name());
823 }
824 }
825 }
826 #ifndef USDT2
827 DTRACE_PROBE(hotspot_jni, ExceptionDescribe__return);
828 #else /* USDT2 */
829 HOTSPOT_JNI_EXCEPTIONDESCRIBE_RETURN(
830 );
831 #endif /* USDT2 */
832 JNI_END
833
834
835 JNI_QUICK_ENTRY(void, jni_ExceptionClear(JNIEnv *env))
836 JNIWrapper("ExceptionClear");
837 #ifndef USDT2
838 DTRACE_PROBE1(hotspot_jni, ExceptionClear__entry, env);
839 #else /* USDT2 */
840 HOTSPOT_JNI_EXCEPTIONCLEAR_ENTRY(
841 env);
842 #endif /* USDT2 */
843
844 // The jni code might be using this API to clear java thrown exception.
845 // So just mark jvmti thread exception state as exception caught.
846 JvmtiThreadState *state = JavaThread::current()->jvmti_thread_state();
847 if (state != NULL && state->is_exception_detected()) {
848 state->set_exception_caught();
849 }
850 thread->clear_pending_exception();
851 #ifndef USDT2
852 DTRACE_PROBE(hotspot_jni, ExceptionClear__return);
853 #else /* USDT2 */
854 HOTSPOT_JNI_EXCEPTIONCLEAR_RETURN(
855 );
856 #endif /* USDT2 */
857 JNI_END
858
859
860 JNI_ENTRY(void, jni_FatalError(JNIEnv *env, const char *msg))
861 JNIWrapper("FatalError");
862 #ifndef USDT2
863 DTRACE_PROBE2(hotspot_jni, FatalError__entry, env, msg);
864 #else /* USDT2 */
865 HOTSPOT_JNI_FATALERROR_ENTRY(
866 env, (char *) msg);
867 #endif /* USDT2 */
868 tty->print_cr("FATAL ERROR in native method: %s", msg);
869 thread->print_stack();
870 os::abort(); // Dump core and abort
871 JNI_END
872
873
874 JNI_ENTRY(jint, jni_PushLocalFrame(JNIEnv *env, jint capacity))
875 JNIWrapper("PushLocalFrame");
876 #ifndef USDT2
877 DTRACE_PROBE2(hotspot_jni, PushLocalFrame__entry, env, capacity);
878 #else /* USDT2 */
879 HOTSPOT_JNI_PUSHLOCALFRAME_ENTRY(
880 env, capacity);
881 #endif /* USDT2 */
882 //%note jni_11
883 if (capacity < 0 && capacity > MAX_REASONABLE_LOCAL_CAPACITY) {
884 #ifndef USDT2
885 DTRACE_PROBE1(hotspot_jni, PushLocalFrame__return, JNI_ERR);
886 #else /* USDT2 */
887 HOTSPOT_JNI_PUSHLOCALFRAME_RETURN(
888 (uint32_t)JNI_ERR);
889 #endif /* USDT2 */
890 return JNI_ERR;
891 }
892 JNIHandleBlock* old_handles = thread->active_handles();
893 JNIHandleBlock* new_handles = JNIHandleBlock::allocate_block(thread);
894 assert(new_handles != NULL, "should not be NULL");
895 new_handles->set_pop_frame_link(old_handles);
896 thread->set_active_handles(new_handles);
897 jint ret = JNI_OK;
898 #ifndef USDT2
899 DTRACE_PROBE1(hotspot_jni, PushLocalFrame__return, ret);
900 #else /* USDT2 */
901 HOTSPOT_JNI_PUSHLOCALFRAME_RETURN(
902 ret);
903 #endif /* USDT2 */
904 return ret;
905 JNI_END
906
907
908 JNI_ENTRY(jobject, jni_PopLocalFrame(JNIEnv *env, jobject result))
909 JNIWrapper("PopLocalFrame");
910 #ifndef USDT2
911 DTRACE_PROBE2(hotspot_jni, PopLocalFrame__entry, env, result);
912 #else /* USDT2 */
913 HOTSPOT_JNI_POPLOCALFRAME_ENTRY(
914 env, result);
915 #endif /* USDT2 */
916 //%note jni_11
917 Handle result_handle(thread, JNIHandles::resolve(result));
918 JNIHandleBlock* old_handles = thread->active_handles();
919 JNIHandleBlock* new_handles = old_handles->pop_frame_link();
920 if (new_handles != NULL) {
921 // As a sanity check we only release the handle blocks if the pop_frame_link is not NULL.
922 // This way code will still work if PopLocalFrame is called without a corresponding
923 // PushLocalFrame call. Note that we set the pop_frame_link to NULL explicitly, otherwise
924 // the release_block call will release the blocks.
925 thread->set_active_handles(new_handles);
926 old_handles->set_pop_frame_link(NULL); // clear link we won't release new_handles below
927 JNIHandleBlock::release_block(old_handles, thread); // may block
928 result = JNIHandles::make_local(thread, result_handle());
929 }
930 #ifndef USDT2
931 DTRACE_PROBE1(hotspot_jni, PopLocalFrame__return, result);
932 #else /* USDT2 */
933 HOTSPOT_JNI_POPLOCALFRAME_RETURN(
934 result);
935 #endif /* USDT2 */
936 return result;
937 JNI_END
938
939
940 JNI_ENTRY(jobject, jni_NewGlobalRef(JNIEnv *env, jobject ref))
941 JNIWrapper("NewGlobalRef");
942 #ifndef USDT2
943 DTRACE_PROBE2(hotspot_jni, NewGlobalRef__entry, env, ref);
944 #else /* USDT2 */
945 HOTSPOT_JNI_NEWGLOBALREF_ENTRY(
946 env, ref);
947 #endif /* USDT2 */
948 Handle ref_handle(thread, JNIHandles::resolve(ref));
949 jobject ret = JNIHandles::make_global(ref_handle);
950 #ifndef USDT2
951 DTRACE_PROBE1(hotspot_jni, NewGlobalRef__return, ret);
952 #else /* USDT2 */
953 HOTSPOT_JNI_NEWGLOBALREF_RETURN(
954 ret);
955 #endif /* USDT2 */
956 return ret;
957 JNI_END
958
959 // Must be JNI_ENTRY (with HandleMark)
960 JNI_ENTRY_NO_PRESERVE(void, jni_DeleteGlobalRef(JNIEnv *env, jobject ref))
961 JNIWrapper("DeleteGlobalRef");
962 #ifndef USDT2
963 DTRACE_PROBE2(hotspot_jni, DeleteGlobalRef__entry, env, ref);
964 #else /* USDT2 */
965 HOTSPOT_JNI_DELETEGLOBALREF_ENTRY(
966 env, ref);
967 #endif /* USDT2 */
968 JNIHandles::destroy_global(ref);
969 #ifndef USDT2
970 DTRACE_PROBE(hotspot_jni, DeleteGlobalRef__return);
971 #else /* USDT2 */
972 HOTSPOT_JNI_DELETEGLOBALREF_RETURN(
973 );
974 #endif /* USDT2 */
975 JNI_END
976
977 JNI_QUICK_ENTRY(void, jni_DeleteLocalRef(JNIEnv *env, jobject obj))
978 JNIWrapper("DeleteLocalRef");
979 #ifndef USDT2
980 DTRACE_PROBE2(hotspot_jni, DeleteLocalRef__entry, env, obj);
981 #else /* USDT2 */
982 HOTSPOT_JNI_DELETELOCALREF_ENTRY(
983 env, obj);
984 #endif /* USDT2 */
985 JNIHandles::destroy_local(obj);
986 #ifndef USDT2
987 DTRACE_PROBE(hotspot_jni, DeleteLocalRef__return);
988 #else /* USDT2 */
989 HOTSPOT_JNI_DELETELOCALREF_RETURN(
990 );
991 #endif /* USDT2 */
992 JNI_END
993
994 JNI_QUICK_ENTRY(jboolean, jni_IsSameObject(JNIEnv *env, jobject r1, jobject r2))
995 JNIWrapper("IsSameObject");
996 #ifndef USDT2
997 DTRACE_PROBE3(hotspot_jni, IsSameObject__entry, env, r1, r2);
998 #else /* USDT2 */
999 HOTSPOT_JNI_ISSAMEOBJECT_ENTRY(
1000 env, r1, r2);
1001 #endif /* USDT2 */
1002 oop a = JNIHandles::resolve(r1);
1003 oop b = JNIHandles::resolve(r2);
1004 jboolean ret = (a == b) ? JNI_TRUE : JNI_FALSE;
1005 #ifndef USDT2
1006 DTRACE_PROBE1(hotspot_jni, IsSameObject__return, ret);
1007 #else /* USDT2 */
1008 HOTSPOT_JNI_ISSAMEOBJECT_RETURN(
1009 ret);
1010 #endif /* USDT2 */
1011 return ret;
1012 JNI_END
1013
1014
1015 JNI_ENTRY(jobject, jni_NewLocalRef(JNIEnv *env, jobject ref))
1016 JNIWrapper("NewLocalRef");
1017 #ifndef USDT2
1018 DTRACE_PROBE2(hotspot_jni, NewLocalRef__entry, env, ref);
1019 #else /* USDT2 */
1020 HOTSPOT_JNI_NEWLOCALREF_ENTRY(
1021 env, ref);
1022 #endif /* USDT2 */
1023 jobject ret = JNIHandles::make_local(env, JNIHandles::resolve(ref));
1024 #ifndef USDT2
1025 DTRACE_PROBE1(hotspot_jni, NewLocalRef__return, ret);
1026 #else /* USDT2 */
1027 HOTSPOT_JNI_NEWLOCALREF_RETURN(
1028 ret);
1029 #endif /* USDT2 */
1030 return ret;
1031 JNI_END
1032
1033 JNI_LEAF(jint, jni_EnsureLocalCapacity(JNIEnv *env, jint capacity))
1034 JNIWrapper("EnsureLocalCapacity");
1035 #ifndef USDT2
1036 DTRACE_PROBE2(hotspot_jni, EnsureLocalCapacity__entry, env, capacity);
1037 #else /* USDT2 */
1038 HOTSPOT_JNI_ENSURELOCALCAPACITY_ENTRY(
1039 env, capacity);
1040 #endif /* USDT2 */
1041 jint ret;
1042 if (capacity >= 0 && capacity <= MAX_REASONABLE_LOCAL_CAPACITY) {
1043 ret = JNI_OK;
1044 } else {
1045 ret = JNI_ERR;
1046 }
1047 #ifndef USDT2
1048 DTRACE_PROBE1(hotspot_jni, EnsureLocalCapacity__return, ret);
1049 #else /* USDT2 */
1050 HOTSPOT_JNI_ENSURELOCALCAPACITY_RETURN(
1051 ret);
1052 #endif /* USDT2 */
1053 return ret;
1054 JNI_END
1055
1056 // Return the Handle Type
1057 JNI_LEAF(jobjectRefType, jni_GetObjectRefType(JNIEnv *env, jobject obj))
1058 JNIWrapper("GetObjectRefType");
1059 #ifndef USDT2
1060 DTRACE_PROBE2(hotspot_jni, GetObjectRefType__entry, env, obj);
1061 #else /* USDT2 */
1062 HOTSPOT_JNI_GETOBJECTREFTYPE_ENTRY(
1063 env, obj);
1064 #endif /* USDT2 */
1065 jobjectRefType ret;
1066 if (JNIHandles::is_local_handle(thread, obj) ||
1067 JNIHandles::is_frame_handle(thread, obj))
1068 ret = JNILocalRefType;
1069 else if (JNIHandles::is_global_handle(obj))
1070 ret = JNIGlobalRefType;
1071 else if (JNIHandles::is_weak_global_handle(obj))
1072 ret = JNIWeakGlobalRefType;
1073 else
1074 ret = JNIInvalidRefType;
1075 #ifndef USDT2
1076 DTRACE_PROBE1(hotspot_jni, GetObjectRefType__return, ret);
1077 #else /* USDT2 */
1078 HOTSPOT_JNI_GETOBJECTREFTYPE_RETURN(
1079 (void *) ret);
1080 #endif /* USDT2 */
1081 return ret;
1082 JNI_END
1083
1084
1085 class JNI_ArgumentPusher : public SignatureIterator {
1086 protected:
1087 JavaCallArguments* _arguments;
1088
1089 virtual void get_bool () = 0;
1090 virtual void get_char () = 0;
1091 virtual void get_short () = 0;
1092 virtual void get_byte () = 0;
1093 virtual void get_int () = 0;
1094 virtual void get_long () = 0;
1095 virtual void get_float () = 0;
1096 virtual void get_double () = 0;
1097 virtual void get_object () = 0;
1098
1099 JNI_ArgumentPusher(Symbol* signature) : SignatureIterator(signature) {
1100 this->_return_type = T_ILLEGAL;
1101 _arguments = NULL;
1102 }
1103
1104 public:
1105 virtual void iterate( uint64_t fingerprint ) = 0;
1106
1107 void set_java_argument_object(JavaCallArguments *arguments) { _arguments = arguments; }
1108
1109 inline void do_bool() { if (!is_return_type()) get_bool(); }
1110 inline void do_char() { if (!is_return_type()) get_char(); }
1111 inline void do_short() { if (!is_return_type()) get_short(); }
1112 inline void do_byte() { if (!is_return_type()) get_byte(); }
1113 inline void do_int() { if (!is_return_type()) get_int(); }
1114 inline void do_long() { if (!is_return_type()) get_long(); }
1115 inline void do_float() { if (!is_return_type()) get_float(); }
1116 inline void do_double() { if (!is_return_type()) get_double(); }
1117 inline void do_object(int begin, int end) { if (!is_return_type()) get_object(); }
1118 inline void do_array(int begin, int end) { if (!is_return_type()) get_object(); } // do_array uses get_object -- there is no get_array
1119 inline void do_void() { }
1120
1121 JavaCallArguments* arguments() { return _arguments; }
1122 void push_receiver(Handle h) { _arguments->push_oop(h); }
1123 };
1124
1125
1126 class JNI_ArgumentPusherVaArg : public JNI_ArgumentPusher {
1127 protected:
1128 va_list _ap;
1129
1130 inline void get_bool() { _arguments->push_int(va_arg(_ap, jint)); } // bool is coerced to int when using va_arg
1131 inline void get_char() { _arguments->push_int(va_arg(_ap, jint)); } // char is coerced to int when using va_arg
1132 inline void get_short() { _arguments->push_int(va_arg(_ap, jint)); } // short is coerced to int when using va_arg
1133 inline void get_byte() { _arguments->push_int(va_arg(_ap, jint)); } // byte is coerced to int when using va_arg
1134 inline void get_int() { _arguments->push_int(va_arg(_ap, jint)); }
1135
1136 // each of these paths is exercized by the various jck Call[Static,Nonvirtual,][Void,Int,..]Method[A,V,] tests
1137
1138 inline void get_long() { _arguments->push_long(va_arg(_ap, jlong)); }
1139 inline void get_float() { _arguments->push_float((jfloat)va_arg(_ap, jdouble)); } // float is coerced to double w/ va_arg
1140 inline void get_double() { _arguments->push_double(va_arg(_ap, jdouble)); }
1141 inline void get_object() { jobject l = va_arg(_ap, jobject);
1142 _arguments->push_oop(Handle((oop *)l, false)); }
1143
1144 inline void set_ap(va_list rap) {
1145 #ifdef va_copy
1146 va_copy(_ap, rap);
1147 #elif defined (__va_copy)
1148 __va_copy(_ap, rap);
1149 #else
1150 _ap = rap;
1151 #endif
1152 }
1153
1154 public:
1155 JNI_ArgumentPusherVaArg(Symbol* signature, va_list rap)
1156 : JNI_ArgumentPusher(signature) {
1157 set_ap(rap);
1158 }
1159 JNI_ArgumentPusherVaArg(jmethodID method_id, va_list rap)
1160 : JNI_ArgumentPusher(JNIHandles::resolve_jmethod_id(method_id)->signature()) {
1161 set_ap(rap);
1162 }
1163
1164 // Optimized path if we have the bitvector form of signature
1165 void iterate( uint64_t fingerprint ) {
1166 if ( fingerprint == UCONST64(-1) ) SignatureIterator::iterate();// Must be too many arguments
1167 else {
1168 _return_type = (BasicType)((fingerprint >> static_feature_size) &
1169 result_feature_mask);
1170
1171 assert(fingerprint, "Fingerprint should not be 0");
1172 fingerprint = fingerprint >> (static_feature_size + result_feature_size);
1173 while ( 1 ) {
1174 switch ( fingerprint & parameter_feature_mask ) {
1175 case bool_parm:
1176 case char_parm:
1177 case short_parm:
1178 case byte_parm:
1179 case int_parm:
1180 get_int();
1181 break;
1182 case obj_parm:
1183 get_object();
1184 break;
1185 case long_parm:
1186 get_long();
1187 break;
1188 case float_parm:
1189 get_float();
1190 break;
1191 case double_parm:
1192 get_double();
1193 break;
1194 case done_parm:
1195 return;
1196 break;
1197 default:
1198 ShouldNotReachHere();
1199 break;
1200 }
1201 fingerprint >>= parameter_feature_size;
1202 }
1203 }
1204 }
1205 };
1206
1207
1208 class JNI_ArgumentPusherArray : public JNI_ArgumentPusher {
1209 protected:
1210 const jvalue *_ap;
1211
1212 inline void get_bool() { _arguments->push_int((jint)(_ap++)->z); }
1213 inline void get_char() { _arguments->push_int((jint)(_ap++)->c); }
1214 inline void get_short() { _arguments->push_int((jint)(_ap++)->s); }
1215 inline void get_byte() { _arguments->push_int((jint)(_ap++)->b); }
1216 inline void get_int() { _arguments->push_int((jint)(_ap++)->i); }
1217
1218 inline void get_long() { _arguments->push_long((_ap++)->j); }
1219 inline void get_float() { _arguments->push_float((_ap++)->f); }
1220 inline void get_double() { _arguments->push_double((_ap++)->d);}
1221 inline void get_object() { _arguments->push_oop(Handle((oop *)(_ap++)->l, false)); }
1222
1223 inline void set_ap(const jvalue *rap) { _ap = rap; }
1224
1225 public:
1226 JNI_ArgumentPusherArray(Symbol* signature, const jvalue *rap)
1227 : JNI_ArgumentPusher(signature) {
1228 set_ap(rap);
1229 }
1230 JNI_ArgumentPusherArray(jmethodID method_id, const jvalue *rap)
1231 : JNI_ArgumentPusher(JNIHandles::resolve_jmethod_id(method_id)->signature()) {
1232 set_ap(rap);
1233 }
1234
1235 // Optimized path if we have the bitvector form of signature
1236 void iterate( uint64_t fingerprint ) {
1237 if ( fingerprint == UCONST64(-1) ) SignatureIterator::iterate(); // Must be too many arguments
1238 else {
1239 _return_type = (BasicType)((fingerprint >> static_feature_size) &
1240 result_feature_mask);
1241 assert(fingerprint, "Fingerprint should not be 0");
1242 fingerprint = fingerprint >> (static_feature_size + result_feature_size);
1243 while ( 1 ) {
1244 switch ( fingerprint & parameter_feature_mask ) {
1245 case bool_parm:
1246 get_bool();
1247 break;
1248 case char_parm:
1249 get_char();
1250 break;
1251 case short_parm:
1252 get_short();
1253 break;
1254 case byte_parm:
1255 get_byte();
1256 break;
1257 case int_parm:
1258 get_int();
1259 break;
1260 case obj_parm:
1261 get_object();
1262 break;
1263 case long_parm:
1264 get_long();
1265 break;
1266 case float_parm:
1267 get_float();
1268 break;
1269 case double_parm:
1270 get_double();
1271 break;
1272 case done_parm:
1273 return;
1274 break;
1275 default:
1276 ShouldNotReachHere();
1277 break;
1278 }
1279 fingerprint >>= parameter_feature_size;
1280 }
1281 }
1282 }
1283 };
1284
1285
1286 enum JNICallType {
1287 JNI_STATIC,
1288 JNI_VIRTUAL,
1289 JNI_NONVIRTUAL
1290 };
1291
1292 static methodHandle jni_resolve_interface_call(Handle recv, methodHandle method, TRAPS) {
1293 assert(!method.is_null() , "method should not be null");
1294
1295 KlassHandle recv_klass; // Default to NULL (use of ?: can confuse gcc)
1296 if (recv.not_null()) recv_klass = KlassHandle(THREAD, recv->klass());
1297 KlassHandle spec_klass (THREAD, method->method_holder());
1298 Symbol* name = method->name();
1299 Symbol* signature = method->signature();
1300 CallInfo info;
1301 LinkResolver::resolve_interface_call(info, recv, recv_klass, spec_klass, name, signature, KlassHandle(), false, true, CHECK_(methodHandle()));
1302 return info.selected_method();
1303 }
1304
1305 static methodHandle jni_resolve_virtual_call(Handle recv, methodHandle method, TRAPS) {
1306 assert(!method.is_null() , "method should not be null");
1307
1308 KlassHandle recv_klass; // Default to NULL (use of ?: can confuse gcc)
1309 if (recv.not_null()) recv_klass = KlassHandle(THREAD, recv->klass());
1310 KlassHandle spec_klass (THREAD, method->method_holder());
1311 Symbol* name = method->name();
1312 Symbol* signature = method->signature();
1313 CallInfo info;
1314 LinkResolver::resolve_virtual_call(info, recv, recv_klass, spec_klass, name, signature, KlassHandle(), false, true, CHECK_(methodHandle()));
1315 return info.selected_method();
1316 }
1317
1318
1319
1320 static void jni_invoke_static(JNIEnv *env, JavaValue* result, jobject receiver, JNICallType call_type, jmethodID method_id, JNI_ArgumentPusher *args, TRAPS) {
1321 methodHandle method(THREAD, JNIHandles::resolve_jmethod_id(method_id));
1322
1323 // Create object to hold arguments for the JavaCall, and associate it with
1324 // the jni parser
1325 ResourceMark rm(THREAD);
1326 int number_of_parameters = method->size_of_parameters();
1327 JavaCallArguments java_args(number_of_parameters);
1328 args->set_java_argument_object(&java_args);
1329
1330 assert(method->is_static(), "method should be static");
1331
1332 // Fill out JavaCallArguments object
1333 args->iterate( Fingerprinter(method).fingerprint() );
1334 // Initialize result type
1335 result->set_type(args->get_ret_type());
1336
1337 // Invoke the method. Result is returned as oop.
1338 JavaCalls::call(result, method, &java_args, CHECK);
1339
1340 // Convert result
1341 if (result->get_type() == T_OBJECT || result->get_type() == T_ARRAY) {
1342 result->set_jobject(JNIHandles::make_local(env, (oop) result->get_jobject()));
1343 }
1344 }
1345
1346
1347 static void jni_invoke_nonstatic(JNIEnv *env, JavaValue* result, jobject receiver, JNICallType call_type, jmethodID method_id, JNI_ArgumentPusher *args, TRAPS) {
1348 oop recv = JNIHandles::resolve(receiver);
1349 if (recv == NULL) {
1350 THROW(vmSymbols::java_lang_NullPointerException());
1351 }
1352 Handle h_recv(THREAD, recv);
1353
1354 int number_of_parameters;
1355 methodOop selected_method;
1356 {
1357 methodOop m = JNIHandles::resolve_jmethod_id(method_id);
1358 number_of_parameters = m->size_of_parameters();
1359 klassOop holder = m->method_holder();
1360 if (!(Klass::cast(holder))->is_interface()) {
1361 // non-interface call -- for that little speed boost, don't handlize
1362 debug_only(No_Safepoint_Verifier nosafepoint;)
1363 if (call_type == JNI_VIRTUAL) {
1364 // jni_GetMethodID makes sure class is linked and initialized
1365 // so m should have a valid vtable index.
1366 int vtbl_index = m->vtable_index();
1367 if (vtbl_index != methodOopDesc::nonvirtual_vtable_index) {
1368 klassOop k = h_recv->klass();
1369 // k might be an arrayKlassOop but all vtables start at
1370 // the same place. The cast is to avoid virtual call and assertion.
1371 instanceKlass *ik = (instanceKlass*)k->klass_part();
1372 selected_method = ik->method_at_vtable(vtbl_index);
1373 } else {
1374 // final method
1375 selected_method = m;
1376 }
1377 } else {
1378 // JNI_NONVIRTUAL call
1379 selected_method = m;
1380 }
1381 } else {
1382 // interface call
1383 KlassHandle h_holder(THREAD, holder);
1384
1385 int itbl_index = m->cached_itable_index();
1386 if (itbl_index == -1) {
1387 itbl_index = klassItable::compute_itable_index(m);
1388 m->set_cached_itable_index(itbl_index);
1389 // the above may have grabbed a lock, 'm' and anything non-handlized can't be used again
1390 }
1391 klassOop k = h_recv->klass();
1392 selected_method = instanceKlass::cast(k)->method_at_itable(h_holder(), itbl_index, CHECK);
1393 }
1394 }
1395
1396 methodHandle method(THREAD, selected_method);
1397
1398 // Create object to hold arguments for the JavaCall, and associate it with
1399 // the jni parser
1400 ResourceMark rm(THREAD);
1401 JavaCallArguments java_args(number_of_parameters);
1402 args->set_java_argument_object(&java_args);
1403
1404 // handle arguments
1405 assert(!method->is_static(), "method should not be static");
1406 args->push_receiver(h_recv); // Push jobject handle
1407
1408 // Fill out JavaCallArguments object
1409 args->iterate( Fingerprinter(method).fingerprint() );
1410 // Initialize result type
1411 result->set_type(args->get_ret_type());
1412
1413 // Invoke the method. Result is returned as oop.
1414 JavaCalls::call(result, method, &java_args, CHECK);
1415
1416 // Convert result
1417 if (result->get_type() == T_OBJECT || result->get_type() == T_ARRAY) {
1418 result->set_jobject(JNIHandles::make_local(env, (oop) result->get_jobject()));
1419 }
1420 }
1421
1422
1423 static instanceOop alloc_object(jclass clazz, TRAPS) {
1424 KlassHandle k(THREAD, java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(clazz)));
1425 Klass::cast(k())->check_valid_for_instantiation(false, CHECK_NULL);
1426 instanceKlass::cast(k())->initialize(CHECK_NULL);
1427 instanceOop ih = instanceKlass::cast(k())->allocate_instance(THREAD);
1428 return ih;
1429 }
1430
1431 #ifndef USDT2
1432 DT_RETURN_MARK_DECL(AllocObject, jobject);
1433 #else /* USDT2 */
1434 DT_RETURN_MARK_DECL(AllocObject, jobject
1435 , HOTSPOT_JNI_ALLOCOBJECT_RETURN(_ret_ref));
1436 #endif /* USDT2 */
1437
1438 JNI_ENTRY(jobject, jni_AllocObject(JNIEnv *env, jclass clazz))
1439 JNIWrapper("AllocObject");
1440
1441 #ifndef USDT2
1442 DTRACE_PROBE2(hotspot_jni, AllocObject__entry, env, clazz);
1443 #else /* USDT2 */
1444 HOTSPOT_JNI_ALLOCOBJECT_ENTRY(
1445 env, clazz);
1446 #endif /* USDT2 */
1447 jobject ret = NULL;
1448 DT_RETURN_MARK(AllocObject, jobject, (const jobject&)ret);
1449
1450 instanceOop i = alloc_object(clazz, CHECK_NULL);
1451 ret = JNIHandles::make_local(env, i);
1452 return ret;
1453 JNI_END
1454
1455 #ifndef USDT2
1456 DT_RETURN_MARK_DECL(NewObjectA, jobject);
1457 #else /* USDT2 */
1458 DT_RETURN_MARK_DECL(NewObjectA, jobject
1459 , HOTSPOT_JNI_NEWOBJECTA_RETURN(_ret_ref));
1460 #endif /* USDT2 */
1461
1462 JNI_ENTRY(jobject, jni_NewObjectA(JNIEnv *env, jclass clazz, jmethodID methodID, const jvalue *args))
1463 JNIWrapper("NewObjectA");
1464 #ifndef USDT2
1465 DTRACE_PROBE3(hotspot_jni, NewObjectA__entry, env, clazz, methodID);
1466 #else /* USDT2 */
1467 HOTSPOT_JNI_NEWOBJECTA_ENTRY(
1468 env, clazz, (uintptr_t) methodID);
1469 #endif /* USDT2 */
1470 jobject obj = NULL;
1471 DT_RETURN_MARK(NewObjectA, jobject, (const jobject)obj);
1472
1473 instanceOop i = alloc_object(clazz, CHECK_NULL);
1474 obj = JNIHandles::make_local(env, i);
1475 JavaValue jvalue(T_VOID);
1476 JNI_ArgumentPusherArray ap(methodID, args);
1477 jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK_NULL);
1478 return obj;
1479 JNI_END
1480
1481 #ifndef USDT2
1482 DT_RETURN_MARK_DECL(NewObjectV, jobject);
1483 #else /* USDT2 */
1484 DT_RETURN_MARK_DECL(NewObjectV, jobject
1485 , HOTSPOT_JNI_NEWOBJECTV_RETURN(_ret_ref));
1486 #endif /* USDT2 */
1487
1488 JNI_ENTRY(jobject, jni_NewObjectV(JNIEnv *env, jclass clazz, jmethodID methodID, va_list args))
1489 JNIWrapper("NewObjectV");
1490 #ifndef USDT2
1491 DTRACE_PROBE3(hotspot_jni, NewObjectV__entry, env, clazz, methodID);
1492 #else /* USDT2 */
1493 HOTSPOT_JNI_NEWOBJECTV_ENTRY(
1494 env, clazz, (uintptr_t) methodID);
1495 #endif /* USDT2 */
1496 jobject obj = NULL;
1497 DT_RETURN_MARK(NewObjectV, jobject, (const jobject&)obj);
1498
1499 instanceOop i = alloc_object(clazz, CHECK_NULL);
1500 obj = JNIHandles::make_local(env, i);
1501 JavaValue jvalue(T_VOID);
1502 JNI_ArgumentPusherVaArg ap(methodID, args);
1503 jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK_NULL);
1504 return obj;
1505 JNI_END
1506
1507 #ifndef USDT2
1508 DT_RETURN_MARK_DECL(NewObject, jobject);
1509 #else /* USDT2 */
1510 DT_RETURN_MARK_DECL(NewObject, jobject
1511 , HOTSPOT_JNI_NEWOBJECT_RETURN(_ret_ref));
1512 #endif /* USDT2 */
1513
1514 JNI_ENTRY(jobject, jni_NewObject(JNIEnv *env, jclass clazz, jmethodID methodID, ...))
1515 JNIWrapper("NewObject");
1516 #ifndef USDT2
1517 DTRACE_PROBE3(hotspot_jni, NewObject__entry, env, clazz, methodID);
1518 #else /* USDT2 */
1519 HOTSPOT_JNI_NEWOBJECT_ENTRY(
1520 env, clazz, (uintptr_t) methodID);
1521 #endif /* USDT2 */
1522 jobject obj = NULL;
1523 DT_RETURN_MARK(NewObject, jobject, (const jobject&)obj);
1524
1525 instanceOop i = alloc_object(clazz, CHECK_NULL);
1526 obj = JNIHandles::make_local(env, i);
1527 va_list args;
1528 va_start(args, methodID);
1529 JavaValue jvalue(T_VOID);
1530 JNI_ArgumentPusherVaArg ap(methodID, args);
1531 jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK_NULL);
1532 va_end(args);
1533 return obj;
1534 JNI_END
1535
1536
1537 JNI_ENTRY(jclass, jni_GetObjectClass(JNIEnv *env, jobject obj))
1538 JNIWrapper("GetObjectClass");
1539 #ifndef USDT2
1540 DTRACE_PROBE2(hotspot_jni, GetObjectClass__entry, env, obj);
1541 #else /* USDT2 */
1542 HOTSPOT_JNI_GETOBJECTCLASS_ENTRY(
1543 env, obj);
1544 #endif /* USDT2 */
1545 klassOop k = JNIHandles::resolve_non_null(obj)->klass();
1546 jclass ret =
1547 (jclass) JNIHandles::make_local(env, Klass::cast(k)->java_mirror());
1548 #ifndef USDT2
1549 DTRACE_PROBE1(hotspot_jni, GetObjectClass__return, ret);
1550 #else /* USDT2 */
1551 HOTSPOT_JNI_GETOBJECTCLASS_RETURN(
1552 ret);
1553 #endif /* USDT2 */
1554 return ret;
1555 JNI_END
1556
1557 JNI_QUICK_ENTRY(jboolean, jni_IsInstanceOf(JNIEnv *env, jobject obj, jclass clazz))
1558 JNIWrapper("IsInstanceOf");
1559 #ifndef USDT2
1560 DTRACE_PROBE3(hotspot_jni, IsInstanceOf__entry, env, obj, clazz);
1561 #else /* USDT2 */
1562 HOTSPOT_JNI_ISINSTANCEOF_ENTRY(
1563 env, obj, clazz);
1564 #endif /* USDT2 */
1565 jboolean ret = JNI_TRUE;
1566 if (obj != NULL) {
1567 ret = JNI_FALSE;
1568 klassOop k = java_lang_Class::as_klassOop(
1569 JNIHandles::resolve_non_null(clazz));
1570 if (k != NULL) {
1571 ret = JNIHandles::resolve_non_null(obj)->is_a(k) ? JNI_TRUE : JNI_FALSE;
1572 }
1573 }
1574 #ifndef USDT2
1575 DTRACE_PROBE1(hotspot_jni, IsInstanceOf__return, ret);
1576 #else /* USDT2 */
1577 HOTSPOT_JNI_ISINSTANCEOF_RETURN(
1578 ret);
1579 #endif /* USDT2 */
1580 return ret;
1581 JNI_END
1582
1583
1584 static jmethodID get_method_id(JNIEnv *env, jclass clazz, const char *name_str,
1585 const char *sig, bool is_static, TRAPS) {
1586 // %%%% This code should probably just call into a method in the LinkResolver
1587 //
1588 // The class should have been loaded (we have an instance of the class
1589 // passed in) so the method and signature should already be in the symbol
1590 // table. If they're not there, the method doesn't exist.
1591 const char *name_to_probe = (name_str == NULL)
1592 ? vmSymbols::object_initializer_name()->as_C_string()
1593 : name_str;
1594 TempNewSymbol name = SymbolTable::probe(name_to_probe, (int)strlen(name_to_probe));
1595 TempNewSymbol signature = SymbolTable::probe(sig, (int)strlen(sig));
1596
1597 if (name == NULL || signature == NULL) {
1598 THROW_MSG_0(vmSymbols::java_lang_NoSuchMethodError(), name_str);
1599 }
1600
1601 // Throw a NoSuchMethodError exception if we have an instance of a
1602 // primitive java.lang.Class
1603 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(clazz))) {
1604 THROW_MSG_0(vmSymbols::java_lang_NoSuchMethodError(), name_str);
1605 }
1606
1607 KlassHandle klass(THREAD,
1608 java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(clazz)));
1609
1610 // Make sure class is linked and initialized before handing id's out to
1611 // methodOops.
1612 Klass::cast(klass())->initialize(CHECK_NULL);
1613
1614 methodOop m;
1615 if (name == vmSymbols::object_initializer_name() ||
1616 name == vmSymbols::class_initializer_name()) {
1617 // Never search superclasses for constructors
1618 if (klass->oop_is_instance()) {
1619 m = instanceKlass::cast(klass())->find_method(name, signature);
1620 } else {
1621 m = NULL;
1622 }
1623 } else {
1624 m = klass->lookup_method(name, signature);
1625 // Look up interfaces
1626 if (m == NULL && klass->oop_is_instance()) {
1627 m = instanceKlass::cast(klass())->lookup_method_in_all_interfaces(name,
1628 signature);
1629 }
1630 }
1631 if (m == NULL || (m->is_static() != is_static)) {
1632 THROW_MSG_0(vmSymbols::java_lang_NoSuchMethodError(), name_str);
1633 }
1634 return m->jmethod_id();
1635 }
1636
1637
1638 JNI_ENTRY(jmethodID, jni_GetMethodID(JNIEnv *env, jclass clazz,
1639 const char *name, const char *sig))
1640 JNIWrapper("GetMethodID");
1641 #ifndef USDT2
1642 DTRACE_PROBE4(hotspot_jni, GetMethodID__entry, env, clazz, name, sig);
1643 #else /* USDT2 */
1644 HOTSPOT_JNI_GETMETHODID_ENTRY(
1645 env, clazz, (char *) name, (char *) sig);
1646 #endif /* USDT2 */
1647 jmethodID ret = get_method_id(env, clazz, name, sig, false, thread);
1648 #ifndef USDT2
1649 DTRACE_PROBE1(hotspot_jni, GetMethodID__return, ret);
1650 #else /* USDT2 */
1651 HOTSPOT_JNI_GETMETHODID_RETURN(
1652 (uintptr_t) ret);
1653 #endif /* USDT2 */
1654 return ret;
1655 JNI_END
1656
1657
1658 JNI_ENTRY(jmethodID, jni_GetStaticMethodID(JNIEnv *env, jclass clazz,
1659 const char *name, const char *sig))
1660 JNIWrapper("GetStaticMethodID");
1661 #ifndef USDT2
1662 DTRACE_PROBE4(hotspot_jni, GetStaticMethodID__entry, env, clazz, name, sig);
1663 #else /* USDT2 */
1664 HOTSPOT_JNI_GETSTATICMETHODID_ENTRY(
1665 env, (char *) clazz, (char *) name, (char *)sig);
1666 #endif /* USDT2 */
1667 jmethodID ret = get_method_id(env, clazz, name, sig, true, thread);
1668 #ifndef USDT2
1669 DTRACE_PROBE1(hotspot_jni, GetStaticMethodID__return, ret);
1670 #else /* USDT2 */
1671 HOTSPOT_JNI_GETSTATICMETHODID_RETURN(
1672 (uintptr_t) ret);
1673 #endif /* USDT2 */
1674 return ret;
1675 JNI_END
1676
1677
1678
1679 //
1680 // Calling Methods
1681 //
1682
1683 #ifndef USDT2
1684 #define DEFINE_CALLMETHOD(ResultType, Result, Tag) \
1685 \
1686 DT_RETURN_MARK_DECL_FOR(Result, Call##Result##Method, ResultType);\
1687 DT_RETURN_MARK_DECL_FOR(Result, Call##Result##MethodV, ResultType);\
1688 DT_RETURN_MARK_DECL_FOR(Result, Call##Result##MethodA, ResultType);\
1689 \
1690 JNI_ENTRY(ResultType, \
1691 jni_Call##Result##Method(JNIEnv *env, jobject obj, jmethodID methodID, ...)) \
1692 JNIWrapper("Call" XSTR(Result) "Method"); \
1693 \
1694 DTRACE_PROBE3(hotspot_jni, Call##Result##Method__entry, env, obj, methodID); \
1695 ResultType ret = 0;\
1696 DT_RETURN_MARK_FOR(Result, Call##Result##Method, ResultType, \
1697 (const ResultType&)ret);\
1698 \
1699 va_list args; \
1700 va_start(args, methodID); \
1701 JavaValue jvalue(Tag); \
1702 JNI_ArgumentPusherVaArg ap(methodID, args); \
1703 jni_invoke_nonstatic(env, &jvalue, obj, JNI_VIRTUAL, methodID, &ap, CHECK_0); \
1704 va_end(args); \
1705 ret = jvalue.get_##ResultType(); \
1706 return ret;\
1707 JNI_END \
1708 \
1709 \
1710 JNI_ENTRY(ResultType, \
1711 jni_Call##Result##MethodV(JNIEnv *env, jobject obj, jmethodID methodID, va_list args)) \
1712 JNIWrapper("Call" XSTR(Result) "MethodV"); \
1713 \
1714 DTRACE_PROBE3(hotspot_jni, Call##Result##MethodV__entry, env, obj, methodID); \
1715 ResultType ret = 0;\
1716 DT_RETURN_MARK_FOR(Result, Call##Result##MethodV, ResultType, \
1717 (const ResultType&)ret);\
1718 \
1719 JavaValue jvalue(Tag); \
1720 JNI_ArgumentPusherVaArg ap(methodID, args); \
1721 jni_invoke_nonstatic(env, &jvalue, obj, JNI_VIRTUAL, methodID, &ap, CHECK_0); \
1722 ret = jvalue.get_##ResultType(); \
1723 return ret;\
1724 JNI_END \
1725 \
1726 \
1727 JNI_ENTRY(ResultType, \
1728 jni_Call##Result##MethodA(JNIEnv *env, jobject obj, jmethodID methodID, const jvalue *args)) \
1729 JNIWrapper("Call" XSTR(Result) "MethodA"); \
1730 DTRACE_PROBE3(hotspot_jni, Call##Result##MethodA__entry, env, obj, methodID); \
1731 ResultType ret = 0;\
1732 DT_RETURN_MARK_FOR(Result, Call##Result##MethodA, ResultType, \
1733 (const ResultType&)ret);\
1734 \
1735 JavaValue jvalue(Tag); \
1736 JNI_ArgumentPusherArray ap(methodID, args); \
1737 jni_invoke_nonstatic(env, &jvalue, obj, JNI_VIRTUAL, methodID, &ap, CHECK_0); \
1738 ret = jvalue.get_##ResultType(); \
1739 return ret;\
1740 JNI_END
1741
1742 // the runtime type of subword integral basic types is integer
1743 DEFINE_CALLMETHOD(jboolean, Boolean, T_BOOLEAN)
1744 DEFINE_CALLMETHOD(jbyte, Byte, T_BYTE)
1745 DEFINE_CALLMETHOD(jchar, Char, T_CHAR)
1746 DEFINE_CALLMETHOD(jshort, Short, T_SHORT)
1747
1748 DEFINE_CALLMETHOD(jobject, Object, T_OBJECT)
1749 DEFINE_CALLMETHOD(jint, Int, T_INT)
1750 DEFINE_CALLMETHOD(jlong, Long, T_LONG)
1751 DEFINE_CALLMETHOD(jfloat, Float, T_FLOAT)
1752 DEFINE_CALLMETHOD(jdouble, Double, T_DOUBLE)
1753
1754 DT_VOID_RETURN_MARK_DECL(CallVoidMethod);
1755 DT_VOID_RETURN_MARK_DECL(CallVoidMethodV);
1756 DT_VOID_RETURN_MARK_DECL(CallVoidMethodA);
1757
1758 #else /* USDT2 */
1759
1760 #define DEFINE_CALLMETHOD(ResultType, Result, Tag \
1761 , EntryProbe, ReturnProbe) \
1762 \
1763 DT_RETURN_MARK_DECL_FOR(Result, Call##Result##Method, ResultType \
1764 , ReturnProbe); \
1765 \
1766 JNI_ENTRY(ResultType, \
1767 jni_Call##Result##Method(JNIEnv *env, jobject obj, jmethodID methodID, ...)) \
1768 JNIWrapper("Call" XSTR(Result) "Method"); \
1769 \
1770 EntryProbe; \
1771 ResultType ret = 0;\
1772 DT_RETURN_MARK_FOR(Result, Call##Result##Method, ResultType, \
1773 (const ResultType&)ret);\
1774 \
1775 va_list args; \
1776 va_start(args, methodID); \
1777 JavaValue jvalue(Tag); \
1778 JNI_ArgumentPusherVaArg ap(methodID, args); \
1779 jni_invoke_nonstatic(env, &jvalue, obj, JNI_VIRTUAL, methodID, &ap, CHECK_0); \
1780 va_end(args); \
1781 ret = jvalue.get_##ResultType(); \
1782 return ret;\
1783 JNI_END
1784
1785 // the runtime type of subword integral basic types is integer
1786 DEFINE_CALLMETHOD(jboolean, Boolean, T_BOOLEAN
1787 , HOTSPOT_JNI_CALLBOOLEANMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1788 HOTSPOT_JNI_CALLBOOLEANMETHOD_RETURN(_ret_ref))
1789 DEFINE_CALLMETHOD(jbyte, Byte, T_BYTE
1790 , HOTSPOT_JNI_CALLBYTEMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1791 HOTSPOT_JNI_CALLBYTEMETHOD_RETURN(_ret_ref))
1792 DEFINE_CALLMETHOD(jchar, Char, T_CHAR
1793 , HOTSPOT_JNI_CALLCHARMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1794 HOTSPOT_JNI_CALLCHARMETHOD_RETURN(_ret_ref))
1795 DEFINE_CALLMETHOD(jshort, Short, T_SHORT
1796 , HOTSPOT_JNI_CALLSHORTMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1797 HOTSPOT_JNI_CALLSHORTMETHOD_RETURN(_ret_ref))
1798
1799 DEFINE_CALLMETHOD(jobject, Object, T_OBJECT
1800 , HOTSPOT_JNI_CALLOBJECTMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1801 HOTSPOT_JNI_CALLOBJECTMETHOD_RETURN(_ret_ref))
1802 DEFINE_CALLMETHOD(jint, Int, T_INT,
1803 HOTSPOT_JNI_CALLINTMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1804 HOTSPOT_JNI_CALLINTMETHOD_RETURN(_ret_ref))
1805 DEFINE_CALLMETHOD(jlong, Long, T_LONG
1806 , HOTSPOT_JNI_CALLLONGMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1807 HOTSPOT_JNI_CALLLONGMETHOD_RETURN(_ret_ref))
1808 // Float and double probes don't return value because dtrace doesn't currently support it
1809 DEFINE_CALLMETHOD(jfloat, Float, T_FLOAT
1810 , HOTSPOT_JNI_CALLFLOATMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1811 HOTSPOT_JNI_CALLFLOATMETHOD_RETURN())
1812 DEFINE_CALLMETHOD(jdouble, Double, T_DOUBLE
1813 , HOTSPOT_JNI_CALLDOUBLEMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1814 HOTSPOT_JNI_CALLDOUBLEMETHOD_RETURN())
1815
1816 #define DEFINE_CALLMETHODV(ResultType, Result, Tag \
1817 , EntryProbe, ReturnProbe) \
1818 \
1819 DT_RETURN_MARK_DECL_FOR(Result, Call##Result##MethodV, ResultType \
1820 , ReturnProbe); \
1821 \
1822 JNI_ENTRY(ResultType, \
1823 jni_Call##Result##MethodV(JNIEnv *env, jobject obj, jmethodID methodID, va_list args)) \
1824 JNIWrapper("Call" XSTR(Result) "MethodV"); \
1825 \
1826 EntryProbe;\
1827 ResultType ret = 0;\
1828 DT_RETURN_MARK_FOR(Result, Call##Result##MethodV, ResultType, \
1829 (const ResultType&)ret);\
1830 \
1831 JavaValue jvalue(Tag); \
1832 JNI_ArgumentPusherVaArg ap(methodID, args); \
1833 jni_invoke_nonstatic(env, &jvalue, obj, JNI_VIRTUAL, methodID, &ap, CHECK_0); \
1834 ret = jvalue.get_##ResultType(); \
1835 return ret;\
1836 JNI_END
1837
1838 // the runtime type of subword integral basic types is integer
1839 DEFINE_CALLMETHODV(jboolean, Boolean, T_BOOLEAN
1840 , HOTSPOT_JNI_CALLBOOLEANMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1841 HOTSPOT_JNI_CALLBOOLEANMETHOD_RETURN(_ret_ref))
1842 DEFINE_CALLMETHODV(jbyte, Byte, T_BYTE
1843 , HOTSPOT_JNI_CALLBYTEMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1844 HOTSPOT_JNI_CALLBYTEMETHOD_RETURN(_ret_ref))
1845 DEFINE_CALLMETHODV(jchar, Char, T_CHAR
1846 , HOTSPOT_JNI_CALLCHARMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1847 HOTSPOT_JNI_CALLCHARMETHOD_RETURN(_ret_ref))
1848 DEFINE_CALLMETHODV(jshort, Short, T_SHORT
1849 , HOTSPOT_JNI_CALLSHORTMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1850 HOTSPOT_JNI_CALLSHORTMETHOD_RETURN(_ret_ref))
1851
1852 DEFINE_CALLMETHODV(jobject, Object, T_OBJECT
1853 , HOTSPOT_JNI_CALLOBJECTMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1854 HOTSPOT_JNI_CALLOBJECTMETHOD_RETURN(_ret_ref))
1855 DEFINE_CALLMETHODV(jint, Int, T_INT,
1856 HOTSPOT_JNI_CALLINTMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1857 HOTSPOT_JNI_CALLINTMETHOD_RETURN(_ret_ref))
1858 DEFINE_CALLMETHODV(jlong, Long, T_LONG
1859 , HOTSPOT_JNI_CALLLONGMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1860 HOTSPOT_JNI_CALLLONGMETHOD_RETURN(_ret_ref))
1861 // Float and double probes don't return value because dtrace doesn't currently support it
1862 DEFINE_CALLMETHODV(jfloat, Float, T_FLOAT
1863 , HOTSPOT_JNI_CALLFLOATMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1864 HOTSPOT_JNI_CALLFLOATMETHOD_RETURN())
1865 DEFINE_CALLMETHODV(jdouble, Double, T_DOUBLE
1866 , HOTSPOT_JNI_CALLDOUBLEMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1867 HOTSPOT_JNI_CALLDOUBLEMETHOD_RETURN())
1868
1869 #define DEFINE_CALLMETHODA(ResultType, Result, Tag \
1870 , EntryProbe, ReturnProbe) \
1871 \
1872 DT_RETURN_MARK_DECL_FOR(Result, Call##Result##MethodA, ResultType \
1873 , ReturnProbe); \
1874 \
1875 JNI_ENTRY(ResultType, \
1876 jni_Call##Result##MethodA(JNIEnv *env, jobject obj, jmethodID methodID, const jvalue *args)) \
1877 JNIWrapper("Call" XSTR(Result) "MethodA"); \
1878 EntryProbe; \
1879 ResultType ret = 0;\
1880 DT_RETURN_MARK_FOR(Result, Call##Result##MethodA, ResultType, \
1881 (const ResultType&)ret);\
1882 \
1883 JavaValue jvalue(Tag); \
1884 JNI_ArgumentPusherArray ap(methodID, args); \
1885 jni_invoke_nonstatic(env, &jvalue, obj, JNI_VIRTUAL, methodID, &ap, CHECK_0); \
1886 ret = jvalue.get_##ResultType(); \
1887 return ret;\
1888 JNI_END
1889
1890 // the runtime type of subword integral basic types is integer
1891 DEFINE_CALLMETHODA(jboolean, Boolean, T_BOOLEAN
1892 , HOTSPOT_JNI_CALLBOOLEANMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1893 HOTSPOT_JNI_CALLBOOLEANMETHOD_RETURN(_ret_ref))
1894 DEFINE_CALLMETHODA(jbyte, Byte, T_BYTE
1895 , HOTSPOT_JNI_CALLBYTEMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1896 HOTSPOT_JNI_CALLBYTEMETHOD_RETURN(_ret_ref))
1897 DEFINE_CALLMETHODA(jchar, Char, T_CHAR
1898 , HOTSPOT_JNI_CALLCHARMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1899 HOTSPOT_JNI_CALLCHARMETHOD_RETURN(_ret_ref))
1900 DEFINE_CALLMETHODA(jshort, Short, T_SHORT
1901 , HOTSPOT_JNI_CALLSHORTMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1902 HOTSPOT_JNI_CALLSHORTMETHOD_RETURN(_ret_ref))
1903
1904 DEFINE_CALLMETHODA(jobject, Object, T_OBJECT
1905 , HOTSPOT_JNI_CALLOBJECTMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1906 HOTSPOT_JNI_CALLOBJECTMETHOD_RETURN(_ret_ref))
1907 DEFINE_CALLMETHODA(jint, Int, T_INT,
1908 HOTSPOT_JNI_CALLINTMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1909 HOTSPOT_JNI_CALLINTMETHOD_RETURN(_ret_ref))
1910 DEFINE_CALLMETHODA(jlong, Long, T_LONG
1911 , HOTSPOT_JNI_CALLLONGMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1912 HOTSPOT_JNI_CALLLONGMETHOD_RETURN(_ret_ref))
1913 // Float and double probes don't return value because dtrace doesn't currently support it
1914 DEFINE_CALLMETHODA(jfloat, Float, T_FLOAT
1915 , HOTSPOT_JNI_CALLFLOATMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1916 HOTSPOT_JNI_CALLFLOATMETHOD_RETURN())
1917 DEFINE_CALLMETHODA(jdouble, Double, T_DOUBLE
1918 , HOTSPOT_JNI_CALLDOUBLEMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1919 HOTSPOT_JNI_CALLDOUBLEMETHOD_RETURN())
1920
1921 DT_VOID_RETURN_MARK_DECL(CallVoidMethod, HOTSPOT_JNI_CALLVOIDMETHOD_RETURN());
1922 DT_VOID_RETURN_MARK_DECL(CallVoidMethodV, HOTSPOT_JNI_CALLVOIDMETHODV_RETURN());
1923 DT_VOID_RETURN_MARK_DECL(CallVoidMethodA, HOTSPOT_JNI_CALLVOIDMETHODA_RETURN());
1924
1925 #endif /* USDT2 */
1926
1927 JNI_ENTRY(void, jni_CallVoidMethod(JNIEnv *env, jobject obj, jmethodID methodID, ...))
1928 JNIWrapper("CallVoidMethod");
1929 #ifndef USDT2
1930 DTRACE_PROBE3(hotspot_jni, CallVoidMethod__entry, env, obj, methodID);
1931 #else /* USDT2 */
1932 HOTSPOT_JNI_CALLVOIDMETHOD_ENTRY(
1933 env, obj, (uintptr_t) methodID);
1934 #endif /* USDT2 */
1935 DT_VOID_RETURN_MARK(CallVoidMethod);
1936
1937 va_list args;
1938 va_start(args, methodID);
1939 JavaValue jvalue(T_VOID);
1940 JNI_ArgumentPusherVaArg ap(methodID, args);
1941 jni_invoke_nonstatic(env, &jvalue, obj, JNI_VIRTUAL, methodID, &ap, CHECK);
1942 va_end(args);
1943 JNI_END
1944
1945
1946 JNI_ENTRY(void, jni_CallVoidMethodV(JNIEnv *env, jobject obj, jmethodID methodID, va_list args))
1947 JNIWrapper("CallVoidMethodV");
1948 #ifndef USDT2
1949 DTRACE_PROBE3(hotspot_jni, CallVoidMethodV__entry, env, obj, methodID);
1950 #else /* USDT2 */
1951 HOTSPOT_JNI_CALLVOIDMETHODV_ENTRY(
1952 env, obj, (uintptr_t) methodID);
1953 #endif /* USDT2 */
1954 DT_VOID_RETURN_MARK(CallVoidMethodV);
1955
1956 JavaValue jvalue(T_VOID);
1957 JNI_ArgumentPusherVaArg ap(methodID, args);
1958 jni_invoke_nonstatic(env, &jvalue, obj, JNI_VIRTUAL, methodID, &ap, CHECK);
1959 JNI_END
1960
1961
1962 JNI_ENTRY(void, jni_CallVoidMethodA(JNIEnv *env, jobject obj, jmethodID methodID, const jvalue *args))
1963 JNIWrapper("CallVoidMethodA");
1964 #ifndef USDT2
1965 DTRACE_PROBE3(hotspot_jni, CallVoidMethodA__entry, env, obj, methodID);
1966 #else /* USDT2 */
1967 HOTSPOT_JNI_CALLVOIDMETHODA_ENTRY(
1968 env, obj, (uintptr_t) methodID);
1969 #endif /* USDT2 */
1970 DT_VOID_RETURN_MARK(CallVoidMethodA);
1971
1972 JavaValue jvalue(T_VOID);
1973 JNI_ArgumentPusherArray ap(methodID, args);
1974 jni_invoke_nonstatic(env, &jvalue, obj, JNI_VIRTUAL, methodID, &ap, CHECK);
1975 JNI_END
1976
1977
1978 #ifndef USDT2
1979 #define DEFINE_CALLNONVIRTUALMETHOD(ResultType, Result, Tag) \
1980 \
1981 DT_RETURN_MARK_DECL_FOR(Result, CallNonvirtual##Result##Method, ResultType);\
1982 DT_RETURN_MARK_DECL_FOR(Result, CallNonvirtual##Result##MethodV, ResultType);\
1983 DT_RETURN_MARK_DECL_FOR(Result, CallNonvirtual##Result##MethodA, ResultType);\
1984 \
1985 JNI_ENTRY(ResultType, \
1986 jni_CallNonvirtual##Result##Method(JNIEnv *env, jobject obj, jclass cls, jmethodID methodID, ...)) \
1987 JNIWrapper("CallNonvitual" XSTR(Result) "Method"); \
1988 \
1989 DTRACE_PROBE4(hotspot_jni, CallNonvirtual##Result##Method__entry, env, obj, cls, methodID);\
1990 ResultType ret;\
1991 DT_RETURN_MARK_FOR(Result, CallNonvirtual##Result##Method, ResultType, \
1992 (const ResultType&)ret);\
1993 \
1994 va_list args; \
1995 va_start(args, methodID); \
1996 JavaValue jvalue(Tag); \
1997 JNI_ArgumentPusherVaArg ap(methodID, args); \
1998 jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK_0); \
1999 va_end(args); \
2000 ret = jvalue.get_##ResultType(); \
2001 return ret;\
2002 JNI_END \
2003 \
2004 JNI_ENTRY(ResultType, \
2005 jni_CallNonvirtual##Result##MethodV(JNIEnv *env, jobject obj, jclass cls, jmethodID methodID, va_list args)) \
2006 JNIWrapper("CallNonvitual" XSTR(Result) "#MethodV"); \
2007 DTRACE_PROBE4(hotspot_jni, CallNonvirtual##Result##MethodV__entry, env, obj, cls, methodID);\
2008 ResultType ret;\
2009 DT_RETURN_MARK_FOR(Result, CallNonvirtual##Result##MethodV, ResultType, \
2010 (const ResultType&)ret);\
2011 \
2012 JavaValue jvalue(Tag); \
2013 JNI_ArgumentPusherVaArg ap(methodID, args); \
2014 jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK_0); \
2015 ret = jvalue.get_##ResultType(); \
2016 return ret;\
2017 JNI_END \
2018 \
2019 JNI_ENTRY(ResultType, \
2020 jni_CallNonvirtual##Result##MethodA(JNIEnv *env, jobject obj, jclass cls, jmethodID methodID, const jvalue *args)) \
2021 JNIWrapper("CallNonvitual" XSTR(Result) "MethodA"); \
2022 DTRACE_PROBE4(hotspot_jni, CallNonvirtual##Result##MethodA__entry, env, obj, cls, methodID);\
2023 ResultType ret;\
2024 DT_RETURN_MARK_FOR(Result, CallNonvirtual##Result##MethodA, ResultType, \
2025 (const ResultType&)ret);\
2026 \
2027 JavaValue jvalue(Tag); \
2028 JNI_ArgumentPusherArray ap(methodID, args); \
2029 jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK_0); \
2030 ret = jvalue.get_##ResultType(); \
2031 return ret;\
2032 JNI_END
2033
2034 // the runtime type of subword integral basic types is integer
2035 DEFINE_CALLNONVIRTUALMETHOD(jboolean, Boolean, T_BOOLEAN)
2036 DEFINE_CALLNONVIRTUALMETHOD(jbyte, Byte, T_BYTE)
2037 DEFINE_CALLNONVIRTUALMETHOD(jchar, Char, T_CHAR)
2038 DEFINE_CALLNONVIRTUALMETHOD(jshort, Short, T_SHORT)
2039
2040 DEFINE_CALLNONVIRTUALMETHOD(jobject, Object, T_OBJECT)
2041 DEFINE_CALLNONVIRTUALMETHOD(jint, Int, T_INT)
2042 DEFINE_CALLNONVIRTUALMETHOD(jlong, Long, T_LONG)
2043 DEFINE_CALLNONVIRTUALMETHOD(jfloat, Float, T_FLOAT)
2044 DEFINE_CALLNONVIRTUALMETHOD(jdouble, Double, T_DOUBLE)
2045
2046
2047 DT_VOID_RETURN_MARK_DECL(CallNonvirtualVoidMethod);
2048 DT_VOID_RETURN_MARK_DECL(CallNonvirtualVoidMethodV);
2049 DT_VOID_RETURN_MARK_DECL(CallNonvirtualVoidMethodA);
2050
2051 #else /* USDT2 */
2052
2053 #define DEFINE_CALLNONVIRTUALMETHOD(ResultType, Result, Tag \
2054 , EntryProbe, ReturnProbe) \
2055 \
2056 DT_RETURN_MARK_DECL_FOR(Result, CallNonvirtual##Result##Method, ResultType \
2057 , ReturnProbe);\
2058 \
2059 JNI_ENTRY(ResultType, \
2060 jni_CallNonvirtual##Result##Method(JNIEnv *env, jobject obj, jclass cls, jmethodID methodID, ...)) \
2061 JNIWrapper("CallNonvitual" XSTR(Result) "Method"); \
2062 \
2063 EntryProbe;\
2064 ResultType ret;\
2065 DT_RETURN_MARK_FOR(Result, CallNonvirtual##Result##Method, ResultType, \
2066 (const ResultType&)ret);\
2067 \
2068 va_list args; \
2069 va_start(args, methodID); \
2070 JavaValue jvalue(Tag); \
2071 JNI_ArgumentPusherVaArg ap(methodID, args); \
2072 jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK_0); \
2073 va_end(args); \
2074 ret = jvalue.get_##ResultType(); \
2075 return ret;\
2076 JNI_END
2077
2078 // the runtime type of subword integral basic types is integer
2079 DEFINE_CALLNONVIRTUALMETHOD(jboolean, Boolean, T_BOOLEAN
2080 , HOTSPOT_JNI_CALLNONVIRTUALBOOLEANMETHOD_ENTRY(env, obj, cls, (uintptr_t)methodID),
2081 HOTSPOT_JNI_CALLNONVIRTUALBOOLEANMETHOD_RETURN(_ret_ref))
2082 DEFINE_CALLNONVIRTUALMETHOD(jbyte, Byte, T_BYTE
2083 , HOTSPOT_JNI_CALLNONVIRTUALBYTEMETHOD_ENTRY(env, obj, cls, (uintptr_t)methodID),
2084 HOTSPOT_JNI_CALLNONVIRTUALBYTEMETHOD_RETURN(_ret_ref))
2085 DEFINE_CALLNONVIRTUALMETHOD(jchar, Char, T_CHAR
2086 , HOTSPOT_JNI_CALLNONVIRTUALCHARMETHOD_ENTRY(env, obj, cls, (uintptr_t)methodID),
2087 HOTSPOT_JNI_CALLNONVIRTUALCHARMETHOD_RETURN(_ret_ref))
2088 DEFINE_CALLNONVIRTUALMETHOD(jshort, Short, T_SHORT
2089 , HOTSPOT_JNI_CALLNONVIRTUALSHORTMETHOD_ENTRY(env, obj, cls, (uintptr_t)methodID),
2090 HOTSPOT_JNI_CALLNONVIRTUALSHORTMETHOD_RETURN(_ret_ref))
2091
2092 DEFINE_CALLNONVIRTUALMETHOD(jobject, Object, T_OBJECT
2093 , HOTSPOT_JNI_CALLNONVIRTUALOBJECTMETHOD_ENTRY(env, obj, cls, (uintptr_t)methodID),
2094 HOTSPOT_JNI_CALLNONVIRTUALOBJECTMETHOD_RETURN(_ret_ref))
2095 DEFINE_CALLNONVIRTUALMETHOD(jint, Int, T_INT
2096 , HOTSPOT_JNI_CALLNONVIRTUALINTMETHOD_ENTRY(env, obj, cls, (uintptr_t)methodID),
2097 HOTSPOT_JNI_CALLNONVIRTUALINTMETHOD_RETURN(_ret_ref))
2098 DEFINE_CALLNONVIRTUALMETHOD(jlong, Long, T_LONG
2099 , HOTSPOT_JNI_CALLNONVIRTUALLONGMETHOD_ENTRY(env, obj, cls, (uintptr_t)methodID),
2100 // Float and double probes don't return value because dtrace doesn't currently support it
2101 HOTSPOT_JNI_CALLNONVIRTUALLONGMETHOD_RETURN(_ret_ref))
2102 DEFINE_CALLNONVIRTUALMETHOD(jfloat, Float, T_FLOAT
2103 , HOTSPOT_JNI_CALLNONVIRTUALFLOATMETHOD_ENTRY(env, obj, cls, (uintptr_t)methodID),
2104 HOTSPOT_JNI_CALLNONVIRTUALFLOATMETHOD_RETURN())
2105 DEFINE_CALLNONVIRTUALMETHOD(jdouble, Double, T_DOUBLE
2106 , HOTSPOT_JNI_CALLNONVIRTUALDOUBLEMETHOD_ENTRY(env, obj, cls, (uintptr_t)methodID),
2107 HOTSPOT_JNI_CALLNONVIRTUALDOUBLEMETHOD_RETURN())
2108
2109 #define DEFINE_CALLNONVIRTUALMETHODV(ResultType, Result, Tag \
2110 , EntryProbe, ReturnProbe) \
2111 \
2112 DT_RETURN_MARK_DECL_FOR(Result, CallNonvirtual##Result##MethodV, ResultType \
2113 , ReturnProbe);\
2114 \
2115 JNI_ENTRY(ResultType, \
2116 jni_CallNonvirtual##Result##MethodV(JNIEnv *env, jobject obj, jclass cls, jmethodID methodID, va_list args)) \
2117 JNIWrapper("CallNonvitual" XSTR(Result) "MethodV"); \
2118 \
2119 EntryProbe;\
2120 ResultType ret;\
2121 DT_RETURN_MARK_FOR(Result, CallNonvirtual##Result##MethodV, ResultType, \
2122 (const ResultType&)ret);\
2123 \
2124 JavaValue jvalue(Tag); \
2125 JNI_ArgumentPusherVaArg ap(methodID, args); \
2126 jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK_0); \
2127 ret = jvalue.get_##ResultType(); \
2128 return ret;\
2129 JNI_END
2130
2131 // the runtime type of subword integral basic types is integer
2132 DEFINE_CALLNONVIRTUALMETHODV(jboolean, Boolean, T_BOOLEAN
2133 , HOTSPOT_JNI_CALLNONVIRTUALBOOLEANMETHODV_ENTRY(env, obj, cls, (uintptr_t)methodID),
2134 HOTSPOT_JNI_CALLNONVIRTUALBOOLEANMETHODV_RETURN(_ret_ref))
2135 DEFINE_CALLNONVIRTUALMETHODV(jbyte, Byte, T_BYTE
2136 , HOTSPOT_JNI_CALLNONVIRTUALBYTEMETHODV_ENTRY(env, obj, cls, (uintptr_t)methodID),
2137 HOTSPOT_JNI_CALLNONVIRTUALBYTEMETHODV_RETURN(_ret_ref))
2138 DEFINE_CALLNONVIRTUALMETHODV(jchar, Char, T_CHAR
2139 , HOTSPOT_JNI_CALLNONVIRTUALCHARMETHODV_ENTRY(env, obj, cls, (uintptr_t)methodID),
2140 HOTSPOT_JNI_CALLNONVIRTUALCHARMETHODV_RETURN(_ret_ref))
2141 DEFINE_CALLNONVIRTUALMETHODV(jshort, Short, T_SHORT
2142 , HOTSPOT_JNI_CALLNONVIRTUALSHORTMETHODV_ENTRY(env, obj, cls, (uintptr_t)methodID),
2143 HOTSPOT_JNI_CALLNONVIRTUALSHORTMETHODV_RETURN(_ret_ref))
2144
2145 DEFINE_CALLNONVIRTUALMETHODV(jobject, Object, T_OBJECT
2146 , HOTSPOT_JNI_CALLNONVIRTUALOBJECTMETHODV_ENTRY(env, obj, cls, (uintptr_t)methodID),
2147 HOTSPOT_JNI_CALLNONVIRTUALOBJECTMETHODV_RETURN(_ret_ref))
2148 DEFINE_CALLNONVIRTUALMETHODV(jint, Int, T_INT
2149 , HOTSPOT_JNI_CALLNONVIRTUALINTMETHODV_ENTRY(env, obj, cls, (uintptr_t)methodID),
2150 HOTSPOT_JNI_CALLNONVIRTUALINTMETHODV_RETURN(_ret_ref))
2151 DEFINE_CALLNONVIRTUALMETHODV(jlong, Long, T_LONG
2152 , HOTSPOT_JNI_CALLNONVIRTUALLONGMETHODV_ENTRY(env, obj, cls, (uintptr_t)methodID),
2153 // Float and double probes don't return value because dtrace doesn't currently support it
2154 HOTSPOT_JNI_CALLNONVIRTUALLONGMETHODV_RETURN(_ret_ref))
2155 DEFINE_CALLNONVIRTUALMETHODV(jfloat, Float, T_FLOAT
2156 , HOTSPOT_JNI_CALLNONVIRTUALFLOATMETHODV_ENTRY(env, obj, cls, (uintptr_t)methodID),
2157 HOTSPOT_JNI_CALLNONVIRTUALFLOATMETHODV_RETURN())
2158 DEFINE_CALLNONVIRTUALMETHODV(jdouble, Double, T_DOUBLE
2159 , HOTSPOT_JNI_CALLNONVIRTUALDOUBLEMETHODV_ENTRY(env, obj, cls, (uintptr_t)methodID),
2160 HOTSPOT_JNI_CALLNONVIRTUALDOUBLEMETHODV_RETURN())
2161
2162 #define DEFINE_CALLNONVIRTUALMETHODA(ResultType, Result, Tag \
2163 , EntryProbe, ReturnProbe) \
2164 \
2165 DT_RETURN_MARK_DECL_FOR(Result, CallNonvirtual##Result##MethodA, ResultType \
2166 , ReturnProbe);\
2167 \
2168 JNI_ENTRY(ResultType, \
2169 jni_CallNonvirtual##Result##MethodA(JNIEnv *env, jobject obj, jclass cls, jmethodID methodID, const jvalue *args)) \
2170 JNIWrapper("CallNonvitual" XSTR(Result) "MethodA"); \
2171 \
2172 EntryProbe;\
2173 ResultType ret;\
2174 DT_RETURN_MARK_FOR(Result, CallNonvirtual##Result##MethodA, ResultType, \
2175 (const ResultType&)ret);\
2176 \
2177 JavaValue jvalue(Tag); \
2178 JNI_ArgumentPusherArray ap(methodID, args); \
2179 jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK_0); \
2180 ret = jvalue.get_##ResultType(); \
2181 return ret;\
2182 JNI_END
2183
2184 // the runtime type of subword integral basic types is integer
2185 DEFINE_CALLNONVIRTUALMETHODA(jboolean, Boolean, T_BOOLEAN
2186 , HOTSPOT_JNI_CALLNONVIRTUALBOOLEANMETHODA_ENTRY(env, obj, cls, (uintptr_t)methodID),
2187 HOTSPOT_JNI_CALLNONVIRTUALBOOLEANMETHODA_RETURN(_ret_ref))
2188 DEFINE_CALLNONVIRTUALMETHODA(jbyte, Byte, T_BYTE
2189 , HOTSPOT_JNI_CALLNONVIRTUALBYTEMETHODA_ENTRY(env, obj, cls, (uintptr_t)methodID),
2190 HOTSPOT_JNI_CALLNONVIRTUALBYTEMETHODA_RETURN(_ret_ref))
2191 DEFINE_CALLNONVIRTUALMETHODA(jchar, Char, T_CHAR
2192 , HOTSPOT_JNI_CALLNONVIRTUALCHARMETHODA_ENTRY(env, obj, cls, (uintptr_t)methodID),
2193 HOTSPOT_JNI_CALLNONVIRTUALCHARMETHODA_RETURN(_ret_ref))
2194 DEFINE_CALLNONVIRTUALMETHODA(jshort, Short, T_SHORT
2195 , HOTSPOT_JNI_CALLNONVIRTUALSHORTMETHODA_ENTRY(env, obj, cls, (uintptr_t)methodID),
2196 HOTSPOT_JNI_CALLNONVIRTUALSHORTMETHODA_RETURN(_ret_ref))
2197
2198 DEFINE_CALLNONVIRTUALMETHODA(jobject, Object, T_OBJECT
2199 , HOTSPOT_JNI_CALLNONVIRTUALOBJECTMETHODA_ENTRY(env, obj, cls, (uintptr_t)methodID),
2200 HOTSPOT_JNI_CALLNONVIRTUALOBJECTMETHODA_RETURN(_ret_ref))
2201 DEFINE_CALLNONVIRTUALMETHODA(jint, Int, T_INT
2202 , HOTSPOT_JNI_CALLNONVIRTUALINTMETHODA_ENTRY(env, obj, cls, (uintptr_t)methodID),
2203 HOTSPOT_JNI_CALLNONVIRTUALINTMETHODA_RETURN(_ret_ref))
2204 DEFINE_CALLNONVIRTUALMETHODA(jlong, Long, T_LONG
2205 , HOTSPOT_JNI_CALLNONVIRTUALLONGMETHODA_ENTRY(env, obj, cls, (uintptr_t)methodID),
2206 // Float and double probes don't return value because dtrace doesn't currently support it
2207 HOTSPOT_JNI_CALLNONVIRTUALLONGMETHODA_RETURN(_ret_ref))
2208 DEFINE_CALLNONVIRTUALMETHODA(jfloat, Float, T_FLOAT
2209 , HOTSPOT_JNI_CALLNONVIRTUALFLOATMETHODA_ENTRY(env, obj, cls, (uintptr_t)methodID),
2210 HOTSPOT_JNI_CALLNONVIRTUALFLOATMETHODA_RETURN())
2211 DEFINE_CALLNONVIRTUALMETHODA(jdouble, Double, T_DOUBLE
2212 , HOTSPOT_JNI_CALLNONVIRTUALDOUBLEMETHODA_ENTRY(env, obj, cls, (uintptr_t)methodID),
2213 HOTSPOT_JNI_CALLNONVIRTUALDOUBLEMETHODA_RETURN())
2214
2215 DT_VOID_RETURN_MARK_DECL(CallNonvirtualVoidMethod
2216 , HOTSPOT_JNI_CALLNONVIRTUALVOIDMETHOD_RETURN());
2217 DT_VOID_RETURN_MARK_DECL(CallNonvirtualVoidMethodV
2218 , HOTSPOT_JNI_CALLNONVIRTUALVOIDMETHODV_RETURN());
2219 DT_VOID_RETURN_MARK_DECL(CallNonvirtualVoidMethodA
2220 , HOTSPOT_JNI_CALLNONVIRTUALVOIDMETHODA_RETURN());
2221 #endif /* USDT2 */
2222
2223 JNI_ENTRY(void, jni_CallNonvirtualVoidMethod(JNIEnv *env, jobject obj, jclass cls, jmethodID methodID, ...))
2224 JNIWrapper("CallNonvirtualVoidMethod");
2225
2226 #ifndef USDT2
2227 DTRACE_PROBE4(hotspot_jni, CallNonvirtualVoidMethod__entry,
2228 env, obj, cls, methodID);
2229 #else /* USDT2 */
2230 HOTSPOT_JNI_CALLNONVIRTUALVOIDMETHOD_ENTRY(
2231 env, obj, cls, (uintptr_t) methodID);
2232 #endif /* USDT2 */
2233 DT_VOID_RETURN_MARK(CallNonvirtualVoidMethod);
2234
2235 va_list args;
2236 va_start(args, methodID);
2237 JavaValue jvalue(T_VOID);
2238 JNI_ArgumentPusherVaArg ap(methodID, args);
2239 jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK);
2240 va_end(args);
2241 JNI_END
2242
2243
2244 JNI_ENTRY(void, jni_CallNonvirtualVoidMethodV(JNIEnv *env, jobject obj, jclass cls, jmethodID methodID, va_list args))
2245 JNIWrapper("CallNonvirtualVoidMethodV");
2246
2247 #ifndef USDT2
2248 DTRACE_PROBE4(hotspot_jni, CallNonvirtualVoidMethodV__entry,
2249 env, obj, cls, methodID);
2250 #else /* USDT2 */
2251 HOTSPOT_JNI_CALLNONVIRTUALVOIDMETHODV_ENTRY(
2252 env, obj, cls, (uintptr_t) methodID);
2253 #endif /* USDT2 */
2254 DT_VOID_RETURN_MARK(CallNonvirtualVoidMethodV);
2255
2256 JavaValue jvalue(T_VOID);
2257 JNI_ArgumentPusherVaArg ap(methodID, args);
2258 jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK);
2259 JNI_END
2260
2261
2262 JNI_ENTRY(void, jni_CallNonvirtualVoidMethodA(JNIEnv *env, jobject obj, jclass cls, jmethodID methodID, const jvalue *args))
2263 JNIWrapper("CallNonvirtualVoidMethodA");
2264 #ifndef USDT2
2265 DTRACE_PROBE4(hotspot_jni, CallNonvirtualVoidMethodA__entry,
2266 env, obj, cls, methodID);
2267 #else /* USDT2 */
2268 HOTSPOT_JNI_CALLNONVIRTUALVOIDMETHODA_ENTRY(
2269 env, obj, cls, (uintptr_t) methodID);
2270 #endif /* USDT2 */
2271 DT_VOID_RETURN_MARK(CallNonvirtualVoidMethodA);
2272 JavaValue jvalue(T_VOID);
2273 JNI_ArgumentPusherArray ap(methodID, args);
2274 jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK);
2275 JNI_END
2276
2277
2278 #ifndef USDT2
2279 #define DEFINE_CALLSTATICMETHOD(ResultType, Result, Tag) \
2280 \
2281 DT_RETURN_MARK_DECL_FOR(Result, CallStatic##Result##Method, ResultType);\
2282 DT_RETURN_MARK_DECL_FOR(Result, CallStatic##Result##MethodV, ResultType);\
2283 DT_RETURN_MARK_DECL_FOR(Result, CallStatic##Result##MethodA, ResultType);\
2284 \
2285 JNI_ENTRY(ResultType, \
2286 jni_CallStatic##Result##Method(JNIEnv *env, jclass cls, jmethodID methodID, ...)) \
2287 JNIWrapper("CallStatic" XSTR(Result) "Method"); \
2288 \
2289 DTRACE_PROBE3(hotspot_jni, CallStatic##Result##Method__entry, env, cls, methodID);\
2290 ResultType ret = 0;\
2291 DT_RETURN_MARK_FOR(Result, CallStatic##Result##Method, ResultType, \
2292 (const ResultType&)ret);\
2293 \
2294 va_list args; \
2295 va_start(args, methodID); \
2296 JavaValue jvalue(Tag); \
2297 JNI_ArgumentPusherVaArg ap(methodID, args); \
2298 jni_invoke_static(env, &jvalue, NULL, JNI_STATIC, methodID, &ap, CHECK_0); \
2299 va_end(args); \
2300 ret = jvalue.get_##ResultType(); \
2301 return ret;\
2302 JNI_END \
2303 \
2304 JNI_ENTRY(ResultType, \
2305 jni_CallStatic##Result##MethodV(JNIEnv *env, jclass cls, jmethodID methodID, va_list args)) \
2306 JNIWrapper("CallStatic" XSTR(Result) "MethodV"); \
2307 DTRACE_PROBE3(hotspot_jni, CallStatic##Result##MethodV__entry, env, cls, methodID);\
2308 ResultType ret = 0;\
2309 DT_RETURN_MARK_FOR(Result, CallStatic##Result##MethodV, ResultType, \
2310 (const ResultType&)ret);\
2311 \
2312 JavaValue jvalue(Tag); \
2313 JNI_ArgumentPusherVaArg ap(methodID, args); \
2314 jni_invoke_static(env, &jvalue, NULL, JNI_STATIC, methodID, &ap, CHECK_0); \
2315 ret = jvalue.get_##ResultType(); \
2316 return ret;\
2317 JNI_END \
2318 \
2319 JNI_ENTRY(ResultType, \
2320 jni_CallStatic##Result##MethodA(JNIEnv *env, jclass cls, jmethodID methodID, const jvalue *args)) \
2321 JNIWrapper("CallStatic" XSTR(Result) "MethodA"); \
2322 DTRACE_PROBE3(hotspot_jni, CallStatic##Result##MethodA__entry, env, cls, methodID);\
2323 ResultType ret = 0;\
2324 DT_RETURN_MARK_FOR(Result, CallStatic##Result##MethodA, ResultType, \
2325 (const ResultType&)ret);\
2326 \
2327 JavaValue jvalue(Tag); \
2328 JNI_ArgumentPusherArray ap(methodID, args); \
2329 jni_invoke_static(env, &jvalue, NULL, JNI_STATIC, methodID, &ap, CHECK_0); \
2330 ret = jvalue.get_##ResultType(); \
2331 return ret;\
2332 JNI_END
2333
2334 // the runtime type of subword integral basic types is integer
2335 DEFINE_CALLSTATICMETHOD(jboolean, Boolean, T_BOOLEAN)
2336 DEFINE_CALLSTATICMETHOD(jbyte, Byte, T_BYTE)
2337 DEFINE_CALLSTATICMETHOD(jchar, Char, T_CHAR)
2338 DEFINE_CALLSTATICMETHOD(jshort, Short, T_SHORT)
2339
2340 DEFINE_CALLSTATICMETHOD(jobject, Object, T_OBJECT)
2341 DEFINE_CALLSTATICMETHOD(jint, Int, T_INT)
2342 DEFINE_CALLSTATICMETHOD(jlong, Long, T_LONG)
2343 DEFINE_CALLSTATICMETHOD(jfloat, Float, T_FLOAT)
2344 DEFINE_CALLSTATICMETHOD(jdouble, Double, T_DOUBLE)
2345
2346
2347 DT_VOID_RETURN_MARK_DECL(CallStaticVoidMethod);
2348 DT_VOID_RETURN_MARK_DECL(CallStaticVoidMethodV);
2349 DT_VOID_RETURN_MARK_DECL(CallStaticVoidMethodA);
2350
2351 #else /* USDT2 */
2352
2353 #define DEFINE_CALLSTATICMETHOD(ResultType, Result, Tag \
2354 , EntryProbe, ResultProbe) \
2355 \
2356 DT_RETURN_MARK_DECL_FOR(Result, CallStatic##Result##Method, ResultType \
2357 , ResultProbe); \
2358 \
2359 JNI_ENTRY(ResultType, \
2360 jni_CallStatic##Result##Method(JNIEnv *env, jclass cls, jmethodID methodID, ...)) \
2361 JNIWrapper("CallStatic" XSTR(Result) "Method"); \
2362 \
2363 EntryProbe; \
2364 ResultType ret = 0;\
2365 DT_RETURN_MARK_FOR(Result, CallStatic##Result##Method, ResultType, \
2366 (const ResultType&)ret);\
2367 \
2368 va_list args; \
2369 va_start(args, methodID); \
2370 JavaValue jvalue(Tag); \
2371 JNI_ArgumentPusherVaArg ap(methodID, args); \
2372 jni_invoke_static(env, &jvalue, NULL, JNI_STATIC, methodID, &ap, CHECK_0); \
2373 va_end(args); \
2374 ret = jvalue.get_##ResultType(); \
2375 return ret;\
2376 JNI_END
2377
2378 // the runtime type of subword integral basic types is integer
2379 DEFINE_CALLSTATICMETHOD(jboolean, Boolean, T_BOOLEAN
2380 , HOTSPOT_JNI_CALLSTATICBOOLEANMETHOD_ENTRY(env, cls, (uintptr_t)methodID),
2381 HOTSPOT_JNI_CALLSTATICBOOLEANMETHOD_RETURN(_ret_ref));
2382 DEFINE_CALLSTATICMETHOD(jbyte, Byte, T_BYTE
2383 , HOTSPOT_JNI_CALLSTATICBYTEMETHOD_ENTRY(env, cls, (uintptr_t)methodID),
2384 HOTSPOT_JNI_CALLSTATICBYTEMETHOD_RETURN(_ret_ref));
2385 DEFINE_CALLSTATICMETHOD(jchar, Char, T_CHAR
2386 , HOTSPOT_JNI_CALLSTATICCHARMETHOD_ENTRY(env, cls, (uintptr_t)methodID),
2387 HOTSPOT_JNI_CALLSTATICCHARMETHOD_RETURN(_ret_ref));
2388 DEFINE_CALLSTATICMETHOD(jshort, Short, T_SHORT
2389 , HOTSPOT_JNI_CALLSTATICSHORTMETHOD_ENTRY(env, cls, (uintptr_t)methodID),
2390 HOTSPOT_JNI_CALLSTATICSHORTMETHOD_RETURN(_ret_ref));
2391
2392 DEFINE_CALLSTATICMETHOD(jobject, Object, T_OBJECT
2393 , HOTSPOT_JNI_CALLSTATICOBJECTMETHOD_ENTRY(env, cls, (uintptr_t)methodID),
2394 HOTSPOT_JNI_CALLSTATICOBJECTMETHOD_RETURN(_ret_ref));
2395 DEFINE_CALLSTATICMETHOD(jint, Int, T_INT
2396 , HOTSPOT_JNI_CALLSTATICINTMETHOD_ENTRY(env, cls, (uintptr_t)methodID),
2397 HOTSPOT_JNI_CALLSTATICINTMETHOD_RETURN(_ret_ref));
2398 DEFINE_CALLSTATICMETHOD(jlong, Long, T_LONG
2399 , HOTSPOT_JNI_CALLSTATICLONGMETHOD_ENTRY(env, cls, (uintptr_t)methodID),
2400 HOTSPOT_JNI_CALLSTATICLONGMETHOD_RETURN(_ret_ref));
2401 // Float and double probes don't return value because dtrace doesn't currently support it
2402 DEFINE_CALLSTATICMETHOD(jfloat, Float, T_FLOAT
2403 , HOTSPOT_JNI_CALLSTATICFLOATMETHOD_ENTRY(env, cls, (uintptr_t)methodID),
2404 HOTSPOT_JNI_CALLSTATICFLOATMETHOD_RETURN());
2405 DEFINE_CALLSTATICMETHOD(jdouble, Double, T_DOUBLE
2406 , HOTSPOT_JNI_CALLSTATICDOUBLEMETHOD_ENTRY(env, cls, (uintptr_t)methodID),
2407 HOTSPOT_JNI_CALLSTATICDOUBLEMETHOD_RETURN());
2408
2409 #define DEFINE_CALLSTATICMETHODV(ResultType, Result, Tag \
2410 , EntryProbe, ResultProbe) \
2411 \
2412 DT_RETURN_MARK_DECL_FOR(Result, CallStatic##Result##MethodV, ResultType \
2413 , ResultProbe); \
2414 \
2415 JNI_ENTRY(ResultType, \
2416 jni_CallStatic##Result##MethodV(JNIEnv *env, jclass cls, jmethodID methodID, va_list args)) \
2417 JNIWrapper("CallStatic" XSTR(Result) "MethodV"); \
2418 \
2419 EntryProbe; \
2420 ResultType ret = 0;\
2421 DT_RETURN_MARK_FOR(Result, CallStatic##Result##MethodV, ResultType, \
2422 (const ResultType&)ret);\
2423 \
2424 JavaValue jvalue(Tag); \
2425 JNI_ArgumentPusherVaArg ap(methodID, args); \
2426 /* Make sure class is initialized before trying to invoke its method */ \
2427 KlassHandle k(THREAD, java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls))); \
2428 Klass::cast(k())->initialize(CHECK_0); \
2429 jni_invoke_static(env, &jvalue, NULL, JNI_STATIC, methodID, &ap, CHECK_0); \
2430 va_end(args); \
2431 ret = jvalue.get_##ResultType(); \
2432 return ret;\
2433 JNI_END
2434
2435 // the runtime type of subword integral basic types is integer
2436 DEFINE_CALLSTATICMETHODV(jboolean, Boolean, T_BOOLEAN
2437 , HOTSPOT_JNI_CALLSTATICBOOLEANMETHODV_ENTRY(env, cls, (uintptr_t)methodID),
2438 HOTSPOT_JNI_CALLSTATICBOOLEANMETHODV_RETURN(_ret_ref));
2439 DEFINE_CALLSTATICMETHODV(jbyte, Byte, T_BYTE
2440 , HOTSPOT_JNI_CALLSTATICBYTEMETHODV_ENTRY(env, cls, (uintptr_t)methodID),
2441 HOTSPOT_JNI_CALLSTATICBYTEMETHODV_RETURN(_ret_ref));
2442 DEFINE_CALLSTATICMETHODV(jchar, Char, T_CHAR
2443 , HOTSPOT_JNI_CALLSTATICCHARMETHODV_ENTRY(env, cls, (uintptr_t)methodID),
2444 HOTSPOT_JNI_CALLSTATICCHARMETHODV_RETURN(_ret_ref));
2445 DEFINE_CALLSTATICMETHODV(jshort, Short, T_SHORT
2446 , HOTSPOT_JNI_CALLSTATICSHORTMETHODV_ENTRY(env, cls, (uintptr_t)methodID),
2447 HOTSPOT_JNI_CALLSTATICSHORTMETHODV_RETURN(_ret_ref));
2448
2449 DEFINE_CALLSTATICMETHODV(jobject, Object, T_OBJECT
2450 , HOTSPOT_JNI_CALLSTATICOBJECTMETHODV_ENTRY(env, cls, (uintptr_t)methodID),
2451 HOTSPOT_JNI_CALLSTATICOBJECTMETHODV_RETURN(_ret_ref));
2452 DEFINE_CALLSTATICMETHODV(jint, Int, T_INT
2453 , HOTSPOT_JNI_CALLSTATICINTMETHODV_ENTRY(env, cls, (uintptr_t)methodID),
2454 HOTSPOT_JNI_CALLSTATICINTMETHODV_RETURN(_ret_ref));
2455 DEFINE_CALLSTATICMETHODV(jlong, Long, T_LONG
2456 , HOTSPOT_JNI_CALLSTATICLONGMETHODV_ENTRY(env, cls, (uintptr_t)methodID),
2457 HOTSPOT_JNI_CALLSTATICLONGMETHODV_RETURN(_ret_ref));
2458 // Float and double probes don't return value because dtrace doesn't currently support it
2459 DEFINE_CALLSTATICMETHODV(jfloat, Float, T_FLOAT
2460 , HOTSPOT_JNI_CALLSTATICFLOATMETHODV_ENTRY(env, cls, (uintptr_t)methodID),
2461 HOTSPOT_JNI_CALLSTATICFLOATMETHODV_RETURN());
2462 DEFINE_CALLSTATICMETHODV(jdouble, Double, T_DOUBLE
2463 , HOTSPOT_JNI_CALLSTATICDOUBLEMETHODV_ENTRY(env, cls, (uintptr_t)methodID),
2464 HOTSPOT_JNI_CALLSTATICDOUBLEMETHODV_RETURN());
2465
2466 #define DEFINE_CALLSTATICMETHODA(ResultType, Result, Tag \
2467 , EntryProbe, ResultProbe) \
2468 \
2469 DT_RETURN_MARK_DECL_FOR(Result, CallStatic##Result##MethodA, ResultType \
2470 , ResultProbe); \
2471 \
2472 JNI_ENTRY(ResultType, \
2473 jni_CallStatic##Result##MethodA(JNIEnv *env, jclass cls, jmethodID methodID, const jvalue *args)) \
2474 JNIWrapper("CallStatic" XSTR(Result) "MethodA"); \
2475 \
2476 EntryProbe; \
2477 ResultType ret = 0;\
2478 DT_RETURN_MARK_FOR(Result, CallStatic##Result##MethodA, ResultType, \
2479 (const ResultType&)ret);\
2480 \
2481 JavaValue jvalue(Tag); \
2482 JNI_ArgumentPusherArray ap(methodID, args); \
2483 jni_invoke_static(env, &jvalue, NULL, JNI_STATIC, methodID, &ap, CHECK_0); \
2484 ret = jvalue.get_##ResultType(); \
2485 return ret;\
2486 JNI_END
2487
2488 // the runtime type of subword integral basic types is integer
2489 DEFINE_CALLSTATICMETHODA(jboolean, Boolean, T_BOOLEAN
2490 , HOTSPOT_JNI_CALLSTATICBOOLEANMETHODA_ENTRY(env, cls, (uintptr_t)methodID),
2491 HOTSPOT_JNI_CALLSTATICBOOLEANMETHODA_RETURN(_ret_ref));
2492 DEFINE_CALLSTATICMETHODA(jbyte, Byte, T_BYTE
2493 , HOTSPOT_JNI_CALLSTATICBYTEMETHODA_ENTRY(env, cls, (uintptr_t)methodID),
2494 HOTSPOT_JNI_CALLSTATICBYTEMETHODA_RETURN(_ret_ref));
2495 DEFINE_CALLSTATICMETHODA(jchar, Char, T_CHAR
2496 , HOTSPOT_JNI_CALLSTATICCHARMETHODA_ENTRY(env, cls, (uintptr_t)methodID),
2497 HOTSPOT_JNI_CALLSTATICCHARMETHODA_RETURN(_ret_ref));
2498 DEFINE_CALLSTATICMETHODA(jshort, Short, T_SHORT
2499 , HOTSPOT_JNI_CALLSTATICSHORTMETHODA_ENTRY(env, cls, (uintptr_t)methodID),
2500 HOTSPOT_JNI_CALLSTATICSHORTMETHODA_RETURN(_ret_ref));
2501
2502 DEFINE_CALLSTATICMETHODA(jobject, Object, T_OBJECT
2503 , HOTSPOT_JNI_CALLSTATICOBJECTMETHODA_ENTRY(env, cls, (uintptr_t)methodID),
2504 HOTSPOT_JNI_CALLSTATICOBJECTMETHODA_RETURN(_ret_ref));
2505 DEFINE_CALLSTATICMETHODA(jint, Int, T_INT
2506 , HOTSPOT_JNI_CALLSTATICINTMETHODA_ENTRY(env, cls, (uintptr_t)methodID),
2507 HOTSPOT_JNI_CALLSTATICINTMETHODA_RETURN(_ret_ref));
2508 DEFINE_CALLSTATICMETHODA(jlong, Long, T_LONG
2509 , HOTSPOT_JNI_CALLSTATICLONGMETHODA_ENTRY(env, cls, (uintptr_t)methodID),
2510 HOTSPOT_JNI_CALLSTATICLONGMETHODA_RETURN(_ret_ref));
2511 // Float and double probes don't return value because dtrace doesn't currently support it
2512 DEFINE_CALLSTATICMETHODA(jfloat, Float, T_FLOAT
2513 , HOTSPOT_JNI_CALLSTATICFLOATMETHODA_ENTRY(env, cls, (uintptr_t)methodID),
2514 HOTSPOT_JNI_CALLSTATICFLOATMETHODA_RETURN());
2515 DEFINE_CALLSTATICMETHODA(jdouble, Double, T_DOUBLE
2516 , HOTSPOT_JNI_CALLSTATICDOUBLEMETHODA_ENTRY(env, cls, (uintptr_t)methodID),
2517 HOTSPOT_JNI_CALLSTATICDOUBLEMETHODA_RETURN());
2518
2519 DT_VOID_RETURN_MARK_DECL(CallStaticVoidMethod
2520 , HOTSPOT_JNI_CALLSTATICVOIDMETHOD_RETURN());
2521 DT_VOID_RETURN_MARK_DECL(CallStaticVoidMethodV
2522 , HOTSPOT_JNI_CALLSTATICVOIDMETHODV_RETURN());
2523 DT_VOID_RETURN_MARK_DECL(CallStaticVoidMethodA
2524 , HOTSPOT_JNI_CALLSTATICVOIDMETHODA_RETURN());
2525 #endif /* USDT2 */
2526
2527 JNI_ENTRY(void, jni_CallStaticVoidMethod(JNIEnv *env, jclass cls, jmethodID methodID, ...))
2528 JNIWrapper("CallStaticVoidMethod");
2529 #ifndef USDT2
2530 DTRACE_PROBE3(hotspot_jni, CallStaticVoidMethod__entry, env, cls, methodID);
2531 #else /* USDT2 */
2532 HOTSPOT_JNI_CALLSTATICVOIDMETHOD_ENTRY(
2533 env, cls, (uintptr_t) methodID);
2534 #endif /* USDT2 */
2535 DT_VOID_RETURN_MARK(CallStaticVoidMethod);
2536
2537 va_list args;
2538 va_start(args, methodID);
2539 JavaValue jvalue(T_VOID);
2540 JNI_ArgumentPusherVaArg ap(methodID, args);
2541 jni_invoke_static(env, &jvalue, NULL, JNI_STATIC, methodID, &ap, CHECK);
2542 va_end(args);
2543 JNI_END
2544
2545
2546 JNI_ENTRY(void, jni_CallStaticVoidMethodV(JNIEnv *env, jclass cls, jmethodID methodID, va_list args))
2547 JNIWrapper("CallStaticVoidMethodV");
2548 #ifndef USDT2
2549 DTRACE_PROBE3(hotspot_jni, CallStaticVoidMethodV__entry, env, cls, methodID);
2550 #else /* USDT2 */
2551 HOTSPOT_JNI_CALLSTATICVOIDMETHODV_ENTRY(
2552 env, cls, (uintptr_t) methodID);
2553 #endif /* USDT2 */
2554 DT_VOID_RETURN_MARK(CallStaticVoidMethodV);
2555
2556 JavaValue jvalue(T_VOID);
2557 JNI_ArgumentPusherVaArg ap(methodID, args);
2558 jni_invoke_static(env, &jvalue, NULL, JNI_STATIC, methodID, &ap, CHECK);
2559 JNI_END
2560
2561
2562 JNI_ENTRY(void, jni_CallStaticVoidMethodA(JNIEnv *env, jclass cls, jmethodID methodID, const jvalue *args))
2563 JNIWrapper("CallStaticVoidMethodA");
2564 #ifndef USDT2
2565 DTRACE_PROBE3(hotspot_jni, CallStaticVoidMethodA__entry, env, cls, methodID);
2566 #else /* USDT2 */
2567 HOTSPOT_JNI_CALLSTATICVOIDMETHODA_ENTRY(
2568 env, cls, (uintptr_t) methodID);
2569 #endif /* USDT2 */
2570 DT_VOID_RETURN_MARK(CallStaticVoidMethodA);
2571
2572 JavaValue jvalue(T_VOID);
2573 JNI_ArgumentPusherArray ap(methodID, args);
2574 jni_invoke_static(env, &jvalue, NULL, JNI_STATIC, methodID, &ap, CHECK);
2575 JNI_END
2576
2577
2578 //
2579 // Accessing Fields
2580 //
2581
2582
2583 #ifndef USDT2
2584 DT_RETURN_MARK_DECL(GetFieldID, jfieldID);
2585 #else /* USDT2 */
2586 DT_RETURN_MARK_DECL(GetFieldID, jfieldID
2587 , HOTSPOT_JNI_GETFIELDID_RETURN((uintptr_t)_ret_ref));
2588 #endif /* USDT2 */
2589
2590 JNI_ENTRY(jfieldID, jni_GetFieldID(JNIEnv *env, jclass clazz,
2591 const char *name, const char *sig))
2592 JNIWrapper("GetFieldID");
2593 #ifndef USDT2
2594 DTRACE_PROBE4(hotspot_jni, GetFieldID__entry, env, clazz, name, sig);
2595 #else /* USDT2 */
2596 HOTSPOT_JNI_GETFIELDID_ENTRY(
2597 env, clazz, (char *) name, (char *) sig);
2598 #endif /* USDT2 */
2599 jfieldID ret = 0;
2600 DT_RETURN_MARK(GetFieldID, jfieldID, (const jfieldID&)ret);
2601
2602 // The class should have been loaded (we have an instance of the class
2603 // passed in) so the field and signature should already be in the symbol
2604 // table. If they're not there, the field doesn't exist.
2605 TempNewSymbol fieldname = SymbolTable::probe(name, (int)strlen(name));
2606 TempNewSymbol signame = SymbolTable::probe(sig, (int)strlen(sig));
2607 if (fieldname == NULL || signame == NULL) {
2608 THROW_MSG_0(vmSymbols::java_lang_NoSuchFieldError(), (char*) name);
2609 }
2610 KlassHandle k(THREAD,
2611 java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(clazz)));
2612 // Make sure class is initialized before handing id's out to fields
2613 Klass::cast(k())->initialize(CHECK_NULL);
2614
2615 fieldDescriptor fd;
2616 if (!Klass::cast(k())->oop_is_instance() ||
2617 !instanceKlass::cast(k())->find_field(fieldname, signame, false, &fd)) {
2618 THROW_MSG_0(vmSymbols::java_lang_NoSuchFieldError(), (char*) name);
2619 }
2620
2621 // A jfieldID for a non-static field is simply the offset of the field within the instanceOop
2622 // It may also have hash bits for k, if VerifyJNIFields is turned on.
2623 ret = jfieldIDWorkaround::to_instance_jfieldID(k(), fd.offset());
2624 return ret;
2625 JNI_END
2626
2627
2628 JNI_ENTRY(jobject, jni_GetObjectField(JNIEnv *env, jobject obj, jfieldID fieldID))
2629 JNIWrapper("GetObjectField");
2630 #ifndef USDT2
2631 DTRACE_PROBE3(hotspot_jni, GetObjectField__entry, env, obj, fieldID);
2632 #else /* USDT2 */
2633 HOTSPOT_JNI_GETOBJECTFIELD_ENTRY(
2634 env, obj, (uintptr_t) fieldID);
2635 #endif /* USDT2 */
2636 oop o = JNIHandles::resolve_non_null(obj);
2637 klassOop k = o->klass();
2638 int offset = jfieldIDWorkaround::from_instance_jfieldID(k, fieldID);
2639 // Keep JVMTI addition small and only check enabled flag here.
2640 // jni_GetField_probe() assumes that is okay to create handles.
2641 if (JvmtiExport::should_post_field_access()) {
2642 o = JvmtiExport::jni_GetField_probe(thread, obj, o, k, fieldID, false);
2643 }
2644 jobject ret = JNIHandles::make_local(env, o->obj_field(offset));
2645 #ifndef SERIALGC
2646 // If G1 is enabled and we are accessing the value of the referent
2647 // field in a reference object then we need to register a non-null
2648 // referent with the SATB barrier.
2649 if (UseG1GC) {
2650 bool needs_barrier = false;
2651
2652 if (ret != NULL &&
2653 offset == java_lang_ref_Reference::referent_offset &&
2654 instanceKlass::cast(k)->reference_type() != REF_NONE) {
2655 assert(instanceKlass::cast(k)->is_subclass_of(SystemDictionary::Reference_klass()), "sanity");
2656 needs_barrier = true;
2657 }
2658
2659 if (needs_barrier) {
2660 oop referent = JNIHandles::resolve(ret);
2661 G1SATBCardTableModRefBS::enqueue(referent);
2662 }
2663 }
2664 #endif // SERIALGC
2665 #ifndef USDT2
2666 DTRACE_PROBE1(hotspot_jni, GetObjectField__return, ret);
2667 #else /* USDT2 */
2668 HOTSPOT_JNI_GETOBJECTFIELD_RETURN(
2669 ret);
2670 #endif /* USDT2 */
2671 return ret;
2672 JNI_END
2673
2674
2675 #ifndef USDT2
2676 #define DEFINE_GETFIELD(Return,Fieldname,Result) \
2677 \
2678 DT_RETURN_MARK_DECL_FOR(Result, Get##Result##Field, Return);\
2679 \
2680 JNI_QUICK_ENTRY(Return, jni_Get##Result##Field(JNIEnv *env, jobject obj, jfieldID fieldID)) \
2681 JNIWrapper("Get" XSTR(Result) "Field"); \
2682 \
2683 DTRACE_PROBE3(hotspot_jni, Get##Result##Field__entry, env, obj, fieldID);\
2684 Return ret = 0;\
2685 DT_RETURN_MARK_FOR(Result, Get##Result##Field, Return, (const Return&)ret);\
2686 \
2687 oop o = JNIHandles::resolve_non_null(obj); \
2688 klassOop k = o->klass(); \
2689 int offset = jfieldIDWorkaround::from_instance_jfieldID(k, fieldID); \
2690 /* Keep JVMTI addition small and only check enabled flag here. */ \
2691 /* jni_GetField_probe_nh() assumes that is not okay to create handles */ \
2692 /* and creates a ResetNoHandleMark. */ \
2693 if (JvmtiExport::should_post_field_access()) { \
2694 o = JvmtiExport::jni_GetField_probe_nh(thread, obj, o, k, fieldID, false); \
2695 } \
2696 ret = o->Fieldname##_field(offset); \
2697 return ret; \
2698 JNI_END
2699
2700 DEFINE_GETFIELD(jboolean, bool, Boolean)
2701 DEFINE_GETFIELD(jbyte, byte, Byte)
2702 DEFINE_GETFIELD(jchar, char, Char)
2703 DEFINE_GETFIELD(jshort, short, Short)
2704 DEFINE_GETFIELD(jint, int, Int)
2705 DEFINE_GETFIELD(jlong, long, Long)
2706 DEFINE_GETFIELD(jfloat, float, Float)
2707 DEFINE_GETFIELD(jdouble, double, Double)
2708
2709 #else /* USDT2 */
2710
2711 #define DEFINE_GETFIELD(Return,Fieldname,Result \
2712 , EntryProbe, ReturnProbe) \
2713 \
2714 DT_RETURN_MARK_DECL_FOR(Result, Get##Result##Field, Return \
2715 , ReturnProbe); \
2716 \
2717 JNI_QUICK_ENTRY(Return, jni_Get##Result##Field(JNIEnv *env, jobject obj, jfieldID fieldID)) \
2718 JNIWrapper("Get" XSTR(Result) "Field"); \
2719 \
2720 EntryProbe; \
2721 Return ret = 0;\
2722 DT_RETURN_MARK_FOR(Result, Get##Result##Field, Return, (const Return&)ret);\
2723 \
2724 oop o = JNIHandles::resolve_non_null(obj); \
2725 klassOop k = o->klass(); \
2726 int offset = jfieldIDWorkaround::from_instance_jfieldID(k, fieldID); \
2727 /* Keep JVMTI addition small and only check enabled flag here. */ \
2728 /* jni_GetField_probe_nh() assumes that is not okay to create handles */ \
2729 /* and creates a ResetNoHandleMark. */ \
2730 if (JvmtiExport::should_post_field_access()) { \
2731 o = JvmtiExport::jni_GetField_probe_nh(thread, obj, o, k, fieldID, false); \
2732 } \
2733 ret = o->Fieldname##_field(offset); \
2734 return ret; \
2735 JNI_END
2736
2737 DEFINE_GETFIELD(jboolean, bool, Boolean
2738 , HOTSPOT_JNI_GETBOOLEANFIELD_ENTRY(env, obj, (uintptr_t)fieldID),
2739 HOTSPOT_JNI_GETBOOLEANFIELD_RETURN(_ret_ref))
2740 DEFINE_GETFIELD(jbyte, byte, Byte
2741 , HOTSPOT_JNI_GETBYTEFIELD_ENTRY(env, obj, (uintptr_t)fieldID),
2742 HOTSPOT_JNI_GETBYTEFIELD_RETURN(_ret_ref))
2743 DEFINE_GETFIELD(jchar, char, Char
2744 , HOTSPOT_JNI_GETCHARFIELD_ENTRY(env, obj, (uintptr_t)fieldID),
2745 HOTSPOT_JNI_GETCHARFIELD_RETURN(_ret_ref))
2746 DEFINE_GETFIELD(jshort, short, Short
2747 , HOTSPOT_JNI_GETSHORTFIELD_ENTRY(env, obj, (uintptr_t)fieldID),
2748 HOTSPOT_JNI_GETSHORTFIELD_RETURN(_ret_ref))
2749 DEFINE_GETFIELD(jint, int, Int
2750 , HOTSPOT_JNI_GETINTFIELD_ENTRY(env, obj, (uintptr_t)fieldID),
2751 HOTSPOT_JNI_GETINTFIELD_RETURN(_ret_ref))
2752 DEFINE_GETFIELD(jlong, long, Long
2753 , HOTSPOT_JNI_GETLONGFIELD_ENTRY(env, obj, (uintptr_t)fieldID),
2754 HOTSPOT_JNI_GETLONGFIELD_RETURN(_ret_ref))
2755 // Float and double probes don't return value because dtrace doesn't currently support it
2756 DEFINE_GETFIELD(jfloat, float, Float
2757 , HOTSPOT_JNI_GETFLOATFIELD_ENTRY(env, obj, (uintptr_t)fieldID),
2758 HOTSPOT_JNI_GETFLOATFIELD_RETURN())
2759 DEFINE_GETFIELD(jdouble, double, Double
2760 , HOTSPOT_JNI_GETDOUBLEFIELD_ENTRY(env, obj, (uintptr_t)fieldID),
2761 HOTSPOT_JNI_GETDOUBLEFIELD_RETURN())
2762 #endif /* USDT2 */
2763
2764 address jni_GetBooleanField_addr() {
2765 return (address)jni_GetBooleanField;
2766 }
2767 address jni_GetByteField_addr() {
2768 return (address)jni_GetByteField;
2769 }
2770 address jni_GetCharField_addr() {
2771 return (address)jni_GetCharField;
2772 }
2773 address jni_GetShortField_addr() {
2774 return (address)jni_GetShortField;
2775 }
2776 address jni_GetIntField_addr() {
2777 return (address)jni_GetIntField;
2778 }
2779 address jni_GetLongField_addr() {
2780 return (address)jni_GetLongField;
2781 }
2782 address jni_GetFloatField_addr() {
2783 return (address)jni_GetFloatField;
2784 }
2785 address jni_GetDoubleField_addr() {
2786 return (address)jni_GetDoubleField;
2787 }
2788
2789 JNI_QUICK_ENTRY(void, jni_SetObjectField(JNIEnv *env, jobject obj, jfieldID fieldID, jobject value))
2790 JNIWrapper("SetObjectField");
2791 #ifndef USDT2
2792 DTRACE_PROBE4(hotspot_jni, SetObjectField__entry, env, obj, fieldID, value);
2793 #else /* USDT2 */
2794 HOTSPOT_JNI_SETOBJECTFIELD_ENTRY(
2795 env, obj, (uintptr_t) fieldID, value);
2796 #endif /* USDT2 */
2797 oop o = JNIHandles::resolve_non_null(obj);
2798 klassOop k = o->klass();
2799 int offset = jfieldIDWorkaround::from_instance_jfieldID(k, fieldID);
2800 // Keep JVMTI addition small and only check enabled flag here.
2801 // jni_SetField_probe_nh() assumes that is not okay to create handles
2802 // and creates a ResetNoHandleMark.
2803 if (JvmtiExport::should_post_field_modification()) {
2804 jvalue field_value;
2805 field_value.l = value;
2806 o = JvmtiExport::jni_SetField_probe_nh(thread, obj, o, k, fieldID, false, 'L', (jvalue *)&field_value);
2807 }
2808 o->obj_field_put(offset, JNIHandles::resolve(value));
2809 #ifndef USDT2
2810 DTRACE_PROBE(hotspot_jni, SetObjectField__return);
2811 #else /* USDT2 */
2812 HOTSPOT_JNI_SETOBJECTFIELD_RETURN(
2813 );
2814 #endif /* USDT2 */
2815 JNI_END
2816
2817 #ifndef USDT2
2818 #define DEFINE_SETFIELD(Argument,Fieldname,Result,SigType,unionType) \
2819 \
2820 JNI_QUICK_ENTRY(void, jni_Set##Result##Field(JNIEnv *env, jobject obj, jfieldID fieldID, Argument value)) \
2821 JNIWrapper("Set" XSTR(Result) "Field"); \
2822 \
2823 FP_SELECT_##Result( \
2824 DTRACE_PROBE4(hotspot_jni, Set##Result##Field__entry, env, obj, fieldID, value), \
2825 DTRACE_PROBE3(hotspot_jni, Set##Result##Field__entry, env, obj, fieldID)); \
2826 \
2827 oop o = JNIHandles::resolve_non_null(obj); \
2828 klassOop k = o->klass(); \
2829 int offset = jfieldIDWorkaround::from_instance_jfieldID(k, fieldID); \
2830 /* Keep JVMTI addition small and only check enabled flag here. */ \
2831 /* jni_SetField_probe_nh() assumes that is not okay to create handles */ \
2832 /* and creates a ResetNoHandleMark. */ \
2833 if (JvmtiExport::should_post_field_modification()) { \
2834 jvalue field_value; \
2835 field_value.unionType = value; \
2836 o = JvmtiExport::jni_SetField_probe_nh(thread, obj, o, k, fieldID, false, SigType, (jvalue *)&field_value); \
2837 } \
2838 o->Fieldname##_field_put(offset, value); \
2839 DTRACE_PROBE(hotspot_jni, Set##Result##Field__return);\
2840 JNI_END
2841
2842 DEFINE_SETFIELD(jboolean, bool, Boolean, 'Z', z)
2843 DEFINE_SETFIELD(jbyte, byte, Byte, 'B', b)
2844 DEFINE_SETFIELD(jchar, char, Char, 'C', c)
2845 DEFINE_SETFIELD(jshort, short, Short, 'S', s)
2846 DEFINE_SETFIELD(jint, int, Int, 'I', i)
2847 DEFINE_SETFIELD(jlong, long, Long, 'J', j)
2848 DEFINE_SETFIELD(jfloat, float, Float, 'F', f)
2849 DEFINE_SETFIELD(jdouble, double, Double, 'D', d)
2850
2851 #else /* USDT2 */
2852
2853 #define DEFINE_SETFIELD(Argument,Fieldname,Result,SigType,unionType \
2854 , EntryProbe, ReturnProbe) \
2855 \
2856 JNI_QUICK_ENTRY(void, jni_Set##Result##Field(JNIEnv *env, jobject obj, jfieldID fieldID, Argument value)) \
2857 JNIWrapper("Set" XSTR(Result) "Field"); \
2858 \
2859 EntryProbe; \
2860 \
2861 oop o = JNIHandles::resolve_non_null(obj); \
2862 klassOop k = o->klass(); \
2863 int offset = jfieldIDWorkaround::from_instance_jfieldID(k, fieldID); \
2864 /* Keep JVMTI addition small and only check enabled flag here. */ \
2865 /* jni_SetField_probe_nh() assumes that is not okay to create handles */ \
2866 /* and creates a ResetNoHandleMark. */ \
2867 if (JvmtiExport::should_post_field_modification()) { \
2868 jvalue field_value; \
2869 field_value.unionType = value; \
2870 o = JvmtiExport::jni_SetField_probe_nh(thread, obj, o, k, fieldID, false, SigType, (jvalue *)&field_value); \
2871 } \
2872 o->Fieldname##_field_put(offset, value); \
2873 ReturnProbe; \
2874 JNI_END
2875
2876 DEFINE_SETFIELD(jboolean, bool, Boolean, 'Z', z
2877 , HOTSPOT_JNI_SETBOOLEANFIELD_ENTRY(env, obj, (uintptr_t)fieldID, value),
2878 HOTSPOT_JNI_SETBOOLEANFIELD_RETURN())
2879 DEFINE_SETFIELD(jbyte, byte, Byte, 'B', b
2880 , HOTSPOT_JNI_SETBYTEFIELD_ENTRY(env, obj, (uintptr_t)fieldID, value),
2881 HOTSPOT_JNI_SETBYTEFIELD_RETURN())
2882 DEFINE_SETFIELD(jchar, char, Char, 'C', c
2883 , HOTSPOT_JNI_SETCHARFIELD_ENTRY(env, obj, (uintptr_t)fieldID, value),
2884 HOTSPOT_JNI_SETCHARFIELD_RETURN())
2885 DEFINE_SETFIELD(jshort, short, Short, 'S', s
2886 , HOTSPOT_JNI_SETSHORTFIELD_ENTRY(env, obj, (uintptr_t)fieldID, value),
2887 HOTSPOT_JNI_SETSHORTFIELD_RETURN())
2888 DEFINE_SETFIELD(jint, int, Int, 'I', i
2889 , HOTSPOT_JNI_SETINTFIELD_ENTRY(env, obj, (uintptr_t)fieldID, value),
2890 HOTSPOT_JNI_SETINTFIELD_RETURN())
2891 DEFINE_SETFIELD(jlong, long, Long, 'J', j
2892 , HOTSPOT_JNI_SETLONGFIELD_ENTRY(env, obj, (uintptr_t)fieldID, value),
2893 HOTSPOT_JNI_SETLONGFIELD_RETURN())
2894 // Float and double probes don't return value because dtrace doesn't currently support it
2895 DEFINE_SETFIELD(jfloat, float, Float, 'F', f
2896 , HOTSPOT_JNI_SETFLOATFIELD_ENTRY(env, obj, (uintptr_t)fieldID),
2897 HOTSPOT_JNI_SETFLOATFIELD_RETURN())
2898 DEFINE_SETFIELD(jdouble, double, Double, 'D', d
2899 , HOTSPOT_JNI_SETDOUBLEFIELD_ENTRY(env, obj, (uintptr_t)fieldID),
2900 HOTSPOT_JNI_SETDOUBLEFIELD_RETURN())
2901 #endif /* USDT2 */
2902
2903 #ifndef USDT2
2904 DT_RETURN_MARK_DECL(ToReflectedField, jobject);
2905 #else /* USDT2 */
2906 DT_RETURN_MARK_DECL(ToReflectedField, jobject
2907 , HOTSPOT_JNI_TOREFLECTEDFIELD_RETURN(_ret_ref));
2908 #endif /* USDT2 */
2909
2910 JNI_ENTRY(jobject, jni_ToReflectedField(JNIEnv *env, jclass cls, jfieldID fieldID, jboolean isStatic))
2911 JNIWrapper("ToReflectedField");
2912 #ifndef USDT2
2913 DTRACE_PROBE4(hotspot_jni, ToReflectedField__entry,
2914 env, cls, fieldID, isStatic);
2915 #else /* USDT2 */
2916 HOTSPOT_JNI_TOREFLECTEDFIELD_ENTRY(
2917 env, cls, (uintptr_t) fieldID, isStatic);
2918 #endif /* USDT2 */
2919 jobject ret = NULL;
2920 DT_RETURN_MARK(ToReflectedField, jobject, (const jobject&)ret);
2921
2922 fieldDescriptor fd;
2923 bool found = false;
2924 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls));
2925
2926 assert(jfieldIDWorkaround::is_static_jfieldID(fieldID) == (isStatic != 0), "invalid fieldID");
2927
2928 if (isStatic) {
2929 // Static field. The fieldID a JNIid specifying the field holder and the offset within the klassOop.
2930 JNIid* id = jfieldIDWorkaround::from_static_jfieldID(fieldID);
2931 assert(id->is_static_field_id(), "invalid static field id");
2932 found = id->find_local_field(&fd);
2933 } else {
2934 // Non-static field. The fieldID is really the offset of the field within the instanceOop.
2935 int offset = jfieldIDWorkaround::from_instance_jfieldID(k, fieldID);
2936 found = instanceKlass::cast(k)->find_field_from_offset(offset, false, &fd);
2937 }
2938 assert(found, "bad fieldID passed into jni_ToReflectedField");
2939 oop reflected = Reflection::new_field(&fd, UseNewReflection, CHECK_NULL);
2940 ret = JNIHandles::make_local(env, reflected);
2941 return ret;
2942 JNI_END
2943
2944
2945 //
2946 // Accessing Static Fields
2947 //
2948 #ifndef USDT2
2949 DT_RETURN_MARK_DECL(GetStaticFieldID, jfieldID);
2950 #else /* USDT2 */
2951 DT_RETURN_MARK_DECL(GetStaticFieldID, jfieldID
2952 , HOTSPOT_JNI_GETSTATICFIELDID_RETURN((uintptr_t)_ret_ref));
2953 #endif /* USDT2 */
2954
2955 JNI_ENTRY(jfieldID, jni_GetStaticFieldID(JNIEnv *env, jclass clazz,
2956 const char *name, const char *sig))
2957 JNIWrapper("GetStaticFieldID");
2958 #ifndef USDT2
2959 DTRACE_PROBE4(hotspot_jni, GetStaticFieldID__entry, env, clazz, name, sig);
2960 #else /* USDT2 */
2961 HOTSPOT_JNI_GETSTATICFIELDID_ENTRY(
2962 env, clazz, (char *) name, (char *) sig);
2963 #endif /* USDT2 */
2964 jfieldID ret = NULL;
2965 DT_RETURN_MARK(GetStaticFieldID, jfieldID, (const jfieldID&)ret);
2966
2967 // The class should have been loaded (we have an instance of the class
2968 // passed in) so the field and signature should already be in the symbol
2969 // table. If they're not there, the field doesn't exist.
2970 TempNewSymbol fieldname = SymbolTable::probe(name, (int)strlen(name));
2971 TempNewSymbol signame = SymbolTable::probe(sig, (int)strlen(sig));
2972 if (fieldname == NULL || signame == NULL) {
2973 THROW_MSG_0(vmSymbols::java_lang_NoSuchFieldError(), (char*) name);
2974 }
2975 KlassHandle k(THREAD,
2976 java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(clazz)));
2977 // Make sure class is initialized before handing id's out to static fields
2978 Klass::cast(k())->initialize(CHECK_NULL);
2979
2980 fieldDescriptor fd;
2981 if (!Klass::cast(k())->oop_is_instance() ||
2982 !instanceKlass::cast(k())->find_field(fieldname, signame, true, &fd)) {
2983 THROW_MSG_0(vmSymbols::java_lang_NoSuchFieldError(), (char*) name);
2984 }
2985
2986 // A jfieldID for a static field is a JNIid specifying the field holder and the offset within the klassOop
2987 JNIid* id = instanceKlass::cast(fd.field_holder())->jni_id_for(fd.offset());
2988 debug_only(id->set_is_static_field_id();)
2989
2990 debug_only(id->verify(fd.field_holder()));
2991
2992 ret = jfieldIDWorkaround::to_static_jfieldID(id);
2993 return ret;
2994 JNI_END
2995
2996
2997 JNI_ENTRY(jobject, jni_GetStaticObjectField(JNIEnv *env, jclass clazz, jfieldID fieldID))
2998 JNIWrapper("GetStaticObjectField");
2999 #ifndef USDT2
3000 DTRACE_PROBE3(hotspot_jni, GetStaticObjectField__entry, env, clazz, fieldID);
3001 #else /* USDT2 */
3002 HOTSPOT_JNI_GETSTATICOBJECTFIELD_ENTRY(
3003 env, clazz, (uintptr_t) fieldID);
3004 #endif /* USDT2 */
3005 DEBUG_ONLY(klassOop param_k = jniCheck::validate_class(thread, clazz);)
3006 JNIid* id = jfieldIDWorkaround::from_static_jfieldID(fieldID);
3007 assert(id->is_static_field_id(), "invalid static field id");
3008 // Keep JVMTI addition small and only check enabled flag here.
3009 // jni_GetField_probe() assumes that is okay to create handles.
3010 if (JvmtiExport::should_post_field_access()) {
3011 JvmtiExport::jni_GetField_probe(thread, NULL, NULL, id->holder(), fieldID, true);
3012 }
3013 jobject ret = JNIHandles::make_local(id->holder()->java_mirror()->obj_field(id->offset()));
3014 #ifndef USDT2
3015 DTRACE_PROBE1(hotspot_jni, GetStaticObjectField__return, ret);
3016 #else /* USDT2 */
3017 HOTSPOT_JNI_GETSTATICOBJECTFIELD_RETURN(
3018 ret);
3019 #endif /* USDT2 */
3020 return ret;
3021 JNI_END
3022
3023 #ifndef USDT2
3024 #define DEFINE_GETSTATICFIELD(Return,Fieldname,Result) \
3025 \
3026 DT_RETURN_MARK_DECL_FOR(Result, GetStatic##Result##Field, Return);\
3027 \
3028 JNI_ENTRY(Return, jni_GetStatic##Result##Field(JNIEnv *env, jclass clazz, jfieldID fieldID)) \
3029 JNIWrapper("GetStatic" XSTR(Result) "Field"); \
3030 DTRACE_PROBE3(hotspot_jni, GetStatic##Result##Field__entry, env, clazz, fieldID);\
3031 Return ret = 0;\
3032 DT_RETURN_MARK_FOR(Result, GetStatic##Result##Field, Return, \
3033 (const Return&)ret);\
3034 JNIid* id = jfieldIDWorkaround::from_static_jfieldID(fieldID); \
3035 assert(id->is_static_field_id(), "invalid static field id"); \
3036 /* Keep JVMTI addition small and only check enabled flag here. */ \
3037 /* jni_GetField_probe() assumes that is okay to create handles. */ \
3038 if (JvmtiExport::should_post_field_access()) { \
3039 JvmtiExport::jni_GetField_probe(thread, NULL, NULL, id->holder(), fieldID, true); \
3040 } \
3041 ret = id->holder()->java_mirror()-> Fieldname##_field (id->offset()); \
3042 return ret;\
3043 JNI_END
3044
3045 DEFINE_GETSTATICFIELD(jboolean, bool, Boolean)
3046 DEFINE_GETSTATICFIELD(jbyte, byte, Byte)
3047 DEFINE_GETSTATICFIELD(jchar, char, Char)
3048 DEFINE_GETSTATICFIELD(jshort, short, Short)
3049 DEFINE_GETSTATICFIELD(jint, int, Int)
3050 DEFINE_GETSTATICFIELD(jlong, long, Long)
3051 DEFINE_GETSTATICFIELD(jfloat, float, Float)
3052 DEFINE_GETSTATICFIELD(jdouble, double, Double)
3053
3054 #else /* USDT2 */
3055
3056 #define DEFINE_GETSTATICFIELD(Return,Fieldname,Result \
3057 , EntryProbe, ReturnProbe) \
3058 \
3059 DT_RETURN_MARK_DECL_FOR(Result, GetStatic##Result##Field, Return \
3060 , ReturnProbe); \
3061 \
3062 JNI_ENTRY(Return, jni_GetStatic##Result##Field(JNIEnv *env, jclass clazz, jfieldID fieldID)) \
3063 JNIWrapper("GetStatic" XSTR(Result) "Field"); \
3064 EntryProbe; \
3065 Return ret = 0;\
3066 DT_RETURN_MARK_FOR(Result, GetStatic##Result##Field, Return, \
3067 (const Return&)ret);\
3068 JNIid* id = jfieldIDWorkaround::from_static_jfieldID(fieldID); \
3069 assert(id->is_static_field_id(), "invalid static field id"); \
3070 /* Keep JVMTI addition small and only check enabled flag here. */ \
3071 /* jni_GetField_probe() assumes that is okay to create handles. */ \
3072 if (JvmtiExport::should_post_field_access()) { \
3073 JvmtiExport::jni_GetField_probe(thread, NULL, NULL, id->holder(), fieldID, true); \
3074 } \
3075 ret = id->holder()->java_mirror()-> Fieldname##_field (id->offset()); \
3076 return ret;\
3077 JNI_END
3078
3079 DEFINE_GETSTATICFIELD(jboolean, bool, Boolean
3080 , HOTSPOT_JNI_GETSTATICBOOLEANFIELD_ENTRY(env, clazz, (uintptr_t) fieldID), HOTSPOT_JNI_GETSTATICBOOLEANFIELD_RETURN(_ret_ref))
3081 DEFINE_GETSTATICFIELD(jbyte, byte, Byte
3082 , HOTSPOT_JNI_GETSTATICBYTEFIELD_ENTRY(env, clazz, (uintptr_t) fieldID), HOTSPOT_JNI_GETSTATICBYTEFIELD_RETURN(_ret_ref) )
3083 DEFINE_GETSTATICFIELD(jchar, char, Char
3084 , HOTSPOT_JNI_GETSTATICCHARFIELD_ENTRY(env, clazz, (uintptr_t) fieldID), HOTSPOT_JNI_GETSTATICCHARFIELD_RETURN(_ret_ref) )
3085 DEFINE_GETSTATICFIELD(jshort, short, Short
3086 , HOTSPOT_JNI_GETSTATICSHORTFIELD_ENTRY(env, clazz, (uintptr_t) fieldID), HOTSPOT_JNI_GETSTATICSHORTFIELD_RETURN(_ret_ref) )
3087 DEFINE_GETSTATICFIELD(jint, int, Int
3088 , HOTSPOT_JNI_GETSTATICINTFIELD_ENTRY(env, clazz, (uintptr_t) fieldID), HOTSPOT_JNI_GETSTATICINTFIELD_RETURN(_ret_ref) )
3089 DEFINE_GETSTATICFIELD(jlong, long, Long
3090 , HOTSPOT_JNI_GETSTATICLONGFIELD_ENTRY(env, clazz, (uintptr_t) fieldID), HOTSPOT_JNI_GETSTATICLONGFIELD_RETURN(_ret_ref) )
3091 // Float and double probes don't return value because dtrace doesn't currently support it
3092 DEFINE_GETSTATICFIELD(jfloat, float, Float
3093 , HOTSPOT_JNI_GETSTATICFLOATFIELD_ENTRY(env, clazz, (uintptr_t) fieldID), HOTSPOT_JNI_GETSTATICFLOATFIELD_RETURN() )
3094 DEFINE_GETSTATICFIELD(jdouble, double, Double
3095 , HOTSPOT_JNI_GETSTATICDOUBLEFIELD_ENTRY(env, clazz, (uintptr_t) fieldID), HOTSPOT_JNI_GETSTATICDOUBLEFIELD_RETURN() )
3096 #endif /* USDT2 */
3097
3098 JNI_ENTRY(void, jni_SetStaticObjectField(JNIEnv *env, jclass clazz, jfieldID fieldID, jobject value))
3099 JNIWrapper("SetStaticObjectField");
3100 #ifndef USDT2
3101 DTRACE_PROBE4(hotspot_jni, SetStaticObjectField__entry, env, clazz, fieldID, value);
3102 #else /* USDT2 */
3103 HOTSPOT_JNI_SETSTATICOBJECTFIELD_ENTRY(
3104 env, clazz, (uintptr_t) fieldID, value);
3105 #endif /* USDT2 */
3106 JNIid* id = jfieldIDWorkaround::from_static_jfieldID(fieldID);
3107 assert(id->is_static_field_id(), "invalid static field id");
3108 // Keep JVMTI addition small and only check enabled flag here.
3109 // jni_SetField_probe() assumes that is okay to create handles.
3110 if (JvmtiExport::should_post_field_modification()) {
3111 jvalue field_value;
3112 field_value.l = value;
3113 JvmtiExport::jni_SetField_probe(thread, NULL, NULL, id->holder(), fieldID, true, 'L', (jvalue *)&field_value);
3114 }
3115 id->holder()->java_mirror()->obj_field_put(id->offset(), JNIHandles::resolve(value));
3116 #ifndef USDT2
3117 DTRACE_PROBE(hotspot_jni, SetStaticObjectField__return);
3118 #else /* USDT2 */
3119 HOTSPOT_JNI_SETSTATICOBJECTFIELD_RETURN(
3120 );
3121 #endif /* USDT2 */
3122 JNI_END
3123
3124
3125 #ifndef USDT2
3126 #define DEFINE_SETSTATICFIELD(Argument,Fieldname,Result,SigType,unionType) \
3127 \
3128 JNI_ENTRY(void, jni_SetStatic##Result##Field(JNIEnv *env, jclass clazz, jfieldID fieldID, Argument value)) \
3129 JNIWrapper("SetStatic" XSTR(Result) "Field"); \
3130 FP_SELECT_##Result( \
3131 DTRACE_PROBE4(hotspot_jni, SetStatic##Result##Field__entry, env, clazz, fieldID, value), \
3132 DTRACE_PROBE3(hotspot_jni, SetStatic##Result##Field__entry, env, clazz, fieldID)); \
3133 \
3134 JNIid* id = jfieldIDWorkaround::from_static_jfieldID(fieldID); \
3135 assert(id->is_static_field_id(), "invalid static field id"); \
3136 /* Keep JVMTI addition small and only check enabled flag here. */ \
3137 /* jni_SetField_probe() assumes that is okay to create handles. */ \
3138 if (JvmtiExport::should_post_field_modification()) { \
3139 jvalue field_value; \
3140 field_value.unionType = value; \
3141 JvmtiExport::jni_SetField_probe(thread, NULL, NULL, id->holder(), fieldID, true, SigType, (jvalue *)&field_value); \
3142 } \
3143 id->holder()->java_mirror()-> Fieldname##_field_put (id->offset(), value); \
3144 DTRACE_PROBE(hotspot_jni, SetStatic##Result##Field__return);\
3145 JNI_END
3146
3147 DEFINE_SETSTATICFIELD(jboolean, bool, Boolean, 'Z', z)
3148 DEFINE_SETSTATICFIELD(jbyte, byte, Byte, 'B', b)
3149 DEFINE_SETSTATICFIELD(jchar, char, Char, 'C', c)
3150 DEFINE_SETSTATICFIELD(jshort, short, Short, 'S', s)
3151 DEFINE_SETSTATICFIELD(jint, int, Int, 'I', i)
3152 DEFINE_SETSTATICFIELD(jlong, long, Long, 'J', j)
3153 DEFINE_SETSTATICFIELD(jfloat, float, Float, 'F', f)
3154 DEFINE_SETSTATICFIELD(jdouble, double, Double, 'D', d)
3155
3156 #else /* USDT2 */
3157
3158 #define DEFINE_SETSTATICFIELD(Argument,Fieldname,Result,SigType,unionType \
3159 , EntryProbe, ReturnProbe) \
3160 \
3161 JNI_ENTRY(void, jni_SetStatic##Result##Field(JNIEnv *env, jclass clazz, jfieldID fieldID, Argument value)) \
3162 JNIWrapper("SetStatic" XSTR(Result) "Field"); \
3163 EntryProbe; \
3164 \
3165 JNIid* id = jfieldIDWorkaround::from_static_jfieldID(fieldID); \
3166 assert(id->is_static_field_id(), "invalid static field id"); \
3167 /* Keep JVMTI addition small and only check enabled flag here. */ \
3168 /* jni_SetField_probe() assumes that is okay to create handles. */ \
3169 if (JvmtiExport::should_post_field_modification()) { \
3170 jvalue field_value; \
3171 field_value.unionType = value; \
3172 JvmtiExport::jni_SetField_probe(thread, NULL, NULL, id->holder(), fieldID, true, SigType, (jvalue *)&field_value); \
3173 } \
3174 id->holder()->java_mirror()-> Fieldname##_field_put (id->offset(), value); \
3175 ReturnProbe;\
3176 JNI_END
3177
3178 DEFINE_SETSTATICFIELD(jboolean, bool, Boolean, 'Z', z
3179 , HOTSPOT_JNI_SETBOOLEANFIELD_ENTRY(env, clazz, (uintptr_t)fieldID, value),
3180 HOTSPOT_JNI_SETBOOLEANFIELD_RETURN())
3181 DEFINE_SETSTATICFIELD(jbyte, byte, Byte, 'B', b
3182 , HOTSPOT_JNI_SETSTATICBYTEFIELD_ENTRY(env, clazz, (uintptr_t) fieldID, value),
3183 HOTSPOT_JNI_SETSTATICBYTEFIELD_RETURN())
3184 DEFINE_SETSTATICFIELD(jchar, char, Char, 'C', c
3185 , HOTSPOT_JNI_SETSTATICCHARFIELD_ENTRY(env, clazz, (uintptr_t) fieldID, value),
3186 HOTSPOT_JNI_SETSTATICCHARFIELD_RETURN())
3187 DEFINE_SETSTATICFIELD(jshort, short, Short, 'S', s
3188 , HOTSPOT_JNI_SETSTATICSHORTFIELD_ENTRY(env, clazz, (uintptr_t) fieldID, value),
3189 HOTSPOT_JNI_SETSTATICSHORTFIELD_RETURN())
3190 DEFINE_SETSTATICFIELD(jint, int, Int, 'I', i
3191 , HOTSPOT_JNI_SETSTATICINTFIELD_ENTRY(env, clazz, (uintptr_t) fieldID, value),
3192 HOTSPOT_JNI_SETSTATICINTFIELD_RETURN())
3193 DEFINE_SETSTATICFIELD(jlong, long, Long, 'J', j
3194 , HOTSPOT_JNI_SETSTATICLONGFIELD_ENTRY(env, clazz, (uintptr_t) fieldID, value),
3195 HOTSPOT_JNI_SETSTATICLONGFIELD_RETURN())
3196 // Float and double probes don't return value because dtrace doesn't currently support it
3197 DEFINE_SETSTATICFIELD(jfloat, float, Float, 'F', f
3198 , HOTSPOT_JNI_SETSTATICFLOATFIELD_ENTRY(env, clazz, (uintptr_t) fieldID),
3199 HOTSPOT_JNI_SETSTATICFLOATFIELD_RETURN())
3200 DEFINE_SETSTATICFIELD(jdouble, double, Double, 'D', d
3201 , HOTSPOT_JNI_SETSTATICDOUBLEFIELD_ENTRY(env, clazz, (uintptr_t) fieldID),
3202 HOTSPOT_JNI_SETSTATICDOUBLEFIELD_RETURN())
3203 #endif /* USDT2 */
3204
3205 //
3206 // String Operations
3207 //
3208
3209 // Unicode Interface
3210
3211 #ifndef USDT2
3212 DT_RETURN_MARK_DECL(NewString, jstring);
3213 #else /* USDT2 */
3214 DT_RETURN_MARK_DECL(NewString, jstring
3215 , HOTSPOT_JNI_NEWSTRING_RETURN(_ret_ref));
3216 #endif /* USDT2 */
3217
3218 JNI_ENTRY(jstring, jni_NewString(JNIEnv *env, const jchar *unicodeChars, jsize len))
3219 JNIWrapper("NewString");
3220 #ifndef USDT2
3221 DTRACE_PROBE3(hotspot_jni, NewString__entry, env, unicodeChars, len);
3222 #else /* USDT2 */
3223 HOTSPOT_JNI_NEWSTRING_ENTRY(
3224 env, (uint16_t *) unicodeChars, len);
3225 #endif /* USDT2 */
3226 jstring ret = NULL;
3227 DT_RETURN_MARK(NewString, jstring, (const jstring&)ret);
3228 oop string=java_lang_String::create_oop_from_unicode((jchar*) unicodeChars, len, CHECK_NULL);
3229 ret = (jstring) JNIHandles::make_local(env, string);
3230 return ret;
3231 JNI_END
3232
3233
3234 JNI_QUICK_ENTRY(jsize, jni_GetStringLength(JNIEnv *env, jstring string))
3235 JNIWrapper("GetStringLength");
3236 #ifndef USDT2
3237 DTRACE_PROBE2(hotspot_jni, GetStringLength__entry, env, string);
3238 #else /* USDT2 */
3239 HOTSPOT_JNI_GETSTRINGLENGTH_ENTRY(
3240 env, string);
3241 #endif /* USDT2 */
3242 jsize ret = java_lang_String::length(JNIHandles::resolve_non_null(string));
3243 #ifndef USDT2
3244 DTRACE_PROBE1(hotspot_jni, GetStringLength__return, ret);
3245 #else /* USDT2 */
3246 HOTSPOT_JNI_GETSTRINGLENGTH_RETURN(
3247 ret);
3248 #endif /* USDT2 */
3249 return ret;
3250 JNI_END
3251
3252
3253 JNI_QUICK_ENTRY(const jchar*, jni_GetStringChars(
3254 JNIEnv *env, jstring string, jboolean *isCopy))
3255 JNIWrapper("GetStringChars");
3256 #ifndef USDT2
3257 DTRACE_PROBE3(hotspot_jni, GetStringChars__entry, env, string, isCopy);
3258 #else /* USDT2 */
3259 HOTSPOT_JNI_GETSTRINGCHARS_ENTRY(
3260 env, string, (uintptr_t *) isCopy);
3261 #endif /* USDT2 */
3262 //%note jni_5
3263 if (isCopy != NULL) {
3264 *isCopy = JNI_TRUE;
3265 }
3266 oop s = JNIHandles::resolve_non_null(string);
3267 int s_len = java_lang_String::length(s);
3268 typeArrayOop s_value = java_lang_String::value(s);
3269 int s_offset = java_lang_String::offset(s);
3270 jchar* buf = NEW_C_HEAP_ARRAY(jchar, s_len + 1, mtInternal); // add one for zero termination
3271 if (s_len > 0) {
3272 memcpy(buf, s_value->char_at_addr(s_offset), sizeof(jchar)*s_len);
3273 }
3274 buf[s_len] = 0;
3275 #ifndef USDT2
3276 DTRACE_PROBE1(hotspot_jni, GetStringChars__return, buf);
3277 #else /* USDT2 */
3278 HOTSPOT_JNI_GETSTRINGCHARS_RETURN(
3279 buf);
3280 #endif /* USDT2 */
3281 return buf;
3282 JNI_END
3283
3284
3285 JNI_QUICK_ENTRY(void, jni_ReleaseStringChars(JNIEnv *env, jstring str, const jchar *chars))
3286 JNIWrapper("ReleaseStringChars");
3287 #ifndef USDT2
3288 DTRACE_PROBE3(hotspot_jni, ReleaseStringChars__entry, env, str, chars);
3289 #else /* USDT2 */
3290 HOTSPOT_JNI_RELEASESTRINGCHARS_ENTRY(
3291 env, str, (uint16_t *) chars);
3292 #endif /* USDT2 */
3293 //%note jni_6
3294 if (chars != NULL) {
3295 // Since String objects are supposed to be immutable, don't copy any
3296 // new data back. A bad user will have to go after the char array.
3297 FreeHeap((void*) chars);
3298 }
3299 #ifndef USDT2
3300 DTRACE_PROBE(hotspot_jni, ReleaseStringChars__return);
3301 #else /* USDT2 */
3302 HOTSPOT_JNI_RELEASESTRINGCHARS_RETURN(
3303 );
3304 #endif /* USDT2 */
3305 JNI_END
3306
3307
3308 // UTF Interface
3309
3310 #ifndef USDT2
3311 DT_RETURN_MARK_DECL(NewStringUTF, jstring);
3312 #else /* USDT2 */
3313 DT_RETURN_MARK_DECL(NewStringUTF, jstring
3314 , HOTSPOT_JNI_NEWSTRINGUTF_RETURN(_ret_ref));
3315 #endif /* USDT2 */
3316
3317 JNI_ENTRY(jstring, jni_NewStringUTF(JNIEnv *env, const char *bytes))
3318 JNIWrapper("NewStringUTF");
3319 #ifndef USDT2
3320 DTRACE_PROBE2(hotspot_jni, NewStringUTF__entry, env, bytes);
3321 #else /* USDT2 */
3322 HOTSPOT_JNI_NEWSTRINGUTF_ENTRY(
3323 env, (char *) bytes);
3324 #endif /* USDT2 */
3325 jstring ret;
3326 DT_RETURN_MARK(NewStringUTF, jstring, (const jstring&)ret);
3327
3328 oop result = java_lang_String::create_oop_from_str((char*) bytes, CHECK_NULL);
3329 ret = (jstring) JNIHandles::make_local(env, result);
3330 return ret;
3331 JNI_END
3332
3333
3334 JNI_ENTRY(jsize, jni_GetStringUTFLength(JNIEnv *env, jstring string))
3335 JNIWrapper("GetStringUTFLength");
3336 #ifndef USDT2
3337 DTRACE_PROBE2(hotspot_jni, GetStringUTFLength__entry, env, string);
3338 #else /* USDT2 */
3339 HOTSPOT_JNI_GETSTRINGUTFLENGTH_ENTRY(
3340 env, string);
3341 #endif /* USDT2 */
3342 jsize ret = java_lang_String::utf8_length(JNIHandles::resolve_non_null(string));
3343 #ifndef USDT2
3344 DTRACE_PROBE1(hotspot_jni, GetStringUTFLength__return, ret);
3345 #else /* USDT2 */
3346 HOTSPOT_JNI_GETSTRINGUTFLENGTH_RETURN(
3347 ret);
3348 #endif /* USDT2 */
3349 return ret;
3350 JNI_END
3351
3352
3353 JNI_ENTRY(const char*, jni_GetStringUTFChars(JNIEnv *env, jstring string, jboolean *isCopy))
3354 JNIWrapper("GetStringUTFChars");
3355 #ifndef USDT2
3356 DTRACE_PROBE3(hotspot_jni, GetStringUTFChars__entry, env, string, isCopy);
3357 #else /* USDT2 */
3358 HOTSPOT_JNI_GETSTRINGUTFCHARS_ENTRY(
3359 env, string, (uintptr_t *) isCopy);
3360 #endif /* USDT2 */
3361 oop java_string = JNIHandles::resolve_non_null(string);
3362 size_t length = java_lang_String::utf8_length(java_string);
3363 char* result = AllocateHeap(length + 1, mtInternal);
3364 java_lang_String::as_utf8_string(java_string, result, (int) length + 1);
3365 if (isCopy != NULL) *isCopy = JNI_TRUE;
3366 #ifndef USDT2
3367 DTRACE_PROBE1(hotspot_jni, GetStringUTFChars__return, result);
3368 #else /* USDT2 */
3369 HOTSPOT_JNI_GETSTRINGUTFCHARS_RETURN(
3370 result);
3371 #endif /* USDT2 */
3372 return result;
3373 JNI_END
3374
3375
3376 JNI_LEAF(void, jni_ReleaseStringUTFChars(JNIEnv *env, jstring str, const char *chars))
3377 JNIWrapper("ReleaseStringUTFChars");
3378 #ifndef USDT2
3379 DTRACE_PROBE3(hotspot_jni, ReleaseStringUTFChars__entry, env, str, chars);
3380 #else /* USDT2 */
3381 HOTSPOT_JNI_RELEASESTRINGUTFCHARS_ENTRY(
3382 env, str, (char *) chars);
3383 #endif /* USDT2 */
3384 if (chars != NULL) {
3385 FreeHeap((char*) chars);
3386 }
3387 #ifndef USDT2
3388 DTRACE_PROBE(hotspot_jni, ReleaseStringUTFChars__return);
3389 #else /* USDT2 */
3390 HOTSPOT_JNI_RELEASESTRINGUTFCHARS_RETURN(
3391 );
3392 #endif /* USDT2 */
3393 JNI_END
3394
3395
3396 JNI_QUICK_ENTRY(jsize, jni_GetArrayLength(JNIEnv *env, jarray array))
3397 JNIWrapper("GetArrayLength");
3398 #ifndef USDT2
3399 DTRACE_PROBE2(hotspot_jni, GetArrayLength__entry, env, array);
3400 #else /* USDT2 */
3401 HOTSPOT_JNI_GETARRAYLENGTH_ENTRY(
3402 env, array);
3403 #endif /* USDT2 */
3404 arrayOop a = arrayOop(JNIHandles::resolve_non_null(array));
3405 assert(a->is_array(), "must be array");
3406 jsize ret = a->length();
3407 #ifndef USDT2
3408 DTRACE_PROBE1(hotspot_jni, GetArrayLength__return, ret);
3409 #else /* USDT2 */
3410 HOTSPOT_JNI_GETARRAYLENGTH_RETURN(
3411 ret);
3412 #endif /* USDT2 */
3413 return ret;
3414 JNI_END
3415
3416
3417 //
3418 // Object Array Operations
3419 //
3420
3421 #ifndef USDT2
3422 DT_RETURN_MARK_DECL(NewObjectArray, jobjectArray);
3423 #else /* USDT2 */
3424 DT_RETURN_MARK_DECL(NewObjectArray, jobjectArray
3425 , HOTSPOT_JNI_NEWOBJECTARRAY_RETURN(_ret_ref));
3426 #endif /* USDT2 */
3427
3428 JNI_ENTRY(jobjectArray, jni_NewObjectArray(JNIEnv *env, jsize length, jclass elementClass, jobject initialElement))
3429 JNIWrapper("NewObjectArray");
3430 #ifndef USDT2
3431 DTRACE_PROBE4(hotspot_jni, NewObjectArray__entry, env, length, elementClass, initialElement);
3432 #else /* USDT2 */
3433 HOTSPOT_JNI_NEWOBJECTARRAY_ENTRY(
3434 env, length, elementClass, initialElement);
3435 #endif /* USDT2 */
3436 jobjectArray ret = NULL;
3437 DT_RETURN_MARK(NewObjectArray, jobjectArray, (const jobjectArray&)ret);
3438 KlassHandle ek(THREAD, java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(elementClass)));
3439 klassOop ako = Klass::cast(ek())->array_klass(CHECK_NULL);
3440 KlassHandle ak = KlassHandle(THREAD, ako);
3441 objArrayKlass::cast(ak())->initialize(CHECK_NULL);
3442 objArrayOop result = objArrayKlass::cast(ak())->allocate(length, CHECK_NULL);
3443 oop initial_value = JNIHandles::resolve(initialElement);
3444 if (initial_value != NULL) { // array already initialized with NULL
3445 for (int index = 0; index < length; index++) {
3446 result->obj_at_put(index, initial_value);
3447 }
3448 }
3449 ret = (jobjectArray) JNIHandles::make_local(env, result);
3450 return ret;
3451 JNI_END
3452
3453 #ifndef USDT2
3454 DT_RETURN_MARK_DECL(GetObjectArrayElement, jobject);
3455 #else /* USDT2 */
3456 DT_RETURN_MARK_DECL(GetObjectArrayElement, jobject
3457 , HOTSPOT_JNI_GETOBJECTARRAYELEMENT_RETURN(_ret_ref));
3458 #endif /* USDT2 */
3459
3460 JNI_ENTRY(jobject, jni_GetObjectArrayElement(JNIEnv *env, jobjectArray array, jsize index))
3461 JNIWrapper("GetObjectArrayElement");
3462 #ifndef USDT2
3463 DTRACE_PROBE3(hotspot_jni, GetObjectArrayElement__entry, env, array, index);
3464 #else /* USDT2 */
3465 HOTSPOT_JNI_GETOBJECTARRAYELEMENT_ENTRY(
3466 env, array, index);
3467 #endif /* USDT2 */
3468 jobject ret = NULL;
3469 DT_RETURN_MARK(GetObjectArrayElement, jobject, (const jobject&)ret);
3470 objArrayOop a = objArrayOop(JNIHandles::resolve_non_null(array));
3471 if (a->is_within_bounds(index)) {
3472 ret = JNIHandles::make_local(env, a->obj_at(index));
3473 return ret;
3474 } else {
3475 char buf[jintAsStringSize];
3476 sprintf(buf, "%d", index);
3477 THROW_MSG_0(vmSymbols::java_lang_ArrayIndexOutOfBoundsException(), buf);
3478 }
3479 JNI_END
3480
3481 #ifndef USDT2
3482 DT_VOID_RETURN_MARK_DECL(SetObjectArrayElement);
3483 #else /* USDT2 */
3484 DT_VOID_RETURN_MARK_DECL(SetObjectArrayElement
3485 , HOTSPOT_JNI_SETOBJECTARRAYELEMENT_RETURN());
3486 #endif /* USDT2 */
3487
3488 JNI_ENTRY(void, jni_SetObjectArrayElement(JNIEnv *env, jobjectArray array, jsize index, jobject value))
3489 JNIWrapper("SetObjectArrayElement");
3490 #ifndef USDT2
3491 DTRACE_PROBE4(hotspot_jni, SetObjectArrayElement__entry, env, array, index, value);
3492 #else /* USDT2 */
3493 HOTSPOT_JNI_SETOBJECTARRAYELEMENT_ENTRY(
3494 env, array, index, value);
3495 #endif /* USDT2 */
3496 DT_VOID_RETURN_MARK(SetObjectArrayElement);
3497
3498 objArrayOop a = objArrayOop(JNIHandles::resolve_non_null(array));
3499 oop v = JNIHandles::resolve(value);
3500 if (a->is_within_bounds(index)) {
3501 if (v == NULL || v->is_a(objArrayKlass::cast(a->klass())->element_klass())) {
3502 a->obj_at_put(index, v);
3503 } else {
3504 THROW(vmSymbols::java_lang_ArrayStoreException());
3505 }
3506 } else {
3507 char buf[jintAsStringSize];
3508 sprintf(buf, "%d", index);
3509 THROW_MSG(vmSymbols::java_lang_ArrayIndexOutOfBoundsException(), buf);
3510 }
3511 JNI_END
3512
3513
3514 #ifndef USDT2
3515 #define DEFINE_NEWSCALARARRAY(Return,Allocator,Result) \
3516 \
3517 DT_RETURN_MARK_DECL(New##Result##Array, Return); \
3518 \
3519 JNI_ENTRY(Return, \
3520 jni_New##Result##Array(JNIEnv *env, jsize len)) \
3521 JNIWrapper("New" XSTR(Result) "Array"); \
3522 DTRACE_PROBE2(hotspot_jni, New##Result##Array__entry, env, len);\
3523 Return ret = NULL;\
3524 DT_RETURN_MARK(New##Result##Array, Return, (const Return&)ret);\
3525 \
3526 oop obj= oopFactory::Allocator(len, CHECK_0); \
3527 ret = (Return) JNIHandles::make_local(env, obj); \
3528 return ret;\
3529 JNI_END
3530
3531 DEFINE_NEWSCALARARRAY(jbooleanArray, new_boolArray, Boolean)
3532 DEFINE_NEWSCALARARRAY(jbyteArray, new_byteArray, Byte)
3533 DEFINE_NEWSCALARARRAY(jshortArray, new_shortArray, Short)
3534 DEFINE_NEWSCALARARRAY(jcharArray, new_charArray, Char)
3535 DEFINE_NEWSCALARARRAY(jintArray, new_intArray, Int)
3536 DEFINE_NEWSCALARARRAY(jlongArray, new_longArray, Long)
3537 DEFINE_NEWSCALARARRAY(jfloatArray, new_singleArray, Float)
3538 DEFINE_NEWSCALARARRAY(jdoubleArray, new_doubleArray, Double)
3539
3540 #else /* USDT2 */
3541
3542 #define DEFINE_NEWSCALARARRAY(Return,Allocator,Result \
3543 ,EntryProbe,ReturnProbe) \
3544 \
3545 DT_RETURN_MARK_DECL(New##Result##Array, Return \
3546 , ReturnProbe); \
3547 \
3548 JNI_ENTRY(Return, \
3549 jni_New##Result##Array(JNIEnv *env, jsize len)) \
3550 JNIWrapper("New" XSTR(Result) "Array"); \
3551 EntryProbe; \
3552 Return ret = NULL;\
3553 DT_RETURN_MARK(New##Result##Array, Return, (const Return&)ret);\
3554 \
3555 oop obj= oopFactory::Allocator(len, CHECK_0); \
3556 ret = (Return) JNIHandles::make_local(env, obj); \
3557 return ret;\
3558 JNI_END
3559
3560 DEFINE_NEWSCALARARRAY(jbooleanArray, new_boolArray, Boolean,
3561 HOTSPOT_JNI_NEWBOOLEANARRAY_ENTRY(env, len),
3562 HOTSPOT_JNI_NEWBOOLEANARRAY_RETURN(_ret_ref))
3563 DEFINE_NEWSCALARARRAY(jbyteArray, new_byteArray, Byte,
3564 HOTSPOT_JNI_NEWBYTEARRAY_ENTRY(env, len),
3565 HOTSPOT_JNI_NEWBYTEARRAY_RETURN(_ret_ref))
3566 DEFINE_NEWSCALARARRAY(jshortArray, new_shortArray, Short,
3567 HOTSPOT_JNI_NEWSHORTARRAY_ENTRY(env, len),
3568 HOTSPOT_JNI_NEWSHORTARRAY_RETURN(_ret_ref))
3569 DEFINE_NEWSCALARARRAY(jcharArray, new_charArray, Char,
3570 HOTSPOT_JNI_NEWCHARARRAY_ENTRY(env, len),
3571 HOTSPOT_JNI_NEWCHARARRAY_RETURN(_ret_ref))
3572 DEFINE_NEWSCALARARRAY(jintArray, new_intArray, Int,
3573 HOTSPOT_JNI_NEWINTARRAY_ENTRY(env, len),
3574 HOTSPOT_JNI_NEWINTARRAY_RETURN(_ret_ref))
3575 DEFINE_NEWSCALARARRAY(jlongArray, new_longArray, Long,
3576 HOTSPOT_JNI_NEWLONGARRAY_ENTRY(env, len),
3577 HOTSPOT_JNI_NEWLONGARRAY_RETURN(_ret_ref))
3578 DEFINE_NEWSCALARARRAY(jfloatArray, new_singleArray, Float,
3579 HOTSPOT_JNI_NEWFLOATARRAY_ENTRY(env, len),
3580 HOTSPOT_JNI_NEWFLOATARRAY_RETURN(_ret_ref))
3581 DEFINE_NEWSCALARARRAY(jdoubleArray, new_doubleArray, Double,
3582 HOTSPOT_JNI_NEWDOUBLEARRAY_ENTRY(env, len),
3583 HOTSPOT_JNI_NEWDOUBLEARRAY_RETURN(_ret_ref))
3584 #endif /* USDT2 */
3585
3586 // Return an address which will fault if the caller writes to it.
3587
3588 static char* get_bad_address() {
3589 static char* bad_address = NULL;
3590 if (bad_address == NULL) {
3591 size_t size = os::vm_allocation_granularity();
3592 bad_address = os::reserve_memory(size);
3593 if (bad_address != NULL) {
3594 os::protect_memory(bad_address, size, os::MEM_PROT_READ,
3595 /*is_committed*/false);
3596 }
3597 }
3598 return bad_address;
3599 }
3600
3601
3602 #ifndef USDT2
3603 #define DEFINE_GETSCALARARRAYELEMENTS(ElementTag,ElementType,Result, Tag) \
3604 \
3605 JNI_QUICK_ENTRY(ElementType*, \
3606 jni_Get##Result##ArrayElements(JNIEnv *env, ElementType##Array array, jboolean *isCopy)) \
3607 JNIWrapper("Get" XSTR(Result) "ArrayElements"); \
3608 DTRACE_PROBE3(hotspot_jni, Get##Result##ArrayElements__entry, env, array, isCopy);\
3609 /* allocate an chunk of memory in c land */ \
3610 typeArrayOop a = typeArrayOop(JNIHandles::resolve_non_null(array)); \
3611 ElementType* result; \
3612 int len = a->length(); \
3613 if (len == 0) { \
3614 /* Empty array: legal but useless, can't return NULL. \
3615 * Return a pointer to something useless. \
3616 * Avoid asserts in typeArrayOop. */ \
3617 result = (ElementType*)get_bad_address(); \
3618 } else { \
3619 result = NEW_C_HEAP_ARRAY(ElementType, len, mtInternal); \
3620 /* copy the array to the c chunk */ \
3621 memcpy(result, a->Tag##_at_addr(0), sizeof(ElementType)*len); \
3622 } \
3623 if (isCopy) *isCopy = JNI_TRUE; \
3624 DTRACE_PROBE1(hotspot_jni, Get##Result##ArrayElements__return, result);\
3625 return result; \
3626 JNI_END
3627
3628 DEFINE_GETSCALARARRAYELEMENTS(T_BOOLEAN, jboolean, Boolean, bool)
3629 DEFINE_GETSCALARARRAYELEMENTS(T_BYTE, jbyte, Byte, byte)
3630 DEFINE_GETSCALARARRAYELEMENTS(T_SHORT, jshort, Short, short)
3631 DEFINE_GETSCALARARRAYELEMENTS(T_CHAR, jchar, Char, char)
3632 DEFINE_GETSCALARARRAYELEMENTS(T_INT, jint, Int, int)
3633 DEFINE_GETSCALARARRAYELEMENTS(T_LONG, jlong, Long, long)
3634 DEFINE_GETSCALARARRAYELEMENTS(T_FLOAT, jfloat, Float, float)
3635 DEFINE_GETSCALARARRAYELEMENTS(T_DOUBLE, jdouble, Double, double)
3636
3637 #else /* USDT2 */
3638
3639 #define DEFINE_GETSCALARARRAYELEMENTS(ElementTag,ElementType,Result, Tag \
3640 , EntryProbe, ReturnProbe) \
3641 \
3642 JNI_QUICK_ENTRY(ElementType*, \
3643 jni_Get##Result##ArrayElements(JNIEnv *env, ElementType##Array array, jboolean *isCopy)) \
3644 JNIWrapper("Get" XSTR(Result) "ArrayElements"); \
3645 EntryProbe; \
3646 /* allocate an chunk of memory in c land */ \
3647 typeArrayOop a = typeArrayOop(JNIHandles::resolve_non_null(array)); \
3648 ElementType* result; \
3649 int len = a->length(); \
3650 if (len == 0) { \
3651 /* Empty array: legal but useless, can't return NULL. \
3652 * Return a pointer to something useless. \
3653 * Avoid asserts in typeArrayOop. */ \
3654 result = (ElementType*)get_bad_address(); \
3655 } else { \
3656 result = NEW_C_HEAP_ARRAY(ElementType, len, mtInternal); \
3657 /* copy the array to the c chunk */ \
3658 memcpy(result, a->Tag##_at_addr(0), sizeof(ElementType)*len); \
3659 } \
3660 if (isCopy) *isCopy = JNI_TRUE; \
3661 ReturnProbe; \
3662 return result; \
3663 JNI_END
3664
3665 DEFINE_GETSCALARARRAYELEMENTS(T_BOOLEAN, jboolean, Boolean, bool
3666 , HOTSPOT_JNI_GETBOOLEANARRAYELEMENTS_ENTRY(env, array, (uintptr_t *) isCopy),
3667 HOTSPOT_JNI_GETBOOLEANARRAYELEMENTS_RETURN((uintptr_t*)result))
3668 DEFINE_GETSCALARARRAYELEMENTS(T_BYTE, jbyte, Byte, byte
3669 , HOTSPOT_JNI_GETBYTEARRAYELEMENTS_ENTRY(env, array, (uintptr_t *) isCopy),
3670 HOTSPOT_JNI_GETBYTEARRAYELEMENTS_RETURN((char*)result))
3671 DEFINE_GETSCALARARRAYELEMENTS(T_SHORT, jshort, Short, short
3672 , HOTSPOT_JNI_GETSHORTARRAYELEMENTS_ENTRY(env, (uint16_t*) array, (uintptr_t *) isCopy),
3673 HOTSPOT_JNI_GETSHORTARRAYELEMENTS_RETURN((uint16_t*)result))
3674 DEFINE_GETSCALARARRAYELEMENTS(T_CHAR, jchar, Char, char
3675 , HOTSPOT_JNI_GETCHARARRAYELEMENTS_ENTRY(env, (uint16_t*) array, (uintptr_t *) isCopy),
3676 HOTSPOT_JNI_GETCHARARRAYELEMENTS_RETURN(result))
3677 DEFINE_GETSCALARARRAYELEMENTS(T_INT, jint, Int, int
3678 , HOTSPOT_JNI_GETINTARRAYELEMENTS_ENTRY(env, array, (uintptr_t *) isCopy),
3679 HOTSPOT_JNI_GETINTARRAYELEMENTS_RETURN((uint32_t*)result))
3680 DEFINE_GETSCALARARRAYELEMENTS(T_LONG, jlong, Long, long
3681 , HOTSPOT_JNI_GETLONGARRAYELEMENTS_ENTRY(env, array, (uintptr_t *) isCopy),
3682 HOTSPOT_JNI_GETLONGARRAYELEMENTS_RETURN(((uintptr_t*)result)))
3683 // Float and double probes don't return value because dtrace doesn't currently support it
3684 DEFINE_GETSCALARARRAYELEMENTS(T_FLOAT, jfloat, Float, float
3685 , HOTSPOT_JNI_GETFLOATARRAYELEMENTS_ENTRY(env, array, (uintptr_t *) isCopy),
3686 HOTSPOT_JNI_GETFLOATARRAYELEMENTS_RETURN(result))
3687 DEFINE_GETSCALARARRAYELEMENTS(T_DOUBLE, jdouble, Double, double
3688 , HOTSPOT_JNI_GETDOUBLEARRAYELEMENTS_ENTRY(env, array, (uintptr_t *) isCopy),
3689 HOTSPOT_JNI_GETDOUBLEARRAYELEMENTS_RETURN(result))
3690 #endif /* USDT2 */
3691
3692 #ifndef USDT2
3693 #define DEFINE_RELEASESCALARARRAYELEMENTS(ElementTag,ElementType,Result,Tag) \
3694 \
3695 JNI_QUICK_ENTRY(void, \
3696 jni_Release##Result##ArrayElements(JNIEnv *env, ElementType##Array array, \
3697 ElementType *buf, jint mode)) \
3698 JNIWrapper("Release" XSTR(Result) "ArrayElements"); \
3699 DTRACE_PROBE4(hotspot_jni, Release##Result##ArrayElements__entry, env, array, buf, mode);\
3700 typeArrayOop a = typeArrayOop(JNIHandles::resolve_non_null(array)); \
3701 int len = a->length(); \
3702 if (len != 0) { /* Empty array: nothing to free or copy. */ \
3703 if ((mode == 0) || (mode == JNI_COMMIT)) { \
3704 memcpy(a->Tag##_at_addr(0), buf, sizeof(ElementType)*len); \
3705 } \
3706 if ((mode == 0) || (mode == JNI_ABORT)) { \
3707 FreeHeap(buf); \
3708 } \
3709 } \
3710 DTRACE_PROBE(hotspot_jni, Release##Result##ArrayElements__return);\
3711 JNI_END
3712
3713 DEFINE_RELEASESCALARARRAYELEMENTS(T_BOOLEAN, jboolean, Boolean, bool)
3714 DEFINE_RELEASESCALARARRAYELEMENTS(T_BYTE, jbyte, Byte, byte)
3715 DEFINE_RELEASESCALARARRAYELEMENTS(T_SHORT, jshort, Short, short)
3716 DEFINE_RELEASESCALARARRAYELEMENTS(T_CHAR, jchar, Char, char)
3717 DEFINE_RELEASESCALARARRAYELEMENTS(T_INT, jint, Int, int)
3718 DEFINE_RELEASESCALARARRAYELEMENTS(T_LONG, jlong, Long, long)
3719 DEFINE_RELEASESCALARARRAYELEMENTS(T_FLOAT, jfloat, Float, float)
3720 DEFINE_RELEASESCALARARRAYELEMENTS(T_DOUBLE, jdouble, Double, double)
3721
3722 #else /* USDT2 */
3723
3724 #define DEFINE_RELEASESCALARARRAYELEMENTS(ElementTag,ElementType,Result,Tag \
3725 , EntryProbe, ReturnProbe);\
3726 \
3727 JNI_QUICK_ENTRY(void, \
3728 jni_Release##Result##ArrayElements(JNIEnv *env, ElementType##Array array, \
3729 ElementType *buf, jint mode)) \
3730 JNIWrapper("Release" XSTR(Result) "ArrayElements"); \
3731 EntryProbe; \
3732 typeArrayOop a = typeArrayOop(JNIHandles::resolve_non_null(array)); \
3733 int len = a->length(); \
3734 if (len != 0) { /* Empty array: nothing to free or copy. */ \
3735 if ((mode == 0) || (mode == JNI_COMMIT)) { \
3736 memcpy(a->Tag##_at_addr(0), buf, sizeof(ElementType)*len); \
3737 } \
3738 if ((mode == 0) || (mode == JNI_ABORT)) { \
3739 FreeHeap(buf); \
3740 } \
3741 } \
3742 ReturnProbe; \
3743 JNI_END
3744
3745 DEFINE_RELEASESCALARARRAYELEMENTS(T_BOOLEAN, jboolean, Boolean, bool
3746 , HOTSPOT_JNI_RELEASEBOOLEANARRAYELEMENTS_ENTRY(env, array, (uintptr_t *) buf, mode),
3747 HOTSPOT_JNI_RELEASEBOOLEANARRAYELEMENTS_RETURN())
3748 DEFINE_RELEASESCALARARRAYELEMENTS(T_BYTE, jbyte, Byte, byte
3749 , HOTSPOT_JNI_RELEASEBYTEARRAYELEMENTS_ENTRY(env, array, (char *) buf, mode),
3750 HOTSPOT_JNI_RELEASEBYTEARRAYELEMENTS_RETURN())
3751 DEFINE_RELEASESCALARARRAYELEMENTS(T_SHORT, jshort, Short, short
3752 , HOTSPOT_JNI_RELEASESHORTARRAYELEMENTS_ENTRY(env, array, (uint16_t *) buf, mode),
3753 HOTSPOT_JNI_RELEASESHORTARRAYELEMENTS_RETURN())
3754 DEFINE_RELEASESCALARARRAYELEMENTS(T_CHAR, jchar, Char, char
3755 , HOTSPOT_JNI_RELEASECHARARRAYELEMENTS_ENTRY(env, array, (uint16_t *) buf, mode),
3756 HOTSPOT_JNI_RELEASECHARARRAYELEMENTS_RETURN())
3757 DEFINE_RELEASESCALARARRAYELEMENTS(T_INT, jint, Int, int
3758 , HOTSPOT_JNI_RELEASEINTARRAYELEMENTS_ENTRY(env, array, (uint32_t *) buf, mode),
3759 HOTSPOT_JNI_RELEASEINTARRAYELEMENTS_RETURN())
3760 DEFINE_RELEASESCALARARRAYELEMENTS(T_LONG, jlong, Long, long
3761 , HOTSPOT_JNI_RELEASELONGARRAYELEMENTS_ENTRY(env, array, (uintptr_t *) buf, mode),
3762 HOTSPOT_JNI_RELEASELONGARRAYELEMENTS_RETURN())
3763 DEFINE_RELEASESCALARARRAYELEMENTS(T_FLOAT, jfloat, Float, float
3764 , HOTSPOT_JNI_RELEASEFLOATARRAYELEMENTS_ENTRY(env, array, (float *) buf, mode),
3765 HOTSPOT_JNI_RELEASEFLOATARRAYELEMENTS_RETURN())
3766 DEFINE_RELEASESCALARARRAYELEMENTS(T_DOUBLE, jdouble, Double, double
3767 , HOTSPOT_JNI_RELEASEDOUBLEARRAYELEMENTS_ENTRY(env, array, (double *) buf, mode),
3768 HOTSPOT_JNI_RELEASEDOUBLEARRAYELEMENTS_RETURN())
3769 #endif /* USDT2 */
3770
3771 #ifndef USDT2
3772 #define DEFINE_GETSCALARARRAYREGION(ElementTag,ElementType,Result, Tag) \
3773 DT_VOID_RETURN_MARK_DECL(Get##Result##ArrayRegion);\
3774 \
3775 JNI_ENTRY(void, \
3776 jni_Get##Result##ArrayRegion(JNIEnv *env, ElementType##Array array, jsize start, \
3777 jsize len, ElementType *buf)) \
3778 JNIWrapper("Get" XSTR(Result) "ArrayRegion"); \
3779 DTRACE_PROBE5(hotspot_jni, Get##Result##ArrayRegion__entry, env, array, start, len, buf);\
3780 DT_VOID_RETURN_MARK(Get##Result##ArrayRegion); \
3781 typeArrayOop src = typeArrayOop(JNIHandles::resolve_non_null(array)); \
3782 if (start < 0 || len < 0 || ((unsigned int)start + (unsigned int)len > (unsigned int)src->length())) { \
3783 THROW(vmSymbols::java_lang_ArrayIndexOutOfBoundsException()); \
3784 } else { \
3785 if (len > 0) { \
3786 int sc = typeArrayKlass::cast(src->klass())->log2_element_size(); \
3787 memcpy((u_char*) buf, \
3788 (u_char*) src->Tag##_at_addr(start), \
3789 len << sc); \
3790 } \
3791 } \
3792 JNI_END
3793
3794 DEFINE_GETSCALARARRAYREGION(T_BOOLEAN, jboolean,Boolean, bool)
3795 DEFINE_GETSCALARARRAYREGION(T_BYTE, jbyte, Byte, byte)
3796 DEFINE_GETSCALARARRAYREGION(T_SHORT, jshort, Short, short)
3797 DEFINE_GETSCALARARRAYREGION(T_CHAR, jchar, Char, char)
3798 DEFINE_GETSCALARARRAYREGION(T_INT, jint, Int, int)
3799 DEFINE_GETSCALARARRAYREGION(T_LONG, jlong, Long, long)
3800 DEFINE_GETSCALARARRAYREGION(T_FLOAT, jfloat, Float, float)
3801 DEFINE_GETSCALARARRAYREGION(T_DOUBLE, jdouble, Double, double)
3802
3803 #else /* USDT2 */
3804
3805 #define DEFINE_GETSCALARARRAYREGION(ElementTag,ElementType,Result, Tag \
3806 , EntryProbe, ReturnProbe); \
3807 DT_VOID_RETURN_MARK_DECL(Get##Result##ArrayRegion \
3808 , ReturnProbe); \
3809 \
3810 JNI_ENTRY(void, \
3811 jni_Get##Result##ArrayRegion(JNIEnv *env, ElementType##Array array, jsize start, \
3812 jsize len, ElementType *buf)) \
3813 JNIWrapper("Get" XSTR(Result) "ArrayRegion"); \
3814 EntryProbe; \
3815 DT_VOID_RETURN_MARK(Get##Result##ArrayRegion); \
3816 typeArrayOop src = typeArrayOop(JNIHandles::resolve_non_null(array)); \
3817 if (start < 0 || len < 0 || ((unsigned int)start + (unsigned int)len > (unsigned int)src->length())) { \
3818 THROW(vmSymbols::java_lang_ArrayIndexOutOfBoundsException()); \
3819 } else { \
3820 if (len > 0) { \
3821 int sc = typeArrayKlass::cast(src->klass())->log2_element_size(); \
3822 memcpy((u_char*) buf, \
3823 (u_char*) src->Tag##_at_addr(start), \
3824 len << sc); \
3825 } \
3826 } \
3827 JNI_END
3828
3829 DEFINE_GETSCALARARRAYREGION(T_BOOLEAN, jboolean,Boolean, bool
3830 , HOTSPOT_JNI_GETBOOLEANARRAYREGION_ENTRY(env, array, start, len, (uintptr_t *) buf),
3831 HOTSPOT_JNI_GETBOOLEANARRAYREGION_RETURN());
3832 DEFINE_GETSCALARARRAYREGION(T_BYTE, jbyte, Byte, byte
3833 , HOTSPOT_JNI_GETBYTEARRAYREGION_ENTRY(env, array, start, len, (char *) buf),
3834 HOTSPOT_JNI_GETBYTEARRAYREGION_RETURN());
3835 DEFINE_GETSCALARARRAYREGION(T_SHORT, jshort, Short, short
3836 , HOTSPOT_JNI_GETSHORTARRAYREGION_ENTRY(env, array, start, len, (uint16_t *) buf),
3837 HOTSPOT_JNI_GETSHORTARRAYREGION_RETURN());
3838 DEFINE_GETSCALARARRAYREGION(T_CHAR, jchar, Char, char
3839 , HOTSPOT_JNI_GETCHARARRAYREGION_ENTRY(env, array, start, len, (uint16_t*) buf),
3840 HOTSPOT_JNI_GETCHARARRAYREGION_RETURN());
3841 DEFINE_GETSCALARARRAYREGION(T_INT, jint, Int, int
3842 , HOTSPOT_JNI_GETINTARRAYREGION_ENTRY(env, array, start, len, (uint32_t*) buf),
3843 HOTSPOT_JNI_GETINTARRAYREGION_RETURN());
3844 DEFINE_GETSCALARARRAYREGION(T_LONG, jlong, Long, long
3845 , HOTSPOT_JNI_GETLONGARRAYREGION_ENTRY(env, array, start, len, (uintptr_t *) buf),
3846 HOTSPOT_JNI_GETLONGARRAYREGION_RETURN());
3847 DEFINE_GETSCALARARRAYREGION(T_FLOAT, jfloat, Float, float
3848 , HOTSPOT_JNI_GETFLOATARRAYREGION_ENTRY(env, array, start, len, (float *) buf),
3849 HOTSPOT_JNI_GETFLOATARRAYREGION_RETURN());
3850 DEFINE_GETSCALARARRAYREGION(T_DOUBLE, jdouble, Double, double
3851 , HOTSPOT_JNI_GETDOUBLEARRAYREGION_ENTRY(env, array, start, len, (double *) buf),
3852 HOTSPOT_JNI_GETDOUBLEARRAYREGION_RETURN());
3853 #endif /* USDT2 */
3854
3855 #ifndef USDT2
3856 #define DEFINE_SETSCALARARRAYREGION(ElementTag,ElementType,Result, Tag) \
3857 DT_VOID_RETURN_MARK_DECL(Set##Result##ArrayRegion);\
3858 \
3859 JNI_ENTRY(void, \
3860 jni_Set##Result##ArrayRegion(JNIEnv *env, ElementType##Array array, jsize start, \
3861 jsize len, const ElementType *buf)) \
3862 JNIWrapper("Set" XSTR(Result) "ArrayRegion"); \
3863 DTRACE_PROBE5(hotspot_jni, Set##Result##ArrayRegion__entry, env, array, start, len, buf);\
3864 DT_VOID_RETURN_MARK(Set##Result##ArrayRegion); \
3865 typeArrayOop dst = typeArrayOop(JNIHandles::resolve_non_null(array)); \
3866 if (start < 0 || len < 0 || ((unsigned int)start + (unsigned int)len > (unsigned int)dst->length())) { \
3867 THROW(vmSymbols::java_lang_ArrayIndexOutOfBoundsException()); \
3868 } else { \
3869 if (len > 0) { \
3870 int sc = typeArrayKlass::cast(dst->klass())->log2_element_size(); \
3871 memcpy((u_char*) dst->Tag##_at_addr(start), \
3872 (u_char*) buf, \
3873 len << sc); \
3874 } \
3875 } \
3876 JNI_END
3877
3878 DEFINE_SETSCALARARRAYREGION(T_BOOLEAN, jboolean, Boolean, bool)
3879 DEFINE_SETSCALARARRAYREGION(T_BYTE, jbyte, Byte, byte)
3880 DEFINE_SETSCALARARRAYREGION(T_SHORT, jshort, Short, short)
3881 DEFINE_SETSCALARARRAYREGION(T_CHAR, jchar, Char, char)
3882 DEFINE_SETSCALARARRAYREGION(T_INT, jint, Int, int)
3883 DEFINE_SETSCALARARRAYREGION(T_LONG, jlong, Long, long)
3884 DEFINE_SETSCALARARRAYREGION(T_FLOAT, jfloat, Float, float)
3885 DEFINE_SETSCALARARRAYREGION(T_DOUBLE, jdouble, Double, double)
3886
3887 #else /* USDT2 */
3888
3889 #define DEFINE_SETSCALARARRAYREGION(ElementTag,ElementType,Result, Tag \
3890 , EntryProbe, ReturnProbe); \
3891 DT_VOID_RETURN_MARK_DECL(Set##Result##ArrayRegion \
3892 ,ReturnProbe); \
3893 \
3894 JNI_ENTRY(void, \
3895 jni_Set##Result##ArrayRegion(JNIEnv *env, ElementType##Array array, jsize start, \
3896 jsize len, const ElementType *buf)) \
3897 JNIWrapper("Set" XSTR(Result) "ArrayRegion"); \
3898 EntryProbe; \
3899 DT_VOID_RETURN_MARK(Set##Result##ArrayRegion); \
3900 typeArrayOop dst = typeArrayOop(JNIHandles::resolve_non_null(array)); \
3901 if (start < 0 || len < 0 || ((unsigned int)start + (unsigned int)len > (unsigned int)dst->length())) { \
3902 THROW(vmSymbols::java_lang_ArrayIndexOutOfBoundsException()); \
3903 } else { \
3904 if (len > 0) { \
3905 int sc = typeArrayKlass::cast(dst->klass())->log2_element_size(); \
3906 memcpy((u_char*) dst->Tag##_at_addr(start), \
3907 (u_char*) buf, \
3908 len << sc); \
3909 } \
3910 } \
3911 JNI_END
3912
3913 DEFINE_SETSCALARARRAYREGION(T_BOOLEAN, jboolean, Boolean, bool
3914 , HOTSPOT_JNI_SETBOOLEANARRAYREGION_ENTRY(env, array, start, len, (uintptr_t *)buf),
3915 HOTSPOT_JNI_SETBOOLEANARRAYREGION_RETURN())
3916 DEFINE_SETSCALARARRAYREGION(T_BYTE, jbyte, Byte, byte
3917 , HOTSPOT_JNI_SETBYTEARRAYREGION_ENTRY(env, array, start, len, (char *) buf),
3918 HOTSPOT_JNI_SETBYTEARRAYREGION_RETURN())
3919 DEFINE_SETSCALARARRAYREGION(T_SHORT, jshort, Short, short
3920 , HOTSPOT_JNI_SETSHORTARRAYREGION_ENTRY(env, array, start, len, (uint16_t *) buf),
3921 HOTSPOT_JNI_SETSHORTARRAYREGION_RETURN())
3922 DEFINE_SETSCALARARRAYREGION(T_CHAR, jchar, Char, char
3923 , HOTSPOT_JNI_SETCHARARRAYREGION_ENTRY(env, array, start, len, (uint16_t *) buf),
3924 HOTSPOT_JNI_SETCHARARRAYREGION_RETURN())
3925 DEFINE_SETSCALARARRAYREGION(T_INT, jint, Int, int
3926 , HOTSPOT_JNI_SETINTARRAYREGION_ENTRY(env, array, start, len, (uint32_t *) buf),
3927 HOTSPOT_JNI_SETINTARRAYREGION_RETURN())
3928 DEFINE_SETSCALARARRAYREGION(T_LONG, jlong, Long, long
3929 , HOTSPOT_JNI_SETLONGARRAYREGION_ENTRY(env, array, start, len, (uintptr_t *) buf),
3930 HOTSPOT_JNI_SETLONGARRAYREGION_RETURN())
3931 DEFINE_SETSCALARARRAYREGION(T_FLOAT, jfloat, Float, float
3932 , HOTSPOT_JNI_SETFLOATARRAYREGION_ENTRY(env, array, start, len, (float *) buf),
3933 HOTSPOT_JNI_SETFLOATARRAYREGION_RETURN())
3934 DEFINE_SETSCALARARRAYREGION(T_DOUBLE, jdouble, Double, double
3935 , HOTSPOT_JNI_SETDOUBLEARRAYREGION_ENTRY(env, array, start, len, (double *) buf),
3936 HOTSPOT_JNI_SETDOUBLEARRAYREGION_RETURN())
3937 #endif /* USDT2 */
3938
3939
3940 //
3941 // Interception of natives
3942 //
3943
3944 // The RegisterNatives call being attempted tried to register with a method that
3945 // is not native. Ask JVM TI what prefixes have been specified. Then check
3946 // to see if the native method is now wrapped with the prefixes. See the
3947 // SetNativeMethodPrefix(es) functions in the JVM TI Spec for details.
3948 static methodOop find_prefixed_native(KlassHandle k,
3949 Symbol* name, Symbol* signature, TRAPS) {
3950 ResourceMark rm(THREAD);
3951 methodOop method;
3952 int name_len = name->utf8_length();
3953 char* name_str = name->as_utf8();
3954 int prefix_count;
3955 char** prefixes = JvmtiExport::get_all_native_method_prefixes(&prefix_count);
3956 for (int i = 0; i < prefix_count; i++) {
3957 char* prefix = prefixes[i];
3958 int prefix_len = (int)strlen(prefix);
3959
3960 // try adding this prefix to the method name and see if it matches another method name
3961 int trial_len = name_len + prefix_len;
3962 char* trial_name_str = NEW_RESOURCE_ARRAY(char, trial_len + 1);
3963 strcpy(trial_name_str, prefix);
3964 strcat(trial_name_str, name_str);
3965 TempNewSymbol trial_name = SymbolTable::probe(trial_name_str, trial_len);
3966 if (trial_name == NULL) {
3967 continue; // no such symbol, so this prefix wasn't used, try the next prefix
3968 }
3969 method = Klass::cast(k())->lookup_method(trial_name, signature);
3970 if (method == NULL) {
3971 continue; // signature doesn't match, try the next prefix
3972 }
3973 if (method->is_native()) {
3974 method->set_is_prefixed_native();
3975 return method; // wahoo, we found a prefixed version of the method, return it
3976 }
3977 // found as non-native, so prefix is good, add it, probably just need more prefixes
3978 name_len = trial_len;
3979 name_str = trial_name_str;
3980 }
3981 return NULL; // not found
3982 }
3983
3984 static bool register_native(KlassHandle k, Symbol* name, Symbol* signature, address entry, TRAPS) {
3985 methodOop method = Klass::cast(k())->lookup_method(name, signature);
3986 if (method == NULL) {
3987 ResourceMark rm;
3988 stringStream st;
3989 st.print("Method %s name or signature does not match",
3990 methodOopDesc::name_and_sig_as_C_string(Klass::cast(k()), name, signature));
3991 THROW_MSG_(vmSymbols::java_lang_NoSuchMethodError(), st.as_string(), false);
3992 }
3993 if (!method->is_native()) {
3994 // trying to register to a non-native method, see if a JVM TI agent has added prefix(es)
3995 method = find_prefixed_native(k, name, signature, THREAD);
3996 if (method == NULL) {
3997 ResourceMark rm;
3998 stringStream st;
3999 st.print("Method %s is not declared as native",
4000 methodOopDesc::name_and_sig_as_C_string(Klass::cast(k()), name, signature));
4001 THROW_MSG_(vmSymbols::java_lang_NoSuchMethodError(), st.as_string(), false);
4002 }
4003 }
4004
4005 if (entry != NULL) {
4006 method->set_native_function(entry,
4007 methodOopDesc::native_bind_event_is_interesting);
4008 } else {
4009 method->clear_native_function();
4010 }
4011 if (PrintJNIResolving) {
4012 ResourceMark rm(THREAD);
4013 tty->print_cr("[Registering JNI native method %s.%s]",
4014 Klass::cast(method->method_holder())->external_name(),
4015 method->name()->as_C_string());
4016 }
4017 return true;
4018 }
4019
4020 #ifndef USDT2
4021 DT_RETURN_MARK_DECL(RegisterNatives, jint);
4022 #else /* USDT2 */
4023 DT_RETURN_MARK_DECL(RegisterNatives, jint
4024 , HOTSPOT_JNI_REGISTERNATIVES_RETURN(_ret_ref));
4025 #endif /* USDT2 */
4026
4027 JNI_ENTRY(jint, jni_RegisterNatives(JNIEnv *env, jclass clazz,
4028 const JNINativeMethod *methods,
4029 jint nMethods))
4030 JNIWrapper("RegisterNatives");
4031 #ifndef USDT2
4032 DTRACE_PROBE4(hotspot_jni, RegisterNatives__entry, env, clazz, methods, nMethods);
4033 #else /* USDT2 */
4034 HOTSPOT_JNI_REGISTERNATIVES_ENTRY(
4035 env, clazz, (void *) methods, nMethods);
4036 #endif /* USDT2 */
4037 jint ret = 0;
4038 DT_RETURN_MARK(RegisterNatives, jint, (const jint&)ret);
4039
4040 KlassHandle h_k(thread, java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(clazz)));
4041
4042 for (int index = 0; index < nMethods; index++) {
4043 const char* meth_name = methods[index].name;
4044 const char* meth_sig = methods[index].signature;
4045 int meth_name_len = (int)strlen(meth_name);
4046
4047 // The class should have been loaded (we have an instance of the class
4048 // passed in) so the method and signature should already be in the symbol
4049 // table. If they're not there, the method doesn't exist.
4050 TempNewSymbol name = SymbolTable::probe(meth_name, meth_name_len);
4051 TempNewSymbol signature = SymbolTable::probe(meth_sig, (int)strlen(meth_sig));
4052
4053 if (name == NULL || signature == NULL) {
4054 ResourceMark rm;
4055 stringStream st;
4056 st.print("Method %s.%s%s not found", Klass::cast(h_k())->external_name(), meth_name, meth_sig);
4057 // Must return negative value on failure
4058 THROW_MSG_(vmSymbols::java_lang_NoSuchMethodError(), st.as_string(), -1);
4059 }
4060
4061 bool res = register_native(h_k, name, signature,
4062 (address) methods[index].fnPtr, THREAD);
4063 if (!res) {
4064 ret = -1;
4065 break;
4066 }
4067 }
4068 return ret;
4069 JNI_END
4070
4071
4072 JNI_ENTRY(jint, jni_UnregisterNatives(JNIEnv *env, jclass clazz))
4073 JNIWrapper("UnregisterNatives");
4074 #ifndef USDT2
4075 DTRACE_PROBE2(hotspot_jni, UnregisterNatives__entry, env, clazz);
4076 #else /* USDT2 */
4077 HOTSPOT_JNI_UNREGISTERNATIVES_ENTRY(
4078 env, clazz);
4079 #endif /* USDT2 */
4080 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(clazz));
4081 //%note jni_2
4082 if (Klass::cast(k)->oop_is_instance()) {
4083 for (int index = 0; index < instanceKlass::cast(k)->methods()->length(); index++) {
4084 methodOop m = methodOop(instanceKlass::cast(k)->methods()->obj_at(index));
4085 if (m->is_native()) {
4086 m->clear_native_function();
4087 m->set_signature_handler(NULL);
4088 }
4089 }
4090 }
4091 #ifndef USDT2
4092 DTRACE_PROBE1(hotspot_jni, UnregisterNatives__return, 0);
4093 #else /* USDT2 */
4094 HOTSPOT_JNI_UNREGISTERNATIVES_RETURN(
4095 0);
4096 #endif /* USDT2 */
4097 return 0;
4098 JNI_END
4099
4100 //
4101 // Monitor functions
4102 //
4103
4104 #ifndef USDT2
4105 DT_RETURN_MARK_DECL(MonitorEnter, jint);
4106 #else /* USDT2 */
4107 DT_RETURN_MARK_DECL(MonitorEnter, jint
4108 , HOTSPOT_JNI_MONITORENTER_RETURN(_ret_ref));
4109 #endif /* USDT2 */
4110
4111 JNI_ENTRY(jint, jni_MonitorEnter(JNIEnv *env, jobject jobj))
4112 #ifndef USDT2
4113 DTRACE_PROBE2(hotspot_jni, MonitorEnter__entry, env, jobj);
4114 #else /* USDT2 */
4115 HOTSPOT_JNI_MONITORENTER_ENTRY(
4116 env, jobj);
4117 #endif /* USDT2 */
4118 jint ret = JNI_ERR;
4119 DT_RETURN_MARK(MonitorEnter, jint, (const jint&)ret);
4120
4121 // If the object is null, we can't do anything with it
4122 if (jobj == NULL) {
4123 THROW_(vmSymbols::java_lang_NullPointerException(), JNI_ERR);
4124 }
4125
4126 Handle obj(thread, JNIHandles::resolve_non_null(jobj));
4127 ObjectSynchronizer::jni_enter(obj, CHECK_(JNI_ERR));
4128 ret = JNI_OK;
4129 return ret;
4130 JNI_END
4131
4132 #ifndef USDT2
4133 DT_RETURN_MARK_DECL(MonitorExit, jint);
4134 #else /* USDT2 */
4135 DT_RETURN_MARK_DECL(MonitorExit, jint
4136 , HOTSPOT_JNI_MONITOREXIT_RETURN(_ret_ref));
4137 #endif /* USDT2 */
4138
4139 JNI_ENTRY(jint, jni_MonitorExit(JNIEnv *env, jobject jobj))
4140 #ifndef USDT2
4141 DTRACE_PROBE2(hotspot_jni, MonitorExit__entry, env, jobj);
4142 #else /* USDT2 */
4143 HOTSPOT_JNI_MONITOREXIT_ENTRY(
4144 env, jobj);
4145 #endif /* USDT2 */
4146 jint ret = JNI_ERR;
4147 DT_RETURN_MARK(MonitorExit, jint, (const jint&)ret);
4148
4149 // Don't do anything with a null object
4150 if (jobj == NULL) {
4151 THROW_(vmSymbols::java_lang_NullPointerException(), JNI_ERR);
4152 }
4153
4154 Handle obj(THREAD, JNIHandles::resolve_non_null(jobj));
4155 ObjectSynchronizer::jni_exit(obj(), CHECK_(JNI_ERR));
4156
4157 ret = JNI_OK;
4158 return ret;
4159 JNI_END
4160
4161 //
4162 // Extensions
4163 //
4164
4165 #ifndef USDT2
4166 DT_VOID_RETURN_MARK_DECL(GetStringRegion);
4167 #else /* USDT2 */
4168 DT_VOID_RETURN_MARK_DECL(GetStringRegion
4169 , HOTSPOT_JNI_GETSTRINGREGION_RETURN());
4170 #endif /* USDT2 */
4171
4172 JNI_ENTRY(void, jni_GetStringRegion(JNIEnv *env, jstring string, jsize start, jsize len, jchar *buf))
4173 JNIWrapper("GetStringRegion");
4174 #ifndef USDT2
4175 DTRACE_PROBE5(hotspot_jni, GetStringRegion__entry, env, string, start, len, buf);
4176 #else /* USDT2 */
4177 HOTSPOT_JNI_GETSTRINGREGION_ENTRY(
4178 env, string, start, len, buf);
4179 #endif /* USDT2 */
4180 DT_VOID_RETURN_MARK(GetStringRegion);
4181 oop s = JNIHandles::resolve_non_null(string);
4182 int s_len = java_lang_String::length(s);
4183 if (start < 0 || len < 0 || start + len > s_len) {
4184 THROW(vmSymbols::java_lang_StringIndexOutOfBoundsException());
4185 } else {
4186 if (len > 0) {
4187 int s_offset = java_lang_String::offset(s);
4188 typeArrayOop s_value = java_lang_String::value(s);
4189 memcpy(buf, s_value->char_at_addr(s_offset+start), sizeof(jchar)*len);
4190 }
4191 }
4192 JNI_END
4193
4194 #ifndef USDT2
4195 DT_VOID_RETURN_MARK_DECL(GetStringUTFRegion);
4196 #else /* USDT2 */
4197 DT_VOID_RETURN_MARK_DECL(GetStringUTFRegion
4198 , HOTSPOT_JNI_GETSTRINGUTFREGION_RETURN());
4199 #endif /* USDT2 */
4200
4201 JNI_ENTRY(void, jni_GetStringUTFRegion(JNIEnv *env, jstring string, jsize start, jsize len, char *buf))
4202 JNIWrapper("GetStringUTFRegion");
4203 #ifndef USDT2
4204 DTRACE_PROBE5(hotspot_jni, GetStringUTFRegion__entry, env, string, start, len, buf);
4205 #else /* USDT2 */
4206 HOTSPOT_JNI_GETSTRINGUTFREGION_ENTRY(
4207 env, string, start, len, buf);
4208 #endif /* USDT2 */
4209 DT_VOID_RETURN_MARK(GetStringUTFRegion);
4210 oop s = JNIHandles::resolve_non_null(string);
4211 int s_len = java_lang_String::length(s);
4212 if (start < 0 || len < 0 || start + len > s_len) {
4213 THROW(vmSymbols::java_lang_StringIndexOutOfBoundsException());
4214 } else {
4215 //%note jni_7
4216 if (len > 0) {
4217 ResourceMark rm(THREAD);
4218 char *utf_region = java_lang_String::as_utf8_string(s, start, len);
4219 int utf_len = (int)strlen(utf_region);
4220 memcpy(buf, utf_region, utf_len);
4221 buf[utf_len] = 0;
4222 } else {
4223 // JDK null-terminates the buffer even in len is zero
4224 if (buf != NULL) {
4225 buf[0] = 0;
4226 }
4227 }
4228 }
4229 JNI_END
4230
4231
4232 JNI_ENTRY(void*, jni_GetPrimitiveArrayCritical(JNIEnv *env, jarray array, jboolean *isCopy))
4233 JNIWrapper("GetPrimitiveArrayCritical");
4234 #ifndef USDT2
4235 DTRACE_PROBE3(hotspot_jni, GetPrimitiveArrayCritical__entry, env, array, isCopy);
4236 #else /* USDT2 */
4237 HOTSPOT_JNI_GETPRIMITIVEARRAYCRITICAL_ENTRY(
4238 env, array, (uintptr_t *) isCopy);
4239 #endif /* USDT2 */
4240 GC_locker::lock_critical(thread);
4241 if (isCopy != NULL) {
4242 *isCopy = JNI_FALSE;
4243 }
4244 oop a = JNIHandles::resolve_non_null(array);
4245 assert(a->is_array(), "just checking");
4246 BasicType type;
4247 if (a->is_objArray()) {
4248 type = T_OBJECT;
4249 } else {
4250 type = typeArrayKlass::cast(a->klass())->element_type();
4251 }
4252 void* ret = arrayOop(a)->base(type);
4253 #ifndef USDT2
4254 DTRACE_PROBE1(hotspot_jni, GetPrimitiveArrayCritical__return, ret);
4255 #else /* USDT2 */
4256 HOTSPOT_JNI_GETPRIMITIVEARRAYCRITICAL_RETURN(
4257 ret);
4258 #endif /* USDT2 */
4259 return ret;
4260 JNI_END
4261
4262
4263 JNI_ENTRY(void, jni_ReleasePrimitiveArrayCritical(JNIEnv *env, jarray array, void *carray, jint mode))
4264 JNIWrapper("ReleasePrimitiveArrayCritical");
4265 #ifndef USDT2
4266 DTRACE_PROBE4(hotspot_jni, ReleasePrimitiveArrayCritical__entry, env, array, carray, mode);
4267 #else /* USDT2 */
4268 HOTSPOT_JNI_RELEASEPRIMITIVEARRAYCRITICAL_ENTRY(
4269 env, array, carray, mode);
4270 #endif /* USDT2 */
4271 // The array, carray and mode arguments are ignored
4272 GC_locker::unlock_critical(thread);
4273 #ifndef USDT2
4274 DTRACE_PROBE(hotspot_jni, ReleasePrimitiveArrayCritical__return);
4275 #else /* USDT2 */
4276 HOTSPOT_JNI_RELEASEPRIMITIVEARRAYCRITICAL_RETURN(
4277 );
4278 #endif /* USDT2 */
4279 JNI_END
4280
4281
4282 JNI_ENTRY(const jchar*, jni_GetStringCritical(JNIEnv *env, jstring string, jboolean *isCopy))
4283 JNIWrapper("GetStringCritical");
4284 #ifndef USDT2
4285 DTRACE_PROBE3(hotspot_jni, GetStringCritical__entry, env, string, isCopy);
4286 #else /* USDT2 */
4287 HOTSPOT_JNI_GETSTRINGCRITICAL_ENTRY(
4288 env, string, (uintptr_t *) isCopy);
4289 #endif /* USDT2 */
4290 GC_locker::lock_critical(thread);
4291 if (isCopy != NULL) {
4292 *isCopy = JNI_FALSE;
4293 }
4294 oop s = JNIHandles::resolve_non_null(string);
4295 int s_len = java_lang_String::length(s);
4296 typeArrayOop s_value = java_lang_String::value(s);
4297 int s_offset = java_lang_String::offset(s);
4298 const jchar* ret;
4299 if (s_len > 0) {
4300 ret = s_value->char_at_addr(s_offset);
4301 } else {
4302 ret = (jchar*) s_value->base(T_CHAR);
4303 }
4304 #ifndef USDT2
4305 DTRACE_PROBE1(hotspot_jni, GetStringCritical__return, ret);
4306 #else /* USDT2 */
4307 HOTSPOT_JNI_GETSTRINGCRITICAL_RETURN(
4308 (uint16_t *) ret);
4309 #endif /* USDT2 */
4310 return ret;
4311 JNI_END
4312
4313
4314 JNI_ENTRY(void, jni_ReleaseStringCritical(JNIEnv *env, jstring str, const jchar *chars))
4315 JNIWrapper("ReleaseStringCritical");
4316 #ifndef USDT2
4317 DTRACE_PROBE3(hotspot_jni, ReleaseStringCritical__entry, env, str, chars);
4318 #else /* USDT2 */
4319 HOTSPOT_JNI_RELEASESTRINGCRITICAL_ENTRY(
4320 env, str, (uint16_t *) chars);
4321 #endif /* USDT2 */
4322 // The str and chars arguments are ignored
4323 GC_locker::unlock_critical(thread);
4324 #ifndef USDT2
4325 DTRACE_PROBE(hotspot_jni, ReleaseStringCritical__return);
4326 #else /* USDT2 */
4327 HOTSPOT_JNI_RELEASESTRINGCRITICAL_RETURN(
4328 );
4329 #endif /* USDT2 */
4330 JNI_END
4331
4332
4333 JNI_ENTRY(jweak, jni_NewWeakGlobalRef(JNIEnv *env, jobject ref))
4334 JNIWrapper("jni_NewWeakGlobalRef");
4335 #ifndef USDT2
4336 DTRACE_PROBE2(hotspot_jni, NewWeakGlobalRef__entry, env, ref);
4337 #else /* USDT2 */
4338 HOTSPOT_JNI_NEWWEAKGLOBALREF_ENTRY(
4339 env, ref);
4340 #endif /* USDT2 */
4341 Handle ref_handle(thread, JNIHandles::resolve(ref));
4342 jweak ret = JNIHandles::make_weak_global(ref_handle);
4343 #ifndef USDT2
4344 DTRACE_PROBE1(hotspot_jni, NewWeakGlobalRef__return, ret);
4345 #else /* USDT2 */
4346 HOTSPOT_JNI_NEWWEAKGLOBALREF_RETURN(
4347 ret);
4348 #endif /* USDT2 */
4349 return ret;
4350 JNI_END
4351
4352 // Must be JNI_ENTRY (with HandleMark)
4353 JNI_ENTRY(void, jni_DeleteWeakGlobalRef(JNIEnv *env, jweak ref))
4354 JNIWrapper("jni_DeleteWeakGlobalRef");
4355 #ifndef USDT2
4356 DTRACE_PROBE2(hotspot_jni, DeleteWeakGlobalRef__entry, env, ref);
4357 #else /* USDT2 */
4358 HOTSPOT_JNI_DELETEWEAKGLOBALREF_ENTRY(
4359 env, ref);
4360 #endif /* USDT2 */
4361 JNIHandles::destroy_weak_global(ref);
4362 #ifndef USDT2
4363 DTRACE_PROBE(hotspot_jni, DeleteWeakGlobalRef__return);
4364 #else /* USDT2 */
4365 HOTSPOT_JNI_DELETEWEAKGLOBALREF_RETURN(
4366 );
4367 #endif /* USDT2 */
4368 JNI_END
4369
4370
4371 JNI_QUICK_ENTRY(jboolean, jni_ExceptionCheck(JNIEnv *env))
4372 JNIWrapper("jni_ExceptionCheck");
4373 #ifndef USDT2
4374 DTRACE_PROBE1(hotspot_jni, ExceptionCheck__entry, env);
4375 #else /* USDT2 */
4376 HOTSPOT_JNI_EXCEPTIONCHECK_ENTRY(
4377 env);
4378 #endif /* USDT2 */
4379 jni_check_async_exceptions(thread);
4380 jboolean ret = (thread->has_pending_exception()) ? JNI_TRUE : JNI_FALSE;
4381 #ifndef USDT2
4382 DTRACE_PROBE1(hotspot_jni, ExceptionCheck__return, ret);
4383 #else /* USDT2 */
4384 HOTSPOT_JNI_EXCEPTIONCHECK_RETURN(
4385 ret);
4386 #endif /* USDT2 */
4387 return ret;
4388 JNI_END
4389
4390
4391 // Initialization state for three routines below relating to
4392 // java.nio.DirectBuffers
4393 static jint directBufferSupportInitializeStarted = 0;
4394 static volatile jint directBufferSupportInitializeEnded = 0;
4395 static volatile jint directBufferSupportInitializeFailed = 0;
4396 static jclass bufferClass = NULL;
4397 static jclass directBufferClass = NULL;
4398 static jclass directByteBufferClass = NULL;
4399 static jmethodID directByteBufferConstructor = NULL;
4400 static jfieldID directBufferAddressField = NULL;
4401 static jfieldID bufferCapacityField = NULL;
4402
4403 static jclass lookupOne(JNIEnv* env, const char* name, TRAPS) {
4404 Handle loader; // null (bootstrap) loader
4405 Handle protection_domain; // null protection domain
4406
4407 TempNewSymbol sym = SymbolTable::new_symbol(name, CHECK_NULL);
4408 jclass result = find_class_from_class_loader(env, sym, true, loader, protection_domain, true, CHECK_NULL);
4409
4410 if (TraceClassResolution && result != NULL) {
4411 trace_class_resolution(java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(result)));
4412 }
4413 return result;
4414 }
4415
4416 // These lookups are done with the NULL (bootstrap) ClassLoader to
4417 // circumvent any security checks that would be done by jni_FindClass.
4418 JNI_ENTRY(bool, lookupDirectBufferClasses(JNIEnv* env))
4419 {
4420 if ((bufferClass = lookupOne(env, "java/nio/Buffer", thread)) == NULL) { return false; }
4421 if ((directBufferClass = lookupOne(env, "sun/nio/ch/DirectBuffer", thread)) == NULL) { return false; }
4422 if ((directByteBufferClass = lookupOne(env, "java/nio/DirectByteBuffer", thread)) == NULL) { return false; }
4423 return true;
4424 }
4425 JNI_END
4426
4427
4428 static bool initializeDirectBufferSupport(JNIEnv* env, JavaThread* thread) {
4429 if (directBufferSupportInitializeFailed) {
4430 return false;
4431 }
4432
4433 if (Atomic::cmpxchg(1, &directBufferSupportInitializeStarted, 0) == 0) {
4434 if (!lookupDirectBufferClasses(env)) {
4435 directBufferSupportInitializeFailed = 1;
4436 return false;
4437 }
4438
4439 // Make global references for these
4440 bufferClass = (jclass) env->NewGlobalRef(bufferClass);
4441 directBufferClass = (jclass) env->NewGlobalRef(directBufferClass);
4442 directByteBufferClass = (jclass) env->NewGlobalRef(directByteBufferClass);
4443
4444 // Get needed field and method IDs
4445 directByteBufferConstructor = env->GetMethodID(directByteBufferClass, "<init>", "(JI)V");
4446 directBufferAddressField = env->GetFieldID(bufferClass, "address", "J");
4447 bufferCapacityField = env->GetFieldID(bufferClass, "capacity", "I");
4448
4449 if ((directByteBufferConstructor == NULL) ||
4450 (directBufferAddressField == NULL) ||
4451 (bufferCapacityField == NULL)) {
4452 directBufferSupportInitializeFailed = 1;
4453 return false;
4454 }
4455
4456 directBufferSupportInitializeEnded = 1;
4457 } else {
4458 while (!directBufferSupportInitializeEnded && !directBufferSupportInitializeFailed) {
4459 // Set state as yield_all can call os:sleep. On Solaris, yield_all calls
4460 // os::sleep which requires the VM state transition. On other platforms, it
4461 // is not necessary. The following call to change the VM state is purposely
4462 // put inside the loop to avoid potential deadlock when multiple threads
4463 // try to call this method. See 6791815 for more details.
4464 ThreadInVMfromNative tivn(thread);
4465 os::yield_all();
4466 }
4467 }
4468
4469 return !directBufferSupportInitializeFailed;
4470 }
4471
4472 extern "C" jobject JNICALL jni_NewDirectByteBuffer(JNIEnv *env, void* address, jlong capacity)
4473 {
4474 // thread_from_jni_environment() will block if VM is gone.
4475 JavaThread* thread = JavaThread::thread_from_jni_environment(env);
4476
4477 JNIWrapper("jni_NewDirectByteBuffer");
4478 #ifndef USDT2
4479 DTRACE_PROBE3(hotspot_jni, NewDirectByteBuffer__entry, env, address, capacity);
4480 #else /* USDT2 */
4481 HOTSPOT_JNI_NEWDIRECTBYTEBUFFER_ENTRY(
4482 env, address, capacity);
4483 #endif /* USDT2 */
4484
4485 if (!directBufferSupportInitializeEnded) {
4486 if (!initializeDirectBufferSupport(env, thread)) {
4487 #ifndef USDT2
4488 DTRACE_PROBE1(hotspot_jni, NewDirectByteBuffer__return, NULL);
4489 #else /* USDT2 */
4490 HOTSPOT_JNI_NEWDIRECTBYTEBUFFER_RETURN(
4491 NULL);
4492 #endif /* USDT2 */
4493 return NULL;
4494 }
4495 }
4496
4497 // Being paranoid about accidental sign extension on address
4498 jlong addr = (jlong) ((uintptr_t) address);
4499 // NOTE that package-private DirectByteBuffer constructor currently
4500 // takes int capacity
4501 jint cap = (jint) capacity;
4502 jobject ret = env->NewObject(directByteBufferClass, directByteBufferConstructor, addr, cap);
4503 #ifndef USDT2
4504 DTRACE_PROBE1(hotspot_jni, NewDirectByteBuffer__return, ret);
4505 #else /* USDT2 */
4506 HOTSPOT_JNI_NEWDIRECTBYTEBUFFER_RETURN(
4507 ret);
4508 #endif /* USDT2 */
4509 return ret;
4510 }
4511
4512 #ifndef USDT2
4513 DT_RETURN_MARK_DECL(GetDirectBufferAddress, void*);
4514 #else /* USDT2 */
4515 DT_RETURN_MARK_DECL(GetDirectBufferAddress, void*
4516 , HOTSPOT_JNI_GETDIRECTBUFFERADDRESS_RETURN((void*) _ret_ref));
4517 #endif /* USDT2 */
4518
4519 extern "C" void* JNICALL jni_GetDirectBufferAddress(JNIEnv *env, jobject buf)
4520 {
4521 // thread_from_jni_environment() will block if VM is gone.
4522 JavaThread* thread = JavaThread::thread_from_jni_environment(env);
4523
4524 JNIWrapper("jni_GetDirectBufferAddress");
4525 #ifndef USDT2
4526 DTRACE_PROBE2(hotspot_jni, GetDirectBufferAddress__entry, env, buf);
4527 #else /* USDT2 */
4528 HOTSPOT_JNI_GETDIRECTBUFFERADDRESS_ENTRY(
4529 env, buf);
4530 #endif /* USDT2 */
4531 void* ret = NULL;
4532 DT_RETURN_MARK(GetDirectBufferAddress, void*, (const void*&)ret);
4533
4534 if (!directBufferSupportInitializeEnded) {
4535 if (!initializeDirectBufferSupport(env, thread)) {
4536 return 0;
4537 }
4538 }
4539
4540 if ((buf != NULL) && (!env->IsInstanceOf(buf, directBufferClass))) {
4541 return 0;
4542 }
4543
4544 ret = (void*)(intptr_t)env->GetLongField(buf, directBufferAddressField);
4545 return ret;
4546 }
4547
4548 #ifndef USDT2
4549 DT_RETURN_MARK_DECL(GetDirectBufferCapacity, jlong);
4550 #else /* USDT2 */
4551 DT_RETURN_MARK_DECL(GetDirectBufferCapacity, jlong
4552 , HOTSPOT_JNI_GETDIRECTBUFFERCAPACITY_RETURN(_ret_ref));
4553 #endif /* USDT2 */
4554
4555 extern "C" jlong JNICALL jni_GetDirectBufferCapacity(JNIEnv *env, jobject buf)
4556 {
4557 // thread_from_jni_environment() will block if VM is gone.
4558 JavaThread* thread = JavaThread::thread_from_jni_environment(env);
4559
4560 JNIWrapper("jni_GetDirectBufferCapacity");
4561 #ifndef USDT2
4562 DTRACE_PROBE2(hotspot_jni, GetDirectBufferCapacity__entry, env, buf);
4563 #else /* USDT2 */
4564 HOTSPOT_JNI_GETDIRECTBUFFERCAPACITY_ENTRY(
4565 env, buf);
4566 #endif /* USDT2 */
4567 jlong ret = -1;
4568 DT_RETURN_MARK(GetDirectBufferCapacity, jlong, (const jlong&)ret);
4569
4570 if (!directBufferSupportInitializeEnded) {
4571 if (!initializeDirectBufferSupport(env, thread)) {
4572 ret = 0;
4573 return ret;
4574 }
4575 }
4576
4577 if (buf == NULL) {
4578 return -1;
4579 }
4580
4581 if (!env->IsInstanceOf(buf, directBufferClass)) {
4582 return -1;
4583 }
4584
4585 // NOTE that capacity is currently an int in the implementation
4586 ret = env->GetIntField(buf, bufferCapacityField);
4587 return ret;
4588 }
4589
4590
4591 JNI_LEAF(jint, jni_GetVersion(JNIEnv *env))
4592 JNIWrapper("GetVersion");
4593 #ifndef USDT2
4594 DTRACE_PROBE1(hotspot_jni, GetVersion__entry, env);
4595 #else /* USDT2 */
4596 HOTSPOT_JNI_GETVERSION_ENTRY(
4597 env);
4598 #endif /* USDT2 */
4599 #ifndef USDT2
4600 DTRACE_PROBE1(hotspot_jni, GetVersion__return, CurrentVersion);
4601 #else /* USDT2 */
4602 HOTSPOT_JNI_GETVERSION_RETURN(
4603 CurrentVersion);
4604 #endif /* USDT2 */
4605 return CurrentVersion;
4606 JNI_END
4607
4608 extern struct JavaVM_ main_vm;
4609
4610 JNI_LEAF(jint, jni_GetJavaVM(JNIEnv *env, JavaVM **vm))
4611 JNIWrapper("jni_GetJavaVM");
4612 #ifndef USDT2
4613 DTRACE_PROBE2(hotspot_jni, GetJavaVM__entry, env, vm);
4614 #else /* USDT2 */
4615 HOTSPOT_JNI_GETJAVAVM_ENTRY(
4616 env, (void **) vm);
4617 #endif /* USDT2 */
4618 *vm = (JavaVM *)(&main_vm);
4619 #ifndef USDT2
4620 DTRACE_PROBE1(hotspot_jni, GetJavaVM__return, JNI_OK);
4621 #else /* USDT2 */
4622 HOTSPOT_JNI_GETJAVAVM_RETURN(
4623 JNI_OK);
4624 #endif /* USDT2 */
4625 return JNI_OK;
4626 JNI_END
4627
4628 // Structure containing all jni functions
4629 struct JNINativeInterface_ jni_NativeInterface = {
4630 NULL,
4631 NULL,
4632 NULL,
4633
4634 NULL,
4635
4636 jni_GetVersion,
4637
4638 jni_DefineClass,
4639 jni_FindClass,
4640
4641 jni_FromReflectedMethod,
4642 jni_FromReflectedField,
4643
4644 jni_ToReflectedMethod,
4645
4646 jni_GetSuperclass,
4647 jni_IsAssignableFrom,
4648
4649 jni_ToReflectedField,
4650
4651 jni_Throw,
4652 jni_ThrowNew,
4653 jni_ExceptionOccurred,
4654 jni_ExceptionDescribe,
4655 jni_ExceptionClear,
4656 jni_FatalError,
4657
4658 jni_PushLocalFrame,
4659 jni_PopLocalFrame,
4660
4661 jni_NewGlobalRef,
4662 jni_DeleteGlobalRef,
4663 jni_DeleteLocalRef,
4664 jni_IsSameObject,
4665
4666 jni_NewLocalRef,
4667 jni_EnsureLocalCapacity,
4668
4669 jni_AllocObject,
4670 jni_NewObject,
4671 jni_NewObjectV,
4672 jni_NewObjectA,
4673
4674 jni_GetObjectClass,
4675 jni_IsInstanceOf,
4676
4677 jni_GetMethodID,
4678
4679 jni_CallObjectMethod,
4680 jni_CallObjectMethodV,
4681 jni_CallObjectMethodA,
4682 jni_CallBooleanMethod,
4683 jni_CallBooleanMethodV,
4684 jni_CallBooleanMethodA,
4685 jni_CallByteMethod,
4686 jni_CallByteMethodV,
4687 jni_CallByteMethodA,
4688 jni_CallCharMethod,
4689 jni_CallCharMethodV,
4690 jni_CallCharMethodA,
4691 jni_CallShortMethod,
4692 jni_CallShortMethodV,
4693 jni_CallShortMethodA,
4694 jni_CallIntMethod,
4695 jni_CallIntMethodV,
4696 jni_CallIntMethodA,
4697 jni_CallLongMethod,
4698 jni_CallLongMethodV,
4699 jni_CallLongMethodA,
4700 jni_CallFloatMethod,
4701 jni_CallFloatMethodV,
4702 jni_CallFloatMethodA,
4703 jni_CallDoubleMethod,
4704 jni_CallDoubleMethodV,
4705 jni_CallDoubleMethodA,
4706 jni_CallVoidMethod,
4707 jni_CallVoidMethodV,
4708 jni_CallVoidMethodA,
4709
4710 jni_CallNonvirtualObjectMethod,
4711 jni_CallNonvirtualObjectMethodV,
4712 jni_CallNonvirtualObjectMethodA,
4713 jni_CallNonvirtualBooleanMethod,
4714 jni_CallNonvirtualBooleanMethodV,
4715 jni_CallNonvirtualBooleanMethodA,
4716 jni_CallNonvirtualByteMethod,
4717 jni_CallNonvirtualByteMethodV,
4718 jni_CallNonvirtualByteMethodA,
4719 jni_CallNonvirtualCharMethod,
4720 jni_CallNonvirtualCharMethodV,
4721 jni_CallNonvirtualCharMethodA,
4722 jni_CallNonvirtualShortMethod,
4723 jni_CallNonvirtualShortMethodV,
4724 jni_CallNonvirtualShortMethodA,
4725 jni_CallNonvirtualIntMethod,
4726 jni_CallNonvirtualIntMethodV,
4727 jni_CallNonvirtualIntMethodA,
4728 jni_CallNonvirtualLongMethod,
4729 jni_CallNonvirtualLongMethodV,
4730 jni_CallNonvirtualLongMethodA,
4731 jni_CallNonvirtualFloatMethod,
4732 jni_CallNonvirtualFloatMethodV,
4733 jni_CallNonvirtualFloatMethodA,
4734 jni_CallNonvirtualDoubleMethod,
4735 jni_CallNonvirtualDoubleMethodV,
4736 jni_CallNonvirtualDoubleMethodA,
4737 jni_CallNonvirtualVoidMethod,
4738 jni_CallNonvirtualVoidMethodV,
4739 jni_CallNonvirtualVoidMethodA,
4740
4741 jni_GetFieldID,
4742
4743 jni_GetObjectField,
4744 jni_GetBooleanField,
4745 jni_GetByteField,
4746 jni_GetCharField,
4747 jni_GetShortField,
4748 jni_GetIntField,
4749 jni_GetLongField,
4750 jni_GetFloatField,
4751 jni_GetDoubleField,
4752
4753 jni_SetObjectField,
4754 jni_SetBooleanField,
4755 jni_SetByteField,
4756 jni_SetCharField,
4757 jni_SetShortField,
4758 jni_SetIntField,
4759 jni_SetLongField,
4760 jni_SetFloatField,
4761 jni_SetDoubleField,
4762
4763 jni_GetStaticMethodID,
4764
4765 jni_CallStaticObjectMethod,
4766 jni_CallStaticObjectMethodV,
4767 jni_CallStaticObjectMethodA,
4768 jni_CallStaticBooleanMethod,
4769 jni_CallStaticBooleanMethodV,
4770 jni_CallStaticBooleanMethodA,
4771 jni_CallStaticByteMethod,
4772 jni_CallStaticByteMethodV,
4773 jni_CallStaticByteMethodA,
4774 jni_CallStaticCharMethod,
4775 jni_CallStaticCharMethodV,
4776 jni_CallStaticCharMethodA,
4777 jni_CallStaticShortMethod,
4778 jni_CallStaticShortMethodV,
4779 jni_CallStaticShortMethodA,
4780 jni_CallStaticIntMethod,
4781 jni_CallStaticIntMethodV,
4782 jni_CallStaticIntMethodA,
4783 jni_CallStaticLongMethod,
4784 jni_CallStaticLongMethodV,
4785 jni_CallStaticLongMethodA,
4786 jni_CallStaticFloatMethod,
4787 jni_CallStaticFloatMethodV,
4788 jni_CallStaticFloatMethodA,
4789 jni_CallStaticDoubleMethod,
4790 jni_CallStaticDoubleMethodV,
4791 jni_CallStaticDoubleMethodA,
4792 jni_CallStaticVoidMethod,
4793 jni_CallStaticVoidMethodV,
4794 jni_CallStaticVoidMethodA,
4795
4796 jni_GetStaticFieldID,
4797
4798 jni_GetStaticObjectField,
4799 jni_GetStaticBooleanField,
4800 jni_GetStaticByteField,
4801 jni_GetStaticCharField,
4802 jni_GetStaticShortField,
4803 jni_GetStaticIntField,
4804 jni_GetStaticLongField,
4805 jni_GetStaticFloatField,
4806 jni_GetStaticDoubleField,
4807
4808 jni_SetStaticObjectField,
4809 jni_SetStaticBooleanField,
4810 jni_SetStaticByteField,
4811 jni_SetStaticCharField,
4812 jni_SetStaticShortField,
4813 jni_SetStaticIntField,
4814 jni_SetStaticLongField,
4815 jni_SetStaticFloatField,
4816 jni_SetStaticDoubleField,
4817
4818 jni_NewString,
4819 jni_GetStringLength,
4820 jni_GetStringChars,
4821 jni_ReleaseStringChars,
4822
4823 jni_NewStringUTF,
4824 jni_GetStringUTFLength,
4825 jni_GetStringUTFChars,
4826 jni_ReleaseStringUTFChars,
4827
4828 jni_GetArrayLength,
4829
4830 jni_NewObjectArray,
4831 jni_GetObjectArrayElement,
4832 jni_SetObjectArrayElement,
4833
4834 jni_NewBooleanArray,
4835 jni_NewByteArray,
4836 jni_NewCharArray,
4837 jni_NewShortArray,
4838 jni_NewIntArray,
4839 jni_NewLongArray,
4840 jni_NewFloatArray,
4841 jni_NewDoubleArray,
4842
4843 jni_GetBooleanArrayElements,
4844 jni_GetByteArrayElements,
4845 jni_GetCharArrayElements,
4846 jni_GetShortArrayElements,
4847 jni_GetIntArrayElements,
4848 jni_GetLongArrayElements,
4849 jni_GetFloatArrayElements,
4850 jni_GetDoubleArrayElements,
4851
4852 jni_ReleaseBooleanArrayElements,
4853 jni_ReleaseByteArrayElements,
4854 jni_ReleaseCharArrayElements,
4855 jni_ReleaseShortArrayElements,
4856 jni_ReleaseIntArrayElements,
4857 jni_ReleaseLongArrayElements,
4858 jni_ReleaseFloatArrayElements,
4859 jni_ReleaseDoubleArrayElements,
4860
4861 jni_GetBooleanArrayRegion,
4862 jni_GetByteArrayRegion,
4863 jni_GetCharArrayRegion,
4864 jni_GetShortArrayRegion,
4865 jni_GetIntArrayRegion,
4866 jni_GetLongArrayRegion,
4867 jni_GetFloatArrayRegion,
4868 jni_GetDoubleArrayRegion,
4869
4870 jni_SetBooleanArrayRegion,
4871 jni_SetByteArrayRegion,
4872 jni_SetCharArrayRegion,
4873 jni_SetShortArrayRegion,
4874 jni_SetIntArrayRegion,
4875 jni_SetLongArrayRegion,
4876 jni_SetFloatArrayRegion,
4877 jni_SetDoubleArrayRegion,
4878
4879 jni_RegisterNatives,
4880 jni_UnregisterNatives,
4881
4882 jni_MonitorEnter,
4883 jni_MonitorExit,
4884
4885 jni_GetJavaVM,
4886
4887 jni_GetStringRegion,
4888 jni_GetStringUTFRegion,
4889
4890 jni_GetPrimitiveArrayCritical,
4891 jni_ReleasePrimitiveArrayCritical,
4892
4893 jni_GetStringCritical,
4894 jni_ReleaseStringCritical,
4895
4896 jni_NewWeakGlobalRef,
4897 jni_DeleteWeakGlobalRef,
4898
4899 jni_ExceptionCheck,
4900
4901 jni_NewDirectByteBuffer,
4902 jni_GetDirectBufferAddress,
4903 jni_GetDirectBufferCapacity,
4904
4905 // New 1_6 features
4906
4907 jni_GetObjectRefType
4908 };
4909
4910
4911 // For jvmti use to modify jni function table.
4912 // Java threads in native contiues to run until it is transitioned
4913 // to VM at safepoint. Before the transition or before it is blocked
4914 // for safepoint it may access jni function table. VM could crash if
4915 // any java thread access the jni function table in the middle of memcpy.
4916 // To avoid this each function pointers are copied automically.
4917 void copy_jni_function_table(const struct JNINativeInterface_ *new_jni_NativeInterface) {
4918 assert(SafepointSynchronize::is_at_safepoint(), "must be at safepoint");
4919 intptr_t *a = (intptr_t *) jni_functions();
4920 intptr_t *b = (intptr_t *) new_jni_NativeInterface;
4921 for (uint i=0; i < sizeof(struct JNINativeInterface_)/sizeof(void *); i++) {
4922 Atomic::store_ptr(*b++, a++);
4923 }
4924 }
4925
4926 void quicken_jni_functions() {
4927 // Replace Get<Primitive>Field with fast versions
4928 if (UseFastJNIAccessors && !JvmtiExport::can_post_field_access()
4929 && !VerifyJNIFields && !TraceJNICalls && !CountJNICalls && !CheckJNICalls
4930 #if defined(_WINDOWS) && defined(IA32) && defined(COMPILER2)
4931 // windows x86 currently needs SEH wrapper and the gain of the fast
4932 // versions currently isn't certain for server vm on uniprocessor.
4933 && os::is_MP()
4934 #endif
4935 ) {
4936 address func;
4937 func = JNI_FastGetField::generate_fast_get_boolean_field();
4938 if (func != (address)-1) {
4939 jni_NativeInterface.GetBooleanField = (GetBooleanField_t)func;
4940 }
4941 func = JNI_FastGetField::generate_fast_get_byte_field();
4942 if (func != (address)-1) {
4943 jni_NativeInterface.GetByteField = (GetByteField_t)func;
4944 }
4945 func = JNI_FastGetField::generate_fast_get_char_field();
4946 if (func != (address)-1) {
4947 jni_NativeInterface.GetCharField = (GetCharField_t)func;
4948 }
4949 func = JNI_FastGetField::generate_fast_get_short_field();
4950 if (func != (address)-1) {
4951 jni_NativeInterface.GetShortField = (GetShortField_t)func;
4952 }
4953 func = JNI_FastGetField::generate_fast_get_int_field();
4954 if (func != (address)-1) {
4955 jni_NativeInterface.GetIntField = (GetIntField_t)func;
4956 }
4957 func = JNI_FastGetField::generate_fast_get_long_field();
4958 if (func != (address)-1) {
4959 jni_NativeInterface.GetLongField = (GetLongField_t)func;
4960 }
4961 func = JNI_FastGetField::generate_fast_get_float_field();
4962 if (func != (address)-1) {
4963 jni_NativeInterface.GetFloatField = (GetFloatField_t)func;
4964 }
4965 func = JNI_FastGetField::generate_fast_get_double_field();
4966 if (func != (address)-1) {
4967 jni_NativeInterface.GetDoubleField = (GetDoubleField_t)func;
4968 }
4969 }
4970 }
4971
4972 // Returns the function structure
4973 struct JNINativeInterface_* jni_functions() {
4974 if (CheckJNICalls) return jni_functions_check();
4975 return &jni_NativeInterface;
4976 }
4977
4978 // Returns the function structure
4979 struct JNINativeInterface_* jni_functions_nocheck() {
4980 return &jni_NativeInterface;
4981 }
4982
4983
4984 // Invocation API
4985
4986
4987 // Forward declaration
4988 extern const struct JNIInvokeInterface_ jni_InvokeInterface;
4989
4990 // Global invocation API vars
4991 volatile jint vm_created = 0;
4992 // Indicate whether it is safe to recreate VM
4993 volatile jint safe_to_recreate_vm = 1;
4994 struct JavaVM_ main_vm = {&jni_InvokeInterface};
4995
4996
4997 #define JAVASTACKSIZE (400 * 1024) /* Default size of a thread java stack */
4998 enum { VERIFY_NONE, VERIFY_REMOTE, VERIFY_ALL };
4999
5000 #ifndef USDT2
5001 HS_DTRACE_PROBE_DECL1(hotspot_jni, GetDefaultJavaVMInitArgs__entry, void*);
5002 DT_RETURN_MARK_DECL(GetDefaultJavaVMInitArgs, jint);
5003 #else /* USDT2 */
5004 DT_RETURN_MARK_DECL(GetDefaultJavaVMInitArgs, jint
5005 , HOTSPOT_JNI_GETDEFAULTJAVAVMINITARGS_RETURN(_ret_ref));
5006 #endif /* USDT2 */
5007
5008 _JNI_IMPORT_OR_EXPORT_ jint JNICALL JNI_GetDefaultJavaVMInitArgs(void *args_) {
5009 #ifndef USDT2
5010 HS_DTRACE_PROBE1(hotspot_jni, GetDefaultJavaVMInitArgs__entry, args_);
5011 #else /* USDT2 */
5012 HOTSPOT_JNI_GETDEFAULTJAVAVMINITARGS_ENTRY(
5013 args_);
5014 #endif /* USDT2 */
5015 JDK1_1InitArgs *args = (JDK1_1InitArgs *)args_;
5016 jint ret = JNI_ERR;
5017 DT_RETURN_MARK(GetDefaultJavaVMInitArgs, jint, (const jint&)ret);
5018
5019 if (Threads::is_supported_jni_version(args->version)) {
5020 ret = JNI_OK;
5021 }
5022 // 1.1 style no longer supported in hotspot.
5023 // According the JNI spec, we should update args->version on return.
5024 // We also use the structure to communicate with launcher about default
5025 // stack size.
5026 if (args->version == JNI_VERSION_1_1) {
5027 args->version = JNI_VERSION_1_2;
5028 // javaStackSize is int in arguments structure
5029 assert(jlong(ThreadStackSize) * K < INT_MAX, "integer overflow");
5030 args->javaStackSize = (jint)(ThreadStackSize * K);
5031 }
5032 return ret;
5033 }
5034
5035 #ifndef PRODUCT
5036
5037 #include "gc_implementation/shared/gcTimer.hpp"
5038 #include "gc_interface/collectedHeap.hpp"
5039 #include "utilities/quickSort.hpp"
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
5049 void execute_internal_vm_tests() {
5050 if (ExecuteInternalVMTests) {
5051 tty->print_cr("Running internal VM tests");
5052 run_unit_test(TestReservedSpace_test());
5053 run_unit_test(TestReserveMemorySpecial_test());
5054 run_unit_test(GCTimerAllTest::all());
5055 run_unit_test(arrayOopDesc::test_max_array_length());
5056 run_unit_test(CollectedHeap::test_is_in());
5057 run_unit_test(QuickSort::test_quick_sort());
5058 run_unit_test(AltHashing::test_alt_hash());
5059 tty->print_cr("All internal VM tests passed");
5060 }
5061 }
5062
5063 #undef run_unit_test
5064
5065 #endif
5066
5067 #ifndef USDT2
5068 HS_DTRACE_PROBE_DECL3(hotspot_jni, CreateJavaVM__entry, vm, penv, args);
5069 DT_RETURN_MARK_DECL(CreateJavaVM, jint);
5070 #else /* USDT2 */
5071 DT_RETURN_MARK_DECL(CreateJavaVM, jint
5072 , HOTSPOT_JNI_CREATEJAVAVM_RETURN(_ret_ref));
5073 #endif /* USDT2 */
5074
5075 _JNI_IMPORT_OR_EXPORT_ jint JNICALL JNI_CreateJavaVM(JavaVM **vm, void **penv, void *args) {
5076 #ifndef USDT2
5077 HS_DTRACE_PROBE3(hotspot_jni, CreateJavaVM__entry, vm, penv, args);
5078 #else /* USDT2 */
5079 HOTSPOT_JNI_CREATEJAVAVM_ENTRY(
5080 (void **) vm, penv, args);
5081 #endif /* USDT2 */
5082
5083 jint result = JNI_ERR;
5084 DT_RETURN_MARK(CreateJavaVM, jint, (const jint&)result);
5085
5086 // We're about to use Atomic::xchg for synchronization. Some Zero
5087 // platforms use the GCC builtin __sync_lock_test_and_set for this,
5088 // but __sync_lock_test_and_set is not guaranteed to do what we want
5089 // on all architectures. So we check it works before relying on it.
5090 #if defined(ZERO) && defined(ASSERT)
5091 {
5092 jint a = 0xcafebabe;
5093 jint b = Atomic::xchg(0xdeadbeef, &a);
5094 void *c = &a;
5095 void *d = Atomic::xchg_ptr(&b, &c);
5096 assert(a == (jint) 0xdeadbeef && b == (jint) 0xcafebabe, "Atomic::xchg() works");
5097 assert(c == &b && d == &a, "Atomic::xchg_ptr() works");
5098 }
5099 #endif // ZERO && ASSERT
5100
5101 // At the moment it's only possible to have one Java VM,
5102 // since some of the runtime state is in global variables.
5103
5104 // We cannot use our mutex locks here, since they only work on
5105 // Threads. We do an atomic compare and exchange to ensure only
5106 // one thread can call this method at a time
5107
5108 // We use Atomic::xchg rather than Atomic::add/dec since on some platforms
5109 // the add/dec implementations are dependent on whether we are running
5110 // on a multiprocessor, and at this stage of initialization the os::is_MP
5111 // function used to determine this will always return false. Atomic::xchg
5112 // does not have this problem.
5113 if (Atomic::xchg(1, &vm_created) == 1) {
5114 return JNI_ERR; // already created, or create attempt in progress
5115 }
5116 if (Atomic::xchg(0, &safe_to_recreate_vm) == 0) {
5117 return JNI_ERR; // someone tried and failed and retry not allowed.
5118 }
5119
5120 assert(vm_created == 1, "vm_created is true during the creation");
5121
5122 /**
5123 * Certain errors during initialization are recoverable and do not
5124 * prevent this method from being called again at a later time
5125 * (perhaps with different arguments). However, at a certain
5126 * point during initialization if an error occurs we cannot allow
5127 * this function to be called again (or it will crash). In those
5128 * situations, the 'canTryAgain' flag is set to false, which atomically
5129 * sets safe_to_recreate_vm to 1, such that any new call to
5130 * JNI_CreateJavaVM will immediately fail using the above logic.
5131 */
5132 bool can_try_again = true;
5133
5134 result = Threads::create_vm((JavaVMInitArgs*) args, &can_try_again);
5135 if (result == JNI_OK) {
5136 JavaThread *thread = JavaThread::current();
5137 /* thread is thread_in_vm here */
5138 *vm = (JavaVM *)(&main_vm);
5139 *(JNIEnv**)penv = thread->jni_environment();
5140
5141 // Tracks the time application was running before GC
5142 RuntimeService::record_application_start();
5143
5144 // Notify JVMTI
5145 if (JvmtiExport::should_post_thread_life()) {
5146 JvmtiExport::post_thread_start(thread);
5147 }
5148
5149 EventThreadStart event;
5150 if (event.should_commit()) {
5151 event.set_javalangthread(java_lang_Thread::thread_id(thread->threadObj()));
5152 event.commit();
5153 }
5154
5155 #ifndef PRODUCT
5156 #ifndef TARGET_OS_FAMILY_windows
5157 #define CALL_TEST_FUNC_WITH_WRAPPER_IF_NEEDED(f) f()
5158 #endif
5159
5160 // Check if we should compile all classes on bootclasspath
5161 if (CompileTheWorld) ClassLoader::compile_the_world();
5162
5163 // Some platforms (like Win*) need a wrapper around these test
5164 // functions in order to properly handle error conditions.
5165 CALL_TEST_FUNC_WITH_WRAPPER_IF_NEEDED(test_error_handler);
5166 CALL_TEST_FUNC_WITH_WRAPPER_IF_NEEDED(execute_internal_vm_tests);
5167 #endif
5168
5169 // Since this is not a JVM_ENTRY we have to set the thread state manually before leaving.
5170 ThreadStateTransition::transition_and_fence(thread, _thread_in_vm, _thread_in_native);
5171 } else {
5172 if (can_try_again) {
5173 // reset safe_to_recreate_vm to 1 so that retrial would be possible
5174 safe_to_recreate_vm = 1;
5175 }
5176
5177 // Creation failed. We must reset vm_created
5178 *vm = 0;
5179 *(JNIEnv**)penv = 0;
5180 // reset vm_created last to avoid race condition. Use OrderAccess to
5181 // control both compiler and architectural-based reordering.
5182 OrderAccess::release_store(&vm_created, 0);
5183 }
5184
5185 return result;
5186 }
5187
5188 #ifndef USDT2
5189 HS_DTRACE_PROBE_DECL3(hotspot_jni, GetCreatedJavaVMs__entry, \
5190 JavaVM**, jsize, jsize*);
5191 HS_DTRACE_PROBE_DECL1(hotspot_jni, GetCreatedJavaVMs__return, jint);
5192 #endif /* !USDT2 */
5193
5194 _JNI_IMPORT_OR_EXPORT_ jint JNICALL JNI_GetCreatedJavaVMs(JavaVM **vm_buf, jsize bufLen, jsize *numVMs) {
5195 // See bug 4367188, the wrapper can sometimes cause VM crashes
5196 // JNIWrapper("GetCreatedJavaVMs");
5197 #ifndef USDT2
5198 HS_DTRACE_PROBE3(hotspot_jni, GetCreatedJavaVMs__entry, \
5199 vm_buf, bufLen, numVMs);
5200 #else /* USDT2 */
5201 HOTSPOT_JNI_GETCREATEDJAVAVMS_ENTRY(
5202 (void **) vm_buf, bufLen, (uintptr_t *) numVMs);
5203 #endif /* USDT2 */
5204 if (vm_created) {
5205 if (numVMs != NULL) *numVMs = 1;
5206 if (bufLen > 0) *vm_buf = (JavaVM *)(&main_vm);
5207 } else {
5208 if (numVMs != NULL) *numVMs = 0;
5209 }
5210 #ifndef USDT2
5211 HS_DTRACE_PROBE1(hotspot_jni, GetCreatedJavaVMs__return, JNI_OK);
5212 #else /* USDT2 */
5213 HOTSPOT_JNI_GETCREATEDJAVAVMS_RETURN(
5214 JNI_OK);
5215 #endif /* USDT2 */
5216 return JNI_OK;
5217 }
5218
5219 extern "C" {
5220
5221 #ifndef USDT2
5222 DT_RETURN_MARK_DECL(DestroyJavaVM, jint);
5223 #else /* USDT2 */
5224 DT_RETURN_MARK_DECL(DestroyJavaVM, jint
5225 , HOTSPOT_JNI_DESTROYJAVAVM_RETURN(_ret_ref));
5226 #endif /* USDT2 */
5227
5228 jint JNICALL jni_DestroyJavaVM(JavaVM *vm) {
5229 #ifndef USDT2
5230 DTRACE_PROBE1(hotspot_jni, DestroyJavaVM__entry, vm);
5231 #else /* USDT2 */
5232 HOTSPOT_JNI_DESTROYJAVAVM_ENTRY(
5233 vm);
5234 #endif /* USDT2 */
5235 jint res = JNI_ERR;
5236 DT_RETURN_MARK(DestroyJavaVM, jint, (const jint&)res);
5237
5238 if (!vm_created) {
5239 res = JNI_ERR;
5240 return res;
5241 }
5242
5243 JNIWrapper("DestroyJavaVM");
5244 JNIEnv *env;
5245 JavaVMAttachArgs destroyargs;
5246 destroyargs.version = CurrentVersion;
5247 destroyargs.name = (char *)"DestroyJavaVM";
5248 destroyargs.group = NULL;
5249 res = vm->AttachCurrentThread((void **)&env, (void *)&destroyargs);
5250 if (res != JNI_OK) {
5251 return res;
5252 }
5253
5254 // Since this is not a JVM_ENTRY we have to set the thread state manually before entering.
5255 JavaThread* thread = JavaThread::current();
5256 ThreadStateTransition::transition_from_native(thread, _thread_in_vm);
5257 if (Threads::destroy_vm()) {
5258 // Should not change thread state, VM is gone
5259 vm_created = false;
5260 res = JNI_OK;
5261 return res;
5262 } else {
5263 ThreadStateTransition::transition_and_fence(thread, _thread_in_vm, _thread_in_native);
5264 res = JNI_ERR;
5265 return res;
5266 }
5267 }
5268
5269
5270 static jint attach_current_thread(JavaVM *vm, void **penv, void *_args, bool daemon) {
5271 JavaVMAttachArgs *args = (JavaVMAttachArgs *) _args;
5272
5273 // Check below commented out from JDK1.2fcs as well
5274 /*
5275 if (args && (args->version != JNI_VERSION_1_1 || args->version != JNI_VERSION_1_2)) {
5276 return JNI_EVERSION;
5277 }
5278 */
5279
5280 Thread* t = ThreadLocalStorage::get_thread_slow();
5281 if (t != NULL) {
5282 // If the thread has been attached this operation is a no-op
5283 *(JNIEnv**)penv = ((JavaThread*) t)->jni_environment();
5284 return JNI_OK;
5285 }
5286
5287 // Create a thread and mark it as attaching so it will be skipped by the
5288 // ThreadsListEnumerator - see CR 6404306
5289 JavaThread* thread = new JavaThread(true);
5290
5291 // Set correct safepoint info. The thread is going to call into Java when
5292 // initializing the Java level thread object. Hence, the correct state must
5293 // be set in order for the Safepoint code to deal with it correctly.
5294 thread->set_thread_state(_thread_in_vm);
5295 // Must do this before initialize_thread_local_storage
5296 thread->record_stack_base_and_size();
5297
5298 thread->initialize_thread_local_storage();
5299
5300 if (!os::create_attached_thread(thread)) {
5301 delete thread;
5302 return JNI_ERR;
5303 }
5304 // Enable stack overflow checks
5305 thread->create_stack_guard_pages();
5306
5307 thread->initialize_tlab();
5308
5309 thread->cache_global_variables();
5310
5311 // Crucial that we do not have a safepoint check for this thread, since it has
5312 // not been added to the Thread list yet.
5313 { Threads_lock->lock_without_safepoint_check();
5314 // This must be inside this lock in order to get FullGCALot to work properly, i.e., to
5315 // avoid this thread trying to do a GC before it is added to the thread-list
5316 thread->set_active_handles(JNIHandleBlock::allocate_block());
5317 Threads::add(thread, daemon);
5318 Threads_lock->unlock();
5319 }
5320 // Create thread group and name info from attach arguments
5321 oop group = NULL;
5322 char* thread_name = NULL;
5323 if (args != NULL && Threads::is_supported_jni_version(args->version)) {
5324 group = JNIHandles::resolve(args->group);
5325 thread_name = args->name; // may be NULL
5326 }
5327 if (group == NULL) group = Universe::main_thread_group();
5328
5329 // Create Java level thread object and attach it to this thread
5330 bool attach_failed = false;
5331 {
5332 EXCEPTION_MARK;
5333 HandleMark hm(THREAD);
5334 Handle thread_group(THREAD, group);
5335 thread->allocate_threadObj(thread_group, thread_name, daemon, THREAD);
5336 if (HAS_PENDING_EXCEPTION) {
5337 CLEAR_PENDING_EXCEPTION;
5338 // cleanup outside the handle mark.
5339 attach_failed = true;
5340 }
5341 }
5342
5343 if (attach_failed) {
5344 // Added missing cleanup
5345 thread->cleanup_failed_attach_current_thread();
5346 return JNI_ERR;
5347 }
5348
5349 // mark the thread as no longer attaching
5350 // this uses a fence to push the change through so we don't have
5351 // to regrab the threads_lock
5352 thread->set_done_attaching_via_jni();
5353
5354 // Set java thread status.
5355 java_lang_Thread::set_thread_status(thread->threadObj(),
5356 java_lang_Thread::RUNNABLE);
5357
5358 // Notify the debugger
5359 if (JvmtiExport::should_post_thread_life()) {
5360 JvmtiExport::post_thread_start(thread);
5361 }
5362
5363 EventThreadStart event;
5364 if (event.should_commit()) {
5365 event.set_javalangthread(java_lang_Thread::thread_id(thread->threadObj()));
5366 event.commit();
5367 }
5368
5369 *(JNIEnv**)penv = thread->jni_environment();
5370
5371 // Now leaving the VM, so change thread_state. This is normally automatically taken care
5372 // of in the JVM_ENTRY. But in this situation we have to do it manually. Notice, that by
5373 // using ThreadStateTransition::transition, we do a callback to the safepoint code if
5374 // needed.
5375
5376 ThreadStateTransition::transition_and_fence(thread, _thread_in_vm, _thread_in_native);
5377
5378 // Perform any platform dependent FPU setup
5379 os::setup_fpu();
5380
5381 return JNI_OK;
5382 }
5383
5384
5385 jint JNICALL jni_AttachCurrentThread(JavaVM *vm, void **penv, void *_args) {
5386 #ifndef USDT2
5387 DTRACE_PROBE3(hotspot_jni, AttachCurrentThread__entry, vm, penv, _args);
5388 #else /* USDT2 */
5389 HOTSPOT_JNI_ATTACHCURRENTTHREAD_ENTRY(
5390 vm, penv, _args);
5391 #endif /* USDT2 */
5392 if (!vm_created) {
5393 #ifndef USDT2
5394 DTRACE_PROBE1(hotspot_jni, AttachCurrentThread__return, JNI_ERR);
5395 #else /* USDT2 */
5396 HOTSPOT_JNI_ATTACHCURRENTTHREAD_RETURN(
5397 (uint32_t) JNI_ERR);
5398 #endif /* USDT2 */
5399 return JNI_ERR;
5400 }
5401
5402 JNIWrapper("AttachCurrentThread");
5403 jint ret = attach_current_thread(vm, penv, _args, false);
5404 #ifndef USDT2
5405 DTRACE_PROBE1(hotspot_jni, AttachCurrentThread__return, ret);
5406 #else /* USDT2 */
5407 HOTSPOT_JNI_ATTACHCURRENTTHREAD_RETURN(
5408 ret);
5409 #endif /* USDT2 */
5410 return ret;
5411 }
5412
5413
5414 jint JNICALL jni_DetachCurrentThread(JavaVM *vm) {
5415 #ifndef USDT2
5416 DTRACE_PROBE1(hotspot_jni, DetachCurrentThread__entry, vm);
5417 #else /* USDT2 */
5418 HOTSPOT_JNI_DETACHCURRENTTHREAD_ENTRY(
5419 vm);
5420 #endif /* USDT2 */
5421 VM_Exit::block_if_vm_exited();
5422
5423 JNIWrapper("DetachCurrentThread");
5424
5425 // If the thread has been deattacted the operations is a no-op
5426 if (ThreadLocalStorage::thread() == NULL) {
5427 #ifndef USDT2
5428 DTRACE_PROBE1(hotspot_jni, DetachCurrentThread__return, JNI_OK);
5429 #else /* USDT2 */
5430 HOTSPOT_JNI_DETACHCURRENTTHREAD_RETURN(
5431 JNI_OK);
5432 #endif /* USDT2 */
5433 return JNI_OK;
5434 }
5435
5436 JavaThread* thread = JavaThread::current();
5437 if (thread->has_last_Java_frame()) {
5438 #ifndef USDT2
5439 DTRACE_PROBE1(hotspot_jni, DetachCurrentThread__return, JNI_ERR);
5440 #else /* USDT2 */
5441 HOTSPOT_JNI_DETACHCURRENTTHREAD_RETURN(
5442 (uint32_t) JNI_ERR);
5443 #endif /* USDT2 */
5444 // Can't detach a thread that's running java, that can't work.
5445 return JNI_ERR;
5446 }
5447
5448 // Safepoint support. Have to do call-back to safepoint code, if in the
5449 // middel of a safepoint operation
5450 ThreadStateTransition::transition_from_native(thread, _thread_in_vm);
5451
5452 // XXX: Note that JavaThread::exit() call below removes the guards on the
5453 // stack pages set up via enable_stack_{red,yellow}_zone() calls
5454 // above in jni_AttachCurrentThread. Unfortunately, while the setting
5455 // of the guards is visible in jni_AttachCurrentThread above,
5456 // the removal of the guards is buried below in JavaThread::exit()
5457 // here. The abstraction should be more symmetrically either exposed
5458 // or hidden (e.g. it could probably be hidden in the same
5459 // (platform-dependent) methods where we do alternate stack
5460 // maintenance work?)
5461 thread->exit(false, JavaThread::jni_detach);
5462 delete thread;
5463
5464 #ifndef USDT2
5465 DTRACE_PROBE1(hotspot_jni, DetachCurrentThread__return, JNI_OK);
5466 #else /* USDT2 */
5467 HOTSPOT_JNI_DETACHCURRENTTHREAD_RETURN(
5468 JNI_OK);
5469 #endif /* USDT2 */
5470 return JNI_OK;
5471 }
5472
5473 #ifndef USDT2
5474 DT_RETURN_MARK_DECL(GetEnv, jint);
5475 #else /* USDT2 */
5476 DT_RETURN_MARK_DECL(GetEnv, jint
5477 , HOTSPOT_JNI_GETENV_RETURN(_ret_ref));
5478 #endif /* USDT2 */
5479
5480 jint JNICALL jni_GetEnv(JavaVM *vm, void **penv, jint version) {
5481 #ifndef USDT2
5482 DTRACE_PROBE3(hotspot_jni, GetEnv__entry, vm, penv, version);
5483 #else /* USDT2 */
5484 HOTSPOT_JNI_GETENV_ENTRY(
5485 vm, penv, version);
5486 #endif /* USDT2 */
5487 jint ret = JNI_ERR;
5488 DT_RETURN_MARK(GetEnv, jint, (const jint&)ret);
5489
5490 if (!vm_created) {
5491 *penv = NULL;
5492 ret = JNI_EDETACHED;
5493 return ret;
5494 }
5495
5496 if (JniExportedInterface::GetExportedInterface(vm, penv, version, &ret)) {
5497 return ret;
5498 }
5499
5500 #ifndef JVMPI_VERSION_1
5501 // need these in order to be polite about older agents
5502 #define JVMPI_VERSION_1 ((jint)0x10000001)
5503 #define JVMPI_VERSION_1_1 ((jint)0x10000002)
5504 #define JVMPI_VERSION_1_2 ((jint)0x10000003)
5505 #endif // !JVMPI_VERSION_1
5506
5507 Thread* thread = ThreadLocalStorage::thread();
5508 if (thread != NULL && thread->is_Java_thread()) {
5509 if (Threads::is_supported_jni_version_including_1_1(version)) {
5510 *(JNIEnv**)penv = ((JavaThread*) thread)->jni_environment();
5511 ret = JNI_OK;
5512 return ret;
5513
5514 } else if (version == JVMPI_VERSION_1 ||
5515 version == JVMPI_VERSION_1_1 ||
5516 version == JVMPI_VERSION_1_2) {
5517 tty->print_cr("ERROR: JVMPI, an experimental interface, is no longer supported.");
5518 tty->print_cr("Please use the supported interface: the JVM Tool Interface (JVM TI).");
5519 ret = JNI_EVERSION;
5520 return ret;
5521 } else if (JvmtiExport::is_jvmdi_version(version)) {
5522 tty->print_cr("FATAL ERROR: JVMDI is no longer supported.");
5523 tty->print_cr("Please use the supported interface: the JVM Tool Interface (JVM TI).");
5524 ret = JNI_EVERSION;
5525 return ret;
5526 } else {
5527 *penv = NULL;
5528 ret = JNI_EVERSION;
5529 return ret;
5530 }
5531 } else {
5532 *penv = NULL;
5533 ret = JNI_EDETACHED;
5534 return ret;
5535 }
5536 }
5537
5538
5539 jint JNICALL jni_AttachCurrentThreadAsDaemon(JavaVM *vm, void **penv, void *_args) {
5540 #ifndef USDT2
5541 DTRACE_PROBE3(hotspot_jni, AttachCurrentThreadAsDaemon__entry, vm, penv, _args);
5542 #else /* USDT2 */
5543 HOTSPOT_JNI_ATTACHCURRENTTHREADASDAEMON_ENTRY(
5544 vm, penv, _args);
5545 #endif /* USDT2 */
5546 if (!vm_created) {
5547 #ifndef USDT2
5548 DTRACE_PROBE1(hotspot_jni, AttachCurrentThreadAsDaemon__return, JNI_ERR);
5549 #else /* USDT2 */
5550 HOTSPOT_JNI_ATTACHCURRENTTHREADASDAEMON_RETURN(
5551 (uint32_t) JNI_ERR);
5552 #endif /* USDT2 */
5553 return JNI_ERR;
5554 }
5555
5556 JNIWrapper("AttachCurrentThreadAsDaemon");
5557 jint ret = attach_current_thread(vm, penv, _args, true);
5558 #ifndef USDT2
5559 DTRACE_PROBE1(hotspot_jni, AttachCurrentThreadAsDaemon__return, ret);
5560 #else /* USDT2 */
5561 HOTSPOT_JNI_ATTACHCURRENTTHREADASDAEMON_RETURN(
5562 ret);
5563 #endif /* USDT2 */
5564 return ret;
5565 }
5566
5567
5568 } // End extern "C"
5569
5570 const struct JNIInvokeInterface_ jni_InvokeInterface = {
5571 NULL,
5572 NULL,
5573 NULL,
5574
5575 jni_DestroyJavaVM,
5576 jni_AttachCurrentThread,
5577 jni_DetachCurrentThread,
5578 jni_GetEnv,
5579 jni_AttachCurrentThreadAsDaemon
5580 };