1 /*
2 * Copyright (c) 1997, 2013, Oracle and/or its affiliates. All rights reserved.
3 * Copyright (c) 2012 Red Hat, Inc.
4 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
5 *
6 * This code is free software; you can redistribute it and/or modify it
7 * under the terms of the GNU General Public License version 2 only, as
8 * published by the Free Software Foundation.
9 *
10 * This code is distributed in the hope that it will be useful, but WITHOUT
11 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
12 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
13 * version 2 for more details (a copy is included in the LICENSE file that
14 * accompanied this code).
15 *
16 * You should have received a copy of the GNU General Public License version
17 * 2 along with this work; if not, write to the Free Software Foundation,
18 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
19 *
20 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
21 * or visit www.oracle.com if you need additional information or have any
22 * questions.
23 *
24 */
25
26 #include "precompiled.hpp"
27 #include "ci/ciReplay.hpp"
28 #include "classfile/altHashing.hpp"
29 #include "classfile/classLoader.hpp"
30 #include "classfile/javaClasses.hpp"
31 #include "classfile/symbolTable.hpp"
32 #include "classfile/systemDictionary.hpp"
33 #include "classfile/vmSymbols.hpp"
34 #include "interpreter/linkResolver.hpp"
35 #include "utilities/macros.hpp"
36 #if INCLUDE_ALL_GCS
37 #include "gc_implementation/g1/g1SATBCardTableModRefBS.hpp"
38 #endif // INCLUDE_ALL_GCS
39 #include "memory/allocation.hpp"
40 #include "memory/allocation.inline.hpp"
41 #include "memory/gcLocker.inline.hpp"
42 #include "memory/oopFactory.hpp"
43 #include "memory/universe.inline.hpp"
44 #include "oops/instanceKlass.hpp"
45 #include "oops/instanceOop.hpp"
46 #include "oops/markOop.hpp"
47 #include "oops/method.hpp"
48 #include "oops/objArrayKlass.hpp"
49 #include "oops/objArrayOop.hpp"
50 #include "oops/oop.inline.hpp"
51 #include "oops/symbol.hpp"
52 #include "oops/typeArrayKlass.hpp"
53 #include "oops/typeArrayOop.hpp"
54 #include "prims/jni.h"
55 #include "prims/jniCheck.hpp"
56 #include "prims/jniExport.hpp"
57 #include "prims/jniFastGetField.hpp"
58 #include "prims/jvm.h"
59 #include "prims/jvm_misc.hpp"
60 #include "prims/jvmtiExport.hpp"
61 #include "prims/jvmtiThreadState.hpp"
62 #include "runtime/compilationPolicy.hpp"
63 #include "runtime/fieldDescriptor.hpp"
64 #include "runtime/fprofiler.hpp"
65 #include "runtime/handles.inline.hpp"
66 #include "runtime/interfaceSupport.hpp"
67 #include "runtime/java.hpp"
68 #include "runtime/javaCalls.hpp"
69 #include "runtime/jfieldIDWorkaround.hpp"
70 #include "runtime/reflection.hpp"
71 #include "runtime/sharedRuntime.hpp"
72 #include "runtime/signature.hpp"
73 #include "runtime/thread.inline.hpp"
74 #include "runtime/vm_operations.hpp"
75 #include "services/runtimeService.hpp"
76 #include "trace/tracing.hpp"
77 #include "utilities/defaultStream.hpp"
78 #include "utilities/dtrace.hpp"
79 #include "utilities/events.hpp"
80 #include "utilities/histogram.hpp"
81 #ifdef TARGET_OS_FAMILY_linux
82 # include "os_linux.inline.hpp"
83 #endif
84 #ifdef TARGET_OS_FAMILY_solaris
85 # include "os_solaris.inline.hpp"
86 #endif
87 #ifdef TARGET_OS_FAMILY_windows
88 # include "os_windows.inline.hpp"
89 #endif
90 #ifdef TARGET_OS_FAMILY_bsd
91 # include "os_bsd.inline.hpp"
92 #endif
93
94 static jint CurrentVersion = JNI_VERSION_1_8;
95
96
97 // The DT_RETURN_MARK macros create a scoped object to fire the dtrace
98 // '-return' probe regardless of the return path is taken out of the function.
99 // Methods that have multiple return paths use this to avoid having to
100 // instrument each return path. Methods that use CHECK or THROW must use this
101 // since those macros can cause an immedate uninstrumented return.
102 //
103 // In order to get the return value, a reference to the variable containing
104 // the return value must be passed to the contructor of the object, and
105 // the return value must be set before return (since the mark object has
106 // a reference to it).
107 //
108 // Example:
109 // DT_RETURN_MARK_DECL(SomeFunc, int);
110 // JNI_ENTRY(int, SomeFunc, ...)
111 // int return_value = 0;
112 // DT_RETURN_MARK(SomeFunc, int, (const int&)return_value);
113 // foo(CHECK_0)
114 // return_value = 5;
115 // return return_value;
116 // JNI_END
117 #ifndef USDT2
118 #define DT_RETURN_MARK_DECL(name, type) \
119 HS_DTRACE_PROBE_DECL1(hotspot_jni, name##__return, type); \
120 DTRACE_ONLY( \
121 class DTraceReturnProbeMark_##name { \
122 public: \
123 const type& _ret_ref; \
124 DTraceReturnProbeMark_##name(const type& v) : _ret_ref(v) {} \
125 ~DTraceReturnProbeMark_##name() { \
126 HS_DTRACE_PROBE1(hotspot_jni, name##__return, _ret_ref); \
127 } \
128 } \
129 )
130 // Void functions are simpler since there's no return value
131 #define DT_VOID_RETURN_MARK_DECL(name) \
132 HS_DTRACE_PROBE_DECL0(hotspot_jni, name##__return); \
133 DTRACE_ONLY( \
134 class DTraceReturnProbeMark_##name { \
135 public: \
136 ~DTraceReturnProbeMark_##name() { \
137 HS_DTRACE_PROBE0(hotspot_jni, name##__return); \
138 } \
139 } \
140 )
141
142 #else /* USDT2 */
143
144 #define DT_RETURN_MARK_DECL(name, type, probe) \
145 DTRACE_ONLY( \
146 class DTraceReturnProbeMark_##name { \
147 public: \
148 const type& _ret_ref; \
149 DTraceReturnProbeMark_##name(const type& v) : _ret_ref(v) {} \
150 ~DTraceReturnProbeMark_##name() { \
151 probe; \
152 } \
153 } \
154 )
155 // Void functions are simpler since there's no return value
156 #define DT_VOID_RETURN_MARK_DECL(name, probe) \
157 DTRACE_ONLY( \
158 class DTraceReturnProbeMark_##name { \
159 public: \
160 ~DTraceReturnProbeMark_##name() { \
161 probe; \
162 } \
163 } \
164 )
165 #endif /* USDT2 */
166
167 // Place these macros in the function to mark the return. Non-void
168 // functions need the type and address of the return value.
169 #define DT_RETURN_MARK(name, type, ref) \
170 DTRACE_ONLY( DTraceReturnProbeMark_##name dtrace_return_mark(ref) )
171 #define DT_VOID_RETURN_MARK(name) \
172 DTRACE_ONLY( DTraceReturnProbeMark_##name dtrace_return_mark )
173
174
175 // Use these to select distinct code for floating-point vs. non-floating point
176 // situations. Used from within common macros where we need slightly
177 // different behavior for Float/Double
178 #define FP_SELECT_Boolean(intcode, fpcode) intcode
179 #define FP_SELECT_Byte(intcode, fpcode) intcode
180 #define FP_SELECT_Char(intcode, fpcode) intcode
181 #define FP_SELECT_Short(intcode, fpcode) intcode
182 #define FP_SELECT_Object(intcode, fpcode) intcode
183 #define FP_SELECT_Int(intcode, fpcode) intcode
184 #define FP_SELECT_Long(intcode, fpcode) intcode
185 #define FP_SELECT_Float(intcode, fpcode) fpcode
186 #define FP_SELECT_Double(intcode, fpcode) fpcode
187 #define FP_SELECT(TypeName, intcode, fpcode) \
188 FP_SELECT_##TypeName(intcode, fpcode)
189
190 #define COMMA ,
191
192 // Choose DT_RETURN_MARK macros based on the type: float/double -> void
193 // (dtrace doesn't do FP yet)
194 #ifndef USDT2
195 #define DT_RETURN_MARK_DECL_FOR(TypeName, name, type) \
196 FP_SELECT(TypeName, \
197 DT_RETURN_MARK_DECL(name, type), DT_VOID_RETURN_MARK_DECL(name) )
198 #else /* USDT2 */
199 #define DT_RETURN_MARK_DECL_FOR(TypeName, name, type, probe) \
200 FP_SELECT(TypeName, \
201 DT_RETURN_MARK_DECL(name, type, probe), DT_VOID_RETURN_MARK_DECL(name, probe) )
202 #endif /* USDT2 */
203 #define DT_RETURN_MARK_FOR(TypeName, name, type, ref) \
204 FP_SELECT(TypeName, \
205 DT_RETURN_MARK(name, type, ref), DT_VOID_RETURN_MARK(name) )
206
207
208 // out-of-line helpers for class jfieldIDWorkaround:
209
210 bool jfieldIDWorkaround::is_valid_jfieldID(Klass* k, jfieldID id) {
211 if (jfieldIDWorkaround::is_instance_jfieldID(k, id)) {
212 uintptr_t as_uint = (uintptr_t) id;
213 intptr_t offset = raw_instance_offset(id);
214 if (is_checked_jfieldID(id)) {
215 if (!klass_hash_ok(k, id)) {
216 return false;
217 }
218 }
219 return InstanceKlass::cast(k)->contains_field_offset(offset);
220 } else {
221 JNIid* result = (JNIid*) id;
222 #ifdef ASSERT
223 return result != NULL && result->is_static_field_id();
224 #else
225 return result != NULL;
226 #endif
227 }
228 }
229
230
231 intptr_t jfieldIDWorkaround::encode_klass_hash(Klass* k, intptr_t offset) {
232 if (offset <= small_offset_mask) {
233 Klass* field_klass = k;
234 Klass* super_klass = field_klass->super();
235 // With compressed oops the most super class with nonstatic fields would
236 // be the owner of fields embedded in the header.
237 while (InstanceKlass::cast(super_klass)->has_nonstatic_fields() &&
238 InstanceKlass::cast(super_klass)->contains_field_offset(offset)) {
239 field_klass = super_klass; // super contains the field also
240 super_klass = field_klass->super();
241 }
242 debug_only(No_Safepoint_Verifier nosafepoint;)
243 uintptr_t klass_hash = field_klass->identity_hash();
244 return ((klass_hash & klass_mask) << klass_shift) | checked_mask_in_place;
245 } else {
246 #if 0
247 #ifndef PRODUCT
248 {
249 ResourceMark rm;
250 warning("VerifyJNIFields: long offset %d in %s", offset, k->external_name());
251 }
252 #endif
253 #endif
254 return 0;
255 }
256 }
257
258 bool jfieldIDWorkaround::klass_hash_ok(Klass* k, jfieldID id) {
259 uintptr_t as_uint = (uintptr_t) id;
260 intptr_t klass_hash = (as_uint >> klass_shift) & klass_mask;
261 do {
262 debug_only(No_Safepoint_Verifier nosafepoint;)
263 // Could use a non-blocking query for identity_hash here...
264 if ((k->identity_hash() & klass_mask) == klass_hash)
265 return true;
266 k = k->super();
267 } while (k != NULL);
268 return false;
269 }
270
271 void jfieldIDWorkaround::verify_instance_jfieldID(Klass* k, jfieldID id) {
272 guarantee(jfieldIDWorkaround::is_instance_jfieldID(k, id), "must be an instance field" );
273 uintptr_t as_uint = (uintptr_t) id;
274 intptr_t offset = raw_instance_offset(id);
275 if (VerifyJNIFields) {
276 if (is_checked_jfieldID(id)) {
277 guarantee(klass_hash_ok(k, id),
278 "Bug in native code: jfieldID class must match object");
279 } else {
280 #if 0
281 #ifndef PRODUCT
282 if (Verbose) {
283 ResourceMark rm;
284 warning("VerifyJNIFields: unverified offset %d for %s", offset, k->external_name());
285 }
286 #endif
287 #endif
288 }
289 }
290 guarantee(InstanceKlass::cast(k)->contains_field_offset(offset),
291 "Bug in native code: jfieldID offset must address interior of object");
292 }
293
294 // Pick a reasonable higher bound for local capacity requested
295 // for EnsureLocalCapacity and PushLocalFrame. We don't want it too
296 // high because a test (or very unusual application) may try to allocate
297 // that many handles and run out of swap space. An implementation is
298 // permitted to allocate more handles than the ensured capacity, so this
299 // value is set high enough to prevent compatibility problems.
300 const int MAX_REASONABLE_LOCAL_CAPACITY = 4*K;
301
302
303 // Wrapper to trace JNI functions
304
305 #ifdef ASSERT
306 Histogram* JNIHistogram;
307 static volatile jint JNIHistogram_lock = 0;
308
309 class JNITraceWrapper : public StackObj {
310 public:
311 JNITraceWrapper(const char* format, ...) {
312 if (TraceJNICalls) {
313 va_list ap;
314 va_start(ap, format);
315 tty->print("JNI ");
316 tty->vprint_cr(format, ap);
317 va_end(ap);
318 }
319 }
320 };
321
322 class JNIHistogramElement : public HistogramElement {
323 public:
324 JNIHistogramElement(const char* name);
325 };
326
327 JNIHistogramElement::JNIHistogramElement(const char* elementName) {
328 _name = elementName;
329 uintx count = 0;
330
331 while (Atomic::cmpxchg(1, &JNIHistogram_lock, 0) != 0) {
332 while (OrderAccess::load_acquire(&JNIHistogram_lock) != 0) {
333 count +=1;
334 if ( (WarnOnStalledSpinLock > 0)
335 && (count % WarnOnStalledSpinLock == 0)) {
336 warning("JNIHistogram_lock seems to be stalled");
337 }
338 }
339 }
340
341
342 if(JNIHistogram == NULL)
343 JNIHistogram = new Histogram("JNI Call Counts",100);
344
345 JNIHistogram->add_element(this);
346 Atomic::dec(&JNIHistogram_lock);
347 }
348
349 #define JNICountWrapper(arg) \
350 static JNIHistogramElement* e = new JNIHistogramElement(arg); \
351 /* There is a MT-race condition in VC++. So we need to make sure that that e has been initialized */ \
352 if (e != NULL) e->increment_count()
353 #define JNIWrapper(arg) JNICountWrapper(arg); JNITraceWrapper(arg)
354 #else
355 #define JNIWrapper(arg)
356 #endif
357
358
359 // Implementation of JNI entries
360
361 #ifndef USDT2
362 DT_RETURN_MARK_DECL(DefineClass, jclass);
363 #else /* USDT2 */
364 DT_RETURN_MARK_DECL(DefineClass, jclass
365 , HOTSPOT_JNI_DEFINECLASS_RETURN(_ret_ref));
366 #endif /* USDT2 */
367
368 JNI_ENTRY(jclass, jni_DefineClass(JNIEnv *env, const char *name, jobject loaderRef,
369 const jbyte *buf, jsize bufLen))
370 JNIWrapper("DefineClass");
371
372 #ifndef USDT2
373 DTRACE_PROBE5(hotspot_jni, DefineClass__entry,
374 env, name, loaderRef, buf, bufLen);
375 #else /* USDT2 */
376 HOTSPOT_JNI_DEFINECLASS_ENTRY(
377 env, (char*) name, loaderRef, (char*) buf, bufLen);
378 #endif /* USDT2 */
379 jclass cls = NULL;
380 DT_RETURN_MARK(DefineClass, jclass, (const jclass&)cls);
381
382 TempNewSymbol class_name = NULL;
383 // Since exceptions can be thrown, class initialization can take place
384 // if name is NULL no check for class name in .class stream has to be made.
385 if (name != NULL) {
386 const int str_len = (int)strlen(name);
387 if (str_len > Symbol::max_length()) {
388 // It's impossible to create this class; the name cannot fit
389 // into the constant pool.
390 THROW_MSG_0(vmSymbols::java_lang_NoClassDefFoundError(), name);
391 }
392 class_name = SymbolTable::new_symbol(name, CHECK_NULL);
393 }
394 ResourceMark rm(THREAD);
395 ClassFileStream st((u1*) buf, bufLen, NULL);
396 Handle class_loader (THREAD, JNIHandles::resolve(loaderRef));
397
398 if (UsePerfData && !class_loader.is_null()) {
399 // check whether the current caller thread holds the lock or not.
400 // If not, increment the corresponding counter
401 if (ObjectSynchronizer::
402 query_lock_ownership((JavaThread*)THREAD, class_loader) !=
403 ObjectSynchronizer::owner_self) {
404 ClassLoader::sync_JNIDefineClassLockFreeCounter()->inc();
405 }
406 }
407 Klass* k = SystemDictionary::resolve_from_stream(class_name, class_loader,
408 Handle(), &st, true,
409 CHECK_NULL);
410
411 if (TraceClassResolution && k != NULL) {
412 trace_class_resolution(k);
413 }
414
415 cls = (jclass)JNIHandles::make_local(
416 env, k->java_mirror());
417 return cls;
418 JNI_END
419
420
421
422 static bool first_time_FindClass = true;
423
424 #ifndef USDT2
425 DT_RETURN_MARK_DECL(FindClass, jclass);
426 #else /* USDT2 */
427 DT_RETURN_MARK_DECL(FindClass, jclass
428 , HOTSPOT_JNI_FINDCLASS_RETURN(_ret_ref));
429 #endif /* USDT2 */
430
431 JNI_ENTRY(jclass, jni_FindClass(JNIEnv *env, const char *name))
432 JNIWrapper("FindClass");
433 #ifndef USDT2
434 DTRACE_PROBE2(hotspot_jni, FindClass__entry, env, name);
435 #else /* USDT2 */
436 HOTSPOT_JNI_FINDCLASS_ENTRY(
437 env, (char *)name);
438 #endif /* USDT2 */
439
440 jclass result = NULL;
441 DT_RETURN_MARK(FindClass, jclass, (const jclass&)result);
442
443 // Remember if we are the first invocation of jni_FindClass
444 bool first_time = first_time_FindClass;
445 first_time_FindClass = false;
446
447 // Sanity check the name: it cannot be null or larger than the maximum size
448 // name we can fit in the constant pool.
449 if (name == NULL || (int)strlen(name) > Symbol::max_length()) {
450 THROW_MSG_0(vmSymbols::java_lang_NoClassDefFoundError(), name);
451 }
452
453 //%note jni_3
454 Handle loader;
455 Handle protection_domain;
456 // Find calling class
457 instanceKlassHandle k (THREAD, thread->security_get_caller_class(0));
458 if (k.not_null()) {
459 loader = Handle(THREAD, k->class_loader());
460 // Special handling to make sure JNI_OnLoad and JNI_OnUnload are executed
461 // in the correct class context.
462 if (loader.is_null() &&
463 k->name() == vmSymbols::java_lang_ClassLoader_NativeLibrary()) {
464 JavaValue result(T_OBJECT);
465 JavaCalls::call_static(&result, k,
466 vmSymbols::getFromClass_name(),
467 vmSymbols::void_class_signature(),
468 thread);
469 if (HAS_PENDING_EXCEPTION) {
470 Handle ex(thread, thread->pending_exception());
471 CLEAR_PENDING_EXCEPTION;
472 THROW_HANDLE_0(ex);
473 }
474 oop mirror = (oop) result.get_jobject();
475 loader = Handle(THREAD,
476 InstanceKlass::cast(java_lang_Class::as_Klass(mirror))->class_loader());
477 protection_domain = Handle(THREAD,
478 InstanceKlass::cast(java_lang_Class::as_Klass(mirror))->protection_domain());
479 }
480 } else {
481 // We call ClassLoader.getSystemClassLoader to obtain the system class loader.
482 loader = Handle(THREAD, SystemDictionary::java_system_loader());
483 }
484
485 TempNewSymbol sym = SymbolTable::new_symbol(name, CHECK_NULL);
486 result = find_class_from_class_loader(env, sym, true, loader,
487 protection_domain, true, thread);
488
489 if (TraceClassResolution && result != NULL) {
490 trace_class_resolution(java_lang_Class::as_Klass(JNIHandles::resolve_non_null(result)));
491 }
492
493 // If we were the first invocation of jni_FindClass, we enable compilation again
494 // rather than just allowing invocation counter to overflow and decay.
495 // Controlled by flag DelayCompilationDuringStartup.
496 if (first_time && !CompileTheWorld)
497 CompilationPolicy::completed_vm_startup();
498
499 return result;
500 JNI_END
501
502 #ifndef USDT2
503 DT_RETURN_MARK_DECL(FromReflectedMethod, jmethodID);
504 #else /* USDT2 */
505 DT_RETURN_MARK_DECL(FromReflectedMethod, jmethodID
506 , HOTSPOT_JNI_FROMREFLECTEDMETHOD_RETURN((uintptr_t)_ret_ref));
507 #endif /* USDT2 */
508
509 JNI_ENTRY(jmethodID, jni_FromReflectedMethod(JNIEnv *env, jobject method))
510 JNIWrapper("FromReflectedMethod");
511 #ifndef USDT2
512 DTRACE_PROBE2(hotspot_jni, FromReflectedMethod__entry, env, method);
513 #else /* USDT2 */
514 HOTSPOT_JNI_FROMREFLECTEDMETHOD_ENTRY(
515 env, method);
516 #endif /* USDT2 */
517 jmethodID ret = NULL;
518 DT_RETURN_MARK(FromReflectedMethod, jmethodID, (const jmethodID&)ret);
519
520 // method is a handle to a java.lang.reflect.Method object
521 oop reflected = JNIHandles::resolve_non_null(method);
522 oop mirror = NULL;
523 int slot = 0;
524
525 if (reflected->klass() == SystemDictionary::reflect_Constructor_klass()) {
526 mirror = java_lang_reflect_Constructor::clazz(reflected);
527 slot = java_lang_reflect_Constructor::slot(reflected);
528 } else {
529 assert(reflected->klass() == SystemDictionary::reflect_Method_klass(), "wrong type");
530 mirror = java_lang_reflect_Method::clazz(reflected);
531 slot = java_lang_reflect_Method::slot(reflected);
532 }
533 Klass* k = java_lang_Class::as_Klass(mirror);
534
535 KlassHandle k1(THREAD, k);
536 // Make sure class is initialized before handing id's out to methods
537 k1()->initialize(CHECK_NULL);
538 Method* m = InstanceKlass::cast(k1())->method_with_idnum(slot);
539 ret = m==NULL? NULL : m->jmethod_id(); // return NULL if reflected method deleted
540 return ret;
541 JNI_END
542
543 #ifndef USDT2
544 DT_RETURN_MARK_DECL(FromReflectedField, jfieldID);
545 #else /* USDT2 */
546 DT_RETURN_MARK_DECL(FromReflectedField, jfieldID
547 , HOTSPOT_JNI_FROMREFLECTEDFIELD_RETURN((uintptr_t)_ret_ref));
548 #endif /* USDT2 */
549
550 JNI_ENTRY(jfieldID, jni_FromReflectedField(JNIEnv *env, jobject field))
551 JNIWrapper("FromReflectedField");
552 #ifndef USDT2
553 DTRACE_PROBE2(hotspot_jni, FromReflectedField__entry, env, field);
554 #else /* USDT2 */
555 HOTSPOT_JNI_FROMREFLECTEDFIELD_ENTRY(
556 env, field);
557 #endif /* USDT2 */
558 jfieldID ret = NULL;
559 DT_RETURN_MARK(FromReflectedField, jfieldID, (const jfieldID&)ret);
560
561 // field is a handle to a java.lang.reflect.Field object
562 oop reflected = JNIHandles::resolve_non_null(field);
563 oop mirror = java_lang_reflect_Field::clazz(reflected);
564 Klass* k = java_lang_Class::as_Klass(mirror);
565 int slot = java_lang_reflect_Field::slot(reflected);
566 int modifiers = java_lang_reflect_Field::modifiers(reflected);
567
568 KlassHandle k1(THREAD, k);
569 // Make sure class is initialized before handing id's out to fields
570 k1()->initialize(CHECK_NULL);
571
572 // First check if this is a static field
573 if (modifiers & JVM_ACC_STATIC) {
574 intptr_t offset = InstanceKlass::cast(k1())->field_offset( slot );
575 JNIid* id = InstanceKlass::cast(k1())->jni_id_for(offset);
576 assert(id != NULL, "corrupt Field object");
577 debug_only(id->set_is_static_field_id();)
578 // A jfieldID for a static field is a JNIid specifying the field holder and the offset within the Klass*
579 ret = jfieldIDWorkaround::to_static_jfieldID(id);
580 return ret;
581 }
582
583 // The slot is the index of the field description in the field-array
584 // The jfieldID is the offset of the field within the object
585 // It may also have hash bits for k, if VerifyJNIFields is turned on.
586 intptr_t offset = InstanceKlass::cast(k1())->field_offset( slot );
587 assert(InstanceKlass::cast(k1())->contains_field_offset(offset), "stay within object");
588 ret = jfieldIDWorkaround::to_instance_jfieldID(k1(), offset);
589 return ret;
590 JNI_END
591
592 #ifndef USDT2
593 DT_RETURN_MARK_DECL(ToReflectedMethod, jobject);
594 #else /* USDT2 */
595 DT_RETURN_MARK_DECL(ToReflectedMethod, jobject
596 , HOTSPOT_JNI_TOREFLECTEDMETHOD_RETURN(_ret_ref));
597 #endif /* USDT2 */
598
599 JNI_ENTRY(jobject, jni_ToReflectedMethod(JNIEnv *env, jclass cls, jmethodID method_id, jboolean isStatic))
600 JNIWrapper("ToReflectedMethod");
601 #ifndef USDT2
602 DTRACE_PROBE4(hotspot_jni, ToReflectedMethod__entry, env, cls, method_id, isStatic);
603 #else /* USDT2 */
604 HOTSPOT_JNI_TOREFLECTEDMETHOD_ENTRY(
605 env, cls, (uintptr_t) method_id, isStatic);
606 #endif /* USDT2 */
607 jobject ret = NULL;
608 DT_RETURN_MARK(ToReflectedMethod, jobject, (const jobject&)ret);
609
610 methodHandle m (THREAD, Method::resolve_jmethod_id(method_id));
611 assert(m->is_static() == (isStatic != 0), "jni_ToReflectedMethod access flags doesn't match");
612 oop reflection_method;
613 if (m->is_initializer()) {
614 reflection_method = Reflection::new_constructor(m, CHECK_NULL);
615 } else {
616 reflection_method = Reflection::new_method(m, UseNewReflection, false, CHECK_NULL);
617 }
618 ret = JNIHandles::make_local(env, reflection_method);
619 return ret;
620 JNI_END
621
622 #ifndef USDT2
623 DT_RETURN_MARK_DECL(GetSuperclass, jclass);
624 #else /* USDT2 */
625 DT_RETURN_MARK_DECL(GetSuperclass, jclass
626 , HOTSPOT_JNI_GETSUPERCLASS_RETURN(_ret_ref));
627 #endif /* USDT2 */
628
629 JNI_ENTRY(jclass, jni_GetSuperclass(JNIEnv *env, jclass sub))
630 JNIWrapper("GetSuperclass");
631 #ifndef USDT2
632 DTRACE_PROBE2(hotspot_jni, GetSuperclass__entry, env, sub);
633 #else /* USDT2 */
634 HOTSPOT_JNI_GETSUPERCLASS_ENTRY(
635 env, sub);
636 #endif /* USDT2 */
637 jclass obj = NULL;
638 DT_RETURN_MARK(GetSuperclass, jclass, (const jclass&)obj);
639
640 oop mirror = JNIHandles::resolve_non_null(sub);
641 // primitive classes return NULL
642 if (java_lang_Class::is_primitive(mirror)) return NULL;
643
644 // Rules of Class.getSuperClass as implemented by KLass::java_super:
645 // arrays return Object
646 // interfaces return NULL
647 // proper classes return Klass::super()
648 Klass* k = java_lang_Class::as_Klass(mirror);
649 if (k->is_interface()) return NULL;
650
651 // return mirror for superclass
652 Klass* super = k->java_super();
653 // super2 is the value computed by the compiler's getSuperClass intrinsic:
654 debug_only(Klass* super2 = ( k->oop_is_array()
655 ? SystemDictionary::Object_klass()
656 : k->super() ) );
657 assert(super == super2,
658 "java_super computation depends on interface, array, other super");
659 obj = (super == NULL) ? NULL : (jclass) JNIHandles::make_local(super->java_mirror());
660 return obj;
661 JNI_END
662
663 JNI_QUICK_ENTRY(jboolean, jni_IsAssignableFrom(JNIEnv *env, jclass sub, jclass super))
664 JNIWrapper("IsSubclassOf");
665 #ifndef USDT2
666 DTRACE_PROBE3(hotspot_jni, IsAssignableFrom__entry, env, sub, super);
667 #else /* USDT2 */
668 HOTSPOT_JNI_ISASSIGNABLEFROM_ENTRY(
669 env, sub, super);
670 #endif /* USDT2 */
671 oop sub_mirror = JNIHandles::resolve_non_null(sub);
672 oop super_mirror = JNIHandles::resolve_non_null(super);
673 if (java_lang_Class::is_primitive(sub_mirror) ||
674 java_lang_Class::is_primitive(super_mirror)) {
675 jboolean ret = (sub_mirror == super_mirror);
676 #ifndef USDT2
677 DTRACE_PROBE1(hotspot_jni, IsAssignableFrom__return, ret);
678 #else /* USDT2 */
679 HOTSPOT_JNI_ISASSIGNABLEFROM_RETURN(
680 ret);
681 #endif /* USDT2 */
682 return ret;
683 }
684 Klass* sub_klass = java_lang_Class::as_Klass(sub_mirror);
685 Klass* super_klass = java_lang_Class::as_Klass(super_mirror);
686 assert(sub_klass != NULL && super_klass != NULL, "invalid arguments to jni_IsAssignableFrom");
687 jboolean ret = sub_klass->is_subtype_of(super_klass) ?
688 JNI_TRUE : JNI_FALSE;
689 #ifndef USDT2
690 DTRACE_PROBE1(hotspot_jni, IsAssignableFrom__return, ret);
691 #else /* USDT2 */
692 HOTSPOT_JNI_ISASSIGNABLEFROM_RETURN(
693 ret);
694 #endif /* USDT2 */
695 return ret;
696 JNI_END
697
698 #ifndef USDT2
699 DT_RETURN_MARK_DECL(Throw, jint);
700 #else /* USDT2 */
701 DT_RETURN_MARK_DECL(Throw, jint
702 , HOTSPOT_JNI_THROW_RETURN(_ret_ref));
703 #endif /* USDT2 */
704
705 JNI_ENTRY(jint, jni_Throw(JNIEnv *env, jthrowable obj))
706 JNIWrapper("Throw");
707 #ifndef USDT2
708 DTRACE_PROBE2(hotspot_jni, Throw__entry, env, obj);
709 #else /* USDT2 */
710 HOTSPOT_JNI_THROW_ENTRY(
711 env, obj);
712 #endif /* USDT2 */
713 jint ret = JNI_OK;
714 DT_RETURN_MARK(Throw, jint, (const jint&)ret);
715
716 THROW_OOP_(JNIHandles::resolve(obj), JNI_OK);
717 ShouldNotReachHere();
718 JNI_END
719
720 #ifndef USDT2
721 DT_RETURN_MARK_DECL(ThrowNew, jint);
722 #else /* USDT2 */
723 DT_RETURN_MARK_DECL(ThrowNew, jint
724 , HOTSPOT_JNI_THROWNEW_RETURN(_ret_ref));
725 #endif /* USDT2 */
726
727 JNI_ENTRY(jint, jni_ThrowNew(JNIEnv *env, jclass clazz, const char *message))
728 JNIWrapper("ThrowNew");
729 #ifndef USDT2
730 DTRACE_PROBE3(hotspot_jni, ThrowNew__entry, env, clazz, message);
731 #else /* USDT2 */
732 HOTSPOT_JNI_THROWNEW_ENTRY(
733 env, clazz, (char *) message);
734 #endif /* USDT2 */
735 jint ret = JNI_OK;
736 DT_RETURN_MARK(ThrowNew, jint, (const jint&)ret);
737
738 InstanceKlass* k = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz)));
739 Symbol* name = k->name();
740 Handle class_loader (THREAD, k->class_loader());
741 Handle protection_domain (THREAD, k->protection_domain());
742 THROW_MSG_LOADER_(name, (char *)message, class_loader, protection_domain, JNI_OK);
743 ShouldNotReachHere();
744 JNI_END
745
746
747 // JNI functions only transform a pending async exception to a synchronous
748 // exception in ExceptionOccurred and ExceptionCheck calls, since
749 // delivering an async exception in other places won't change the native
750 // code's control flow and would be harmful when native code further calls
751 // JNI functions with a pending exception. Async exception is also checked
752 // during the call, so ExceptionOccurred/ExceptionCheck won't return
753 // false but deliver the async exception at the very end during
754 // state transition.
755
756 static void jni_check_async_exceptions(JavaThread *thread) {
757 assert(thread == Thread::current(), "must be itself");
758 thread->check_and_handle_async_exceptions();
759 }
760
761 JNI_ENTRY_NO_PRESERVE(jthrowable, jni_ExceptionOccurred(JNIEnv *env))
762 JNIWrapper("ExceptionOccurred");
763 #ifndef USDT2
764 DTRACE_PROBE1(hotspot_jni, ExceptionOccurred__entry, env);
765 #else /* USDT2 */
766 HOTSPOT_JNI_EXCEPTIONOCCURRED_ENTRY(
767 env);
768 #endif /* USDT2 */
769 jni_check_async_exceptions(thread);
770 oop exception = thread->pending_exception();
771 jthrowable ret = (jthrowable) JNIHandles::make_local(env, exception);
772 #ifndef USDT2
773 DTRACE_PROBE1(hotspot_jni, ExceptionOccurred__return, ret);
774 #else /* USDT2 */
775 HOTSPOT_JNI_EXCEPTIONOCCURRED_RETURN(
776 ret);
777 #endif /* USDT2 */
778 return ret;
779 JNI_END
780
781
782 JNI_ENTRY_NO_PRESERVE(void, jni_ExceptionDescribe(JNIEnv *env))
783 JNIWrapper("ExceptionDescribe");
784 #ifndef USDT2
785 DTRACE_PROBE1(hotspot_jni, ExceptionDescribe__entry, env);
786 #else /* USDT2 */
787 HOTSPOT_JNI_EXCEPTIONDESCRIBE_ENTRY(
788 env);
789 #endif /* USDT2 */
790 if (thread->has_pending_exception()) {
791 Handle ex(thread, thread->pending_exception());
792 thread->clear_pending_exception();
793 if (ex->is_a(SystemDictionary::ThreadDeath_klass())) {
794 // Don't print anything if we are being killed.
795 } else {
796 jio_fprintf(defaultStream::error_stream(), "Exception ");
797 if (thread != NULL && thread->threadObj() != NULL) {
798 ResourceMark rm(THREAD);
799 jio_fprintf(defaultStream::error_stream(),
800 "in thread \"%s\" ", thread->get_thread_name());
801 }
802 if (ex->is_a(SystemDictionary::Throwable_klass())) {
803 JavaValue result(T_VOID);
804 JavaCalls::call_virtual(&result,
805 ex,
806 KlassHandle(THREAD,
807 SystemDictionary::Throwable_klass()),
808 vmSymbols::printStackTrace_name(),
809 vmSymbols::void_method_signature(),
810 THREAD);
811 // If an exception is thrown in the call it gets thrown away. Not much
812 // we can do with it. The native code that calls this, does not check
813 // for the exception - hence, it might still be in the thread when DestroyVM gets
814 // called, potentially causing a few asserts to trigger - since no pending exception
815 // is expected.
816 CLEAR_PENDING_EXCEPTION;
817 } else {
818 ResourceMark rm(THREAD);
819 jio_fprintf(defaultStream::error_stream(),
820 ". Uncaught exception of type %s.",
821 ex->klass()->external_name());
822 }
823 }
824 }
825 #ifndef USDT2
826 DTRACE_PROBE(hotspot_jni, ExceptionDescribe__return);
827 #else /* USDT2 */
828 HOTSPOT_JNI_EXCEPTIONDESCRIBE_RETURN(
829 );
830 #endif /* USDT2 */
831 JNI_END
832
833
834 JNI_QUICK_ENTRY(void, jni_ExceptionClear(JNIEnv *env))
835 JNIWrapper("ExceptionClear");
836 #ifndef USDT2
837 DTRACE_PROBE1(hotspot_jni, ExceptionClear__entry, env);
838 #else /* USDT2 */
839 HOTSPOT_JNI_EXCEPTIONCLEAR_ENTRY(
840 env);
841 #endif /* USDT2 */
842
843 // The jni code might be using this API to clear java thrown exception.
844 // So just mark jvmti thread exception state as exception caught.
845 JvmtiThreadState *state = JavaThread::current()->jvmti_thread_state();
846 if (state != NULL && state->is_exception_detected()) {
847 state->set_exception_caught();
848 }
849 thread->clear_pending_exception();
850 #ifndef USDT2
851 DTRACE_PROBE(hotspot_jni, ExceptionClear__return);
852 #else /* USDT2 */
853 HOTSPOT_JNI_EXCEPTIONCLEAR_RETURN(
854 );
855 #endif /* USDT2 */
856 JNI_END
857
858
859 JNI_ENTRY(void, jni_FatalError(JNIEnv *env, const char *msg))
860 JNIWrapper("FatalError");
861 #ifndef USDT2
862 DTRACE_PROBE2(hotspot_jni, FatalError__entry, env, msg);
863 #else /* USDT2 */
864 HOTSPOT_JNI_FATALERROR_ENTRY(
865 env, (char *) msg);
866 #endif /* USDT2 */
867 tty->print_cr("FATAL ERROR in native method: %s", msg);
868 thread->print_stack();
869 os::abort(); // Dump core and abort
870 JNI_END
871
872
873 JNI_ENTRY(jint, jni_PushLocalFrame(JNIEnv *env, jint capacity))
874 JNIWrapper("PushLocalFrame");
875 #ifndef USDT2
876 DTRACE_PROBE2(hotspot_jni, PushLocalFrame__entry, env, capacity);
877 #else /* USDT2 */
878 HOTSPOT_JNI_PUSHLOCALFRAME_ENTRY(
879 env, capacity);
880 #endif /* USDT2 */
881 //%note jni_11
882 if (capacity < 0 || capacity > MAX_REASONABLE_LOCAL_CAPACITY) {
883 #ifndef USDT2
884 DTRACE_PROBE1(hotspot_jni, PushLocalFrame__return, JNI_ERR);
885 #else /* USDT2 */
886 HOTSPOT_JNI_PUSHLOCALFRAME_RETURN(
887 (uint32_t)JNI_ERR);
888 #endif /* USDT2 */
889 return JNI_ERR;
890 }
891 JNIHandleBlock* old_handles = thread->active_handles();
892 JNIHandleBlock* new_handles = JNIHandleBlock::allocate_block(thread);
893 assert(new_handles != NULL, "should not be NULL");
894 new_handles->set_pop_frame_link(old_handles);
895 thread->set_active_handles(new_handles);
896 jint ret = JNI_OK;
897 #ifndef USDT2
898 DTRACE_PROBE1(hotspot_jni, PushLocalFrame__return, ret);
899 #else /* USDT2 */
900 HOTSPOT_JNI_PUSHLOCALFRAME_RETURN(
901 ret);
902 #endif /* USDT2 */
903 return ret;
904 JNI_END
905
906
907 JNI_ENTRY(jobject, jni_PopLocalFrame(JNIEnv *env, jobject result))
908 JNIWrapper("PopLocalFrame");
909 #ifndef USDT2
910 DTRACE_PROBE2(hotspot_jni, PopLocalFrame__entry, env, result);
911 #else /* USDT2 */
912 HOTSPOT_JNI_POPLOCALFRAME_ENTRY(
913 env, result);
914 #endif /* USDT2 */
915 //%note jni_11
916 Handle result_handle(thread, JNIHandles::resolve(result));
917 JNIHandleBlock* old_handles = thread->active_handles();
918 JNIHandleBlock* new_handles = old_handles->pop_frame_link();
919 if (new_handles != NULL) {
920 // As a sanity check we only release the handle blocks if the pop_frame_link is not NULL.
921 // This way code will still work if PopLocalFrame is called without a corresponding
922 // PushLocalFrame call. Note that we set the pop_frame_link to NULL explicitly, otherwise
923 // the release_block call will release the blocks.
924 thread->set_active_handles(new_handles);
925 old_handles->set_pop_frame_link(NULL); // clear link we won't release new_handles below
926 JNIHandleBlock::release_block(old_handles, thread); // may block
927 result = JNIHandles::make_local(thread, result_handle());
928 }
929 #ifndef USDT2
930 DTRACE_PROBE1(hotspot_jni, PopLocalFrame__return, result);
931 #else /* USDT2 */
932 HOTSPOT_JNI_POPLOCALFRAME_RETURN(
933 result);
934 #endif /* USDT2 */
935 return result;
936 JNI_END
937
938
939 JNI_ENTRY(jobject, jni_NewGlobalRef(JNIEnv *env, jobject ref))
940 JNIWrapper("NewGlobalRef");
941 #ifndef USDT2
942 DTRACE_PROBE2(hotspot_jni, NewGlobalRef__entry, env, ref);
943 #else /* USDT2 */
944 HOTSPOT_JNI_NEWGLOBALREF_ENTRY(
945 env, ref);
946 #endif /* USDT2 */
947 Handle ref_handle(thread, JNIHandles::resolve(ref));
948 jobject ret = JNIHandles::make_global(ref_handle);
949 #ifndef USDT2
950 DTRACE_PROBE1(hotspot_jni, NewGlobalRef__return, ret);
951 #else /* USDT2 */
952 HOTSPOT_JNI_NEWGLOBALREF_RETURN(
953 ret);
954 #endif /* USDT2 */
955 return ret;
956 JNI_END
957
958 // Must be JNI_ENTRY (with HandleMark)
959 JNI_ENTRY_NO_PRESERVE(void, jni_DeleteGlobalRef(JNIEnv *env, jobject ref))
960 JNIWrapper("DeleteGlobalRef");
961 #ifndef USDT2
962 DTRACE_PROBE2(hotspot_jni, DeleteGlobalRef__entry, env, ref);
963 #else /* USDT2 */
964 HOTSPOT_JNI_DELETEGLOBALREF_ENTRY(
965 env, ref);
966 #endif /* USDT2 */
967 JNIHandles::destroy_global(ref);
968 #ifndef USDT2
969 DTRACE_PROBE(hotspot_jni, DeleteGlobalRef__return);
970 #else /* USDT2 */
971 HOTSPOT_JNI_DELETEGLOBALREF_RETURN(
972 );
973 #endif /* USDT2 */
974 JNI_END
975
976 JNI_QUICK_ENTRY(void, jni_DeleteLocalRef(JNIEnv *env, jobject obj))
977 JNIWrapper("DeleteLocalRef");
978 #ifndef USDT2
979 DTRACE_PROBE2(hotspot_jni, DeleteLocalRef__entry, env, obj);
980 #else /* USDT2 */
981 HOTSPOT_JNI_DELETELOCALREF_ENTRY(
982 env, obj);
983 #endif /* USDT2 */
984 JNIHandles::destroy_local(obj);
985 #ifndef USDT2
986 DTRACE_PROBE(hotspot_jni, DeleteLocalRef__return);
987 #else /* USDT2 */
988 HOTSPOT_JNI_DELETELOCALREF_RETURN(
989 );
990 #endif /* USDT2 */
991 JNI_END
992
993 JNI_QUICK_ENTRY(jboolean, jni_IsSameObject(JNIEnv *env, jobject r1, jobject r2))
994 JNIWrapper("IsSameObject");
995 #ifndef USDT2
996 DTRACE_PROBE3(hotspot_jni, IsSameObject__entry, env, r1, r2);
997 #else /* USDT2 */
998 HOTSPOT_JNI_ISSAMEOBJECT_ENTRY(
999 env, r1, r2);
1000 #endif /* USDT2 */
1001 oop a = JNIHandles::resolve(r1);
1002 oop b = JNIHandles::resolve(r2);
1003 jboolean ret = (a == b) ? JNI_TRUE : JNI_FALSE;
1004 #ifndef USDT2
1005 DTRACE_PROBE1(hotspot_jni, IsSameObject__return, ret);
1006 #else /* USDT2 */
1007 HOTSPOT_JNI_ISSAMEOBJECT_RETURN(
1008 ret);
1009 #endif /* USDT2 */
1010 return ret;
1011 JNI_END
1012
1013
1014 JNI_ENTRY(jobject, jni_NewLocalRef(JNIEnv *env, jobject ref))
1015 JNIWrapper("NewLocalRef");
1016 #ifndef USDT2
1017 DTRACE_PROBE2(hotspot_jni, NewLocalRef__entry, env, ref);
1018 #else /* USDT2 */
1019 HOTSPOT_JNI_NEWLOCALREF_ENTRY(
1020 env, ref);
1021 #endif /* USDT2 */
1022 jobject ret = JNIHandles::make_local(env, JNIHandles::resolve(ref));
1023 #ifndef USDT2
1024 DTRACE_PROBE1(hotspot_jni, NewLocalRef__return, ret);
1025 #else /* USDT2 */
1026 HOTSPOT_JNI_NEWLOCALREF_RETURN(
1027 ret);
1028 #endif /* USDT2 */
1029 return ret;
1030 JNI_END
1031
1032 JNI_LEAF(jint, jni_EnsureLocalCapacity(JNIEnv *env, jint capacity))
1033 JNIWrapper("EnsureLocalCapacity");
1034 #ifndef USDT2
1035 DTRACE_PROBE2(hotspot_jni, EnsureLocalCapacity__entry, env, capacity);
1036 #else /* USDT2 */
1037 HOTSPOT_JNI_ENSURELOCALCAPACITY_ENTRY(
1038 env, capacity);
1039 #endif /* USDT2 */
1040 jint ret;
1041 if (capacity >= 0 && capacity <= MAX_REASONABLE_LOCAL_CAPACITY) {
1042 ret = JNI_OK;
1043 } else {
1044 ret = JNI_ERR;
1045 }
1046 #ifndef USDT2
1047 DTRACE_PROBE1(hotspot_jni, EnsureLocalCapacity__return, ret);
1048 #else /* USDT2 */
1049 HOTSPOT_JNI_ENSURELOCALCAPACITY_RETURN(
1050 ret);
1051 #endif /* USDT2 */
1052 return ret;
1053 JNI_END
1054
1055 // Return the Handle Type
1056 JNI_LEAF(jobjectRefType, jni_GetObjectRefType(JNIEnv *env, jobject obj))
1057 JNIWrapper("GetObjectRefType");
1058 #ifndef USDT2
1059 DTRACE_PROBE2(hotspot_jni, GetObjectRefType__entry, env, obj);
1060 #else /* USDT2 */
1061 HOTSPOT_JNI_GETOBJECTREFTYPE_ENTRY(
1062 env, obj);
1063 #endif /* USDT2 */
1064 jobjectRefType ret;
1065 if (JNIHandles::is_local_handle(thread, obj) ||
1066 JNIHandles::is_frame_handle(thread, obj))
1067 ret = JNILocalRefType;
1068 else if (JNIHandles::is_global_handle(obj))
1069 ret = JNIGlobalRefType;
1070 else if (JNIHandles::is_weak_global_handle(obj))
1071 ret = JNIWeakGlobalRefType;
1072 else
1073 ret = JNIInvalidRefType;
1074 #ifndef USDT2
1075 DTRACE_PROBE1(hotspot_jni, GetObjectRefType__return, ret);
1076 #else /* USDT2 */
1077 HOTSPOT_JNI_GETOBJECTREFTYPE_RETURN(
1078 (void *) ret);
1079 #endif /* USDT2 */
1080 return ret;
1081 JNI_END
1082
1083
1084 class JNI_ArgumentPusher : public SignatureIterator {
1085 protected:
1086 JavaCallArguments* _arguments;
1087
1088 virtual void get_bool () = 0;
1089 virtual void get_char () = 0;
1090 virtual void get_short () = 0;
1091 virtual void get_byte () = 0;
1092 virtual void get_int () = 0;
1093 virtual void get_long () = 0;
1094 virtual void get_float () = 0;
1095 virtual void get_double () = 0;
1096 virtual void get_object () = 0;
1097
1098 JNI_ArgumentPusher(Symbol* signature) : SignatureIterator(signature) {
1099 this->_return_type = T_ILLEGAL;
1100 _arguments = NULL;
1101 }
1102
1103 public:
1104 virtual void iterate( uint64_t fingerprint ) = 0;
1105
1106 void set_java_argument_object(JavaCallArguments *arguments) { _arguments = arguments; }
1107
1108 inline void do_bool() { if (!is_return_type()) get_bool(); }
1109 inline void do_char() { if (!is_return_type()) get_char(); }
1110 inline void do_short() { if (!is_return_type()) get_short(); }
1111 inline void do_byte() { if (!is_return_type()) get_byte(); }
1112 inline void do_int() { if (!is_return_type()) get_int(); }
1113 inline void do_long() { if (!is_return_type()) get_long(); }
1114 inline void do_float() { if (!is_return_type()) get_float(); }
1115 inline void do_double() { if (!is_return_type()) get_double(); }
1116 inline void do_object(int begin, int end) { if (!is_return_type()) get_object(); }
1117 inline void do_array(int begin, int end) { if (!is_return_type()) get_object(); } // do_array uses get_object -- there is no get_array
1118 inline void do_void() { }
1119
1120 JavaCallArguments* arguments() { return _arguments; }
1121 void push_receiver(Handle h) { _arguments->push_oop(h); }
1122 };
1123
1124
1125 class JNI_ArgumentPusherVaArg : public JNI_ArgumentPusher {
1126 protected:
1127 va_list _ap;
1128
1129 inline void get_bool() { _arguments->push_int(va_arg(_ap, jint)); } // bool is coerced to int when using va_arg
1130 inline void get_char() { _arguments->push_int(va_arg(_ap, jint)); } // char is coerced to int when using va_arg
1131 inline void get_short() { _arguments->push_int(va_arg(_ap, jint)); } // short is coerced to int when using va_arg
1132 inline void get_byte() { _arguments->push_int(va_arg(_ap, jint)); } // byte is coerced to int when using va_arg
1133 inline void get_int() { _arguments->push_int(va_arg(_ap, jint)); }
1134
1135 // each of these paths is exercized by the various jck Call[Static,Nonvirtual,][Void,Int,..]Method[A,V,] tests
1136
1137 inline void get_long() { _arguments->push_long(va_arg(_ap, jlong)); }
1138 inline void get_float() { _arguments->push_float((jfloat)va_arg(_ap, jdouble)); } // float is coerced to double w/ va_arg
1139 inline void get_double() { _arguments->push_double(va_arg(_ap, jdouble)); }
1140 inline void get_object() { jobject l = va_arg(_ap, jobject);
1141 _arguments->push_oop(Handle((oop *)l, false)); }
1142
1143 inline void set_ap(va_list rap) {
1144 #ifdef va_copy
1145 va_copy(_ap, rap);
1146 #elif defined (__va_copy)
1147 __va_copy(_ap, rap);
1148 #else
1149 _ap = rap;
1150 #endif
1151 }
1152
1153 public:
1154 JNI_ArgumentPusherVaArg(Symbol* signature, va_list rap)
1155 : JNI_ArgumentPusher(signature) {
1156 set_ap(rap);
1157 }
1158 JNI_ArgumentPusherVaArg(jmethodID method_id, va_list rap)
1159 : JNI_ArgumentPusher(Method::resolve_jmethod_id(method_id)->signature()) {
1160 set_ap(rap);
1161 }
1162
1163 // Optimized path if we have the bitvector form of signature
1164 void iterate( uint64_t fingerprint ) {
1165 if ( fingerprint == UCONST64(-1) ) SignatureIterator::iterate();// Must be too many arguments
1166 else {
1167 _return_type = (BasicType)((fingerprint >> static_feature_size) &
1168 result_feature_mask);
1169
1170 assert(fingerprint, "Fingerprint should not be 0");
1171 fingerprint = fingerprint >> (static_feature_size + result_feature_size);
1172 while ( 1 ) {
1173 switch ( fingerprint & parameter_feature_mask ) {
1174 case bool_parm:
1175 case char_parm:
1176 case short_parm:
1177 case byte_parm:
1178 case int_parm:
1179 get_int();
1180 break;
1181 case obj_parm:
1182 get_object();
1183 break;
1184 case long_parm:
1185 get_long();
1186 break;
1187 case float_parm:
1188 get_float();
1189 break;
1190 case double_parm:
1191 get_double();
1192 break;
1193 case done_parm:
1194 return;
1195 break;
1196 default:
1197 ShouldNotReachHere();
1198 break;
1199 }
1200 fingerprint >>= parameter_feature_size;
1201 }
1202 }
1203 }
1204 };
1205
1206
1207 class JNI_ArgumentPusherArray : public JNI_ArgumentPusher {
1208 protected:
1209 const jvalue *_ap;
1210
1211 inline void get_bool() { _arguments->push_int((jint)(_ap++)->z); }
1212 inline void get_char() { _arguments->push_int((jint)(_ap++)->c); }
1213 inline void get_short() { _arguments->push_int((jint)(_ap++)->s); }
1214 inline void get_byte() { _arguments->push_int((jint)(_ap++)->b); }
1215 inline void get_int() { _arguments->push_int((jint)(_ap++)->i); }
1216
1217 inline void get_long() { _arguments->push_long((_ap++)->j); }
1218 inline void get_float() { _arguments->push_float((_ap++)->f); }
1219 inline void get_double() { _arguments->push_double((_ap++)->d);}
1220 inline void get_object() { _arguments->push_oop(Handle((oop *)(_ap++)->l, false)); }
1221
1222 inline void set_ap(const jvalue *rap) { _ap = rap; }
1223
1224 public:
1225 JNI_ArgumentPusherArray(Symbol* signature, const jvalue *rap)
1226 : JNI_ArgumentPusher(signature) {
1227 set_ap(rap);
1228 }
1229 JNI_ArgumentPusherArray(jmethodID method_id, const jvalue *rap)
1230 : JNI_ArgumentPusher(Method::resolve_jmethod_id(method_id)->signature()) {
1231 set_ap(rap);
1232 }
1233
1234 // Optimized path if we have the bitvector form of signature
1235 void iterate( uint64_t fingerprint ) {
1236 if ( fingerprint == UCONST64(-1) ) SignatureIterator::iterate(); // Must be too many arguments
1237 else {
1238 _return_type = (BasicType)((fingerprint >> static_feature_size) &
1239 result_feature_mask);
1240 assert(fingerprint, "Fingerprint should not be 0");
1241 fingerprint = fingerprint >> (static_feature_size + result_feature_size);
1242 while ( 1 ) {
1243 switch ( fingerprint & parameter_feature_mask ) {
1244 case bool_parm:
1245 get_bool();
1246 break;
1247 case char_parm:
1248 get_char();
1249 break;
1250 case short_parm:
1251 get_short();
1252 break;
1253 case byte_parm:
1254 get_byte();
1255 break;
1256 case int_parm:
1257 get_int();
1258 break;
1259 case obj_parm:
1260 get_object();
1261 break;
1262 case long_parm:
1263 get_long();
1264 break;
1265 case float_parm:
1266 get_float();
1267 break;
1268 case double_parm:
1269 get_double();
1270 break;
1271 case done_parm:
1272 return;
1273 break;
1274 default:
1275 ShouldNotReachHere();
1276 break;
1277 }
1278 fingerprint >>= parameter_feature_size;
1279 }
1280 }
1281 }
1282 };
1283
1284
1285 enum JNICallType {
1286 JNI_STATIC,
1287 JNI_VIRTUAL,
1288 JNI_NONVIRTUAL
1289 };
1290
1291
1292
1293 static void jni_invoke_static(JNIEnv *env, JavaValue* result, jobject receiver, JNICallType call_type, jmethodID method_id, JNI_ArgumentPusher *args, TRAPS) {
1294 methodHandle method(THREAD, Method::resolve_jmethod_id(method_id));
1295
1296 // Create object to hold arguments for the JavaCall, and associate it with
1297 // the jni parser
1298 ResourceMark rm(THREAD);
1299 int number_of_parameters = method->size_of_parameters();
1300 JavaCallArguments java_args(number_of_parameters);
1301 args->set_java_argument_object(&java_args);
1302
1303 assert(method->is_static(), "method should be static");
1304
1305 // Fill out JavaCallArguments object
1306 args->iterate( Fingerprinter(method).fingerprint() );
1307 // Initialize result type
1308 result->set_type(args->get_ret_type());
1309
1310 // Invoke the method. Result is returned as oop.
1311 JavaCalls::call(result, method, &java_args, CHECK);
1312
1313 // Convert result
1314 if (result->get_type() == T_OBJECT || result->get_type() == T_ARRAY) {
1315 result->set_jobject(JNIHandles::make_local(env, (oop) result->get_jobject()));
1316 }
1317 }
1318
1319
1320 static void jni_invoke_nonstatic(JNIEnv *env, JavaValue* result, jobject receiver, JNICallType call_type, jmethodID method_id, JNI_ArgumentPusher *args, TRAPS) {
1321 oop recv = JNIHandles::resolve(receiver);
1322 if (recv == NULL) {
1323 THROW(vmSymbols::java_lang_NullPointerException());
1324 }
1325 Handle h_recv(THREAD, recv);
1326
1327 int number_of_parameters;
1328 Method* selected_method;
1329 {
1330 Method* m = Method::resolve_jmethod_id(method_id);
1331 number_of_parameters = m->size_of_parameters();
1332 Klass* holder = m->method_holder();
1333 if (!(holder)->is_interface()) {
1334 // non-interface call -- for that little speed boost, don't handlize
1335 debug_only(No_Safepoint_Verifier nosafepoint;)
1336 if (call_type == JNI_VIRTUAL) {
1337 // jni_GetMethodID makes sure class is linked and initialized
1338 // so m should have a valid vtable index.
1339 int vtbl_index = m->vtable_index();
1340 if (vtbl_index != Method::nonvirtual_vtable_index) {
1341 Klass* k = h_recv->klass();
1342 // k might be an arrayKlassOop but all vtables start at
1343 // the same place. The cast is to avoid virtual call and assertion.
1344 InstanceKlass *ik = (InstanceKlass*)k;
1345 selected_method = ik->method_at_vtable(vtbl_index);
1346 } else {
1347 // final method
1348 selected_method = m;
1349 }
1350 } else {
1351 // JNI_NONVIRTUAL call
1352 selected_method = m;
1353 }
1354 } else {
1355 // interface call
1356 KlassHandle h_holder(THREAD, holder);
1357
1358 int itbl_index = m->cached_itable_index();
1359 if (itbl_index == -1) {
1360 itbl_index = klassItable::compute_itable_index(m);
1361 m->set_cached_itable_index(itbl_index);
1362 // the above may have grabbed a lock, 'm' and anything non-handlized can't be used again
1363 }
1364 Klass* k = h_recv->klass();
1365 selected_method = InstanceKlass::cast(k)->method_at_itable(h_holder(), itbl_index, CHECK);
1366 }
1367 }
1368
1369 methodHandle method(THREAD, selected_method);
1370
1371 // Create object to hold arguments for the JavaCall, and associate it with
1372 // the jni parser
1373 ResourceMark rm(THREAD);
1374 JavaCallArguments java_args(number_of_parameters);
1375 args->set_java_argument_object(&java_args);
1376
1377 // handle arguments
1378 assert(!method->is_static(), "method should not be static");
1379 args->push_receiver(h_recv); // Push jobject handle
1380
1381 // Fill out JavaCallArguments object
1382 args->iterate( Fingerprinter(method).fingerprint() );
1383 // Initialize result type
1384 result->set_type(args->get_ret_type());
1385
1386 // Invoke the method. Result is returned as oop.
1387 JavaCalls::call(result, method, &java_args, CHECK);
1388
1389 // Convert result
1390 if (result->get_type() == T_OBJECT || result->get_type() == T_ARRAY) {
1391 result->set_jobject(JNIHandles::make_local(env, (oop) result->get_jobject()));
1392 }
1393 }
1394
1395
1396 static instanceOop alloc_object(jclass clazz, TRAPS) {
1397 KlassHandle k(THREAD, java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz)));
1398 k()->check_valid_for_instantiation(false, CHECK_NULL);
1399 InstanceKlass::cast(k())->initialize(CHECK_NULL);
1400 instanceOop ih = InstanceKlass::cast(k())->allocate_instance(THREAD);
1401 return ih;
1402 }
1403
1404 #ifndef USDT2
1405 DT_RETURN_MARK_DECL(AllocObject, jobject);
1406 #else /* USDT2 */
1407 DT_RETURN_MARK_DECL(AllocObject, jobject
1408 , HOTSPOT_JNI_ALLOCOBJECT_RETURN(_ret_ref));
1409 #endif /* USDT2 */
1410
1411 JNI_ENTRY(jobject, jni_AllocObject(JNIEnv *env, jclass clazz))
1412 JNIWrapper("AllocObject");
1413
1414 #ifndef USDT2
1415 DTRACE_PROBE2(hotspot_jni, AllocObject__entry, env, clazz);
1416 #else /* USDT2 */
1417 HOTSPOT_JNI_ALLOCOBJECT_ENTRY(
1418 env, clazz);
1419 #endif /* USDT2 */
1420 jobject ret = NULL;
1421 DT_RETURN_MARK(AllocObject, jobject, (const jobject&)ret);
1422
1423 instanceOop i = alloc_object(clazz, CHECK_NULL);
1424 ret = JNIHandles::make_local(env, i);
1425 return ret;
1426 JNI_END
1427
1428 #ifndef USDT2
1429 DT_RETURN_MARK_DECL(NewObjectA, jobject);
1430 #else /* USDT2 */
1431 DT_RETURN_MARK_DECL(NewObjectA, jobject
1432 , HOTSPOT_JNI_NEWOBJECTA_RETURN(_ret_ref));
1433 #endif /* USDT2 */
1434
1435 JNI_ENTRY(jobject, jni_NewObjectA(JNIEnv *env, jclass clazz, jmethodID methodID, const jvalue *args))
1436 JNIWrapper("NewObjectA");
1437 #ifndef USDT2
1438 DTRACE_PROBE3(hotspot_jni, NewObjectA__entry, env, clazz, methodID);
1439 #else /* USDT2 */
1440 HOTSPOT_JNI_NEWOBJECTA_ENTRY(
1441 env, clazz, (uintptr_t) methodID);
1442 #endif /* USDT2 */
1443 jobject obj = NULL;
1444 DT_RETURN_MARK(NewObjectA, jobject, (const jobject)obj);
1445
1446 instanceOop i = alloc_object(clazz, CHECK_NULL);
1447 obj = JNIHandles::make_local(env, i);
1448 JavaValue jvalue(T_VOID);
1449 JNI_ArgumentPusherArray ap(methodID, args);
1450 jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK_NULL);
1451 return obj;
1452 JNI_END
1453
1454 #ifndef USDT2
1455 DT_RETURN_MARK_DECL(NewObjectV, jobject);
1456 #else /* USDT2 */
1457 DT_RETURN_MARK_DECL(NewObjectV, jobject
1458 , HOTSPOT_JNI_NEWOBJECTV_RETURN(_ret_ref));
1459 #endif /* USDT2 */
1460
1461 JNI_ENTRY(jobject, jni_NewObjectV(JNIEnv *env, jclass clazz, jmethodID methodID, va_list args))
1462 JNIWrapper("NewObjectV");
1463 #ifndef USDT2
1464 DTRACE_PROBE3(hotspot_jni, NewObjectV__entry, env, clazz, methodID);
1465 #else /* USDT2 */
1466 HOTSPOT_JNI_NEWOBJECTV_ENTRY(
1467 env, clazz, (uintptr_t) methodID);
1468 #endif /* USDT2 */
1469 jobject obj = NULL;
1470 DT_RETURN_MARK(NewObjectV, jobject, (const jobject&)obj);
1471
1472 instanceOop i = alloc_object(clazz, CHECK_NULL);
1473 obj = JNIHandles::make_local(env, i);
1474 JavaValue jvalue(T_VOID);
1475 JNI_ArgumentPusherVaArg ap(methodID, args);
1476 jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK_NULL);
1477 return obj;
1478 JNI_END
1479
1480 #ifndef USDT2
1481 DT_RETURN_MARK_DECL(NewObject, jobject);
1482 #else /* USDT2 */
1483 DT_RETURN_MARK_DECL(NewObject, jobject
1484 , HOTSPOT_JNI_NEWOBJECT_RETURN(_ret_ref));
1485 #endif /* USDT2 */
1486
1487 JNI_ENTRY(jobject, jni_NewObject(JNIEnv *env, jclass clazz, jmethodID methodID, ...))
1488 JNIWrapper("NewObject");
1489 #ifndef USDT2
1490 DTRACE_PROBE3(hotspot_jni, NewObject__entry, env, clazz, methodID);
1491 #else /* USDT2 */
1492 HOTSPOT_JNI_NEWOBJECT_ENTRY(
1493 env, clazz, (uintptr_t) methodID);
1494 #endif /* USDT2 */
1495 jobject obj = NULL;
1496 DT_RETURN_MARK(NewObject, jobject, (const jobject&)obj);
1497
1498 instanceOop i = alloc_object(clazz, CHECK_NULL);
1499 obj = JNIHandles::make_local(env, i);
1500 va_list args;
1501 va_start(args, methodID);
1502 JavaValue jvalue(T_VOID);
1503 JNI_ArgumentPusherVaArg ap(methodID, args);
1504 jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK_NULL);
1505 va_end(args);
1506 return obj;
1507 JNI_END
1508
1509
1510 JNI_ENTRY(jclass, jni_GetObjectClass(JNIEnv *env, jobject obj))
1511 JNIWrapper("GetObjectClass");
1512 #ifndef USDT2
1513 DTRACE_PROBE2(hotspot_jni, GetObjectClass__entry, env, obj);
1514 #else /* USDT2 */
1515 HOTSPOT_JNI_GETOBJECTCLASS_ENTRY(
1516 env, obj);
1517 #endif /* USDT2 */
1518 Klass* k = JNIHandles::resolve_non_null(obj)->klass();
1519 jclass ret =
1520 (jclass) JNIHandles::make_local(env, k->java_mirror());
1521 #ifndef USDT2
1522 DTRACE_PROBE1(hotspot_jni, GetObjectClass__return, ret);
1523 #else /* USDT2 */
1524 HOTSPOT_JNI_GETOBJECTCLASS_RETURN(
1525 ret);
1526 #endif /* USDT2 */
1527 return ret;
1528 JNI_END
1529
1530 JNI_QUICK_ENTRY(jboolean, jni_IsInstanceOf(JNIEnv *env, jobject obj, jclass clazz))
1531 JNIWrapper("IsInstanceOf");
1532 #ifndef USDT2
1533 DTRACE_PROBE3(hotspot_jni, IsInstanceOf__entry, env, obj, clazz);
1534 #else /* USDT2 */
1535 HOTSPOT_JNI_ISINSTANCEOF_ENTRY(
1536 env, obj, clazz);
1537 #endif /* USDT2 */
1538 jboolean ret = JNI_TRUE;
1539 if (obj != NULL) {
1540 ret = JNI_FALSE;
1541 Klass* k = java_lang_Class::as_Klass(
1542 JNIHandles::resolve_non_null(clazz));
1543 if (k != NULL) {
1544 ret = JNIHandles::resolve_non_null(obj)->is_a(k) ? JNI_TRUE : JNI_FALSE;
1545 }
1546 }
1547 #ifndef USDT2
1548 DTRACE_PROBE1(hotspot_jni, IsInstanceOf__return, ret);
1549 #else /* USDT2 */
1550 HOTSPOT_JNI_ISINSTANCEOF_RETURN(
1551 ret);
1552 #endif /* USDT2 */
1553 return ret;
1554 JNI_END
1555
1556
1557 static jmethodID get_method_id(JNIEnv *env, jclass clazz, const char *name_str,
1558 const char *sig, bool is_static, TRAPS) {
1559 // %%%% This code should probably just call into a method in the LinkResolver
1560 //
1561 // The class should have been loaded (we have an instance of the class
1562 // passed in) so the method and signature should already be in the symbol
1563 // table. If they're not there, the method doesn't exist.
1564 const char *name_to_probe = (name_str == NULL)
1565 ? vmSymbols::object_initializer_name()->as_C_string()
1566 : name_str;
1567 TempNewSymbol name = SymbolTable::probe(name_to_probe, (int)strlen(name_to_probe));
1568 TempNewSymbol signature = SymbolTable::probe(sig, (int)strlen(sig));
1569
1570 if (name == NULL || signature == NULL) {
1571 THROW_MSG_0(vmSymbols::java_lang_NoSuchMethodError(), name_str);
1572 }
1573
1574 // Throw a NoSuchMethodError exception if we have an instance of a
1575 // primitive java.lang.Class
1576 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(clazz))) {
1577 THROW_MSG_0(vmSymbols::java_lang_NoSuchMethodError(), name_str);
1578 }
1579
1580 KlassHandle klass(THREAD,
1581 java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz)));
1582
1583 // Make sure class is linked and initialized before handing id's out to
1584 // Method*s.
1585 klass()->initialize(CHECK_NULL);
1586
1587 Method* m;
1588 if (name == vmSymbols::object_initializer_name() ||
1589 name == vmSymbols::class_initializer_name()) {
1590 // Never search superclasses for constructors
1591 if (klass->oop_is_instance()) {
1592 m = InstanceKlass::cast(klass())->find_method(name, signature);
1593 } else {
1594 m = NULL;
1595 }
1596 } else {
1597 m = klass->lookup_method(name, signature);
1598 // Look up interfaces
1599 if (m == NULL && klass->oop_is_instance()) {
1600 m = InstanceKlass::cast(klass())->lookup_method_in_all_interfaces(name,
1601 signature);
1602 }
1603 }
1604 if (m == NULL || (m->is_static() != is_static)) {
1605 THROW_MSG_0(vmSymbols::java_lang_NoSuchMethodError(), name_str);
1606 }
1607 return m->jmethod_id();
1608 }
1609
1610
1611 JNI_ENTRY(jmethodID, jni_GetMethodID(JNIEnv *env, jclass clazz,
1612 const char *name, const char *sig))
1613 JNIWrapper("GetMethodID");
1614 #ifndef USDT2
1615 DTRACE_PROBE4(hotspot_jni, GetMethodID__entry, env, clazz, name, sig);
1616 #else /* USDT2 */
1617 HOTSPOT_JNI_GETMETHODID_ENTRY(
1618 env, clazz, (char *) name, (char *) sig);
1619 #endif /* USDT2 */
1620 jmethodID ret = get_method_id(env, clazz, name, sig, false, thread);
1621 #ifndef USDT2
1622 DTRACE_PROBE1(hotspot_jni, GetMethodID__return, ret);
1623 #else /* USDT2 */
1624 HOTSPOT_JNI_GETMETHODID_RETURN(
1625 (uintptr_t) ret);
1626 #endif /* USDT2 */
1627 return ret;
1628 JNI_END
1629
1630
1631 JNI_ENTRY(jmethodID, jni_GetStaticMethodID(JNIEnv *env, jclass clazz,
1632 const char *name, const char *sig))
1633 JNIWrapper("GetStaticMethodID");
1634 #ifndef USDT2
1635 DTRACE_PROBE4(hotspot_jni, GetStaticMethodID__entry, env, clazz, name, sig);
1636 #else /* USDT2 */
1637 HOTSPOT_JNI_GETSTATICMETHODID_ENTRY(
1638 env, (char *) clazz, (char *) name, (char *)sig);
1639 #endif /* USDT2 */
1640 jmethodID ret = get_method_id(env, clazz, name, sig, true, thread);
1641 #ifndef USDT2
1642 DTRACE_PROBE1(hotspot_jni, GetStaticMethodID__return, ret);
1643 #else /* USDT2 */
1644 HOTSPOT_JNI_GETSTATICMETHODID_RETURN(
1645 (uintptr_t) ret);
1646 #endif /* USDT2 */
1647 return ret;
1648 JNI_END
1649
1650
1651
1652 //
1653 // Calling Methods
1654 //
1655
1656 #ifndef USDT2
1657 #define DEFINE_CALLMETHOD(ResultType, Result, Tag) \
1658 \
1659 DT_RETURN_MARK_DECL_FOR(Result, Call##Result##Method, ResultType);\
1660 DT_RETURN_MARK_DECL_FOR(Result, Call##Result##MethodV, ResultType);\
1661 DT_RETURN_MARK_DECL_FOR(Result, Call##Result##MethodA, ResultType);\
1662 \
1663 JNI_ENTRY(ResultType, \
1664 jni_Call##Result##Method(JNIEnv *env, jobject obj, jmethodID methodID, ...)) \
1665 JNIWrapper("Call" XSTR(Result) "Method"); \
1666 \
1667 DTRACE_PROBE3(hotspot_jni, Call##Result##Method__entry, env, obj, methodID); \
1668 ResultType ret = 0;\
1669 DT_RETURN_MARK_FOR(Result, Call##Result##Method, ResultType, \
1670 (const ResultType&)ret);\
1671 \
1672 va_list args; \
1673 va_start(args, methodID); \
1674 JavaValue jvalue(Tag); \
1675 JNI_ArgumentPusherVaArg ap(methodID, args); \
1676 jni_invoke_nonstatic(env, &jvalue, obj, JNI_VIRTUAL, methodID, &ap, CHECK_0); \
1677 va_end(args); \
1678 ret = jvalue.get_##ResultType(); \
1679 return ret;\
1680 JNI_END \
1681 \
1682 \
1683 JNI_ENTRY(ResultType, \
1684 jni_Call##Result##MethodV(JNIEnv *env, jobject obj, jmethodID methodID, va_list args)) \
1685 JNIWrapper("Call" XSTR(Result) "MethodV"); \
1686 \
1687 DTRACE_PROBE3(hotspot_jni, Call##Result##MethodV__entry, env, obj, methodID); \
1688 ResultType ret = 0;\
1689 DT_RETURN_MARK_FOR(Result, Call##Result##MethodV, ResultType, \
1690 (const ResultType&)ret);\
1691 \
1692 JavaValue jvalue(Tag); \
1693 JNI_ArgumentPusherVaArg ap(methodID, args); \
1694 jni_invoke_nonstatic(env, &jvalue, obj, JNI_VIRTUAL, methodID, &ap, CHECK_0); \
1695 ret = jvalue.get_##ResultType(); \
1696 return ret;\
1697 JNI_END \
1698 \
1699 \
1700 JNI_ENTRY(ResultType, \
1701 jni_Call##Result##MethodA(JNIEnv *env, jobject obj, jmethodID methodID, const jvalue *args)) \
1702 JNIWrapper("Call" XSTR(Result) "MethodA"); \
1703 DTRACE_PROBE3(hotspot_jni, Call##Result##MethodA__entry, env, obj, methodID); \
1704 ResultType ret = 0;\
1705 DT_RETURN_MARK_FOR(Result, Call##Result##MethodA, ResultType, \
1706 (const ResultType&)ret);\
1707 \
1708 JavaValue jvalue(Tag); \
1709 JNI_ArgumentPusherArray ap(methodID, args); \
1710 jni_invoke_nonstatic(env, &jvalue, obj, JNI_VIRTUAL, methodID, &ap, CHECK_0); \
1711 ret = jvalue.get_##ResultType(); \
1712 return ret;\
1713 JNI_END
1714
1715 // the runtime type of subword integral basic types is integer
1716 DEFINE_CALLMETHOD(jboolean, Boolean, T_BOOLEAN)
1717 DEFINE_CALLMETHOD(jbyte, Byte, T_BYTE)
1718 DEFINE_CALLMETHOD(jchar, Char, T_CHAR)
1719 DEFINE_CALLMETHOD(jshort, Short, T_SHORT)
1720
1721 DEFINE_CALLMETHOD(jobject, Object, T_OBJECT)
1722 DEFINE_CALLMETHOD(jint, Int, T_INT)
1723 DEFINE_CALLMETHOD(jlong, Long, T_LONG)
1724 DEFINE_CALLMETHOD(jfloat, Float, T_FLOAT)
1725 DEFINE_CALLMETHOD(jdouble, Double, T_DOUBLE)
1726
1727 DT_VOID_RETURN_MARK_DECL(CallVoidMethod);
1728 DT_VOID_RETURN_MARK_DECL(CallVoidMethodV);
1729 DT_VOID_RETURN_MARK_DECL(CallVoidMethodA);
1730
1731 #else /* USDT2 */
1732
1733 #define DEFINE_CALLMETHOD(ResultType, Result, Tag \
1734 , EntryProbe, ReturnProbe) \
1735 \
1736 DT_RETURN_MARK_DECL_FOR(Result, Call##Result##Method, ResultType \
1737 , ReturnProbe); \
1738 \
1739 JNI_ENTRY(ResultType, \
1740 jni_Call##Result##Method(JNIEnv *env, jobject obj, jmethodID methodID, ...)) \
1741 JNIWrapper("Call" XSTR(Result) "Method"); \
1742 \
1743 EntryProbe; \
1744 ResultType ret = 0;\
1745 DT_RETURN_MARK_FOR(Result, Call##Result##Method, ResultType, \
1746 (const ResultType&)ret);\
1747 \
1748 va_list args; \
1749 va_start(args, methodID); \
1750 JavaValue jvalue(Tag); \
1751 JNI_ArgumentPusherVaArg ap(methodID, args); \
1752 jni_invoke_nonstatic(env, &jvalue, obj, JNI_VIRTUAL, methodID, &ap, CHECK_0); \
1753 va_end(args); \
1754 ret = jvalue.get_##ResultType(); \
1755 return ret;\
1756 JNI_END
1757
1758 // the runtime type of subword integral basic types is integer
1759 DEFINE_CALLMETHOD(jboolean, Boolean, T_BOOLEAN
1760 , HOTSPOT_JNI_CALLBOOLEANMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1761 HOTSPOT_JNI_CALLBOOLEANMETHOD_RETURN(_ret_ref))
1762 DEFINE_CALLMETHOD(jbyte, Byte, T_BYTE
1763 , HOTSPOT_JNI_CALLBYTEMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1764 HOTSPOT_JNI_CALLBYTEMETHOD_RETURN(_ret_ref))
1765 DEFINE_CALLMETHOD(jchar, Char, T_CHAR
1766 , HOTSPOT_JNI_CALLCHARMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1767 HOTSPOT_JNI_CALLCHARMETHOD_RETURN(_ret_ref))
1768 DEFINE_CALLMETHOD(jshort, Short, T_SHORT
1769 , HOTSPOT_JNI_CALLSHORTMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1770 HOTSPOT_JNI_CALLSHORTMETHOD_RETURN(_ret_ref))
1771
1772 DEFINE_CALLMETHOD(jobject, Object, T_OBJECT
1773 , HOTSPOT_JNI_CALLOBJECTMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1774 HOTSPOT_JNI_CALLOBJECTMETHOD_RETURN(_ret_ref))
1775 DEFINE_CALLMETHOD(jint, Int, T_INT,
1776 HOTSPOT_JNI_CALLINTMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1777 HOTSPOT_JNI_CALLINTMETHOD_RETURN(_ret_ref))
1778 DEFINE_CALLMETHOD(jlong, Long, T_LONG
1779 , HOTSPOT_JNI_CALLLONGMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1780 HOTSPOT_JNI_CALLLONGMETHOD_RETURN(_ret_ref))
1781 // Float and double probes don't return value because dtrace doesn't currently support it
1782 DEFINE_CALLMETHOD(jfloat, Float, T_FLOAT
1783 , HOTSPOT_JNI_CALLFLOATMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1784 HOTSPOT_JNI_CALLFLOATMETHOD_RETURN())
1785 DEFINE_CALLMETHOD(jdouble, Double, T_DOUBLE
1786 , HOTSPOT_JNI_CALLDOUBLEMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1787 HOTSPOT_JNI_CALLDOUBLEMETHOD_RETURN())
1788
1789 #define DEFINE_CALLMETHODV(ResultType, Result, Tag \
1790 , EntryProbe, ReturnProbe) \
1791 \
1792 DT_RETURN_MARK_DECL_FOR(Result, Call##Result##MethodV, ResultType \
1793 , ReturnProbe); \
1794 \
1795 JNI_ENTRY(ResultType, \
1796 jni_Call##Result##MethodV(JNIEnv *env, jobject obj, jmethodID methodID, va_list args)) \
1797 JNIWrapper("Call" XSTR(Result) "MethodV"); \
1798 \
1799 EntryProbe;\
1800 ResultType ret = 0;\
1801 DT_RETURN_MARK_FOR(Result, Call##Result##MethodV, ResultType, \
1802 (const ResultType&)ret);\
1803 \
1804 JavaValue jvalue(Tag); \
1805 JNI_ArgumentPusherVaArg ap(methodID, args); \
1806 jni_invoke_nonstatic(env, &jvalue, obj, JNI_VIRTUAL, methodID, &ap, CHECK_0); \
1807 ret = jvalue.get_##ResultType(); \
1808 return ret;\
1809 JNI_END
1810
1811 // the runtime type of subword integral basic types is integer
1812 DEFINE_CALLMETHODV(jboolean, Boolean, T_BOOLEAN
1813 , HOTSPOT_JNI_CALLBOOLEANMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1814 HOTSPOT_JNI_CALLBOOLEANMETHOD_RETURN(_ret_ref))
1815 DEFINE_CALLMETHODV(jbyte, Byte, T_BYTE
1816 , HOTSPOT_JNI_CALLBYTEMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1817 HOTSPOT_JNI_CALLBYTEMETHOD_RETURN(_ret_ref))
1818 DEFINE_CALLMETHODV(jchar, Char, T_CHAR
1819 , HOTSPOT_JNI_CALLCHARMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1820 HOTSPOT_JNI_CALLCHARMETHOD_RETURN(_ret_ref))
1821 DEFINE_CALLMETHODV(jshort, Short, T_SHORT
1822 , HOTSPOT_JNI_CALLSHORTMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1823 HOTSPOT_JNI_CALLSHORTMETHOD_RETURN(_ret_ref))
1824
1825 DEFINE_CALLMETHODV(jobject, Object, T_OBJECT
1826 , HOTSPOT_JNI_CALLOBJECTMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1827 HOTSPOT_JNI_CALLOBJECTMETHOD_RETURN(_ret_ref))
1828 DEFINE_CALLMETHODV(jint, Int, T_INT,
1829 HOTSPOT_JNI_CALLINTMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1830 HOTSPOT_JNI_CALLINTMETHOD_RETURN(_ret_ref))
1831 DEFINE_CALLMETHODV(jlong, Long, T_LONG
1832 , HOTSPOT_JNI_CALLLONGMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1833 HOTSPOT_JNI_CALLLONGMETHOD_RETURN(_ret_ref))
1834 // Float and double probes don't return value because dtrace doesn't currently support it
1835 DEFINE_CALLMETHODV(jfloat, Float, T_FLOAT
1836 , HOTSPOT_JNI_CALLFLOATMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1837 HOTSPOT_JNI_CALLFLOATMETHOD_RETURN())
1838 DEFINE_CALLMETHODV(jdouble, Double, T_DOUBLE
1839 , HOTSPOT_JNI_CALLDOUBLEMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1840 HOTSPOT_JNI_CALLDOUBLEMETHOD_RETURN())
1841
1842 #define DEFINE_CALLMETHODA(ResultType, Result, Tag \
1843 , EntryProbe, ReturnProbe) \
1844 \
1845 DT_RETURN_MARK_DECL_FOR(Result, Call##Result##MethodA, ResultType \
1846 , ReturnProbe); \
1847 \
1848 JNI_ENTRY(ResultType, \
1849 jni_Call##Result##MethodA(JNIEnv *env, jobject obj, jmethodID methodID, const jvalue *args)) \
1850 JNIWrapper("Call" XSTR(Result) "MethodA"); \
1851 EntryProbe; \
1852 ResultType ret = 0;\
1853 DT_RETURN_MARK_FOR(Result, Call##Result##MethodA, ResultType, \
1854 (const ResultType&)ret);\
1855 \
1856 JavaValue jvalue(Tag); \
1857 JNI_ArgumentPusherArray ap(methodID, args); \
1858 jni_invoke_nonstatic(env, &jvalue, obj, JNI_VIRTUAL, methodID, &ap, CHECK_0); \
1859 ret = jvalue.get_##ResultType(); \
1860 return ret;\
1861 JNI_END
1862
1863 // the runtime type of subword integral basic types is integer
1864 DEFINE_CALLMETHODA(jboolean, Boolean, T_BOOLEAN
1865 , HOTSPOT_JNI_CALLBOOLEANMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1866 HOTSPOT_JNI_CALLBOOLEANMETHOD_RETURN(_ret_ref))
1867 DEFINE_CALLMETHODA(jbyte, Byte, T_BYTE
1868 , HOTSPOT_JNI_CALLBYTEMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1869 HOTSPOT_JNI_CALLBYTEMETHOD_RETURN(_ret_ref))
1870 DEFINE_CALLMETHODA(jchar, Char, T_CHAR
1871 , HOTSPOT_JNI_CALLCHARMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1872 HOTSPOT_JNI_CALLCHARMETHOD_RETURN(_ret_ref))
1873 DEFINE_CALLMETHODA(jshort, Short, T_SHORT
1874 , HOTSPOT_JNI_CALLSHORTMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1875 HOTSPOT_JNI_CALLSHORTMETHOD_RETURN(_ret_ref))
1876
1877 DEFINE_CALLMETHODA(jobject, Object, T_OBJECT
1878 , HOTSPOT_JNI_CALLOBJECTMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1879 HOTSPOT_JNI_CALLOBJECTMETHOD_RETURN(_ret_ref))
1880 DEFINE_CALLMETHODA(jint, Int, T_INT,
1881 HOTSPOT_JNI_CALLINTMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1882 HOTSPOT_JNI_CALLINTMETHOD_RETURN(_ret_ref))
1883 DEFINE_CALLMETHODA(jlong, Long, T_LONG
1884 , HOTSPOT_JNI_CALLLONGMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1885 HOTSPOT_JNI_CALLLONGMETHOD_RETURN(_ret_ref))
1886 // Float and double probes don't return value because dtrace doesn't currently support it
1887 DEFINE_CALLMETHODA(jfloat, Float, T_FLOAT
1888 , HOTSPOT_JNI_CALLFLOATMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1889 HOTSPOT_JNI_CALLFLOATMETHOD_RETURN())
1890 DEFINE_CALLMETHODA(jdouble, Double, T_DOUBLE
1891 , HOTSPOT_JNI_CALLDOUBLEMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1892 HOTSPOT_JNI_CALLDOUBLEMETHOD_RETURN())
1893
1894 DT_VOID_RETURN_MARK_DECL(CallVoidMethod, HOTSPOT_JNI_CALLVOIDMETHOD_RETURN());
1895 DT_VOID_RETURN_MARK_DECL(CallVoidMethodV, HOTSPOT_JNI_CALLVOIDMETHODV_RETURN());
1896 DT_VOID_RETURN_MARK_DECL(CallVoidMethodA, HOTSPOT_JNI_CALLVOIDMETHODA_RETURN());
1897
1898 #endif /* USDT2 */
1899
1900 JNI_ENTRY(void, jni_CallVoidMethod(JNIEnv *env, jobject obj, jmethodID methodID, ...))
1901 JNIWrapper("CallVoidMethod");
1902 #ifndef USDT2
1903 DTRACE_PROBE3(hotspot_jni, CallVoidMethod__entry, env, obj, methodID);
1904 #else /* USDT2 */
1905 HOTSPOT_JNI_CALLVOIDMETHOD_ENTRY(
1906 env, obj, (uintptr_t) methodID);
1907 #endif /* USDT2 */
1908 DT_VOID_RETURN_MARK(CallVoidMethod);
1909
1910 va_list args;
1911 va_start(args, methodID);
1912 JavaValue jvalue(T_VOID);
1913 JNI_ArgumentPusherVaArg ap(methodID, args);
1914 jni_invoke_nonstatic(env, &jvalue, obj, JNI_VIRTUAL, methodID, &ap, CHECK);
1915 va_end(args);
1916 JNI_END
1917
1918
1919 JNI_ENTRY(void, jni_CallVoidMethodV(JNIEnv *env, jobject obj, jmethodID methodID, va_list args))
1920 JNIWrapper("CallVoidMethodV");
1921 #ifndef USDT2
1922 DTRACE_PROBE3(hotspot_jni, CallVoidMethodV__entry, env, obj, methodID);
1923 #else /* USDT2 */
1924 HOTSPOT_JNI_CALLVOIDMETHODV_ENTRY(
1925 env, obj, (uintptr_t) methodID);
1926 #endif /* USDT2 */
1927 DT_VOID_RETURN_MARK(CallVoidMethodV);
1928
1929 JavaValue jvalue(T_VOID);
1930 JNI_ArgumentPusherVaArg ap(methodID, args);
1931 jni_invoke_nonstatic(env, &jvalue, obj, JNI_VIRTUAL, methodID, &ap, CHECK);
1932 JNI_END
1933
1934
1935 JNI_ENTRY(void, jni_CallVoidMethodA(JNIEnv *env, jobject obj, jmethodID methodID, const jvalue *args))
1936 JNIWrapper("CallVoidMethodA");
1937 #ifndef USDT2
1938 DTRACE_PROBE3(hotspot_jni, CallVoidMethodA__entry, env, obj, methodID);
1939 #else /* USDT2 */
1940 HOTSPOT_JNI_CALLVOIDMETHODA_ENTRY(
1941 env, obj, (uintptr_t) methodID);
1942 #endif /* USDT2 */
1943 DT_VOID_RETURN_MARK(CallVoidMethodA);
1944
1945 JavaValue jvalue(T_VOID);
1946 JNI_ArgumentPusherArray ap(methodID, args);
1947 jni_invoke_nonstatic(env, &jvalue, obj, JNI_VIRTUAL, methodID, &ap, CHECK);
1948 JNI_END
1949
1950
1951 #ifndef USDT2
1952 #define DEFINE_CALLNONVIRTUALMETHOD(ResultType, Result, Tag) \
1953 \
1954 DT_RETURN_MARK_DECL_FOR(Result, CallNonvirtual##Result##Method, ResultType);\
1955 DT_RETURN_MARK_DECL_FOR(Result, CallNonvirtual##Result##MethodV, ResultType);\
1956 DT_RETURN_MARK_DECL_FOR(Result, CallNonvirtual##Result##MethodA, ResultType);\
1957 \
1958 JNI_ENTRY(ResultType, \
1959 jni_CallNonvirtual##Result##Method(JNIEnv *env, jobject obj, jclass cls, jmethodID methodID, ...)) \
1960 JNIWrapper("CallNonvitual" XSTR(Result) "Method"); \
1961 \
1962 DTRACE_PROBE4(hotspot_jni, CallNonvirtual##Result##Method__entry, env, obj, cls, methodID);\
1963 ResultType ret;\
1964 DT_RETURN_MARK_FOR(Result, CallNonvirtual##Result##Method, ResultType, \
1965 (const ResultType&)ret);\
1966 \
1967 va_list args; \
1968 va_start(args, methodID); \
1969 JavaValue jvalue(Tag); \
1970 JNI_ArgumentPusherVaArg ap(methodID, args); \
1971 jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK_0); \
1972 va_end(args); \
1973 ret = jvalue.get_##ResultType(); \
1974 return ret;\
1975 JNI_END \
1976 \
1977 JNI_ENTRY(ResultType, \
1978 jni_CallNonvirtual##Result##MethodV(JNIEnv *env, jobject obj, jclass cls, jmethodID methodID, va_list args)) \
1979 JNIWrapper("CallNonvitual" XSTR(Result) "#MethodV"); \
1980 DTRACE_PROBE4(hotspot_jni, CallNonvirtual##Result##MethodV__entry, env, obj, cls, methodID);\
1981 ResultType ret;\
1982 DT_RETURN_MARK_FOR(Result, CallNonvirtual##Result##MethodV, ResultType, \
1983 (const ResultType&)ret);\
1984 \
1985 JavaValue jvalue(Tag); \
1986 JNI_ArgumentPusherVaArg ap(methodID, args); \
1987 jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK_0); \
1988 ret = jvalue.get_##ResultType(); \
1989 return ret;\
1990 JNI_END \
1991 \
1992 JNI_ENTRY(ResultType, \
1993 jni_CallNonvirtual##Result##MethodA(JNIEnv *env, jobject obj, jclass cls, jmethodID methodID, const jvalue *args)) \
1994 JNIWrapper("CallNonvitual" XSTR(Result) "MethodA"); \
1995 DTRACE_PROBE4(hotspot_jni, CallNonvirtual##Result##MethodA__entry, env, obj, cls, methodID);\
1996 ResultType ret;\
1997 DT_RETURN_MARK_FOR(Result, CallNonvirtual##Result##MethodA, ResultType, \
1998 (const ResultType&)ret);\
1999 \
2000 JavaValue jvalue(Tag); \
2001 JNI_ArgumentPusherArray ap(methodID, args); \
2002 jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK_0); \
2003 ret = jvalue.get_##ResultType(); \
2004 return ret;\
2005 JNI_END
2006
2007 // the runtime type of subword integral basic types is integer
2008 DEFINE_CALLNONVIRTUALMETHOD(jboolean, Boolean, T_BOOLEAN)
2009 DEFINE_CALLNONVIRTUALMETHOD(jbyte, Byte, T_BYTE)
2010 DEFINE_CALLNONVIRTUALMETHOD(jchar, Char, T_CHAR)
2011 DEFINE_CALLNONVIRTUALMETHOD(jshort, Short, T_SHORT)
2012
2013 DEFINE_CALLNONVIRTUALMETHOD(jobject, Object, T_OBJECT)
2014 DEFINE_CALLNONVIRTUALMETHOD(jint, Int, T_INT)
2015 DEFINE_CALLNONVIRTUALMETHOD(jlong, Long, T_LONG)
2016 DEFINE_CALLNONVIRTUALMETHOD(jfloat, Float, T_FLOAT)
2017 DEFINE_CALLNONVIRTUALMETHOD(jdouble, Double, T_DOUBLE)
2018
2019
2020 DT_VOID_RETURN_MARK_DECL(CallNonvirtualVoidMethod);
2021 DT_VOID_RETURN_MARK_DECL(CallNonvirtualVoidMethodV);
2022 DT_VOID_RETURN_MARK_DECL(CallNonvirtualVoidMethodA);
2023
2024 #else /* USDT2 */
2025
2026 #define DEFINE_CALLNONVIRTUALMETHOD(ResultType, Result, Tag \
2027 , EntryProbe, ReturnProbe) \
2028 \
2029 DT_RETURN_MARK_DECL_FOR(Result, CallNonvirtual##Result##Method, ResultType \
2030 , ReturnProbe);\
2031 \
2032 JNI_ENTRY(ResultType, \
2033 jni_CallNonvirtual##Result##Method(JNIEnv *env, jobject obj, jclass cls, jmethodID methodID, ...)) \
2034 JNIWrapper("CallNonvitual" XSTR(Result) "Method"); \
2035 \
2036 EntryProbe;\
2037 ResultType ret;\
2038 DT_RETURN_MARK_FOR(Result, CallNonvirtual##Result##Method, ResultType, \
2039 (const ResultType&)ret);\
2040 \
2041 va_list args; \
2042 va_start(args, methodID); \
2043 JavaValue jvalue(Tag); \
2044 JNI_ArgumentPusherVaArg ap(methodID, args); \
2045 jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK_0); \
2046 va_end(args); \
2047 ret = jvalue.get_##ResultType(); \
2048 return ret;\
2049 JNI_END
2050
2051 // the runtime type of subword integral basic types is integer
2052 DEFINE_CALLNONVIRTUALMETHOD(jboolean, Boolean, T_BOOLEAN
2053 , HOTSPOT_JNI_CALLNONVIRTUALBOOLEANMETHOD_ENTRY(env, obj, cls, (uintptr_t)methodID),
2054 HOTSPOT_JNI_CALLNONVIRTUALBOOLEANMETHOD_RETURN(_ret_ref))
2055 DEFINE_CALLNONVIRTUALMETHOD(jbyte, Byte, T_BYTE
2056 , HOTSPOT_JNI_CALLNONVIRTUALBYTEMETHOD_ENTRY(env, obj, cls, (uintptr_t)methodID),
2057 HOTSPOT_JNI_CALLNONVIRTUALBYTEMETHOD_RETURN(_ret_ref))
2058 DEFINE_CALLNONVIRTUALMETHOD(jchar, Char, T_CHAR
2059 , HOTSPOT_JNI_CALLNONVIRTUALCHARMETHOD_ENTRY(env, obj, cls, (uintptr_t)methodID),
2060 HOTSPOT_JNI_CALLNONVIRTUALCHARMETHOD_RETURN(_ret_ref))
2061 DEFINE_CALLNONVIRTUALMETHOD(jshort, Short, T_SHORT
2062 , HOTSPOT_JNI_CALLNONVIRTUALSHORTMETHOD_ENTRY(env, obj, cls, (uintptr_t)methodID),
2063 HOTSPOT_JNI_CALLNONVIRTUALSHORTMETHOD_RETURN(_ret_ref))
2064
2065 DEFINE_CALLNONVIRTUALMETHOD(jobject, Object, T_OBJECT
2066 , HOTSPOT_JNI_CALLNONVIRTUALOBJECTMETHOD_ENTRY(env, obj, cls, (uintptr_t)methodID),
2067 HOTSPOT_JNI_CALLNONVIRTUALOBJECTMETHOD_RETURN(_ret_ref))
2068 DEFINE_CALLNONVIRTUALMETHOD(jint, Int, T_INT
2069 , HOTSPOT_JNI_CALLNONVIRTUALINTMETHOD_ENTRY(env, obj, cls, (uintptr_t)methodID),
2070 HOTSPOT_JNI_CALLNONVIRTUALINTMETHOD_RETURN(_ret_ref))
2071 DEFINE_CALLNONVIRTUALMETHOD(jlong, Long, T_LONG
2072 , HOTSPOT_JNI_CALLNONVIRTUALLONGMETHOD_ENTRY(env, obj, cls, (uintptr_t)methodID),
2073 // Float and double probes don't return value because dtrace doesn't currently support it
2074 HOTSPOT_JNI_CALLNONVIRTUALLONGMETHOD_RETURN(_ret_ref))
2075 DEFINE_CALLNONVIRTUALMETHOD(jfloat, Float, T_FLOAT
2076 , HOTSPOT_JNI_CALLNONVIRTUALFLOATMETHOD_ENTRY(env, obj, cls, (uintptr_t)methodID),
2077 HOTSPOT_JNI_CALLNONVIRTUALFLOATMETHOD_RETURN())
2078 DEFINE_CALLNONVIRTUALMETHOD(jdouble, Double, T_DOUBLE
2079 , HOTSPOT_JNI_CALLNONVIRTUALDOUBLEMETHOD_ENTRY(env, obj, cls, (uintptr_t)methodID),
2080 HOTSPOT_JNI_CALLNONVIRTUALDOUBLEMETHOD_RETURN())
2081
2082 #define DEFINE_CALLNONVIRTUALMETHODV(ResultType, Result, Tag \
2083 , EntryProbe, ReturnProbe) \
2084 \
2085 DT_RETURN_MARK_DECL_FOR(Result, CallNonvirtual##Result##MethodV, ResultType \
2086 , ReturnProbe);\
2087 \
2088 JNI_ENTRY(ResultType, \
2089 jni_CallNonvirtual##Result##MethodV(JNIEnv *env, jobject obj, jclass cls, jmethodID methodID, va_list args)) \
2090 JNIWrapper("CallNonvitual" XSTR(Result) "MethodV"); \
2091 \
2092 EntryProbe;\
2093 ResultType ret;\
2094 DT_RETURN_MARK_FOR(Result, CallNonvirtual##Result##MethodV, ResultType, \
2095 (const ResultType&)ret);\
2096 \
2097 JavaValue jvalue(Tag); \
2098 JNI_ArgumentPusherVaArg ap(methodID, args); \
2099 jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK_0); \
2100 ret = jvalue.get_##ResultType(); \
2101 return ret;\
2102 JNI_END
2103
2104 // the runtime type of subword integral basic types is integer
2105 DEFINE_CALLNONVIRTUALMETHODV(jboolean, Boolean, T_BOOLEAN
2106 , HOTSPOT_JNI_CALLNONVIRTUALBOOLEANMETHODV_ENTRY(env, obj, cls, (uintptr_t)methodID),
2107 HOTSPOT_JNI_CALLNONVIRTUALBOOLEANMETHODV_RETURN(_ret_ref))
2108 DEFINE_CALLNONVIRTUALMETHODV(jbyte, Byte, T_BYTE
2109 , HOTSPOT_JNI_CALLNONVIRTUALBYTEMETHODV_ENTRY(env, obj, cls, (uintptr_t)methodID),
2110 HOTSPOT_JNI_CALLNONVIRTUALBYTEMETHODV_RETURN(_ret_ref))
2111 DEFINE_CALLNONVIRTUALMETHODV(jchar, Char, T_CHAR
2112 , HOTSPOT_JNI_CALLNONVIRTUALCHARMETHODV_ENTRY(env, obj, cls, (uintptr_t)methodID),
2113 HOTSPOT_JNI_CALLNONVIRTUALCHARMETHODV_RETURN(_ret_ref))
2114 DEFINE_CALLNONVIRTUALMETHODV(jshort, Short, T_SHORT
2115 , HOTSPOT_JNI_CALLNONVIRTUALSHORTMETHODV_ENTRY(env, obj, cls, (uintptr_t)methodID),
2116 HOTSPOT_JNI_CALLNONVIRTUALSHORTMETHODV_RETURN(_ret_ref))
2117
2118 DEFINE_CALLNONVIRTUALMETHODV(jobject, Object, T_OBJECT
2119 , HOTSPOT_JNI_CALLNONVIRTUALOBJECTMETHODV_ENTRY(env, obj, cls, (uintptr_t)methodID),
2120 HOTSPOT_JNI_CALLNONVIRTUALOBJECTMETHODV_RETURN(_ret_ref))
2121 DEFINE_CALLNONVIRTUALMETHODV(jint, Int, T_INT
2122 , HOTSPOT_JNI_CALLNONVIRTUALINTMETHODV_ENTRY(env, obj, cls, (uintptr_t)methodID),
2123 HOTSPOT_JNI_CALLNONVIRTUALINTMETHODV_RETURN(_ret_ref))
2124 DEFINE_CALLNONVIRTUALMETHODV(jlong, Long, T_LONG
2125 , HOTSPOT_JNI_CALLNONVIRTUALLONGMETHODV_ENTRY(env, obj, cls, (uintptr_t)methodID),
2126 // Float and double probes don't return value because dtrace doesn't currently support it
2127 HOTSPOT_JNI_CALLNONVIRTUALLONGMETHODV_RETURN(_ret_ref))
2128 DEFINE_CALLNONVIRTUALMETHODV(jfloat, Float, T_FLOAT
2129 , HOTSPOT_JNI_CALLNONVIRTUALFLOATMETHODV_ENTRY(env, obj, cls, (uintptr_t)methodID),
2130 HOTSPOT_JNI_CALLNONVIRTUALFLOATMETHODV_RETURN())
2131 DEFINE_CALLNONVIRTUALMETHODV(jdouble, Double, T_DOUBLE
2132 , HOTSPOT_JNI_CALLNONVIRTUALDOUBLEMETHODV_ENTRY(env, obj, cls, (uintptr_t)methodID),
2133 HOTSPOT_JNI_CALLNONVIRTUALDOUBLEMETHODV_RETURN())
2134
2135 #define DEFINE_CALLNONVIRTUALMETHODA(ResultType, Result, Tag \
2136 , EntryProbe, ReturnProbe) \
2137 \
2138 DT_RETURN_MARK_DECL_FOR(Result, CallNonvirtual##Result##MethodA, ResultType \
2139 , ReturnProbe);\
2140 \
2141 JNI_ENTRY(ResultType, \
2142 jni_CallNonvirtual##Result##MethodA(JNIEnv *env, jobject obj, jclass cls, jmethodID methodID, const jvalue *args)) \
2143 JNIWrapper("CallNonvitual" XSTR(Result) "MethodA"); \
2144 \
2145 EntryProbe;\
2146 ResultType ret;\
2147 DT_RETURN_MARK_FOR(Result, CallNonvirtual##Result##MethodA, ResultType, \
2148 (const ResultType&)ret);\
2149 \
2150 JavaValue jvalue(Tag); \
2151 JNI_ArgumentPusherArray ap(methodID, args); \
2152 jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK_0); \
2153 ret = jvalue.get_##ResultType(); \
2154 return ret;\
2155 JNI_END
2156
2157 // the runtime type of subword integral basic types is integer
2158 DEFINE_CALLNONVIRTUALMETHODA(jboolean, Boolean, T_BOOLEAN
2159 , HOTSPOT_JNI_CALLNONVIRTUALBOOLEANMETHODA_ENTRY(env, obj, cls, (uintptr_t)methodID),
2160 HOTSPOT_JNI_CALLNONVIRTUALBOOLEANMETHODA_RETURN(_ret_ref))
2161 DEFINE_CALLNONVIRTUALMETHODA(jbyte, Byte, T_BYTE
2162 , HOTSPOT_JNI_CALLNONVIRTUALBYTEMETHODA_ENTRY(env, obj, cls, (uintptr_t)methodID),
2163 HOTSPOT_JNI_CALLNONVIRTUALBYTEMETHODA_RETURN(_ret_ref))
2164 DEFINE_CALLNONVIRTUALMETHODA(jchar, Char, T_CHAR
2165 , HOTSPOT_JNI_CALLNONVIRTUALCHARMETHODA_ENTRY(env, obj, cls, (uintptr_t)methodID),
2166 HOTSPOT_JNI_CALLNONVIRTUALCHARMETHODA_RETURN(_ret_ref))
2167 DEFINE_CALLNONVIRTUALMETHODA(jshort, Short, T_SHORT
2168 , HOTSPOT_JNI_CALLNONVIRTUALSHORTMETHODA_ENTRY(env, obj, cls, (uintptr_t)methodID),
2169 HOTSPOT_JNI_CALLNONVIRTUALSHORTMETHODA_RETURN(_ret_ref))
2170
2171 DEFINE_CALLNONVIRTUALMETHODA(jobject, Object, T_OBJECT
2172 , HOTSPOT_JNI_CALLNONVIRTUALOBJECTMETHODA_ENTRY(env, obj, cls, (uintptr_t)methodID),
2173 HOTSPOT_JNI_CALLNONVIRTUALOBJECTMETHODA_RETURN(_ret_ref))
2174 DEFINE_CALLNONVIRTUALMETHODA(jint, Int, T_INT
2175 , HOTSPOT_JNI_CALLNONVIRTUALINTMETHODA_ENTRY(env, obj, cls, (uintptr_t)methodID),
2176 HOTSPOT_JNI_CALLNONVIRTUALINTMETHODA_RETURN(_ret_ref))
2177 DEFINE_CALLNONVIRTUALMETHODA(jlong, Long, T_LONG
2178 , HOTSPOT_JNI_CALLNONVIRTUALLONGMETHODA_ENTRY(env, obj, cls, (uintptr_t)methodID),
2179 // Float and double probes don't return value because dtrace doesn't currently support it
2180 HOTSPOT_JNI_CALLNONVIRTUALLONGMETHODA_RETURN(_ret_ref))
2181 DEFINE_CALLNONVIRTUALMETHODA(jfloat, Float, T_FLOAT
2182 , HOTSPOT_JNI_CALLNONVIRTUALFLOATMETHODA_ENTRY(env, obj, cls, (uintptr_t)methodID),
2183 HOTSPOT_JNI_CALLNONVIRTUALFLOATMETHODA_RETURN())
2184 DEFINE_CALLNONVIRTUALMETHODA(jdouble, Double, T_DOUBLE
2185 , HOTSPOT_JNI_CALLNONVIRTUALDOUBLEMETHODA_ENTRY(env, obj, cls, (uintptr_t)methodID),
2186 HOTSPOT_JNI_CALLNONVIRTUALDOUBLEMETHODA_RETURN())
2187
2188 DT_VOID_RETURN_MARK_DECL(CallNonvirtualVoidMethod
2189 , HOTSPOT_JNI_CALLNONVIRTUALVOIDMETHOD_RETURN());
2190 DT_VOID_RETURN_MARK_DECL(CallNonvirtualVoidMethodV
2191 , HOTSPOT_JNI_CALLNONVIRTUALVOIDMETHODV_RETURN());
2192 DT_VOID_RETURN_MARK_DECL(CallNonvirtualVoidMethodA
2193 , HOTSPOT_JNI_CALLNONVIRTUALVOIDMETHODA_RETURN());
2194 #endif /* USDT2 */
2195
2196 JNI_ENTRY(void, jni_CallNonvirtualVoidMethod(JNIEnv *env, jobject obj, jclass cls, jmethodID methodID, ...))
2197 JNIWrapper("CallNonvirtualVoidMethod");
2198
2199 #ifndef USDT2
2200 DTRACE_PROBE4(hotspot_jni, CallNonvirtualVoidMethod__entry,
2201 env, obj, cls, methodID);
2202 #else /* USDT2 */
2203 HOTSPOT_JNI_CALLNONVIRTUALVOIDMETHOD_ENTRY(
2204 env, obj, cls, (uintptr_t) methodID);
2205 #endif /* USDT2 */
2206 DT_VOID_RETURN_MARK(CallNonvirtualVoidMethod);
2207
2208 va_list args;
2209 va_start(args, methodID);
2210 JavaValue jvalue(T_VOID);
2211 JNI_ArgumentPusherVaArg ap(methodID, args);
2212 jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK);
2213 va_end(args);
2214 JNI_END
2215
2216
2217 JNI_ENTRY(void, jni_CallNonvirtualVoidMethodV(JNIEnv *env, jobject obj, jclass cls, jmethodID methodID, va_list args))
2218 JNIWrapper("CallNonvirtualVoidMethodV");
2219
2220 #ifndef USDT2
2221 DTRACE_PROBE4(hotspot_jni, CallNonvirtualVoidMethodV__entry,
2222 env, obj, cls, methodID);
2223 #else /* USDT2 */
2224 HOTSPOT_JNI_CALLNONVIRTUALVOIDMETHODV_ENTRY(
2225 env, obj, cls, (uintptr_t) methodID);
2226 #endif /* USDT2 */
2227 DT_VOID_RETURN_MARK(CallNonvirtualVoidMethodV);
2228
2229 JavaValue jvalue(T_VOID);
2230 JNI_ArgumentPusherVaArg ap(methodID, args);
2231 jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK);
2232 JNI_END
2233
2234
2235 JNI_ENTRY(void, jni_CallNonvirtualVoidMethodA(JNIEnv *env, jobject obj, jclass cls, jmethodID methodID, const jvalue *args))
2236 JNIWrapper("CallNonvirtualVoidMethodA");
2237 #ifndef USDT2
2238 DTRACE_PROBE4(hotspot_jni, CallNonvirtualVoidMethodA__entry,
2239 env, obj, cls, methodID);
2240 #else /* USDT2 */
2241 HOTSPOT_JNI_CALLNONVIRTUALVOIDMETHODA_ENTRY(
2242 env, obj, cls, (uintptr_t) methodID);
2243 #endif /* USDT2 */
2244 DT_VOID_RETURN_MARK(CallNonvirtualVoidMethodA);
2245 JavaValue jvalue(T_VOID);
2246 JNI_ArgumentPusherArray ap(methodID, args);
2247 jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK);
2248 JNI_END
2249
2250
2251 #ifndef USDT2
2252 #define DEFINE_CALLSTATICMETHOD(ResultType, Result, Tag) \
2253 \
2254 DT_RETURN_MARK_DECL_FOR(Result, CallStatic##Result##Method, ResultType);\
2255 DT_RETURN_MARK_DECL_FOR(Result, CallStatic##Result##MethodV, ResultType);\
2256 DT_RETURN_MARK_DECL_FOR(Result, CallStatic##Result##MethodA, ResultType);\
2257 \
2258 JNI_ENTRY(ResultType, \
2259 jni_CallStatic##Result##Method(JNIEnv *env, jclass cls, jmethodID methodID, ...)) \
2260 JNIWrapper("CallStatic" XSTR(Result) "Method"); \
2261 \
2262 DTRACE_PROBE3(hotspot_jni, CallStatic##Result##Method__entry, env, cls, methodID);\
2263 ResultType ret = 0;\
2264 DT_RETURN_MARK_FOR(Result, CallStatic##Result##Method, ResultType, \
2265 (const ResultType&)ret);\
2266 \
2267 va_list args; \
2268 va_start(args, methodID); \
2269 JavaValue jvalue(Tag); \
2270 JNI_ArgumentPusherVaArg ap(methodID, args); \
2271 jni_invoke_static(env, &jvalue, NULL, JNI_STATIC, methodID, &ap, CHECK_0); \
2272 va_end(args); \
2273 ret = jvalue.get_##ResultType(); \
2274 return ret;\
2275 JNI_END \
2276 \
2277 JNI_ENTRY(ResultType, \
2278 jni_CallStatic##Result##MethodV(JNIEnv *env, jclass cls, jmethodID methodID, va_list args)) \
2279 JNIWrapper("CallStatic" XSTR(Result) "MethodV"); \
2280 DTRACE_PROBE3(hotspot_jni, CallStatic##Result##MethodV__entry, env, cls, methodID);\
2281 ResultType ret = 0;\
2282 DT_RETURN_MARK_FOR(Result, CallStatic##Result##MethodV, ResultType, \
2283 (const ResultType&)ret);\
2284 \
2285 JavaValue jvalue(Tag); \
2286 JNI_ArgumentPusherVaArg ap(methodID, args); \
2287 jni_invoke_static(env, &jvalue, NULL, JNI_STATIC, methodID, &ap, CHECK_0); \
2288 ret = jvalue.get_##ResultType(); \
2289 return ret;\
2290 JNI_END \
2291 \
2292 JNI_ENTRY(ResultType, \
2293 jni_CallStatic##Result##MethodA(JNIEnv *env, jclass cls, jmethodID methodID, const jvalue *args)) \
2294 JNIWrapper("CallStatic" XSTR(Result) "MethodA"); \
2295 DTRACE_PROBE3(hotspot_jni, CallStatic##Result##MethodA__entry, env, cls, methodID);\
2296 ResultType ret = 0;\
2297 DT_RETURN_MARK_FOR(Result, CallStatic##Result##MethodA, ResultType, \
2298 (const ResultType&)ret);\
2299 \
2300 JavaValue jvalue(Tag); \
2301 JNI_ArgumentPusherArray ap(methodID, args); \
2302 jni_invoke_static(env, &jvalue, NULL, JNI_STATIC, methodID, &ap, CHECK_0); \
2303 ret = jvalue.get_##ResultType(); \
2304 return ret;\
2305 JNI_END
2306
2307 // the runtime type of subword integral basic types is integer
2308 DEFINE_CALLSTATICMETHOD(jboolean, Boolean, T_BOOLEAN)
2309 DEFINE_CALLSTATICMETHOD(jbyte, Byte, T_BYTE)
2310 DEFINE_CALLSTATICMETHOD(jchar, Char, T_CHAR)
2311 DEFINE_CALLSTATICMETHOD(jshort, Short, T_SHORT)
2312
2313 DEFINE_CALLSTATICMETHOD(jobject, Object, T_OBJECT)
2314 DEFINE_CALLSTATICMETHOD(jint, Int, T_INT)
2315 DEFINE_CALLSTATICMETHOD(jlong, Long, T_LONG)
2316 DEFINE_CALLSTATICMETHOD(jfloat, Float, T_FLOAT)
2317 DEFINE_CALLSTATICMETHOD(jdouble, Double, T_DOUBLE)
2318
2319
2320 DT_VOID_RETURN_MARK_DECL(CallStaticVoidMethod);
2321 DT_VOID_RETURN_MARK_DECL(CallStaticVoidMethodV);
2322 DT_VOID_RETURN_MARK_DECL(CallStaticVoidMethodA);
2323
2324 #else /* USDT2 */
2325
2326 #define DEFINE_CALLSTATICMETHOD(ResultType, Result, Tag \
2327 , EntryProbe, ResultProbe) \
2328 \
2329 DT_RETURN_MARK_DECL_FOR(Result, CallStatic##Result##Method, ResultType \
2330 , ResultProbe); \
2331 \
2332 JNI_ENTRY(ResultType, \
2333 jni_CallStatic##Result##Method(JNIEnv *env, jclass cls, jmethodID methodID, ...)) \
2334 JNIWrapper("CallStatic" XSTR(Result) "Method"); \
2335 \
2336 EntryProbe; \
2337 ResultType ret = 0;\
2338 DT_RETURN_MARK_FOR(Result, CallStatic##Result##Method, ResultType, \
2339 (const ResultType&)ret);\
2340 \
2341 va_list args; \
2342 va_start(args, methodID); \
2343 JavaValue jvalue(Tag); \
2344 JNI_ArgumentPusherVaArg ap(methodID, args); \
2345 jni_invoke_static(env, &jvalue, NULL, JNI_STATIC, methodID, &ap, CHECK_0); \
2346 va_end(args); \
2347 ret = jvalue.get_##ResultType(); \
2348 return ret;\
2349 JNI_END
2350
2351 // the runtime type of subword integral basic types is integer
2352 DEFINE_CALLSTATICMETHOD(jboolean, Boolean, T_BOOLEAN
2353 , HOTSPOT_JNI_CALLSTATICBOOLEANMETHOD_ENTRY(env, cls, (uintptr_t)methodID),
2354 HOTSPOT_JNI_CALLSTATICBOOLEANMETHOD_RETURN(_ret_ref));
2355 DEFINE_CALLSTATICMETHOD(jbyte, Byte, T_BYTE
2356 , HOTSPOT_JNI_CALLSTATICBYTEMETHOD_ENTRY(env, cls, (uintptr_t)methodID),
2357 HOTSPOT_JNI_CALLSTATICBYTEMETHOD_RETURN(_ret_ref));
2358 DEFINE_CALLSTATICMETHOD(jchar, Char, T_CHAR
2359 , HOTSPOT_JNI_CALLSTATICCHARMETHOD_ENTRY(env, cls, (uintptr_t)methodID),
2360 HOTSPOT_JNI_CALLSTATICCHARMETHOD_RETURN(_ret_ref));
2361 DEFINE_CALLSTATICMETHOD(jshort, Short, T_SHORT
2362 , HOTSPOT_JNI_CALLSTATICSHORTMETHOD_ENTRY(env, cls, (uintptr_t)methodID),
2363 HOTSPOT_JNI_CALLSTATICSHORTMETHOD_RETURN(_ret_ref));
2364
2365 DEFINE_CALLSTATICMETHOD(jobject, Object, T_OBJECT
2366 , HOTSPOT_JNI_CALLSTATICOBJECTMETHOD_ENTRY(env, cls, (uintptr_t)methodID),
2367 HOTSPOT_JNI_CALLSTATICOBJECTMETHOD_RETURN(_ret_ref));
2368 DEFINE_CALLSTATICMETHOD(jint, Int, T_INT
2369 , HOTSPOT_JNI_CALLSTATICINTMETHOD_ENTRY(env, cls, (uintptr_t)methodID),
2370 HOTSPOT_JNI_CALLSTATICINTMETHOD_RETURN(_ret_ref));
2371 DEFINE_CALLSTATICMETHOD(jlong, Long, T_LONG
2372 , HOTSPOT_JNI_CALLSTATICLONGMETHOD_ENTRY(env, cls, (uintptr_t)methodID),
2373 HOTSPOT_JNI_CALLSTATICLONGMETHOD_RETURN(_ret_ref));
2374 // Float and double probes don't return value because dtrace doesn't currently support it
2375 DEFINE_CALLSTATICMETHOD(jfloat, Float, T_FLOAT
2376 , HOTSPOT_JNI_CALLSTATICFLOATMETHOD_ENTRY(env, cls, (uintptr_t)methodID),
2377 HOTSPOT_JNI_CALLSTATICFLOATMETHOD_RETURN());
2378 DEFINE_CALLSTATICMETHOD(jdouble, Double, T_DOUBLE
2379 , HOTSPOT_JNI_CALLSTATICDOUBLEMETHOD_ENTRY(env, cls, (uintptr_t)methodID),
2380 HOTSPOT_JNI_CALLSTATICDOUBLEMETHOD_RETURN());
2381
2382 #define DEFINE_CALLSTATICMETHODV(ResultType, Result, Tag \
2383 , EntryProbe, ResultProbe) \
2384 \
2385 DT_RETURN_MARK_DECL_FOR(Result, CallStatic##Result##MethodV, ResultType \
2386 , ResultProbe); \
2387 \
2388 JNI_ENTRY(ResultType, \
2389 jni_CallStatic##Result##MethodV(JNIEnv *env, jclass cls, jmethodID methodID, va_list args)) \
2390 JNIWrapper("CallStatic" XSTR(Result) "MethodV"); \
2391 \
2392 EntryProbe; \
2393 ResultType ret = 0;\
2394 DT_RETURN_MARK_FOR(Result, CallStatic##Result##MethodV, ResultType, \
2395 (const ResultType&)ret);\
2396 \
2397 JavaValue jvalue(Tag); \
2398 JNI_ArgumentPusherVaArg ap(methodID, args); \
2399 /* Make sure class is initialized before trying to invoke its method */ \
2400 KlassHandle k(THREAD, java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls))); \
2401 k()->initialize(CHECK_0); \
2402 jni_invoke_static(env, &jvalue, NULL, JNI_STATIC, methodID, &ap, CHECK_0); \
2403 va_end(args); \
2404 ret = jvalue.get_##ResultType(); \
2405 return ret;\
2406 JNI_END
2407
2408 // the runtime type of subword integral basic types is integer
2409 DEFINE_CALLSTATICMETHODV(jboolean, Boolean, T_BOOLEAN
2410 , HOTSPOT_JNI_CALLSTATICBOOLEANMETHODV_ENTRY(env, cls, (uintptr_t)methodID),
2411 HOTSPOT_JNI_CALLSTATICBOOLEANMETHODV_RETURN(_ret_ref));
2412 DEFINE_CALLSTATICMETHODV(jbyte, Byte, T_BYTE
2413 , HOTSPOT_JNI_CALLSTATICBYTEMETHODV_ENTRY(env, cls, (uintptr_t)methodID),
2414 HOTSPOT_JNI_CALLSTATICBYTEMETHODV_RETURN(_ret_ref));
2415 DEFINE_CALLSTATICMETHODV(jchar, Char, T_CHAR
2416 , HOTSPOT_JNI_CALLSTATICCHARMETHODV_ENTRY(env, cls, (uintptr_t)methodID),
2417 HOTSPOT_JNI_CALLSTATICCHARMETHODV_RETURN(_ret_ref));
2418 DEFINE_CALLSTATICMETHODV(jshort, Short, T_SHORT
2419 , HOTSPOT_JNI_CALLSTATICSHORTMETHODV_ENTRY(env, cls, (uintptr_t)methodID),
2420 HOTSPOT_JNI_CALLSTATICSHORTMETHODV_RETURN(_ret_ref));
2421
2422 DEFINE_CALLSTATICMETHODV(jobject, Object, T_OBJECT
2423 , HOTSPOT_JNI_CALLSTATICOBJECTMETHODV_ENTRY(env, cls, (uintptr_t)methodID),
2424 HOTSPOT_JNI_CALLSTATICOBJECTMETHODV_RETURN(_ret_ref));
2425 DEFINE_CALLSTATICMETHODV(jint, Int, T_INT
2426 , HOTSPOT_JNI_CALLSTATICINTMETHODV_ENTRY(env, cls, (uintptr_t)methodID),
2427 HOTSPOT_JNI_CALLSTATICINTMETHODV_RETURN(_ret_ref));
2428 DEFINE_CALLSTATICMETHODV(jlong, Long, T_LONG
2429 , HOTSPOT_JNI_CALLSTATICLONGMETHODV_ENTRY(env, cls, (uintptr_t)methodID),
2430 HOTSPOT_JNI_CALLSTATICLONGMETHODV_RETURN(_ret_ref));
2431 // Float and double probes don't return value because dtrace doesn't currently support it
2432 DEFINE_CALLSTATICMETHODV(jfloat, Float, T_FLOAT
2433 , HOTSPOT_JNI_CALLSTATICFLOATMETHODV_ENTRY(env, cls, (uintptr_t)methodID),
2434 HOTSPOT_JNI_CALLSTATICFLOATMETHODV_RETURN());
2435 DEFINE_CALLSTATICMETHODV(jdouble, Double, T_DOUBLE
2436 , HOTSPOT_JNI_CALLSTATICDOUBLEMETHODV_ENTRY(env, cls, (uintptr_t)methodID),
2437 HOTSPOT_JNI_CALLSTATICDOUBLEMETHODV_RETURN());
2438
2439 #define DEFINE_CALLSTATICMETHODA(ResultType, Result, Tag \
2440 , EntryProbe, ResultProbe) \
2441 \
2442 DT_RETURN_MARK_DECL_FOR(Result, CallStatic##Result##MethodA, ResultType \
2443 , ResultProbe); \
2444 \
2445 JNI_ENTRY(ResultType, \
2446 jni_CallStatic##Result##MethodA(JNIEnv *env, jclass cls, jmethodID methodID, const jvalue *args)) \
2447 JNIWrapper("CallStatic" XSTR(Result) "MethodA"); \
2448 \
2449 EntryProbe; \
2450 ResultType ret = 0;\
2451 DT_RETURN_MARK_FOR(Result, CallStatic##Result##MethodA, ResultType, \
2452 (const ResultType&)ret);\
2453 \
2454 JavaValue jvalue(Tag); \
2455 JNI_ArgumentPusherArray ap(methodID, args); \
2456 jni_invoke_static(env, &jvalue, NULL, JNI_STATIC, methodID, &ap, CHECK_0); \
2457 ret = jvalue.get_##ResultType(); \
2458 return ret;\
2459 JNI_END
2460
2461 // the runtime type of subword integral basic types is integer
2462 DEFINE_CALLSTATICMETHODA(jboolean, Boolean, T_BOOLEAN
2463 , HOTSPOT_JNI_CALLSTATICBOOLEANMETHODA_ENTRY(env, cls, (uintptr_t)methodID),
2464 HOTSPOT_JNI_CALLSTATICBOOLEANMETHODA_RETURN(_ret_ref));
2465 DEFINE_CALLSTATICMETHODA(jbyte, Byte, T_BYTE
2466 , HOTSPOT_JNI_CALLSTATICBYTEMETHODA_ENTRY(env, cls, (uintptr_t)methodID),
2467 HOTSPOT_JNI_CALLSTATICBYTEMETHODA_RETURN(_ret_ref));
2468 DEFINE_CALLSTATICMETHODA(jchar, Char, T_CHAR
2469 , HOTSPOT_JNI_CALLSTATICCHARMETHODA_ENTRY(env, cls, (uintptr_t)methodID),
2470 HOTSPOT_JNI_CALLSTATICCHARMETHODA_RETURN(_ret_ref));
2471 DEFINE_CALLSTATICMETHODA(jshort, Short, T_SHORT
2472 , HOTSPOT_JNI_CALLSTATICSHORTMETHODA_ENTRY(env, cls, (uintptr_t)methodID),
2473 HOTSPOT_JNI_CALLSTATICSHORTMETHODA_RETURN(_ret_ref));
2474
2475 DEFINE_CALLSTATICMETHODA(jobject, Object, T_OBJECT
2476 , HOTSPOT_JNI_CALLSTATICOBJECTMETHODA_ENTRY(env, cls, (uintptr_t)methodID),
2477 HOTSPOT_JNI_CALLSTATICOBJECTMETHODA_RETURN(_ret_ref));
2478 DEFINE_CALLSTATICMETHODA(jint, Int, T_INT
2479 , HOTSPOT_JNI_CALLSTATICINTMETHODA_ENTRY(env, cls, (uintptr_t)methodID),
2480 HOTSPOT_JNI_CALLSTATICINTMETHODA_RETURN(_ret_ref));
2481 DEFINE_CALLSTATICMETHODA(jlong, Long, T_LONG
2482 , HOTSPOT_JNI_CALLSTATICLONGMETHODA_ENTRY(env, cls, (uintptr_t)methodID),
2483 HOTSPOT_JNI_CALLSTATICLONGMETHODA_RETURN(_ret_ref));
2484 // Float and double probes don't return value because dtrace doesn't currently support it
2485 DEFINE_CALLSTATICMETHODA(jfloat, Float, T_FLOAT
2486 , HOTSPOT_JNI_CALLSTATICFLOATMETHODA_ENTRY(env, cls, (uintptr_t)methodID),
2487 HOTSPOT_JNI_CALLSTATICFLOATMETHODA_RETURN());
2488 DEFINE_CALLSTATICMETHODA(jdouble, Double, T_DOUBLE
2489 , HOTSPOT_JNI_CALLSTATICDOUBLEMETHODA_ENTRY(env, cls, (uintptr_t)methodID),
2490 HOTSPOT_JNI_CALLSTATICDOUBLEMETHODA_RETURN());
2491
2492 DT_VOID_RETURN_MARK_DECL(CallStaticVoidMethod
2493 , HOTSPOT_JNI_CALLSTATICVOIDMETHOD_RETURN());
2494 DT_VOID_RETURN_MARK_DECL(CallStaticVoidMethodV
2495 , HOTSPOT_JNI_CALLSTATICVOIDMETHODV_RETURN());
2496 DT_VOID_RETURN_MARK_DECL(CallStaticVoidMethodA
2497 , HOTSPOT_JNI_CALLSTATICVOIDMETHODA_RETURN());
2498 #endif /* USDT2 */
2499
2500 JNI_ENTRY(void, jni_CallStaticVoidMethod(JNIEnv *env, jclass cls, jmethodID methodID, ...))
2501 JNIWrapper("CallStaticVoidMethod");
2502 #ifndef USDT2
2503 DTRACE_PROBE3(hotspot_jni, CallStaticVoidMethod__entry, env, cls, methodID);
2504 #else /* USDT2 */
2505 HOTSPOT_JNI_CALLSTATICVOIDMETHOD_ENTRY(
2506 env, cls, (uintptr_t) methodID);
2507 #endif /* USDT2 */
2508 DT_VOID_RETURN_MARK(CallStaticVoidMethod);
2509
2510 va_list args;
2511 va_start(args, methodID);
2512 JavaValue jvalue(T_VOID);
2513 JNI_ArgumentPusherVaArg ap(methodID, args);
2514 jni_invoke_static(env, &jvalue, NULL, JNI_STATIC, methodID, &ap, CHECK);
2515 va_end(args);
2516 JNI_END
2517
2518
2519 JNI_ENTRY(void, jni_CallStaticVoidMethodV(JNIEnv *env, jclass cls, jmethodID methodID, va_list args))
2520 JNIWrapper("CallStaticVoidMethodV");
2521 #ifndef USDT2
2522 DTRACE_PROBE3(hotspot_jni, CallStaticVoidMethodV__entry, env, cls, methodID);
2523 #else /* USDT2 */
2524 HOTSPOT_JNI_CALLSTATICVOIDMETHODV_ENTRY(
2525 env, cls, (uintptr_t) methodID);
2526 #endif /* USDT2 */
2527 DT_VOID_RETURN_MARK(CallStaticVoidMethodV);
2528
2529 JavaValue jvalue(T_VOID);
2530 JNI_ArgumentPusherVaArg ap(methodID, args);
2531 jni_invoke_static(env, &jvalue, NULL, JNI_STATIC, methodID, &ap, CHECK);
2532 JNI_END
2533
2534
2535 JNI_ENTRY(void, jni_CallStaticVoidMethodA(JNIEnv *env, jclass cls, jmethodID methodID, const jvalue *args))
2536 JNIWrapper("CallStaticVoidMethodA");
2537 #ifndef USDT2
2538 DTRACE_PROBE3(hotspot_jni, CallStaticVoidMethodA__entry, env, cls, methodID);
2539 #else /* USDT2 */
2540 HOTSPOT_JNI_CALLSTATICVOIDMETHODA_ENTRY(
2541 env, cls, (uintptr_t) methodID);
2542 #endif /* USDT2 */
2543 DT_VOID_RETURN_MARK(CallStaticVoidMethodA);
2544
2545 JavaValue jvalue(T_VOID);
2546 JNI_ArgumentPusherArray ap(methodID, args);
2547 jni_invoke_static(env, &jvalue, NULL, JNI_STATIC, methodID, &ap, CHECK);
2548 JNI_END
2549
2550
2551 //
2552 // Accessing Fields
2553 //
2554
2555
2556 #ifndef USDT2
2557 DT_RETURN_MARK_DECL(GetFieldID, jfieldID);
2558 #else /* USDT2 */
2559 DT_RETURN_MARK_DECL(GetFieldID, jfieldID
2560 , HOTSPOT_JNI_GETFIELDID_RETURN((uintptr_t)_ret_ref));
2561 #endif /* USDT2 */
2562
2563 JNI_ENTRY(jfieldID, jni_GetFieldID(JNIEnv *env, jclass clazz,
2564 const char *name, const char *sig))
2565 JNIWrapper("GetFieldID");
2566 #ifndef USDT2
2567 DTRACE_PROBE4(hotspot_jni, GetFieldID__entry, env, clazz, name, sig);
2568 #else /* USDT2 */
2569 HOTSPOT_JNI_GETFIELDID_ENTRY(
2570 env, clazz, (char *) name, (char *) sig);
2571 #endif /* USDT2 */
2572 jfieldID ret = 0;
2573 DT_RETURN_MARK(GetFieldID, jfieldID, (const jfieldID&)ret);
2574
2575 // The class should have been loaded (we have an instance of the class
2576 // passed in) so the field and signature should already be in the symbol
2577 // table. If they're not there, the field doesn't exist.
2578 TempNewSymbol fieldname = SymbolTable::probe(name, (int)strlen(name));
2579 TempNewSymbol signame = SymbolTable::probe(sig, (int)strlen(sig));
2580 if (fieldname == NULL || signame == NULL) {
2581 THROW_MSG_0(vmSymbols::java_lang_NoSuchFieldError(), (char*) name);
2582 }
2583 KlassHandle k(THREAD,
2584 java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz)));
2585 // Make sure class is initialized before handing id's out to fields
2586 k()->initialize(CHECK_NULL);
2587
2588 fieldDescriptor fd;
2589 if (!k()->oop_is_instance() ||
2590 !InstanceKlass::cast(k())->find_field(fieldname, signame, false, &fd)) {
2591 THROW_MSG_0(vmSymbols::java_lang_NoSuchFieldError(), (char*) name);
2592 }
2593
2594 // A jfieldID for a non-static field is simply the offset of the field within the instanceOop
2595 // It may also have hash bits for k, if VerifyJNIFields is turned on.
2596 ret = jfieldIDWorkaround::to_instance_jfieldID(k(), fd.offset());
2597 return ret;
2598 JNI_END
2599
2600
2601 JNI_ENTRY(jobject, jni_GetObjectField(JNIEnv *env, jobject obj, jfieldID fieldID))
2602 JNIWrapper("GetObjectField");
2603 #ifndef USDT2
2604 DTRACE_PROBE3(hotspot_jni, GetObjectField__entry, env, obj, fieldID);
2605 #else /* USDT2 */
2606 HOTSPOT_JNI_GETOBJECTFIELD_ENTRY(
2607 env, obj, (uintptr_t) fieldID);
2608 #endif /* USDT2 */
2609 oop o = JNIHandles::resolve_non_null(obj);
2610 Klass* k = o->klass();
2611 int offset = jfieldIDWorkaround::from_instance_jfieldID(k, fieldID);
2612 // Keep JVMTI addition small and only check enabled flag here.
2613 // jni_GetField_probe() assumes that is okay to create handles.
2614 if (JvmtiExport::should_post_field_access()) {
2615 o = JvmtiExport::jni_GetField_probe(thread, obj, o, k, fieldID, false);
2616 }
2617 jobject ret = JNIHandles::make_local(env, o->obj_field(offset));
2618 #if INCLUDE_ALL_GCS
2619 // If G1 is enabled and we are accessing the value of the referent
2620 // field in a reference object then we need to register a non-null
2621 // referent with the SATB barrier.
2622 if (UseG1GC) {
2623 bool needs_barrier = false;
2624
2625 if (ret != NULL &&
2626 offset == java_lang_ref_Reference::referent_offset &&
2627 InstanceKlass::cast(k)->reference_type() != REF_NONE) {
2628 assert(InstanceKlass::cast(k)->is_subclass_of(SystemDictionary::Reference_klass()), "sanity");
2629 needs_barrier = true;
2630 }
2631
2632 if (needs_barrier) {
2633 oop referent = JNIHandles::resolve(ret);
2634 G1SATBCardTableModRefBS::enqueue(referent);
2635 }
2636 }
2637 #endif // INCLUDE_ALL_GCS
2638 #ifndef USDT2
2639 DTRACE_PROBE1(hotspot_jni, GetObjectField__return, ret);
2640 #else /* USDT2 */
2641 HOTSPOT_JNI_GETOBJECTFIELD_RETURN(
2642 ret);
2643 #endif /* USDT2 */
2644 return ret;
2645 JNI_END
2646
2647
2648 #ifndef USDT2
2649 #define DEFINE_GETFIELD(Return,Fieldname,Result) \
2650 \
2651 DT_RETURN_MARK_DECL_FOR(Result, Get##Result##Field, Return);\
2652 \
2653 JNI_QUICK_ENTRY(Return, jni_Get##Result##Field(JNIEnv *env, jobject obj, jfieldID fieldID)) \
2654 JNIWrapper("Get" XSTR(Result) "Field"); \
2655 \
2656 DTRACE_PROBE3(hotspot_jni, Get##Result##Field__entry, env, obj, fieldID);\
2657 Return ret = 0;\
2658 DT_RETURN_MARK_FOR(Result, Get##Result##Field, Return, (const Return&)ret);\
2659 \
2660 oop o = JNIHandles::resolve_non_null(obj); \
2661 Klass* k = o->klass(); \
2662 int offset = jfieldIDWorkaround::from_instance_jfieldID(k, fieldID); \
2663 /* Keep JVMTI addition small and only check enabled flag here. */ \
2664 /* jni_GetField_probe_nh() assumes that is not okay to create handles */ \
2665 /* and creates a ResetNoHandleMark. */ \
2666 if (JvmtiExport::should_post_field_access()) { \
2667 o = JvmtiExport::jni_GetField_probe_nh(thread, obj, o, k, fieldID, false); \
2668 } \
2669 ret = o->Fieldname##_field(offset); \
2670 return ret; \
2671 JNI_END
2672
2673 DEFINE_GETFIELD(jboolean, bool, Boolean)
2674 DEFINE_GETFIELD(jbyte, byte, Byte)
2675 DEFINE_GETFIELD(jchar, char, Char)
2676 DEFINE_GETFIELD(jshort, short, Short)
2677 DEFINE_GETFIELD(jint, int, Int)
2678 DEFINE_GETFIELD(jlong, long, Long)
2679 DEFINE_GETFIELD(jfloat, float, Float)
2680 DEFINE_GETFIELD(jdouble, double, Double)
2681
2682 #else /* USDT2 */
2683
2684 #define DEFINE_GETFIELD(Return,Fieldname,Result \
2685 , EntryProbe, ReturnProbe) \
2686 \
2687 DT_RETURN_MARK_DECL_FOR(Result, Get##Result##Field, Return \
2688 , ReturnProbe); \
2689 \
2690 JNI_QUICK_ENTRY(Return, jni_Get##Result##Field(JNIEnv *env, jobject obj, jfieldID fieldID)) \
2691 JNIWrapper("Get" XSTR(Result) "Field"); \
2692 \
2693 EntryProbe; \
2694 Return ret = 0;\
2695 DT_RETURN_MARK_FOR(Result, Get##Result##Field, Return, (const Return&)ret);\
2696 \
2697 oop o = JNIHandles::resolve_non_null(obj); \
2698 Klass* k = o->klass(); \
2699 int offset = jfieldIDWorkaround::from_instance_jfieldID(k, fieldID); \
2700 /* Keep JVMTI addition small and only check enabled flag here. */ \
2701 /* jni_GetField_probe_nh() assumes that is not okay to create handles */ \
2702 /* and creates a ResetNoHandleMark. */ \
2703 if (JvmtiExport::should_post_field_access()) { \
2704 o = JvmtiExport::jni_GetField_probe_nh(thread, obj, o, k, fieldID, false); \
2705 } \
2706 ret = o->Fieldname##_field(offset); \
2707 return ret; \
2708 JNI_END
2709
2710 DEFINE_GETFIELD(jboolean, bool, Boolean
2711 , HOTSPOT_JNI_GETBOOLEANFIELD_ENTRY(env, obj, (uintptr_t)fieldID),
2712 HOTSPOT_JNI_GETBOOLEANFIELD_RETURN(_ret_ref))
2713 DEFINE_GETFIELD(jbyte, byte, Byte
2714 , HOTSPOT_JNI_GETBYTEFIELD_ENTRY(env, obj, (uintptr_t)fieldID),
2715 HOTSPOT_JNI_GETBYTEFIELD_RETURN(_ret_ref))
2716 DEFINE_GETFIELD(jchar, char, Char
2717 , HOTSPOT_JNI_GETCHARFIELD_ENTRY(env, obj, (uintptr_t)fieldID),
2718 HOTSPOT_JNI_GETCHARFIELD_RETURN(_ret_ref))
2719 DEFINE_GETFIELD(jshort, short, Short
2720 , HOTSPOT_JNI_GETSHORTFIELD_ENTRY(env, obj, (uintptr_t)fieldID),
2721 HOTSPOT_JNI_GETSHORTFIELD_RETURN(_ret_ref))
2722 DEFINE_GETFIELD(jint, int, Int
2723 , HOTSPOT_JNI_GETINTFIELD_ENTRY(env, obj, (uintptr_t)fieldID),
2724 HOTSPOT_JNI_GETINTFIELD_RETURN(_ret_ref))
2725 DEFINE_GETFIELD(jlong, long, Long
2726 , HOTSPOT_JNI_GETLONGFIELD_ENTRY(env, obj, (uintptr_t)fieldID),
2727 HOTSPOT_JNI_GETLONGFIELD_RETURN(_ret_ref))
2728 // Float and double probes don't return value because dtrace doesn't currently support it
2729 DEFINE_GETFIELD(jfloat, float, Float
2730 , HOTSPOT_JNI_GETFLOATFIELD_ENTRY(env, obj, (uintptr_t)fieldID),
2731 HOTSPOT_JNI_GETFLOATFIELD_RETURN())
2732 DEFINE_GETFIELD(jdouble, double, Double
2733 , HOTSPOT_JNI_GETDOUBLEFIELD_ENTRY(env, obj, (uintptr_t)fieldID),
2734 HOTSPOT_JNI_GETDOUBLEFIELD_RETURN())
2735 #endif /* USDT2 */
2736
2737 address jni_GetBooleanField_addr() {
2738 return (address)jni_GetBooleanField;
2739 }
2740 address jni_GetByteField_addr() {
2741 return (address)jni_GetByteField;
2742 }
2743 address jni_GetCharField_addr() {
2744 return (address)jni_GetCharField;
2745 }
2746 address jni_GetShortField_addr() {
2747 return (address)jni_GetShortField;
2748 }
2749 address jni_GetIntField_addr() {
2750 return (address)jni_GetIntField;
2751 }
2752 address jni_GetLongField_addr() {
2753 return (address)jni_GetLongField;
2754 }
2755 address jni_GetFloatField_addr() {
2756 return (address)jni_GetFloatField;
2757 }
2758 address jni_GetDoubleField_addr() {
2759 return (address)jni_GetDoubleField;
2760 }
2761
2762 JNI_QUICK_ENTRY(void, jni_SetObjectField(JNIEnv *env, jobject obj, jfieldID fieldID, jobject value))
2763 JNIWrapper("SetObjectField");
2764 #ifndef USDT2
2765 DTRACE_PROBE4(hotspot_jni, SetObjectField__entry, env, obj, fieldID, value);
2766 #else /* USDT2 */
2767 HOTSPOT_JNI_SETOBJECTFIELD_ENTRY(
2768 env, obj, (uintptr_t) fieldID, value);
2769 #endif /* USDT2 */
2770 oop o = JNIHandles::resolve_non_null(obj);
2771 Klass* k = o->klass();
2772 int offset = jfieldIDWorkaround::from_instance_jfieldID(k, fieldID);
2773 // Keep JVMTI addition small and only check enabled flag here.
2774 // jni_SetField_probe_nh() assumes that is not okay to create handles
2775 // and creates a ResetNoHandleMark.
2776 if (JvmtiExport::should_post_field_modification()) {
2777 jvalue field_value;
2778 field_value.l = value;
2779 o = JvmtiExport::jni_SetField_probe_nh(thread, obj, o, k, fieldID, false, 'L', (jvalue *)&field_value);
2780 }
2781 o->obj_field_put(offset, JNIHandles::resolve(value));
2782 #ifndef USDT2
2783 DTRACE_PROBE(hotspot_jni, SetObjectField__return);
2784 #else /* USDT2 */
2785 HOTSPOT_JNI_SETOBJECTFIELD_RETURN(
2786 );
2787 #endif /* USDT2 */
2788 JNI_END
2789
2790 #ifndef USDT2
2791 #define DEFINE_SETFIELD(Argument,Fieldname,Result,SigType,unionType) \
2792 \
2793 JNI_QUICK_ENTRY(void, jni_Set##Result##Field(JNIEnv *env, jobject obj, jfieldID fieldID, Argument value)) \
2794 JNIWrapper("Set" XSTR(Result) "Field"); \
2795 \
2796 FP_SELECT_##Result( \
2797 DTRACE_PROBE4(hotspot_jni, Set##Result##Field__entry, env, obj, fieldID, value), \
2798 DTRACE_PROBE3(hotspot_jni, Set##Result##Field__entry, env, obj, fieldID)); \
2799 \
2800 oop o = JNIHandles::resolve_non_null(obj); \
2801 Klass* k = o->klass(); \
2802 int offset = jfieldIDWorkaround::from_instance_jfieldID(k, fieldID); \
2803 /* Keep JVMTI addition small and only check enabled flag here. */ \
2804 /* jni_SetField_probe_nh() assumes that is not okay to create handles */ \
2805 /* and creates a ResetNoHandleMark. */ \
2806 if (JvmtiExport::should_post_field_modification()) { \
2807 jvalue field_value; \
2808 field_value.unionType = value; \
2809 o = JvmtiExport::jni_SetField_probe_nh(thread, obj, o, k, fieldID, false, SigType, (jvalue *)&field_value); \
2810 } \
2811 o->Fieldname##_field_put(offset, value); \
2812 DTRACE_PROBE(hotspot_jni, Set##Result##Field__return);\
2813 JNI_END
2814
2815 DEFINE_SETFIELD(jboolean, bool, Boolean, 'Z', z)
2816 DEFINE_SETFIELD(jbyte, byte, Byte, 'B', b)
2817 DEFINE_SETFIELD(jchar, char, Char, 'C', c)
2818 DEFINE_SETFIELD(jshort, short, Short, 'S', s)
2819 DEFINE_SETFIELD(jint, int, Int, 'I', i)
2820 DEFINE_SETFIELD(jlong, long, Long, 'J', j)
2821 DEFINE_SETFIELD(jfloat, float, Float, 'F', f)
2822 DEFINE_SETFIELD(jdouble, double, Double, 'D', d)
2823
2824 #else /* USDT2 */
2825
2826 #define DEFINE_SETFIELD(Argument,Fieldname,Result,SigType,unionType \
2827 , EntryProbe, ReturnProbe) \
2828 \
2829 JNI_QUICK_ENTRY(void, jni_Set##Result##Field(JNIEnv *env, jobject obj, jfieldID fieldID, Argument value)) \
2830 JNIWrapper("Set" XSTR(Result) "Field"); \
2831 \
2832 EntryProbe; \
2833 \
2834 oop o = JNIHandles::resolve_non_null(obj); \
2835 Klass* k = o->klass(); \
2836 int offset = jfieldIDWorkaround::from_instance_jfieldID(k, fieldID); \
2837 /* Keep JVMTI addition small and only check enabled flag here. */ \
2838 /* jni_SetField_probe_nh() assumes that is not okay to create handles */ \
2839 /* and creates a ResetNoHandleMark. */ \
2840 if (JvmtiExport::should_post_field_modification()) { \
2841 jvalue field_value; \
2842 field_value.unionType = value; \
2843 o = JvmtiExport::jni_SetField_probe_nh(thread, obj, o, k, fieldID, false, SigType, (jvalue *)&field_value); \
2844 } \
2845 o->Fieldname##_field_put(offset, value); \
2846 ReturnProbe; \
2847 JNI_END
2848
2849 DEFINE_SETFIELD(jboolean, bool, Boolean, 'Z', z
2850 , HOTSPOT_JNI_SETBOOLEANFIELD_ENTRY(env, obj, (uintptr_t)fieldID, value),
2851 HOTSPOT_JNI_SETBOOLEANFIELD_RETURN())
2852 DEFINE_SETFIELD(jbyte, byte, Byte, 'B', b
2853 , HOTSPOT_JNI_SETBYTEFIELD_ENTRY(env, obj, (uintptr_t)fieldID, value),
2854 HOTSPOT_JNI_SETBYTEFIELD_RETURN())
2855 DEFINE_SETFIELD(jchar, char, Char, 'C', c
2856 , HOTSPOT_JNI_SETCHARFIELD_ENTRY(env, obj, (uintptr_t)fieldID, value),
2857 HOTSPOT_JNI_SETCHARFIELD_RETURN())
2858 DEFINE_SETFIELD(jshort, short, Short, 'S', s
2859 , HOTSPOT_JNI_SETSHORTFIELD_ENTRY(env, obj, (uintptr_t)fieldID, value),
2860 HOTSPOT_JNI_SETSHORTFIELD_RETURN())
2861 DEFINE_SETFIELD(jint, int, Int, 'I', i
2862 , HOTSPOT_JNI_SETINTFIELD_ENTRY(env, obj, (uintptr_t)fieldID, value),
2863 HOTSPOT_JNI_SETINTFIELD_RETURN())
2864 DEFINE_SETFIELD(jlong, long, Long, 'J', j
2865 , HOTSPOT_JNI_SETLONGFIELD_ENTRY(env, obj, (uintptr_t)fieldID, value),
2866 HOTSPOT_JNI_SETLONGFIELD_RETURN())
2867 // Float and double probes don't return value because dtrace doesn't currently support it
2868 DEFINE_SETFIELD(jfloat, float, Float, 'F', f
2869 , HOTSPOT_JNI_SETFLOATFIELD_ENTRY(env, obj, (uintptr_t)fieldID),
2870 HOTSPOT_JNI_SETFLOATFIELD_RETURN())
2871 DEFINE_SETFIELD(jdouble, double, Double, 'D', d
2872 , HOTSPOT_JNI_SETDOUBLEFIELD_ENTRY(env, obj, (uintptr_t)fieldID),
2873 HOTSPOT_JNI_SETDOUBLEFIELD_RETURN())
2874 #endif /* USDT2 */
2875
2876 #ifndef USDT2
2877 DT_RETURN_MARK_DECL(ToReflectedField, jobject);
2878 #else /* USDT2 */
2879 DT_RETURN_MARK_DECL(ToReflectedField, jobject
2880 , HOTSPOT_JNI_TOREFLECTEDFIELD_RETURN(_ret_ref));
2881 #endif /* USDT2 */
2882
2883 JNI_ENTRY(jobject, jni_ToReflectedField(JNIEnv *env, jclass cls, jfieldID fieldID, jboolean isStatic))
2884 JNIWrapper("ToReflectedField");
2885 #ifndef USDT2
2886 DTRACE_PROBE4(hotspot_jni, ToReflectedField__entry,
2887 env, cls, fieldID, isStatic);
2888 #else /* USDT2 */
2889 HOTSPOT_JNI_TOREFLECTEDFIELD_ENTRY(
2890 env, cls, (uintptr_t) fieldID, isStatic);
2891 #endif /* USDT2 */
2892 jobject ret = NULL;
2893 DT_RETURN_MARK(ToReflectedField, jobject, (const jobject&)ret);
2894
2895 fieldDescriptor fd;
2896 bool found = false;
2897 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls));
2898
2899 assert(jfieldIDWorkaround::is_static_jfieldID(fieldID) == (isStatic != 0), "invalid fieldID");
2900
2901 if (isStatic) {
2902 // Static field. The fieldID a JNIid specifying the field holder and the offset within the Klass*.
2903 JNIid* id = jfieldIDWorkaround::from_static_jfieldID(fieldID);
2904 assert(id->is_static_field_id(), "invalid static field id");
2905 found = id->find_local_field(&fd);
2906 } else {
2907 // Non-static field. The fieldID is really the offset of the field within the instanceOop.
2908 int offset = jfieldIDWorkaround::from_instance_jfieldID(k, fieldID);
2909 found = InstanceKlass::cast(k)->find_field_from_offset(offset, false, &fd);
2910 }
2911 assert(found, "bad fieldID passed into jni_ToReflectedField");
2912 oop reflected = Reflection::new_field(&fd, UseNewReflection, CHECK_NULL);
2913 ret = JNIHandles::make_local(env, reflected);
2914 return ret;
2915 JNI_END
2916
2917
2918 //
2919 // Accessing Static Fields
2920 //
2921 #ifndef USDT2
2922 DT_RETURN_MARK_DECL(GetStaticFieldID, jfieldID);
2923 #else /* USDT2 */
2924 DT_RETURN_MARK_DECL(GetStaticFieldID, jfieldID
2925 , HOTSPOT_JNI_GETSTATICFIELDID_RETURN((uintptr_t)_ret_ref));
2926 #endif /* USDT2 */
2927
2928 JNI_ENTRY(jfieldID, jni_GetStaticFieldID(JNIEnv *env, jclass clazz,
2929 const char *name, const char *sig))
2930 JNIWrapper("GetStaticFieldID");
2931 #ifndef USDT2
2932 DTRACE_PROBE4(hotspot_jni, GetStaticFieldID__entry, env, clazz, name, sig);
2933 #else /* USDT2 */
2934 HOTSPOT_JNI_GETSTATICFIELDID_ENTRY(
2935 env, clazz, (char *) name, (char *) sig);
2936 #endif /* USDT2 */
2937 jfieldID ret = NULL;
2938 DT_RETURN_MARK(GetStaticFieldID, jfieldID, (const jfieldID&)ret);
2939
2940 // The class should have been loaded (we have an instance of the class
2941 // passed in) so the field and signature should already be in the symbol
2942 // table. If they're not there, the field doesn't exist.
2943 TempNewSymbol fieldname = SymbolTable::probe(name, (int)strlen(name));
2944 TempNewSymbol signame = SymbolTable::probe(sig, (int)strlen(sig));
2945 if (fieldname == NULL || signame == NULL) {
2946 THROW_MSG_0(vmSymbols::java_lang_NoSuchFieldError(), (char*) name);
2947 }
2948 KlassHandle k(THREAD,
2949 java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz)));
2950 // Make sure class is initialized before handing id's out to static fields
2951 k()->initialize(CHECK_NULL);
2952
2953 fieldDescriptor fd;
2954 if (!k()->oop_is_instance() ||
2955 !InstanceKlass::cast(k())->find_field(fieldname, signame, true, &fd)) {
2956 THROW_MSG_0(vmSymbols::java_lang_NoSuchFieldError(), (char*) name);
2957 }
2958
2959 // A jfieldID for a static field is a JNIid specifying the field holder and the offset within the Klass*
2960 JNIid* id = fd.field_holder()->jni_id_for(fd.offset());
2961 debug_only(id->set_is_static_field_id();)
2962
2963 debug_only(id->verify(fd.field_holder()));
2964
2965 ret = jfieldIDWorkaround::to_static_jfieldID(id);
2966 return ret;
2967 JNI_END
2968
2969
2970 JNI_ENTRY(jobject, jni_GetStaticObjectField(JNIEnv *env, jclass clazz, jfieldID fieldID))
2971 JNIWrapper("GetStaticObjectField");
2972 #ifndef USDT2
2973 DTRACE_PROBE3(hotspot_jni, GetStaticObjectField__entry, env, clazz, fieldID);
2974 #else /* USDT2 */
2975 HOTSPOT_JNI_GETSTATICOBJECTFIELD_ENTRY(
2976 env, clazz, (uintptr_t) fieldID);
2977 #endif /* USDT2 */
2978 #if INCLUDE_JNI_CHECK
2979 DEBUG_ONLY(Klass* param_k = jniCheck::validate_class(thread, clazz);)
2980 #endif // INCLUDE_JNI_CHECK
2981 JNIid* id = jfieldIDWorkaround::from_static_jfieldID(fieldID);
2982 assert(id->is_static_field_id(), "invalid static field id");
2983 // Keep JVMTI addition small and only check enabled flag here.
2984 // jni_GetField_probe() assumes that is okay to create handles.
2985 if (JvmtiExport::should_post_field_access()) {
2986 JvmtiExport::jni_GetField_probe(thread, NULL, NULL, id->holder(), fieldID, true);
2987 }
2988 jobject ret = JNIHandles::make_local(id->holder()->java_mirror()->obj_field(id->offset()));
2989 #ifndef USDT2
2990 DTRACE_PROBE1(hotspot_jni, GetStaticObjectField__return, ret);
2991 #else /* USDT2 */
2992 HOTSPOT_JNI_GETSTATICOBJECTFIELD_RETURN(
2993 ret);
2994 #endif /* USDT2 */
2995 return ret;
2996 JNI_END
2997
2998 #ifndef USDT2
2999 #define DEFINE_GETSTATICFIELD(Return,Fieldname,Result) \
3000 \
3001 DT_RETURN_MARK_DECL_FOR(Result, GetStatic##Result##Field, Return);\
3002 \
3003 JNI_ENTRY(Return, jni_GetStatic##Result##Field(JNIEnv *env, jclass clazz, jfieldID fieldID)) \
3004 JNIWrapper("GetStatic" XSTR(Result) "Field"); \
3005 DTRACE_PROBE3(hotspot_jni, GetStatic##Result##Field__entry, env, clazz, fieldID);\
3006 Return ret = 0;\
3007 DT_RETURN_MARK_FOR(Result, GetStatic##Result##Field, Return, \
3008 (const Return&)ret);\
3009 JNIid* id = jfieldIDWorkaround::from_static_jfieldID(fieldID); \
3010 assert(id->is_static_field_id(), "invalid static field id"); \
3011 /* Keep JVMTI addition small and only check enabled flag here. */ \
3012 /* jni_GetField_probe() assumes that is okay to create handles. */ \
3013 if (JvmtiExport::should_post_field_access()) { \
3014 JvmtiExport::jni_GetField_probe(thread, NULL, NULL, id->holder(), fieldID, true); \
3015 } \
3016 ret = id->holder()->java_mirror()-> Fieldname##_field (id->offset()); \
3017 return ret;\
3018 JNI_END
3019
3020 DEFINE_GETSTATICFIELD(jboolean, bool, Boolean)
3021 DEFINE_GETSTATICFIELD(jbyte, byte, Byte)
3022 DEFINE_GETSTATICFIELD(jchar, char, Char)
3023 DEFINE_GETSTATICFIELD(jshort, short, Short)
3024 DEFINE_GETSTATICFIELD(jint, int, Int)
3025 DEFINE_GETSTATICFIELD(jlong, long, Long)
3026 DEFINE_GETSTATICFIELD(jfloat, float, Float)
3027 DEFINE_GETSTATICFIELD(jdouble, double, Double)
3028
3029 #else /* USDT2 */
3030
3031 #define DEFINE_GETSTATICFIELD(Return,Fieldname,Result \
3032 , EntryProbe, ReturnProbe) \
3033 \
3034 DT_RETURN_MARK_DECL_FOR(Result, GetStatic##Result##Field, Return \
3035 , ReturnProbe); \
3036 \
3037 JNI_ENTRY(Return, jni_GetStatic##Result##Field(JNIEnv *env, jclass clazz, jfieldID fieldID)) \
3038 JNIWrapper("GetStatic" XSTR(Result) "Field"); \
3039 EntryProbe; \
3040 Return ret = 0;\
3041 DT_RETURN_MARK_FOR(Result, GetStatic##Result##Field, Return, \
3042 (const Return&)ret);\
3043 JNIid* id = jfieldIDWorkaround::from_static_jfieldID(fieldID); \
3044 assert(id->is_static_field_id(), "invalid static field id"); \
3045 /* Keep JVMTI addition small and only check enabled flag here. */ \
3046 /* jni_GetField_probe() assumes that is okay to create handles. */ \
3047 if (JvmtiExport::should_post_field_access()) { \
3048 JvmtiExport::jni_GetField_probe(thread, NULL, NULL, id->holder(), fieldID, true); \
3049 } \
3050 ret = id->holder()->java_mirror()-> Fieldname##_field (id->offset()); \
3051 return ret;\
3052 JNI_END
3053
3054 DEFINE_GETSTATICFIELD(jboolean, bool, Boolean
3055 , HOTSPOT_JNI_GETSTATICBOOLEANFIELD_ENTRY(env, clazz, (uintptr_t) fieldID), HOTSPOT_JNI_GETSTATICBOOLEANFIELD_RETURN(_ret_ref))
3056 DEFINE_GETSTATICFIELD(jbyte, byte, Byte
3057 , HOTSPOT_JNI_GETSTATICBYTEFIELD_ENTRY(env, clazz, (uintptr_t) fieldID), HOTSPOT_JNI_GETSTATICBYTEFIELD_RETURN(_ret_ref) )
3058 DEFINE_GETSTATICFIELD(jchar, char, Char
3059 , HOTSPOT_JNI_GETSTATICCHARFIELD_ENTRY(env, clazz, (uintptr_t) fieldID), HOTSPOT_JNI_GETSTATICCHARFIELD_RETURN(_ret_ref) )
3060 DEFINE_GETSTATICFIELD(jshort, short, Short
3061 , HOTSPOT_JNI_GETSTATICSHORTFIELD_ENTRY(env, clazz, (uintptr_t) fieldID), HOTSPOT_JNI_GETSTATICSHORTFIELD_RETURN(_ret_ref) )
3062 DEFINE_GETSTATICFIELD(jint, int, Int
3063 , HOTSPOT_JNI_GETSTATICINTFIELD_ENTRY(env, clazz, (uintptr_t) fieldID), HOTSPOT_JNI_GETSTATICINTFIELD_RETURN(_ret_ref) )
3064 DEFINE_GETSTATICFIELD(jlong, long, Long
3065 , HOTSPOT_JNI_GETSTATICLONGFIELD_ENTRY(env, clazz, (uintptr_t) fieldID), HOTSPOT_JNI_GETSTATICLONGFIELD_RETURN(_ret_ref) )
3066 // Float and double probes don't return value because dtrace doesn't currently support it
3067 DEFINE_GETSTATICFIELD(jfloat, float, Float
3068 , HOTSPOT_JNI_GETSTATICFLOATFIELD_ENTRY(env, clazz, (uintptr_t) fieldID), HOTSPOT_JNI_GETSTATICFLOATFIELD_RETURN() )
3069 DEFINE_GETSTATICFIELD(jdouble, double, Double
3070 , HOTSPOT_JNI_GETSTATICDOUBLEFIELD_ENTRY(env, clazz, (uintptr_t) fieldID), HOTSPOT_JNI_GETSTATICDOUBLEFIELD_RETURN() )
3071 #endif /* USDT2 */
3072
3073 JNI_ENTRY(void, jni_SetStaticObjectField(JNIEnv *env, jclass clazz, jfieldID fieldID, jobject value))
3074 JNIWrapper("SetStaticObjectField");
3075 #ifndef USDT2
3076 DTRACE_PROBE4(hotspot_jni, SetStaticObjectField__entry, env, clazz, fieldID, value);
3077 #else /* USDT2 */
3078 HOTSPOT_JNI_SETSTATICOBJECTFIELD_ENTRY(
3079 env, clazz, (uintptr_t) fieldID, value);
3080 #endif /* USDT2 */
3081 JNIid* id = jfieldIDWorkaround::from_static_jfieldID(fieldID);
3082 assert(id->is_static_field_id(), "invalid static field id");
3083 // Keep JVMTI addition small and only check enabled flag here.
3084 // jni_SetField_probe() assumes that is okay to create handles.
3085 if (JvmtiExport::should_post_field_modification()) {
3086 jvalue field_value;
3087 field_value.l = value;
3088 JvmtiExport::jni_SetField_probe(thread, NULL, NULL, id->holder(), fieldID, true, 'L', (jvalue *)&field_value);
3089 }
3090 id->holder()->java_mirror()->obj_field_put(id->offset(), JNIHandles::resolve(value));
3091 #ifndef USDT2
3092 DTRACE_PROBE(hotspot_jni, SetStaticObjectField__return);
3093 #else /* USDT2 */
3094 HOTSPOT_JNI_SETSTATICOBJECTFIELD_RETURN(
3095 );
3096 #endif /* USDT2 */
3097 JNI_END
3098
3099
3100 #ifndef USDT2
3101 #define DEFINE_SETSTATICFIELD(Argument,Fieldname,Result,SigType,unionType) \
3102 \
3103 JNI_ENTRY(void, jni_SetStatic##Result##Field(JNIEnv *env, jclass clazz, jfieldID fieldID, Argument value)) \
3104 JNIWrapper("SetStatic" XSTR(Result) "Field"); \
3105 FP_SELECT_##Result( \
3106 DTRACE_PROBE4(hotspot_jni, SetStatic##Result##Field__entry, env, clazz, fieldID, value), \
3107 DTRACE_PROBE3(hotspot_jni, SetStatic##Result##Field__entry, env, clazz, fieldID)); \
3108 \
3109 JNIid* id = jfieldIDWorkaround::from_static_jfieldID(fieldID); \
3110 assert(id->is_static_field_id(), "invalid static field id"); \
3111 /* Keep JVMTI addition small and only check enabled flag here. */ \
3112 /* jni_SetField_probe() assumes that is okay to create handles. */ \
3113 if (JvmtiExport::should_post_field_modification()) { \
3114 jvalue field_value; \
3115 field_value.unionType = value; \
3116 JvmtiExport::jni_SetField_probe(thread, NULL, NULL, id->holder(), fieldID, true, SigType, (jvalue *)&field_value); \
3117 } \
3118 id->holder()->java_mirror()-> Fieldname##_field_put (id->offset(), value); \
3119 DTRACE_PROBE(hotspot_jni, SetStatic##Result##Field__return);\
3120 JNI_END
3121
3122 DEFINE_SETSTATICFIELD(jboolean, bool, Boolean, 'Z', z)
3123 DEFINE_SETSTATICFIELD(jbyte, byte, Byte, 'B', b)
3124 DEFINE_SETSTATICFIELD(jchar, char, Char, 'C', c)
3125 DEFINE_SETSTATICFIELD(jshort, short, Short, 'S', s)
3126 DEFINE_SETSTATICFIELD(jint, int, Int, 'I', i)
3127 DEFINE_SETSTATICFIELD(jlong, long, Long, 'J', j)
3128 DEFINE_SETSTATICFIELD(jfloat, float, Float, 'F', f)
3129 DEFINE_SETSTATICFIELD(jdouble, double, Double, 'D', d)
3130
3131 #else /* USDT2 */
3132
3133 #define DEFINE_SETSTATICFIELD(Argument,Fieldname,Result,SigType,unionType \
3134 , EntryProbe, ReturnProbe) \
3135 \
3136 JNI_ENTRY(void, jni_SetStatic##Result##Field(JNIEnv *env, jclass clazz, jfieldID fieldID, Argument value)) \
3137 JNIWrapper("SetStatic" XSTR(Result) "Field"); \
3138 EntryProbe; \
3139 \
3140 JNIid* id = jfieldIDWorkaround::from_static_jfieldID(fieldID); \
3141 assert(id->is_static_field_id(), "invalid static field id"); \
3142 /* Keep JVMTI addition small and only check enabled flag here. */ \
3143 /* jni_SetField_probe() assumes that is okay to create handles. */ \
3144 if (JvmtiExport::should_post_field_modification()) { \
3145 jvalue field_value; \
3146 field_value.unionType = value; \
3147 JvmtiExport::jni_SetField_probe(thread, NULL, NULL, id->holder(), fieldID, true, SigType, (jvalue *)&field_value); \
3148 } \
3149 id->holder()->java_mirror()-> Fieldname##_field_put (id->offset(), value); \
3150 ReturnProbe;\
3151 JNI_END
3152
3153 DEFINE_SETSTATICFIELD(jboolean, bool, Boolean, 'Z', z
3154 , HOTSPOT_JNI_SETBOOLEANFIELD_ENTRY(env, clazz, (uintptr_t)fieldID, value),
3155 HOTSPOT_JNI_SETBOOLEANFIELD_RETURN())
3156 DEFINE_SETSTATICFIELD(jbyte, byte, Byte, 'B', b
3157 , HOTSPOT_JNI_SETSTATICBYTEFIELD_ENTRY(env, clazz, (uintptr_t) fieldID, value),
3158 HOTSPOT_JNI_SETSTATICBYTEFIELD_RETURN())
3159 DEFINE_SETSTATICFIELD(jchar, char, Char, 'C', c
3160 , HOTSPOT_JNI_SETSTATICCHARFIELD_ENTRY(env, clazz, (uintptr_t) fieldID, value),
3161 HOTSPOT_JNI_SETSTATICCHARFIELD_RETURN())
3162 DEFINE_SETSTATICFIELD(jshort, short, Short, 'S', s
3163 , HOTSPOT_JNI_SETSTATICSHORTFIELD_ENTRY(env, clazz, (uintptr_t) fieldID, value),
3164 HOTSPOT_JNI_SETSTATICSHORTFIELD_RETURN())
3165 DEFINE_SETSTATICFIELD(jint, int, Int, 'I', i
3166 , HOTSPOT_JNI_SETSTATICINTFIELD_ENTRY(env, clazz, (uintptr_t) fieldID, value),
3167 HOTSPOT_JNI_SETSTATICINTFIELD_RETURN())
3168 DEFINE_SETSTATICFIELD(jlong, long, Long, 'J', j
3169 , HOTSPOT_JNI_SETSTATICLONGFIELD_ENTRY(env, clazz, (uintptr_t) fieldID, value),
3170 HOTSPOT_JNI_SETSTATICLONGFIELD_RETURN())
3171 // Float and double probes don't return value because dtrace doesn't currently support it
3172 DEFINE_SETSTATICFIELD(jfloat, float, Float, 'F', f
3173 , HOTSPOT_JNI_SETSTATICFLOATFIELD_ENTRY(env, clazz, (uintptr_t) fieldID),
3174 HOTSPOT_JNI_SETSTATICFLOATFIELD_RETURN())
3175 DEFINE_SETSTATICFIELD(jdouble, double, Double, 'D', d
3176 , HOTSPOT_JNI_SETSTATICDOUBLEFIELD_ENTRY(env, clazz, (uintptr_t) fieldID),
3177 HOTSPOT_JNI_SETSTATICDOUBLEFIELD_RETURN())
3178 #endif /* USDT2 */
3179
3180 //
3181 // String Operations
3182 //
3183
3184 // Unicode Interface
3185
3186 #ifndef USDT2
3187 DT_RETURN_MARK_DECL(NewString, jstring);
3188 #else /* USDT2 */
3189 DT_RETURN_MARK_DECL(NewString, jstring
3190 , HOTSPOT_JNI_NEWSTRING_RETURN(_ret_ref));
3191 #endif /* USDT2 */
3192
3193 JNI_ENTRY(jstring, jni_NewString(JNIEnv *env, const jchar *unicodeChars, jsize len))
3194 JNIWrapper("NewString");
3195 #ifndef USDT2
3196 DTRACE_PROBE3(hotspot_jni, NewString__entry, env, unicodeChars, len);
3197 #else /* USDT2 */
3198 HOTSPOT_JNI_NEWSTRING_ENTRY(
3199 env, (uint16_t *) unicodeChars, len);
3200 #endif /* USDT2 */
3201 jstring ret = NULL;
3202 DT_RETURN_MARK(NewString, jstring, (const jstring&)ret);
3203 oop string=java_lang_String::create_oop_from_unicode((jchar*) unicodeChars, len, CHECK_NULL);
3204 ret = (jstring) JNIHandles::make_local(env, string);
3205 return ret;
3206 JNI_END
3207
3208
3209 JNI_QUICK_ENTRY(jsize, jni_GetStringLength(JNIEnv *env, jstring string))
3210 JNIWrapper("GetStringLength");
3211 #ifndef USDT2
3212 DTRACE_PROBE2(hotspot_jni, GetStringLength__entry, env, string);
3213 #else /* USDT2 */
3214 HOTSPOT_JNI_GETSTRINGLENGTH_ENTRY(
3215 env, string);
3216 #endif /* USDT2 */
3217 jsize ret = java_lang_String::length(JNIHandles::resolve_non_null(string));
3218 #ifndef USDT2
3219 DTRACE_PROBE1(hotspot_jni, GetStringLength__return, ret);
3220 #else /* USDT2 */
3221 HOTSPOT_JNI_GETSTRINGLENGTH_RETURN(
3222 ret);
3223 #endif /* USDT2 */
3224 return ret;
3225 JNI_END
3226
3227
3228 JNI_QUICK_ENTRY(const jchar*, jni_GetStringChars(
3229 JNIEnv *env, jstring string, jboolean *isCopy))
3230 JNIWrapper("GetStringChars");
3231 #ifndef USDT2
3232 DTRACE_PROBE3(hotspot_jni, GetStringChars__entry, env, string, isCopy);
3233 #else /* USDT2 */
3234 HOTSPOT_JNI_GETSTRINGCHARS_ENTRY(
3235 env, string, (uintptr_t *) isCopy);
3236 #endif /* USDT2 */
3237 //%note jni_5
3238 if (isCopy != NULL) {
3239 *isCopy = JNI_TRUE;
3240 }
3241 oop s = JNIHandles::resolve_non_null(string);
3242 int s_len = java_lang_String::length(s);
3243 typeArrayOop s_value = java_lang_String::value(s);
3244 int s_offset = java_lang_String::offset(s);
3245 jchar* buf = NEW_C_HEAP_ARRAY(jchar, s_len + 1, mtInternal); // add one for zero termination
3246 if (s_len > 0) {
3247 memcpy(buf, s_value->char_at_addr(s_offset), sizeof(jchar)*s_len);
3248 }
3249 buf[s_len] = 0;
3250 #ifndef USDT2
3251 DTRACE_PROBE1(hotspot_jni, GetStringChars__return, buf);
3252 #else /* USDT2 */
3253 HOTSPOT_JNI_GETSTRINGCHARS_RETURN(
3254 buf);
3255 #endif /* USDT2 */
3256 return buf;
3257 JNI_END
3258
3259
3260 JNI_QUICK_ENTRY(void, jni_ReleaseStringChars(JNIEnv *env, jstring str, const jchar *chars))
3261 JNIWrapper("ReleaseStringChars");
3262 #ifndef USDT2
3263 DTRACE_PROBE3(hotspot_jni, ReleaseStringChars__entry, env, str, chars);
3264 #else /* USDT2 */
3265 HOTSPOT_JNI_RELEASESTRINGCHARS_ENTRY(
3266 env, str, (uint16_t *) chars);
3267 #endif /* USDT2 */
3268 //%note jni_6
3269 if (chars != NULL) {
3270 // Since String objects are supposed to be immutable, don't copy any
3271 // new data back. A bad user will have to go after the char array.
3272 FreeHeap((void*) chars);
3273 }
3274 #ifndef USDT2
3275 DTRACE_PROBE(hotspot_jni, ReleaseStringChars__return);
3276 #else /* USDT2 */
3277 HOTSPOT_JNI_RELEASESTRINGCHARS_RETURN(
3278 );
3279 #endif /* USDT2 */
3280 JNI_END
3281
3282
3283 // UTF Interface
3284
3285 #ifndef USDT2
3286 DT_RETURN_MARK_DECL(NewStringUTF, jstring);
3287 #else /* USDT2 */
3288 DT_RETURN_MARK_DECL(NewStringUTF, jstring
3289 , HOTSPOT_JNI_NEWSTRINGUTF_RETURN(_ret_ref));
3290 #endif /* USDT2 */
3291
3292 JNI_ENTRY(jstring, jni_NewStringUTF(JNIEnv *env, const char *bytes))
3293 JNIWrapper("NewStringUTF");
3294 #ifndef USDT2
3295 DTRACE_PROBE2(hotspot_jni, NewStringUTF__entry, env, bytes);
3296 #else /* USDT2 */
3297 HOTSPOT_JNI_NEWSTRINGUTF_ENTRY(
3298 env, (char *) bytes);
3299 #endif /* USDT2 */
3300 jstring ret;
3301 DT_RETURN_MARK(NewStringUTF, jstring, (const jstring&)ret);
3302
3303 oop result = java_lang_String::create_oop_from_str((char*) bytes, CHECK_NULL);
3304 ret = (jstring) JNIHandles::make_local(env, result);
3305 return ret;
3306 JNI_END
3307
3308
3309 JNI_ENTRY(jsize, jni_GetStringUTFLength(JNIEnv *env, jstring string))
3310 JNIWrapper("GetStringUTFLength");
3311 #ifndef USDT2
3312 DTRACE_PROBE2(hotspot_jni, GetStringUTFLength__entry, env, string);
3313 #else /* USDT2 */
3314 HOTSPOT_JNI_GETSTRINGUTFLENGTH_ENTRY(
3315 env, string);
3316 #endif /* USDT2 */
3317 jsize ret = java_lang_String::utf8_length(JNIHandles::resolve_non_null(string));
3318 #ifndef USDT2
3319 DTRACE_PROBE1(hotspot_jni, GetStringUTFLength__return, ret);
3320 #else /* USDT2 */
3321 HOTSPOT_JNI_GETSTRINGUTFLENGTH_RETURN(
3322 ret);
3323 #endif /* USDT2 */
3324 return ret;
3325 JNI_END
3326
3327
3328 JNI_ENTRY(const char*, jni_GetStringUTFChars(JNIEnv *env, jstring string, jboolean *isCopy))
3329 JNIWrapper("GetStringUTFChars");
3330 #ifndef USDT2
3331 DTRACE_PROBE3(hotspot_jni, GetStringUTFChars__entry, env, string, isCopy);
3332 #else /* USDT2 */
3333 HOTSPOT_JNI_GETSTRINGUTFCHARS_ENTRY(
3334 env, string, (uintptr_t *) isCopy);
3335 #endif /* USDT2 */
3336 oop java_string = JNIHandles::resolve_non_null(string);
3337 size_t length = java_lang_String::utf8_length(java_string);
3338 char* result = AllocateHeap(length + 1, mtInternal);
3339 java_lang_String::as_utf8_string(java_string, result, (int) length + 1);
3340 if (isCopy != NULL) *isCopy = JNI_TRUE;
3341 #ifndef USDT2
3342 DTRACE_PROBE1(hotspot_jni, GetStringUTFChars__return, result);
3343 #else /* USDT2 */
3344 HOTSPOT_JNI_GETSTRINGUTFCHARS_RETURN(
3345 result);
3346 #endif /* USDT2 */
3347 return result;
3348 JNI_END
3349
3350
3351 JNI_LEAF(void, jni_ReleaseStringUTFChars(JNIEnv *env, jstring str, const char *chars))
3352 JNIWrapper("ReleaseStringUTFChars");
3353 #ifndef USDT2
3354 DTRACE_PROBE3(hotspot_jni, ReleaseStringUTFChars__entry, env, str, chars);
3355 #else /* USDT2 */
3356 HOTSPOT_JNI_RELEASESTRINGUTFCHARS_ENTRY(
3357 env, str, (char *) chars);
3358 #endif /* USDT2 */
3359 if (chars != NULL) {
3360 FreeHeap((char*) chars);
3361 }
3362 #ifndef USDT2
3363 DTRACE_PROBE(hotspot_jni, ReleaseStringUTFChars__return);
3364 #else /* USDT2 */
3365 HOTSPOT_JNI_RELEASESTRINGUTFCHARS_RETURN(
3366 );
3367 #endif /* USDT2 */
3368 JNI_END
3369
3370
3371 JNI_QUICK_ENTRY(jsize, jni_GetArrayLength(JNIEnv *env, jarray array))
3372 JNIWrapper("GetArrayLength");
3373 #ifndef USDT2
3374 DTRACE_PROBE2(hotspot_jni, GetArrayLength__entry, env, array);
3375 #else /* USDT2 */
3376 HOTSPOT_JNI_GETARRAYLENGTH_ENTRY(
3377 env, array);
3378 #endif /* USDT2 */
3379 arrayOop a = arrayOop(JNIHandles::resolve_non_null(array));
3380 assert(a->is_array(), "must be array");
3381 jsize ret = a->length();
3382 #ifndef USDT2
3383 DTRACE_PROBE1(hotspot_jni, GetArrayLength__return, ret);
3384 #else /* USDT2 */
3385 HOTSPOT_JNI_GETARRAYLENGTH_RETURN(
3386 ret);
3387 #endif /* USDT2 */
3388 return ret;
3389 JNI_END
3390
3391
3392 //
3393 // Object Array Operations
3394 //
3395
3396 #ifndef USDT2
3397 DT_RETURN_MARK_DECL(NewObjectArray, jobjectArray);
3398 #else /* USDT2 */
3399 DT_RETURN_MARK_DECL(NewObjectArray, jobjectArray
3400 , HOTSPOT_JNI_NEWOBJECTARRAY_RETURN(_ret_ref));
3401 #endif /* USDT2 */
3402
3403 JNI_ENTRY(jobjectArray, jni_NewObjectArray(JNIEnv *env, jsize length, jclass elementClass, jobject initialElement))
3404 JNIWrapper("NewObjectArray");
3405 #ifndef USDT2
3406 DTRACE_PROBE4(hotspot_jni, NewObjectArray__entry, env, length, elementClass, initialElement);
3407 #else /* USDT2 */
3408 HOTSPOT_JNI_NEWOBJECTARRAY_ENTRY(
3409 env, length, elementClass, initialElement);
3410 #endif /* USDT2 */
3411 jobjectArray ret = NULL;
3412 DT_RETURN_MARK(NewObjectArray, jobjectArray, (const jobjectArray&)ret);
3413 KlassHandle ek(THREAD, java_lang_Class::as_Klass(JNIHandles::resolve_non_null(elementClass)));
3414 Klass* ako = ek()->array_klass(CHECK_NULL);
3415 KlassHandle ak = KlassHandle(THREAD, ako);
3416 ObjArrayKlass::cast(ak())->initialize(CHECK_NULL);
3417 objArrayOop result = ObjArrayKlass::cast(ak())->allocate(length, CHECK_NULL);
3418 oop initial_value = JNIHandles::resolve(initialElement);
3419 if (initial_value != NULL) { // array already initialized with NULL
3420 for (int index = 0; index < length; index++) {
3421 result->obj_at_put(index, initial_value);
3422 }
3423 }
3424 ret = (jobjectArray) JNIHandles::make_local(env, result);
3425 return ret;
3426 JNI_END
3427
3428 #ifndef USDT2
3429 DT_RETURN_MARK_DECL(GetObjectArrayElement, jobject);
3430 #else /* USDT2 */
3431 DT_RETURN_MARK_DECL(GetObjectArrayElement, jobject
3432 , HOTSPOT_JNI_GETOBJECTARRAYELEMENT_RETURN(_ret_ref));
3433 #endif /* USDT2 */
3434
3435 JNI_ENTRY(jobject, jni_GetObjectArrayElement(JNIEnv *env, jobjectArray array, jsize index))
3436 JNIWrapper("GetObjectArrayElement");
3437 #ifndef USDT2
3438 DTRACE_PROBE3(hotspot_jni, GetObjectArrayElement__entry, env, array, index);
3439 #else /* USDT2 */
3440 HOTSPOT_JNI_GETOBJECTARRAYELEMENT_ENTRY(
3441 env, array, index);
3442 #endif /* USDT2 */
3443 jobject ret = NULL;
3444 DT_RETURN_MARK(GetObjectArrayElement, jobject, (const jobject&)ret);
3445 objArrayOop a = objArrayOop(JNIHandles::resolve_non_null(array));
3446 if (a->is_within_bounds(index)) {
3447 ret = JNIHandles::make_local(env, a->obj_at(index));
3448 return ret;
3449 } else {
3450 char buf[jintAsStringSize];
3451 sprintf(buf, "%d", index);
3452 THROW_MSG_0(vmSymbols::java_lang_ArrayIndexOutOfBoundsException(), buf);
3453 }
3454 JNI_END
3455
3456 #ifndef USDT2
3457 DT_VOID_RETURN_MARK_DECL(SetObjectArrayElement);
3458 #else /* USDT2 */
3459 DT_VOID_RETURN_MARK_DECL(SetObjectArrayElement
3460 , HOTSPOT_JNI_SETOBJECTARRAYELEMENT_RETURN());
3461 #endif /* USDT2 */
3462
3463 JNI_ENTRY(void, jni_SetObjectArrayElement(JNIEnv *env, jobjectArray array, jsize index, jobject value))
3464 JNIWrapper("SetObjectArrayElement");
3465 #ifndef USDT2
3466 DTRACE_PROBE4(hotspot_jni, SetObjectArrayElement__entry, env, array, index, value);
3467 #else /* USDT2 */
3468 HOTSPOT_JNI_SETOBJECTARRAYELEMENT_ENTRY(
3469 env, array, index, value);
3470 #endif /* USDT2 */
3471 DT_VOID_RETURN_MARK(SetObjectArrayElement);
3472
3473 objArrayOop a = objArrayOop(JNIHandles::resolve_non_null(array));
3474 oop v = JNIHandles::resolve(value);
3475 if (a->is_within_bounds(index)) {
3476 if (v == NULL || v->is_a(ObjArrayKlass::cast(a->klass())->element_klass())) {
3477 a->obj_at_put(index, v);
3478 } else {
3479 THROW(vmSymbols::java_lang_ArrayStoreException());
3480 }
3481 } else {
3482 char buf[jintAsStringSize];
3483 sprintf(buf, "%d", index);
3484 THROW_MSG(vmSymbols::java_lang_ArrayIndexOutOfBoundsException(), buf);
3485 }
3486 JNI_END
3487
3488
3489 #ifndef USDT2
3490 #define DEFINE_NEWSCALARARRAY(Return,Allocator,Result) \
3491 \
3492 DT_RETURN_MARK_DECL(New##Result##Array, Return); \
3493 \
3494 JNI_ENTRY(Return, \
3495 jni_New##Result##Array(JNIEnv *env, jsize len)) \
3496 JNIWrapper("New" XSTR(Result) "Array"); \
3497 DTRACE_PROBE2(hotspot_jni, New##Result##Array__entry, env, len);\
3498 Return ret = NULL;\
3499 DT_RETURN_MARK(New##Result##Array, Return, (const Return&)ret);\
3500 \
3501 oop obj= oopFactory::Allocator(len, CHECK_0); \
3502 ret = (Return) JNIHandles::make_local(env, obj); \
3503 return ret;\
3504 JNI_END
3505
3506 DEFINE_NEWSCALARARRAY(jbooleanArray, new_boolArray, Boolean)
3507 DEFINE_NEWSCALARARRAY(jbyteArray, new_byteArray, Byte)
3508 DEFINE_NEWSCALARARRAY(jshortArray, new_shortArray, Short)
3509 DEFINE_NEWSCALARARRAY(jcharArray, new_charArray, Char)
3510 DEFINE_NEWSCALARARRAY(jintArray, new_intArray, Int)
3511 DEFINE_NEWSCALARARRAY(jlongArray, new_longArray, Long)
3512 DEFINE_NEWSCALARARRAY(jfloatArray, new_singleArray, Float)
3513 DEFINE_NEWSCALARARRAY(jdoubleArray, new_doubleArray, Double)
3514
3515 #else /* USDT2 */
3516
3517 #define DEFINE_NEWSCALARARRAY(Return,Allocator,Result \
3518 ,EntryProbe,ReturnProbe) \
3519 \
3520 DT_RETURN_MARK_DECL(New##Result##Array, Return \
3521 , ReturnProbe); \
3522 \
3523 JNI_ENTRY(Return, \
3524 jni_New##Result##Array(JNIEnv *env, jsize len)) \
3525 JNIWrapper("New" XSTR(Result) "Array"); \
3526 EntryProbe; \
3527 Return ret = NULL;\
3528 DT_RETURN_MARK(New##Result##Array, Return, (const Return&)ret);\
3529 \
3530 oop obj= oopFactory::Allocator(len, CHECK_0); \
3531 ret = (Return) JNIHandles::make_local(env, obj); \
3532 return ret;\
3533 JNI_END
3534
3535 DEFINE_NEWSCALARARRAY(jbooleanArray, new_boolArray, Boolean,
3536 HOTSPOT_JNI_NEWBOOLEANARRAY_ENTRY(env, len),
3537 HOTSPOT_JNI_NEWBOOLEANARRAY_RETURN(_ret_ref))
3538 DEFINE_NEWSCALARARRAY(jbyteArray, new_byteArray, Byte,
3539 HOTSPOT_JNI_NEWBYTEARRAY_ENTRY(env, len),
3540 HOTSPOT_JNI_NEWBYTEARRAY_RETURN(_ret_ref))
3541 DEFINE_NEWSCALARARRAY(jshortArray, new_shortArray, Short,
3542 HOTSPOT_JNI_NEWSHORTARRAY_ENTRY(env, len),
3543 HOTSPOT_JNI_NEWSHORTARRAY_RETURN(_ret_ref))
3544 DEFINE_NEWSCALARARRAY(jcharArray, new_charArray, Char,
3545 HOTSPOT_JNI_NEWCHARARRAY_ENTRY(env, len),
3546 HOTSPOT_JNI_NEWCHARARRAY_RETURN(_ret_ref))
3547 DEFINE_NEWSCALARARRAY(jintArray, new_intArray, Int,
3548 HOTSPOT_JNI_NEWINTARRAY_ENTRY(env, len),
3549 HOTSPOT_JNI_NEWINTARRAY_RETURN(_ret_ref))
3550 DEFINE_NEWSCALARARRAY(jlongArray, new_longArray, Long,
3551 HOTSPOT_JNI_NEWLONGARRAY_ENTRY(env, len),
3552 HOTSPOT_JNI_NEWLONGARRAY_RETURN(_ret_ref))
3553 DEFINE_NEWSCALARARRAY(jfloatArray, new_singleArray, Float,
3554 HOTSPOT_JNI_NEWFLOATARRAY_ENTRY(env, len),
3555 HOTSPOT_JNI_NEWFLOATARRAY_RETURN(_ret_ref))
3556 DEFINE_NEWSCALARARRAY(jdoubleArray, new_doubleArray, Double,
3557 HOTSPOT_JNI_NEWDOUBLEARRAY_ENTRY(env, len),
3558 HOTSPOT_JNI_NEWDOUBLEARRAY_RETURN(_ret_ref))
3559 #endif /* USDT2 */
3560
3561 // Return an address which will fault if the caller writes to it.
3562
3563 static char* get_bad_address() {
3564 static char* bad_address = NULL;
3565 if (bad_address == NULL) {
3566 size_t size = os::vm_allocation_granularity();
3567 bad_address = os::reserve_memory(size);
3568 if (bad_address != NULL) {
3569 os::protect_memory(bad_address, size, os::MEM_PROT_READ,
3570 /*is_committed*/false);
3571 }
3572 }
3573 return bad_address;
3574 }
3575
3576
3577 #ifndef USDT2
3578 #define DEFINE_GETSCALARARRAYELEMENTS(ElementTag,ElementType,Result, Tag) \
3579 \
3580 JNI_QUICK_ENTRY(ElementType*, \
3581 jni_Get##Result##ArrayElements(JNIEnv *env, ElementType##Array array, jboolean *isCopy)) \
3582 JNIWrapper("Get" XSTR(Result) "ArrayElements"); \
3583 DTRACE_PROBE3(hotspot_jni, Get##Result##ArrayElements__entry, env, array, isCopy);\
3584 /* allocate an chunk of memory in c land */ \
3585 typeArrayOop a = typeArrayOop(JNIHandles::resolve_non_null(array)); \
3586 ElementType* result; \
3587 int len = a->length(); \
3588 if (len == 0) { \
3589 /* Empty array: legal but useless, can't return NULL. \
3590 * Return a pointer to something useless. \
3591 * Avoid asserts in typeArrayOop. */ \
3592 result = (ElementType*)get_bad_address(); \
3593 } else { \
3594 result = NEW_C_HEAP_ARRAY(ElementType, len, mtInternal); \
3595 /* copy the array to the c chunk */ \
3596 memcpy(result, a->Tag##_at_addr(0), sizeof(ElementType)*len); \
3597 } \
3598 if (isCopy) *isCopy = JNI_TRUE; \
3599 DTRACE_PROBE1(hotspot_jni, Get##Result##ArrayElements__return, result);\
3600 return result; \
3601 JNI_END
3602
3603 DEFINE_GETSCALARARRAYELEMENTS(T_BOOLEAN, jboolean, Boolean, bool)
3604 DEFINE_GETSCALARARRAYELEMENTS(T_BYTE, jbyte, Byte, byte)
3605 DEFINE_GETSCALARARRAYELEMENTS(T_SHORT, jshort, Short, short)
3606 DEFINE_GETSCALARARRAYELEMENTS(T_CHAR, jchar, Char, char)
3607 DEFINE_GETSCALARARRAYELEMENTS(T_INT, jint, Int, int)
3608 DEFINE_GETSCALARARRAYELEMENTS(T_LONG, jlong, Long, long)
3609 DEFINE_GETSCALARARRAYELEMENTS(T_FLOAT, jfloat, Float, float)
3610 DEFINE_GETSCALARARRAYELEMENTS(T_DOUBLE, jdouble, Double, double)
3611
3612 #else /* USDT2 */
3613
3614 #define DEFINE_GETSCALARARRAYELEMENTS(ElementTag,ElementType,Result, Tag \
3615 , EntryProbe, ReturnProbe) \
3616 \
3617 JNI_QUICK_ENTRY(ElementType*, \
3618 jni_Get##Result##ArrayElements(JNIEnv *env, ElementType##Array array, jboolean *isCopy)) \
3619 JNIWrapper("Get" XSTR(Result) "ArrayElements"); \
3620 EntryProbe; \
3621 /* allocate an chunk of memory in c land */ \
3622 typeArrayOop a = typeArrayOop(JNIHandles::resolve_non_null(array)); \
3623 ElementType* result; \
3624 int len = a->length(); \
3625 if (len == 0) { \
3626 /* Empty array: legal but useless, can't return NULL. \
3627 * Return a pointer to something useless. \
3628 * Avoid asserts in typeArrayOop. */ \
3629 result = (ElementType*)get_bad_address(); \
3630 } else { \
3631 result = NEW_C_HEAP_ARRAY(ElementType, len, mtInternal); \
3632 /* copy the array to the c chunk */ \
3633 memcpy(result, a->Tag##_at_addr(0), sizeof(ElementType)*len); \
3634 } \
3635 if (isCopy) *isCopy = JNI_TRUE; \
3636 ReturnProbe; \
3637 return result; \
3638 JNI_END
3639
3640 DEFINE_GETSCALARARRAYELEMENTS(T_BOOLEAN, jboolean, Boolean, bool
3641 , HOTSPOT_JNI_GETBOOLEANARRAYELEMENTS_ENTRY(env, array, (uintptr_t *) isCopy),
3642 HOTSPOT_JNI_GETBOOLEANARRAYELEMENTS_RETURN((uintptr_t*)result))
3643 DEFINE_GETSCALARARRAYELEMENTS(T_BYTE, jbyte, Byte, byte
3644 , HOTSPOT_JNI_GETBYTEARRAYELEMENTS_ENTRY(env, array, (uintptr_t *) isCopy),
3645 HOTSPOT_JNI_GETBYTEARRAYELEMENTS_RETURN((char*)result))
3646 DEFINE_GETSCALARARRAYELEMENTS(T_SHORT, jshort, Short, short
3647 , HOTSPOT_JNI_GETSHORTARRAYELEMENTS_ENTRY(env, (uint16_t*) array, (uintptr_t *) isCopy),
3648 HOTSPOT_JNI_GETSHORTARRAYELEMENTS_RETURN((uint16_t*)result))
3649 DEFINE_GETSCALARARRAYELEMENTS(T_CHAR, jchar, Char, char
3650 , HOTSPOT_JNI_GETCHARARRAYELEMENTS_ENTRY(env, (uint16_t*) array, (uintptr_t *) isCopy),
3651 HOTSPOT_JNI_GETCHARARRAYELEMENTS_RETURN(result))
3652 DEFINE_GETSCALARARRAYELEMENTS(T_INT, jint, Int, int
3653 , HOTSPOT_JNI_GETINTARRAYELEMENTS_ENTRY(env, array, (uintptr_t *) isCopy),
3654 HOTSPOT_JNI_GETINTARRAYELEMENTS_RETURN((uint32_t*)result))
3655 DEFINE_GETSCALARARRAYELEMENTS(T_LONG, jlong, Long, long
3656 , HOTSPOT_JNI_GETLONGARRAYELEMENTS_ENTRY(env, array, (uintptr_t *) isCopy),
3657 HOTSPOT_JNI_GETLONGARRAYELEMENTS_RETURN(((uintptr_t*)result)))
3658 // Float and double probes don't return value because dtrace doesn't currently support it
3659 DEFINE_GETSCALARARRAYELEMENTS(T_FLOAT, jfloat, Float, float
3660 , HOTSPOT_JNI_GETFLOATARRAYELEMENTS_ENTRY(env, array, (uintptr_t *) isCopy),
3661 HOTSPOT_JNI_GETFLOATARRAYELEMENTS_RETURN(result))
3662 DEFINE_GETSCALARARRAYELEMENTS(T_DOUBLE, jdouble, Double, double
3663 , HOTSPOT_JNI_GETDOUBLEARRAYELEMENTS_ENTRY(env, array, (uintptr_t *) isCopy),
3664 HOTSPOT_JNI_GETDOUBLEARRAYELEMENTS_RETURN(result))
3665 #endif /* USDT2 */
3666
3667 #ifndef USDT2
3668 #define DEFINE_RELEASESCALARARRAYELEMENTS(ElementTag,ElementType,Result,Tag) \
3669 \
3670 JNI_QUICK_ENTRY(void, \
3671 jni_Release##Result##ArrayElements(JNIEnv *env, ElementType##Array array, \
3672 ElementType *buf, jint mode)) \
3673 JNIWrapper("Release" XSTR(Result) "ArrayElements"); \
3674 DTRACE_PROBE4(hotspot_jni, Release##Result##ArrayElements__entry, env, array, buf, mode);\
3675 typeArrayOop a = typeArrayOop(JNIHandles::resolve_non_null(array)); \
3676 int len = a->length(); \
3677 if (len != 0) { /* Empty array: nothing to free or copy. */ \
3678 if ((mode == 0) || (mode == JNI_COMMIT)) { \
3679 memcpy(a->Tag##_at_addr(0), buf, sizeof(ElementType)*len); \
3680 } \
3681 if ((mode == 0) || (mode == JNI_ABORT)) { \
3682 FreeHeap(buf); \
3683 } \
3684 } \
3685 DTRACE_PROBE(hotspot_jni, Release##Result##ArrayElements__return);\
3686 JNI_END
3687
3688 DEFINE_RELEASESCALARARRAYELEMENTS(T_BOOLEAN, jboolean, Boolean, bool)
3689 DEFINE_RELEASESCALARARRAYELEMENTS(T_BYTE, jbyte, Byte, byte)
3690 DEFINE_RELEASESCALARARRAYELEMENTS(T_SHORT, jshort, Short, short)
3691 DEFINE_RELEASESCALARARRAYELEMENTS(T_CHAR, jchar, Char, char)
3692 DEFINE_RELEASESCALARARRAYELEMENTS(T_INT, jint, Int, int)
3693 DEFINE_RELEASESCALARARRAYELEMENTS(T_LONG, jlong, Long, long)
3694 DEFINE_RELEASESCALARARRAYELEMENTS(T_FLOAT, jfloat, Float, float)
3695 DEFINE_RELEASESCALARARRAYELEMENTS(T_DOUBLE, jdouble, Double, double)
3696
3697 #else /* USDT2 */
3698
3699 #define DEFINE_RELEASESCALARARRAYELEMENTS(ElementTag,ElementType,Result,Tag \
3700 , EntryProbe, ReturnProbe);\
3701 \
3702 JNI_QUICK_ENTRY(void, \
3703 jni_Release##Result##ArrayElements(JNIEnv *env, ElementType##Array array, \
3704 ElementType *buf, jint mode)) \
3705 JNIWrapper("Release" XSTR(Result) "ArrayElements"); \
3706 EntryProbe; \
3707 typeArrayOop a = typeArrayOop(JNIHandles::resolve_non_null(array)); \
3708 int len = a->length(); \
3709 if (len != 0) { /* Empty array: nothing to free or copy. */ \
3710 if ((mode == 0) || (mode == JNI_COMMIT)) { \
3711 memcpy(a->Tag##_at_addr(0), buf, sizeof(ElementType)*len); \
3712 } \
3713 if ((mode == 0) || (mode == JNI_ABORT)) { \
3714 FreeHeap(buf); \
3715 } \
3716 } \
3717 ReturnProbe; \
3718 JNI_END
3719
3720 DEFINE_RELEASESCALARARRAYELEMENTS(T_BOOLEAN, jboolean, Boolean, bool
3721 , HOTSPOT_JNI_RELEASEBOOLEANARRAYELEMENTS_ENTRY(env, array, (uintptr_t *) buf, mode),
3722 HOTSPOT_JNI_RELEASEBOOLEANARRAYELEMENTS_RETURN())
3723 DEFINE_RELEASESCALARARRAYELEMENTS(T_BYTE, jbyte, Byte, byte
3724 , HOTSPOT_JNI_RELEASEBYTEARRAYELEMENTS_ENTRY(env, array, (char *) buf, mode),
3725 HOTSPOT_JNI_RELEASEBYTEARRAYELEMENTS_RETURN())
3726 DEFINE_RELEASESCALARARRAYELEMENTS(T_SHORT, jshort, Short, short
3727 , HOTSPOT_JNI_RELEASESHORTARRAYELEMENTS_ENTRY(env, array, (uint16_t *) buf, mode),
3728 HOTSPOT_JNI_RELEASESHORTARRAYELEMENTS_RETURN())
3729 DEFINE_RELEASESCALARARRAYELEMENTS(T_CHAR, jchar, Char, char
3730 , HOTSPOT_JNI_RELEASECHARARRAYELEMENTS_ENTRY(env, array, (uint16_t *) buf, mode),
3731 HOTSPOT_JNI_RELEASECHARARRAYELEMENTS_RETURN())
3732 DEFINE_RELEASESCALARARRAYELEMENTS(T_INT, jint, Int, int
3733 , HOTSPOT_JNI_RELEASEINTARRAYELEMENTS_ENTRY(env, array, (uint32_t *) buf, mode),
3734 HOTSPOT_JNI_RELEASEINTARRAYELEMENTS_RETURN())
3735 DEFINE_RELEASESCALARARRAYELEMENTS(T_LONG, jlong, Long, long
3736 , HOTSPOT_JNI_RELEASELONGARRAYELEMENTS_ENTRY(env, array, (uintptr_t *) buf, mode),
3737 HOTSPOT_JNI_RELEASELONGARRAYELEMENTS_RETURN())
3738 DEFINE_RELEASESCALARARRAYELEMENTS(T_FLOAT, jfloat, Float, float
3739 , HOTSPOT_JNI_RELEASEFLOATARRAYELEMENTS_ENTRY(env, array, (float *) buf, mode),
3740 HOTSPOT_JNI_RELEASEFLOATARRAYELEMENTS_RETURN())
3741 DEFINE_RELEASESCALARARRAYELEMENTS(T_DOUBLE, jdouble, Double, double
3742 , HOTSPOT_JNI_RELEASEDOUBLEARRAYELEMENTS_ENTRY(env, array, (double *) buf, mode),
3743 HOTSPOT_JNI_RELEASEDOUBLEARRAYELEMENTS_RETURN())
3744 #endif /* USDT2 */
3745
3746 #ifndef USDT2
3747 #define DEFINE_GETSCALARARRAYREGION(ElementTag,ElementType,Result, Tag) \
3748 DT_VOID_RETURN_MARK_DECL(Get##Result##ArrayRegion);\
3749 \
3750 JNI_ENTRY(void, \
3751 jni_Get##Result##ArrayRegion(JNIEnv *env, ElementType##Array array, jsize start, \
3752 jsize len, ElementType *buf)) \
3753 JNIWrapper("Get" XSTR(Result) "ArrayRegion"); \
3754 DTRACE_PROBE5(hotspot_jni, Get##Result##ArrayRegion__entry, env, array, start, len, buf);\
3755 DT_VOID_RETURN_MARK(Get##Result##ArrayRegion); \
3756 typeArrayOop src = typeArrayOop(JNIHandles::resolve_non_null(array)); \
3757 if (start < 0 || len < 0 || ((unsigned int)start + (unsigned int)len > (unsigned int)src->length())) { \
3758 THROW(vmSymbols::java_lang_ArrayIndexOutOfBoundsException()); \
3759 } else { \
3760 if (len > 0) { \
3761 int sc = TypeArrayKlass::cast(src->klass())->log2_element_size(); \
3762 memcpy((u_char*) buf, \
3763 (u_char*) src->Tag##_at_addr(start), \
3764 len << sc); \
3765 } \
3766 } \
3767 JNI_END
3768
3769 DEFINE_GETSCALARARRAYREGION(T_BOOLEAN, jboolean,Boolean, bool)
3770 DEFINE_GETSCALARARRAYREGION(T_BYTE, jbyte, Byte, byte)
3771 DEFINE_GETSCALARARRAYREGION(T_SHORT, jshort, Short, short)
3772 DEFINE_GETSCALARARRAYREGION(T_CHAR, jchar, Char, char)
3773 DEFINE_GETSCALARARRAYREGION(T_INT, jint, Int, int)
3774 DEFINE_GETSCALARARRAYREGION(T_LONG, jlong, Long, long)
3775 DEFINE_GETSCALARARRAYREGION(T_FLOAT, jfloat, Float, float)
3776 DEFINE_GETSCALARARRAYREGION(T_DOUBLE, jdouble, Double, double)
3777
3778 #else /* USDT2 */
3779
3780 #define DEFINE_GETSCALARARRAYREGION(ElementTag,ElementType,Result, Tag \
3781 , EntryProbe, ReturnProbe); \
3782 DT_VOID_RETURN_MARK_DECL(Get##Result##ArrayRegion \
3783 , ReturnProbe); \
3784 \
3785 JNI_ENTRY(void, \
3786 jni_Get##Result##ArrayRegion(JNIEnv *env, ElementType##Array array, jsize start, \
3787 jsize len, ElementType *buf)) \
3788 JNIWrapper("Get" XSTR(Result) "ArrayRegion"); \
3789 EntryProbe; \
3790 DT_VOID_RETURN_MARK(Get##Result##ArrayRegion); \
3791 typeArrayOop src = typeArrayOop(JNIHandles::resolve_non_null(array)); \
3792 if (start < 0 || len < 0 || ((unsigned int)start + (unsigned int)len > (unsigned int)src->length())) { \
3793 THROW(vmSymbols::java_lang_ArrayIndexOutOfBoundsException()); \
3794 } else { \
3795 if (len > 0) { \
3796 int sc = TypeArrayKlass::cast(src->klass())->log2_element_size(); \
3797 memcpy((u_char*) buf, \
3798 (u_char*) src->Tag##_at_addr(start), \
3799 len << sc); \
3800 } \
3801 } \
3802 JNI_END
3803
3804 DEFINE_GETSCALARARRAYREGION(T_BOOLEAN, jboolean,Boolean, bool
3805 , HOTSPOT_JNI_GETBOOLEANARRAYREGION_ENTRY(env, array, start, len, (uintptr_t *) buf),
3806 HOTSPOT_JNI_GETBOOLEANARRAYREGION_RETURN());
3807 DEFINE_GETSCALARARRAYREGION(T_BYTE, jbyte, Byte, byte
3808 , HOTSPOT_JNI_GETBYTEARRAYREGION_ENTRY(env, array, start, len, (char *) buf),
3809 HOTSPOT_JNI_GETBYTEARRAYREGION_RETURN());
3810 DEFINE_GETSCALARARRAYREGION(T_SHORT, jshort, Short, short
3811 , HOTSPOT_JNI_GETSHORTARRAYREGION_ENTRY(env, array, start, len, (uint16_t *) buf),
3812 HOTSPOT_JNI_GETSHORTARRAYREGION_RETURN());
3813 DEFINE_GETSCALARARRAYREGION(T_CHAR, jchar, Char, char
3814 , HOTSPOT_JNI_GETCHARARRAYREGION_ENTRY(env, array, start, len, (uint16_t*) buf),
3815 HOTSPOT_JNI_GETCHARARRAYREGION_RETURN());
3816 DEFINE_GETSCALARARRAYREGION(T_INT, jint, Int, int
3817 , HOTSPOT_JNI_GETINTARRAYREGION_ENTRY(env, array, start, len, (uint32_t*) buf),
3818 HOTSPOT_JNI_GETINTARRAYREGION_RETURN());
3819 DEFINE_GETSCALARARRAYREGION(T_LONG, jlong, Long, long
3820 , HOTSPOT_JNI_GETLONGARRAYREGION_ENTRY(env, array, start, len, (uintptr_t *) buf),
3821 HOTSPOT_JNI_GETLONGARRAYREGION_RETURN());
3822 DEFINE_GETSCALARARRAYREGION(T_FLOAT, jfloat, Float, float
3823 , HOTSPOT_JNI_GETFLOATARRAYREGION_ENTRY(env, array, start, len, (float *) buf),
3824 HOTSPOT_JNI_GETFLOATARRAYREGION_RETURN());
3825 DEFINE_GETSCALARARRAYREGION(T_DOUBLE, jdouble, Double, double
3826 , HOTSPOT_JNI_GETDOUBLEARRAYREGION_ENTRY(env, array, start, len, (double *) buf),
3827 HOTSPOT_JNI_GETDOUBLEARRAYREGION_RETURN());
3828 #endif /* USDT2 */
3829
3830 #ifndef USDT2
3831 #define DEFINE_SETSCALARARRAYREGION(ElementTag,ElementType,Result, Tag) \
3832 DT_VOID_RETURN_MARK_DECL(Set##Result##ArrayRegion);\
3833 \
3834 JNI_ENTRY(void, \
3835 jni_Set##Result##ArrayRegion(JNIEnv *env, ElementType##Array array, jsize start, \
3836 jsize len, const ElementType *buf)) \
3837 JNIWrapper("Set" XSTR(Result) "ArrayRegion"); \
3838 DTRACE_PROBE5(hotspot_jni, Set##Result##ArrayRegion__entry, env, array, start, len, buf);\
3839 DT_VOID_RETURN_MARK(Set##Result##ArrayRegion); \
3840 typeArrayOop dst = typeArrayOop(JNIHandles::resolve_non_null(array)); \
3841 if (start < 0 || len < 0 || ((unsigned int)start + (unsigned int)len > (unsigned int)dst->length())) { \
3842 THROW(vmSymbols::java_lang_ArrayIndexOutOfBoundsException()); \
3843 } else { \
3844 if (len > 0) { \
3845 int sc = TypeArrayKlass::cast(dst->klass())->log2_element_size(); \
3846 memcpy((u_char*) dst->Tag##_at_addr(start), \
3847 (u_char*) buf, \
3848 len << sc); \
3849 } \
3850 } \
3851 JNI_END
3852
3853 DEFINE_SETSCALARARRAYREGION(T_BOOLEAN, jboolean, Boolean, bool)
3854 DEFINE_SETSCALARARRAYREGION(T_BYTE, jbyte, Byte, byte)
3855 DEFINE_SETSCALARARRAYREGION(T_SHORT, jshort, Short, short)
3856 DEFINE_SETSCALARARRAYREGION(T_CHAR, jchar, Char, char)
3857 DEFINE_SETSCALARARRAYREGION(T_INT, jint, Int, int)
3858 DEFINE_SETSCALARARRAYREGION(T_LONG, jlong, Long, long)
3859 DEFINE_SETSCALARARRAYREGION(T_FLOAT, jfloat, Float, float)
3860 DEFINE_SETSCALARARRAYREGION(T_DOUBLE, jdouble, Double, double)
3861
3862 #else /* USDT2 */
3863
3864 #define DEFINE_SETSCALARARRAYREGION(ElementTag,ElementType,Result, Tag \
3865 , EntryProbe, ReturnProbe); \
3866 DT_VOID_RETURN_MARK_DECL(Set##Result##ArrayRegion \
3867 ,ReturnProbe); \
3868 \
3869 JNI_ENTRY(void, \
3870 jni_Set##Result##ArrayRegion(JNIEnv *env, ElementType##Array array, jsize start, \
3871 jsize len, const ElementType *buf)) \
3872 JNIWrapper("Set" XSTR(Result) "ArrayRegion"); \
3873 EntryProbe; \
3874 DT_VOID_RETURN_MARK(Set##Result##ArrayRegion); \
3875 typeArrayOop dst = typeArrayOop(JNIHandles::resolve_non_null(array)); \
3876 if (start < 0 || len < 0 || ((unsigned int)start + (unsigned int)len > (unsigned int)dst->length())) { \
3877 THROW(vmSymbols::java_lang_ArrayIndexOutOfBoundsException()); \
3878 } else { \
3879 if (len > 0) { \
3880 int sc = TypeArrayKlass::cast(dst->klass())->log2_element_size(); \
3881 memcpy((u_char*) dst->Tag##_at_addr(start), \
3882 (u_char*) buf, \
3883 len << sc); \
3884 } \
3885 } \
3886 JNI_END
3887
3888 DEFINE_SETSCALARARRAYREGION(T_BOOLEAN, jboolean, Boolean, bool
3889 , HOTSPOT_JNI_SETBOOLEANARRAYREGION_ENTRY(env, array, start, len, (uintptr_t *)buf),
3890 HOTSPOT_JNI_SETBOOLEANARRAYREGION_RETURN())
3891 DEFINE_SETSCALARARRAYREGION(T_BYTE, jbyte, Byte, byte
3892 , HOTSPOT_JNI_SETBYTEARRAYREGION_ENTRY(env, array, start, len, (char *) buf),
3893 HOTSPOT_JNI_SETBYTEARRAYREGION_RETURN())
3894 DEFINE_SETSCALARARRAYREGION(T_SHORT, jshort, Short, short
3895 , HOTSPOT_JNI_SETSHORTARRAYREGION_ENTRY(env, array, start, len, (uint16_t *) buf),
3896 HOTSPOT_JNI_SETSHORTARRAYREGION_RETURN())
3897 DEFINE_SETSCALARARRAYREGION(T_CHAR, jchar, Char, char
3898 , HOTSPOT_JNI_SETCHARARRAYREGION_ENTRY(env, array, start, len, (uint16_t *) buf),
3899 HOTSPOT_JNI_SETCHARARRAYREGION_RETURN())
3900 DEFINE_SETSCALARARRAYREGION(T_INT, jint, Int, int
3901 , HOTSPOT_JNI_SETINTARRAYREGION_ENTRY(env, array, start, len, (uint32_t *) buf),
3902 HOTSPOT_JNI_SETINTARRAYREGION_RETURN())
3903 DEFINE_SETSCALARARRAYREGION(T_LONG, jlong, Long, long
3904 , HOTSPOT_JNI_SETLONGARRAYREGION_ENTRY(env, array, start, len, (uintptr_t *) buf),
3905 HOTSPOT_JNI_SETLONGARRAYREGION_RETURN())
3906 DEFINE_SETSCALARARRAYREGION(T_FLOAT, jfloat, Float, float
3907 , HOTSPOT_JNI_SETFLOATARRAYREGION_ENTRY(env, array, start, len, (float *) buf),
3908 HOTSPOT_JNI_SETFLOATARRAYREGION_RETURN())
3909 DEFINE_SETSCALARARRAYREGION(T_DOUBLE, jdouble, Double, double
3910 , HOTSPOT_JNI_SETDOUBLEARRAYREGION_ENTRY(env, array, start, len, (double *) buf),
3911 HOTSPOT_JNI_SETDOUBLEARRAYREGION_RETURN())
3912 #endif /* USDT2 */
3913
3914
3915 //
3916 // Interception of natives
3917 //
3918
3919 // The RegisterNatives call being attempted tried to register with a method that
3920 // is not native. Ask JVM TI what prefixes have been specified. Then check
3921 // to see if the native method is now wrapped with the prefixes. See the
3922 // SetNativeMethodPrefix(es) functions in the JVM TI Spec for details.
3923 static Method* find_prefixed_native(KlassHandle k,
3924 Symbol* name, Symbol* signature, TRAPS) {
3925 #if INCLUDE_JVMTI
3926 ResourceMark rm(THREAD);
3927 Method* method;
3928 int name_len = name->utf8_length();
3929 char* name_str = name->as_utf8();
3930 int prefix_count;
3931 char** prefixes = JvmtiExport::get_all_native_method_prefixes(&prefix_count);
3932 for (int i = 0; i < prefix_count; i++) {
3933 char* prefix = prefixes[i];
3934 int prefix_len = (int)strlen(prefix);
3935
3936 // try adding this prefix to the method name and see if it matches another method name
3937 int trial_len = name_len + prefix_len;
3938 char* trial_name_str = NEW_RESOURCE_ARRAY(char, trial_len + 1);
3939 strcpy(trial_name_str, prefix);
3940 strcat(trial_name_str, name_str);
3941 TempNewSymbol trial_name = SymbolTable::probe(trial_name_str, trial_len);
3942 if (trial_name == NULL) {
3943 continue; // no such symbol, so this prefix wasn't used, try the next prefix
3944 }
3945 method = k()->lookup_method(trial_name, signature);
3946 if (method == NULL) {
3947 continue; // signature doesn't match, try the next prefix
3948 }
3949 if (method->is_native()) {
3950 method->set_is_prefixed_native();
3951 return method; // wahoo, we found a prefixed version of the method, return it
3952 }
3953 // found as non-native, so prefix is good, add it, probably just need more prefixes
3954 name_len = trial_len;
3955 name_str = trial_name_str;
3956 }
3957 #endif // INCLUDE_JVMTI
3958 return NULL; // not found
3959 }
3960
3961 static bool register_native(KlassHandle k, Symbol* name, Symbol* signature, address entry, TRAPS) {
3962 Method* method = k()->lookup_method(name, signature);
3963 if (method == NULL) {
3964 ResourceMark rm;
3965 stringStream st;
3966 st.print("Method %s name or signature does not match",
3967 Method::name_and_sig_as_C_string(k(), name, signature));
3968 THROW_MSG_(vmSymbols::java_lang_NoSuchMethodError(), st.as_string(), false);
3969 }
3970 if (!method->is_native()) {
3971 // trying to register to a non-native method, see if a JVM TI agent has added prefix(es)
3972 method = find_prefixed_native(k, name, signature, THREAD);
3973 if (method == NULL) {
3974 ResourceMark rm;
3975 stringStream st;
3976 st.print("Method %s is not declared as native",
3977 Method::name_and_sig_as_C_string(k(), name, signature));
3978 THROW_MSG_(vmSymbols::java_lang_NoSuchMethodError(), st.as_string(), false);
3979 }
3980 }
3981
3982 if (entry != NULL) {
3983 method->set_native_function(entry,
3984 Method::native_bind_event_is_interesting);
3985 } else {
3986 method->clear_native_function();
3987 }
3988 if (PrintJNIResolving) {
3989 ResourceMark rm(THREAD);
3990 tty->print_cr("[Registering JNI native method %s.%s]",
3991 method->method_holder()->external_name(),
3992 method->name()->as_C_string());
3993 }
3994 return true;
3995 }
3996
3997 #ifndef USDT2
3998 DT_RETURN_MARK_DECL(RegisterNatives, jint);
3999 #else /* USDT2 */
4000 DT_RETURN_MARK_DECL(RegisterNatives, jint
4001 , HOTSPOT_JNI_REGISTERNATIVES_RETURN(_ret_ref));
4002 #endif /* USDT2 */
4003
4004 JNI_ENTRY(jint, jni_RegisterNatives(JNIEnv *env, jclass clazz,
4005 const JNINativeMethod *methods,
4006 jint nMethods))
4007 JNIWrapper("RegisterNatives");
4008 #ifndef USDT2
4009 DTRACE_PROBE4(hotspot_jni, RegisterNatives__entry, env, clazz, methods, nMethods);
4010 #else /* USDT2 */
4011 HOTSPOT_JNI_REGISTERNATIVES_ENTRY(
4012 env, clazz, (void *) methods, nMethods);
4013 #endif /* USDT2 */
4014 jint ret = 0;
4015 DT_RETURN_MARK(RegisterNatives, jint, (const jint&)ret);
4016
4017 KlassHandle h_k(thread, java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz)));
4018
4019 for (int index = 0; index < nMethods; index++) {
4020 const char* meth_name = methods[index].name;
4021 const char* meth_sig = methods[index].signature;
4022 int meth_name_len = (int)strlen(meth_name);
4023
4024 // The class should have been loaded (we have an instance of the class
4025 // passed in) so the method and signature should already be in the symbol
4026 // table. If they're not there, the method doesn't exist.
4027 TempNewSymbol name = SymbolTable::probe(meth_name, meth_name_len);
4028 TempNewSymbol signature = SymbolTable::probe(meth_sig, (int)strlen(meth_sig));
4029
4030 if (name == NULL || signature == NULL) {
4031 ResourceMark rm;
4032 stringStream st;
4033 st.print("Method %s.%s%s not found", h_k()->external_name(), meth_name, meth_sig);
4034 // Must return negative value on failure
4035 THROW_MSG_(vmSymbols::java_lang_NoSuchMethodError(), st.as_string(), -1);
4036 }
4037
4038 bool res = register_native(h_k, name, signature,
4039 (address) methods[index].fnPtr, THREAD);
4040 if (!res) {
4041 ret = -1;
4042 break;
4043 }
4044 }
4045 return ret;
4046 JNI_END
4047
4048
4049 JNI_ENTRY(jint, jni_UnregisterNatives(JNIEnv *env, jclass clazz))
4050 JNIWrapper("UnregisterNatives");
4051 #ifndef USDT2
4052 DTRACE_PROBE2(hotspot_jni, UnregisterNatives__entry, env, clazz);
4053 #else /* USDT2 */
4054 HOTSPOT_JNI_UNREGISTERNATIVES_ENTRY(
4055 env, clazz);
4056 #endif /* USDT2 */
4057 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz));
4058 //%note jni_2
4059 if (k->oop_is_instance()) {
4060 for (int index = 0; index < InstanceKlass::cast(k)->methods()->length(); index++) {
4061 Method* m = InstanceKlass::cast(k)->methods()->at(index);
4062 if (m->is_native()) {
4063 m->clear_native_function();
4064 m->set_signature_handler(NULL);
4065 }
4066 }
4067 }
4068 #ifndef USDT2
4069 DTRACE_PROBE1(hotspot_jni, UnregisterNatives__return, 0);
4070 #else /* USDT2 */
4071 HOTSPOT_JNI_UNREGISTERNATIVES_RETURN(
4072 0);
4073 #endif /* USDT2 */
4074 return 0;
4075 JNI_END
4076
4077 //
4078 // Monitor functions
4079 //
4080
4081 #ifndef USDT2
4082 DT_RETURN_MARK_DECL(MonitorEnter, jint);
4083 #else /* USDT2 */
4084 DT_RETURN_MARK_DECL(MonitorEnter, jint
4085 , HOTSPOT_JNI_MONITORENTER_RETURN(_ret_ref));
4086 #endif /* USDT2 */
4087
4088 JNI_ENTRY(jint, jni_MonitorEnter(JNIEnv *env, jobject jobj))
4089 #ifndef USDT2
4090 DTRACE_PROBE2(hotspot_jni, MonitorEnter__entry, env, jobj);
4091 #else /* USDT2 */
4092 HOTSPOT_JNI_MONITORENTER_ENTRY(
4093 env, jobj);
4094 #endif /* USDT2 */
4095 jint ret = JNI_ERR;
4096 DT_RETURN_MARK(MonitorEnter, jint, (const jint&)ret);
4097
4098 // If the object is null, we can't do anything with it
4099 if (jobj == NULL) {
4100 THROW_(vmSymbols::java_lang_NullPointerException(), JNI_ERR);
4101 }
4102
4103 Handle obj(thread, JNIHandles::resolve_non_null(jobj));
4104 ObjectSynchronizer::jni_enter(obj, CHECK_(JNI_ERR));
4105 ret = JNI_OK;
4106 return ret;
4107 JNI_END
4108
4109 #ifndef USDT2
4110 DT_RETURN_MARK_DECL(MonitorExit, jint);
4111 #else /* USDT2 */
4112 DT_RETURN_MARK_DECL(MonitorExit, jint
4113 , HOTSPOT_JNI_MONITOREXIT_RETURN(_ret_ref));
4114 #endif /* USDT2 */
4115
4116 JNI_ENTRY(jint, jni_MonitorExit(JNIEnv *env, jobject jobj))
4117 #ifndef USDT2
4118 DTRACE_PROBE2(hotspot_jni, MonitorExit__entry, env, jobj);
4119 #else /* USDT2 */
4120 HOTSPOT_JNI_MONITOREXIT_ENTRY(
4121 env, jobj);
4122 #endif /* USDT2 */
4123 jint ret = JNI_ERR;
4124 DT_RETURN_MARK(MonitorExit, jint, (const jint&)ret);
4125
4126 // Don't do anything with a null object
4127 if (jobj == NULL) {
4128 THROW_(vmSymbols::java_lang_NullPointerException(), JNI_ERR);
4129 }
4130
4131 Handle obj(THREAD, JNIHandles::resolve_non_null(jobj));
4132 ObjectSynchronizer::jni_exit(obj(), CHECK_(JNI_ERR));
4133
4134 ret = JNI_OK;
4135 return ret;
4136 JNI_END
4137
4138 //
4139 // Extensions
4140 //
4141
4142 #ifndef USDT2
4143 DT_VOID_RETURN_MARK_DECL(GetStringRegion);
4144 #else /* USDT2 */
4145 DT_VOID_RETURN_MARK_DECL(GetStringRegion
4146 , HOTSPOT_JNI_GETSTRINGREGION_RETURN());
4147 #endif /* USDT2 */
4148
4149 JNI_ENTRY(void, jni_GetStringRegion(JNIEnv *env, jstring string, jsize start, jsize len, jchar *buf))
4150 JNIWrapper("GetStringRegion");
4151 #ifndef USDT2
4152 DTRACE_PROBE5(hotspot_jni, GetStringRegion__entry, env, string, start, len, buf);
4153 #else /* USDT2 */
4154 HOTSPOT_JNI_GETSTRINGREGION_ENTRY(
4155 env, string, start, len, buf);
4156 #endif /* USDT2 */
4157 DT_VOID_RETURN_MARK(GetStringRegion);
4158 oop s = JNIHandles::resolve_non_null(string);
4159 int s_len = java_lang_String::length(s);
4160 if (start < 0 || len < 0 || start + len > s_len) {
4161 THROW(vmSymbols::java_lang_StringIndexOutOfBoundsException());
4162 } else {
4163 if (len > 0) {
4164 int s_offset = java_lang_String::offset(s);
4165 typeArrayOop s_value = java_lang_String::value(s);
4166 memcpy(buf, s_value->char_at_addr(s_offset+start), sizeof(jchar)*len);
4167 }
4168 }
4169 JNI_END
4170
4171 #ifndef USDT2
4172 DT_VOID_RETURN_MARK_DECL(GetStringUTFRegion);
4173 #else /* USDT2 */
4174 DT_VOID_RETURN_MARK_DECL(GetStringUTFRegion
4175 , HOTSPOT_JNI_GETSTRINGUTFREGION_RETURN());
4176 #endif /* USDT2 */
4177
4178 JNI_ENTRY(void, jni_GetStringUTFRegion(JNIEnv *env, jstring string, jsize start, jsize len, char *buf))
4179 JNIWrapper("GetStringUTFRegion");
4180 #ifndef USDT2
4181 DTRACE_PROBE5(hotspot_jni, GetStringUTFRegion__entry, env, string, start, len, buf);
4182 #else /* USDT2 */
4183 HOTSPOT_JNI_GETSTRINGUTFREGION_ENTRY(
4184 env, string, start, len, buf);
4185 #endif /* USDT2 */
4186 DT_VOID_RETURN_MARK(GetStringUTFRegion);
4187 oop s = JNIHandles::resolve_non_null(string);
4188 int s_len = java_lang_String::length(s);
4189 if (start < 0 || len < 0 || start + len > s_len) {
4190 THROW(vmSymbols::java_lang_StringIndexOutOfBoundsException());
4191 } else {
4192 //%note jni_7
4193 if (len > 0) {
4194 ResourceMark rm(THREAD);
4195 char *utf_region = java_lang_String::as_utf8_string(s, start, len);
4196 int utf_len = (int)strlen(utf_region);
4197 memcpy(buf, utf_region, utf_len);
4198 buf[utf_len] = 0;
4199 } else {
4200 // JDK null-terminates the buffer even in len is zero
4201 if (buf != NULL) {
4202 buf[0] = 0;
4203 }
4204 }
4205 }
4206 JNI_END
4207
4208
4209 JNI_ENTRY(void*, jni_GetPrimitiveArrayCritical(JNIEnv *env, jarray array, jboolean *isCopy))
4210 JNIWrapper("GetPrimitiveArrayCritical");
4211 #ifndef USDT2
4212 DTRACE_PROBE3(hotspot_jni, GetPrimitiveArrayCritical__entry, env, array, isCopy);
4213 #else /* USDT2 */
4214 HOTSPOT_JNI_GETPRIMITIVEARRAYCRITICAL_ENTRY(
4215 env, array, (uintptr_t *) isCopy);
4216 #endif /* USDT2 */
4217 GC_locker::lock_critical(thread);
4218 if (isCopy != NULL) {
4219 *isCopy = JNI_FALSE;
4220 }
4221 oop a = JNIHandles::resolve_non_null(array);
4222 assert(a->is_array(), "just checking");
4223 BasicType type;
4224 if (a->is_objArray()) {
4225 type = T_OBJECT;
4226 } else {
4227 type = TypeArrayKlass::cast(a->klass())->element_type();
4228 }
4229 void* ret = arrayOop(a)->base(type);
4230 #ifndef USDT2
4231 DTRACE_PROBE1(hotspot_jni, GetPrimitiveArrayCritical__return, ret);
4232 #else /* USDT2 */
4233 HOTSPOT_JNI_GETPRIMITIVEARRAYCRITICAL_RETURN(
4234 ret);
4235 #endif /* USDT2 */
4236 return ret;
4237 JNI_END
4238
4239
4240 JNI_ENTRY(void, jni_ReleasePrimitiveArrayCritical(JNIEnv *env, jarray array, void *carray, jint mode))
4241 JNIWrapper("ReleasePrimitiveArrayCritical");
4242 #ifndef USDT2
4243 DTRACE_PROBE4(hotspot_jni, ReleasePrimitiveArrayCritical__entry, env, array, carray, mode);
4244 #else /* USDT2 */
4245 HOTSPOT_JNI_RELEASEPRIMITIVEARRAYCRITICAL_ENTRY(
4246 env, array, carray, mode);
4247 #endif /* USDT2 */
4248 // The array, carray and mode arguments are ignored
4249 GC_locker::unlock_critical(thread);
4250 #ifndef USDT2
4251 DTRACE_PROBE(hotspot_jni, ReleasePrimitiveArrayCritical__return);
4252 #else /* USDT2 */
4253 HOTSPOT_JNI_RELEASEPRIMITIVEARRAYCRITICAL_RETURN(
4254 );
4255 #endif /* USDT2 */
4256 JNI_END
4257
4258
4259 JNI_ENTRY(const jchar*, jni_GetStringCritical(JNIEnv *env, jstring string, jboolean *isCopy))
4260 JNIWrapper("GetStringCritical");
4261 #ifndef USDT2
4262 DTRACE_PROBE3(hotspot_jni, GetStringCritical__entry, env, string, isCopy);
4263 #else /* USDT2 */
4264 HOTSPOT_JNI_GETSTRINGCRITICAL_ENTRY(
4265 env, string, (uintptr_t *) isCopy);
4266 #endif /* USDT2 */
4267 GC_locker::lock_critical(thread);
4268 if (isCopy != NULL) {
4269 *isCopy = JNI_FALSE;
4270 }
4271 oop s = JNIHandles::resolve_non_null(string);
4272 int s_len = java_lang_String::length(s);
4273 typeArrayOop s_value = java_lang_String::value(s);
4274 int s_offset = java_lang_String::offset(s);
4275 const jchar* ret;
4276 if (s_len > 0) {
4277 ret = s_value->char_at_addr(s_offset);
4278 } else {
4279 ret = (jchar*) s_value->base(T_CHAR);
4280 }
4281 #ifndef USDT2
4282 DTRACE_PROBE1(hotspot_jni, GetStringCritical__return, ret);
4283 #else /* USDT2 */
4284 HOTSPOT_JNI_GETSTRINGCRITICAL_RETURN(
4285 (uint16_t *) ret);
4286 #endif /* USDT2 */
4287 return ret;
4288 JNI_END
4289
4290
4291 JNI_ENTRY(void, jni_ReleaseStringCritical(JNIEnv *env, jstring str, const jchar *chars))
4292 JNIWrapper("ReleaseStringCritical");
4293 #ifndef USDT2
4294 DTRACE_PROBE3(hotspot_jni, ReleaseStringCritical__entry, env, str, chars);
4295 #else /* USDT2 */
4296 HOTSPOT_JNI_RELEASESTRINGCRITICAL_ENTRY(
4297 env, str, (uint16_t *) chars);
4298 #endif /* USDT2 */
4299 // The str and chars arguments are ignored
4300 GC_locker::unlock_critical(thread);
4301 #ifndef USDT2
4302 DTRACE_PROBE(hotspot_jni, ReleaseStringCritical__return);
4303 #else /* USDT2 */
4304 HOTSPOT_JNI_RELEASESTRINGCRITICAL_RETURN(
4305 );
4306 #endif /* USDT2 */
4307 JNI_END
4308
4309
4310 JNI_ENTRY(jweak, jni_NewWeakGlobalRef(JNIEnv *env, jobject ref))
4311 JNIWrapper("jni_NewWeakGlobalRef");
4312 #ifndef USDT2
4313 DTRACE_PROBE2(hotspot_jni, NewWeakGlobalRef__entry, env, ref);
4314 #else /* USDT2 */
4315 HOTSPOT_JNI_NEWWEAKGLOBALREF_ENTRY(
4316 env, ref);
4317 #endif /* USDT2 */
4318 Handle ref_handle(thread, JNIHandles::resolve(ref));
4319 jweak ret = JNIHandles::make_weak_global(ref_handle);
4320 #ifndef USDT2
4321 DTRACE_PROBE1(hotspot_jni, NewWeakGlobalRef__return, ret);
4322 #else /* USDT2 */
4323 HOTSPOT_JNI_NEWWEAKGLOBALREF_RETURN(
4324 ret);
4325 #endif /* USDT2 */
4326 return ret;
4327 JNI_END
4328
4329 // Must be JNI_ENTRY (with HandleMark)
4330 JNI_ENTRY(void, jni_DeleteWeakGlobalRef(JNIEnv *env, jweak ref))
4331 JNIWrapper("jni_DeleteWeakGlobalRef");
4332 #ifndef USDT2
4333 DTRACE_PROBE2(hotspot_jni, DeleteWeakGlobalRef__entry, env, ref);
4334 #else /* USDT2 */
4335 HOTSPOT_JNI_DELETEWEAKGLOBALREF_ENTRY(
4336 env, ref);
4337 #endif /* USDT2 */
4338 JNIHandles::destroy_weak_global(ref);
4339 #ifndef USDT2
4340 DTRACE_PROBE(hotspot_jni, DeleteWeakGlobalRef__return);
4341 #else /* USDT2 */
4342 HOTSPOT_JNI_DELETEWEAKGLOBALREF_RETURN(
4343 );
4344 #endif /* USDT2 */
4345 JNI_END
4346
4347
4348 JNI_QUICK_ENTRY(jboolean, jni_ExceptionCheck(JNIEnv *env))
4349 JNIWrapper("jni_ExceptionCheck");
4350 #ifndef USDT2
4351 DTRACE_PROBE1(hotspot_jni, ExceptionCheck__entry, env);
4352 #else /* USDT2 */
4353 HOTSPOT_JNI_EXCEPTIONCHECK_ENTRY(
4354 env);
4355 #endif /* USDT2 */
4356 jni_check_async_exceptions(thread);
4357 jboolean ret = (thread->has_pending_exception()) ? JNI_TRUE : JNI_FALSE;
4358 #ifndef USDT2
4359 DTRACE_PROBE1(hotspot_jni, ExceptionCheck__return, ret);
4360 #else /* USDT2 */
4361 HOTSPOT_JNI_EXCEPTIONCHECK_RETURN(
4362 ret);
4363 #endif /* USDT2 */
4364 return ret;
4365 JNI_END
4366
4367
4368 // Initialization state for three routines below relating to
4369 // java.nio.DirectBuffers
4370 static jint directBufferSupportInitializeStarted = 0;
4371 static volatile jint directBufferSupportInitializeEnded = 0;
4372 static volatile jint directBufferSupportInitializeFailed = 0;
4373 static jclass bufferClass = NULL;
4374 static jclass directBufferClass = NULL;
4375 static jclass directByteBufferClass = NULL;
4376 static jmethodID directByteBufferConstructor = NULL;
4377 static jfieldID directBufferAddressField = NULL;
4378 static jfieldID bufferCapacityField = NULL;
4379
4380 static jclass lookupOne(JNIEnv* env, const char* name, TRAPS) {
4381 Handle loader; // null (bootstrap) loader
4382 Handle protection_domain; // null protection domain
4383
4384 TempNewSymbol sym = SymbolTable::new_symbol(name, CHECK_NULL);
4385 jclass result = find_class_from_class_loader(env, sym, true, loader, protection_domain, true, CHECK_NULL);
4386
4387 if (TraceClassResolution && result != NULL) {
4388 trace_class_resolution(java_lang_Class::as_Klass(JNIHandles::resolve_non_null(result)));
4389 }
4390 return result;
4391 }
4392
4393 // These lookups are done with the NULL (bootstrap) ClassLoader to
4394 // circumvent any security checks that would be done by jni_FindClass.
4395 JNI_ENTRY(bool, lookupDirectBufferClasses(JNIEnv* env))
4396 {
4397 if ((bufferClass = lookupOne(env, "java/nio/Buffer", thread)) == NULL) { return false; }
4398 if ((directBufferClass = lookupOne(env, "sun/nio/ch/DirectBuffer", thread)) == NULL) { return false; }
4399 if ((directByteBufferClass = lookupOne(env, "java/nio/DirectByteBuffer", thread)) == NULL) { return false; }
4400 return true;
4401 }
4402 JNI_END
4403
4404
4405 static bool initializeDirectBufferSupport(JNIEnv* env, JavaThread* thread) {
4406 if (directBufferSupportInitializeFailed) {
4407 return false;
4408 }
4409
4410 if (Atomic::cmpxchg(1, &directBufferSupportInitializeStarted, 0) == 0) {
4411 if (!lookupDirectBufferClasses(env)) {
4412 directBufferSupportInitializeFailed = 1;
4413 return false;
4414 }
4415
4416 // Make global references for these
4417 bufferClass = (jclass) env->NewGlobalRef(bufferClass);
4418 directBufferClass = (jclass) env->NewGlobalRef(directBufferClass);
4419 directByteBufferClass = (jclass) env->NewGlobalRef(directByteBufferClass);
4420
4421 // Get needed field and method IDs
4422 directByteBufferConstructor = env->GetMethodID(directByteBufferClass, "<init>", "(JI)V");
4423 directBufferAddressField = env->GetFieldID(bufferClass, "address", "J");
4424 bufferCapacityField = env->GetFieldID(bufferClass, "capacity", "I");
4425
4426 if ((directByteBufferConstructor == NULL) ||
4427 (directBufferAddressField == NULL) ||
4428 (bufferCapacityField == NULL)) {
4429 directBufferSupportInitializeFailed = 1;
4430 return false;
4431 }
4432
4433 directBufferSupportInitializeEnded = 1;
4434 } else {
4435 while (!directBufferSupportInitializeEnded && !directBufferSupportInitializeFailed) {
4436 // Set state as yield_all can call os:sleep. On Solaris, yield_all calls
4437 // os::sleep which requires the VM state transition. On other platforms, it
4438 // is not necessary. The following call to change the VM state is purposely
4439 // put inside the loop to avoid potential deadlock when multiple threads
4440 // try to call this method. See 6791815 for more details.
4441 ThreadInVMfromNative tivn(thread);
4442 os::yield_all();
4443 }
4444 }
4445
4446 return !directBufferSupportInitializeFailed;
4447 }
4448
4449 extern "C" jobject JNICALL jni_NewDirectByteBuffer(JNIEnv *env, void* address, jlong capacity)
4450 {
4451 // thread_from_jni_environment() will block if VM is gone.
4452 JavaThread* thread = JavaThread::thread_from_jni_environment(env);
4453
4454 JNIWrapper("jni_NewDirectByteBuffer");
4455 #ifndef USDT2
4456 DTRACE_PROBE3(hotspot_jni, NewDirectByteBuffer__entry, env, address, capacity);
4457 #else /* USDT2 */
4458 HOTSPOT_JNI_NEWDIRECTBYTEBUFFER_ENTRY(
4459 env, address, capacity);
4460 #endif /* USDT2 */
4461
4462 if (!directBufferSupportInitializeEnded) {
4463 if (!initializeDirectBufferSupport(env, thread)) {
4464 #ifndef USDT2
4465 DTRACE_PROBE1(hotspot_jni, NewDirectByteBuffer__return, NULL);
4466 #else /* USDT2 */
4467 HOTSPOT_JNI_NEWDIRECTBYTEBUFFER_RETURN(
4468 NULL);
4469 #endif /* USDT2 */
4470 return NULL;
4471 }
4472 }
4473
4474 // Being paranoid about accidental sign extension on address
4475 jlong addr = (jlong) ((uintptr_t) address);
4476 // NOTE that package-private DirectByteBuffer constructor currently
4477 // takes int capacity
4478 jint cap = (jint) capacity;
4479 jobject ret = env->NewObject(directByteBufferClass, directByteBufferConstructor, addr, cap);
4480 #ifndef USDT2
4481 DTRACE_PROBE1(hotspot_jni, NewDirectByteBuffer__return, ret);
4482 #else /* USDT2 */
4483 HOTSPOT_JNI_NEWDIRECTBYTEBUFFER_RETURN(
4484 ret);
4485 #endif /* USDT2 */
4486 return ret;
4487 }
4488
4489 #ifndef USDT2
4490 DT_RETURN_MARK_DECL(GetDirectBufferAddress, void*);
4491 #else /* USDT2 */
4492 DT_RETURN_MARK_DECL(GetDirectBufferAddress, void*
4493 , HOTSPOT_JNI_GETDIRECTBUFFERADDRESS_RETURN((void*) _ret_ref));
4494 #endif /* USDT2 */
4495
4496 extern "C" void* JNICALL jni_GetDirectBufferAddress(JNIEnv *env, jobject buf)
4497 {
4498 // thread_from_jni_environment() will block if VM is gone.
4499 JavaThread* thread = JavaThread::thread_from_jni_environment(env);
4500
4501 JNIWrapper("jni_GetDirectBufferAddress");
4502 #ifndef USDT2
4503 DTRACE_PROBE2(hotspot_jni, GetDirectBufferAddress__entry, env, buf);
4504 #else /* USDT2 */
4505 HOTSPOT_JNI_GETDIRECTBUFFERADDRESS_ENTRY(
4506 env, buf);
4507 #endif /* USDT2 */
4508 void* ret = NULL;
4509 DT_RETURN_MARK(GetDirectBufferAddress, void*, (const void*&)ret);
4510
4511 if (!directBufferSupportInitializeEnded) {
4512 if (!initializeDirectBufferSupport(env, thread)) {
4513 return 0;
4514 }
4515 }
4516
4517 if ((buf != NULL) && (!env->IsInstanceOf(buf, directBufferClass))) {
4518 return 0;
4519 }
4520
4521 ret = (void*)(intptr_t)env->GetLongField(buf, directBufferAddressField);
4522 return ret;
4523 }
4524
4525 #ifndef USDT2
4526 DT_RETURN_MARK_DECL(GetDirectBufferCapacity, jlong);
4527 #else /* USDT2 */
4528 DT_RETURN_MARK_DECL(GetDirectBufferCapacity, jlong
4529 , HOTSPOT_JNI_GETDIRECTBUFFERCAPACITY_RETURN(_ret_ref));
4530 #endif /* USDT2 */
4531
4532 extern "C" jlong JNICALL jni_GetDirectBufferCapacity(JNIEnv *env, jobject buf)
4533 {
4534 // thread_from_jni_environment() will block if VM is gone.
4535 JavaThread* thread = JavaThread::thread_from_jni_environment(env);
4536
4537 JNIWrapper("jni_GetDirectBufferCapacity");
4538 #ifndef USDT2
4539 DTRACE_PROBE2(hotspot_jni, GetDirectBufferCapacity__entry, env, buf);
4540 #else /* USDT2 */
4541 HOTSPOT_JNI_GETDIRECTBUFFERCAPACITY_ENTRY(
4542 env, buf);
4543 #endif /* USDT2 */
4544 jlong ret = -1;
4545 DT_RETURN_MARK(GetDirectBufferCapacity, jlong, (const jlong&)ret);
4546
4547 if (!directBufferSupportInitializeEnded) {
4548 if (!initializeDirectBufferSupport(env, thread)) {
4549 ret = 0;
4550 return ret;
4551 }
4552 }
4553
4554 if (buf == NULL) {
4555 return -1;
4556 }
4557
4558 if (!env->IsInstanceOf(buf, directBufferClass)) {
4559 return -1;
4560 }
4561
4562 // NOTE that capacity is currently an int in the implementation
4563 ret = env->GetIntField(buf, bufferCapacityField);
4564 return ret;
4565 }
4566
4567
4568 JNI_LEAF(jint, jni_GetVersion(JNIEnv *env))
4569 JNIWrapper("GetVersion");
4570 #ifndef USDT2
4571 DTRACE_PROBE1(hotspot_jni, GetVersion__entry, env);
4572 #else /* USDT2 */
4573 HOTSPOT_JNI_GETVERSION_ENTRY(
4574 env);
4575 #endif /* USDT2 */
4576 #ifndef USDT2
4577 DTRACE_PROBE1(hotspot_jni, GetVersion__return, CurrentVersion);
4578 #else /* USDT2 */
4579 HOTSPOT_JNI_GETVERSION_RETURN(
4580 CurrentVersion);
4581 #endif /* USDT2 */
4582 return CurrentVersion;
4583 JNI_END
4584
4585 extern struct JavaVM_ main_vm;
4586
4587 JNI_LEAF(jint, jni_GetJavaVM(JNIEnv *env, JavaVM **vm))
4588 JNIWrapper("jni_GetJavaVM");
4589 #ifndef USDT2
4590 DTRACE_PROBE2(hotspot_jni, GetJavaVM__entry, env, vm);
4591 #else /* USDT2 */
4592 HOTSPOT_JNI_GETJAVAVM_ENTRY(
4593 env, (void **) vm);
4594 #endif /* USDT2 */
4595 *vm = (JavaVM *)(&main_vm);
4596 #ifndef USDT2
4597 DTRACE_PROBE1(hotspot_jni, GetJavaVM__return, JNI_OK);
4598 #else /* USDT2 */
4599 HOTSPOT_JNI_GETJAVAVM_RETURN(
4600 JNI_OK);
4601 #endif /* USDT2 */
4602 return JNI_OK;
4603 JNI_END
4604
4605 // Structure containing all jni functions
4606 struct JNINativeInterface_ jni_NativeInterface = {
4607 NULL,
4608 NULL,
4609 NULL,
4610
4611 NULL,
4612
4613 jni_GetVersion,
4614
4615 jni_DefineClass,
4616 jni_FindClass,
4617
4618 jni_FromReflectedMethod,
4619 jni_FromReflectedField,
4620
4621 jni_ToReflectedMethod,
4622
4623 jni_GetSuperclass,
4624 jni_IsAssignableFrom,
4625
4626 jni_ToReflectedField,
4627
4628 jni_Throw,
4629 jni_ThrowNew,
4630 jni_ExceptionOccurred,
4631 jni_ExceptionDescribe,
4632 jni_ExceptionClear,
4633 jni_FatalError,
4634
4635 jni_PushLocalFrame,
4636 jni_PopLocalFrame,
4637
4638 jni_NewGlobalRef,
4639 jni_DeleteGlobalRef,
4640 jni_DeleteLocalRef,
4641 jni_IsSameObject,
4642
4643 jni_NewLocalRef,
4644 jni_EnsureLocalCapacity,
4645
4646 jni_AllocObject,
4647 jni_NewObject,
4648 jni_NewObjectV,
4649 jni_NewObjectA,
4650
4651 jni_GetObjectClass,
4652 jni_IsInstanceOf,
4653
4654 jni_GetMethodID,
4655
4656 jni_CallObjectMethod,
4657 jni_CallObjectMethodV,
4658 jni_CallObjectMethodA,
4659 jni_CallBooleanMethod,
4660 jni_CallBooleanMethodV,
4661 jni_CallBooleanMethodA,
4662 jni_CallByteMethod,
4663 jni_CallByteMethodV,
4664 jni_CallByteMethodA,
4665 jni_CallCharMethod,
4666 jni_CallCharMethodV,
4667 jni_CallCharMethodA,
4668 jni_CallShortMethod,
4669 jni_CallShortMethodV,
4670 jni_CallShortMethodA,
4671 jni_CallIntMethod,
4672 jni_CallIntMethodV,
4673 jni_CallIntMethodA,
4674 jni_CallLongMethod,
4675 jni_CallLongMethodV,
4676 jni_CallLongMethodA,
4677 jni_CallFloatMethod,
4678 jni_CallFloatMethodV,
4679 jni_CallFloatMethodA,
4680 jni_CallDoubleMethod,
4681 jni_CallDoubleMethodV,
4682 jni_CallDoubleMethodA,
4683 jni_CallVoidMethod,
4684 jni_CallVoidMethodV,
4685 jni_CallVoidMethodA,
4686
4687 jni_CallNonvirtualObjectMethod,
4688 jni_CallNonvirtualObjectMethodV,
4689 jni_CallNonvirtualObjectMethodA,
4690 jni_CallNonvirtualBooleanMethod,
4691 jni_CallNonvirtualBooleanMethodV,
4692 jni_CallNonvirtualBooleanMethodA,
4693 jni_CallNonvirtualByteMethod,
4694 jni_CallNonvirtualByteMethodV,
4695 jni_CallNonvirtualByteMethodA,
4696 jni_CallNonvirtualCharMethod,
4697 jni_CallNonvirtualCharMethodV,
4698 jni_CallNonvirtualCharMethodA,
4699 jni_CallNonvirtualShortMethod,
4700 jni_CallNonvirtualShortMethodV,
4701 jni_CallNonvirtualShortMethodA,
4702 jni_CallNonvirtualIntMethod,
4703 jni_CallNonvirtualIntMethodV,
4704 jni_CallNonvirtualIntMethodA,
4705 jni_CallNonvirtualLongMethod,
4706 jni_CallNonvirtualLongMethodV,
4707 jni_CallNonvirtualLongMethodA,
4708 jni_CallNonvirtualFloatMethod,
4709 jni_CallNonvirtualFloatMethodV,
4710 jni_CallNonvirtualFloatMethodA,
4711 jni_CallNonvirtualDoubleMethod,
4712 jni_CallNonvirtualDoubleMethodV,
4713 jni_CallNonvirtualDoubleMethodA,
4714 jni_CallNonvirtualVoidMethod,
4715 jni_CallNonvirtualVoidMethodV,
4716 jni_CallNonvirtualVoidMethodA,
4717
4718 jni_GetFieldID,
4719
4720 jni_GetObjectField,
4721 jni_GetBooleanField,
4722 jni_GetByteField,
4723 jni_GetCharField,
4724 jni_GetShortField,
4725 jni_GetIntField,
4726 jni_GetLongField,
4727 jni_GetFloatField,
4728 jni_GetDoubleField,
4729
4730 jni_SetObjectField,
4731 jni_SetBooleanField,
4732 jni_SetByteField,
4733 jni_SetCharField,
4734 jni_SetShortField,
4735 jni_SetIntField,
4736 jni_SetLongField,
4737 jni_SetFloatField,
4738 jni_SetDoubleField,
4739
4740 jni_GetStaticMethodID,
4741
4742 jni_CallStaticObjectMethod,
4743 jni_CallStaticObjectMethodV,
4744 jni_CallStaticObjectMethodA,
4745 jni_CallStaticBooleanMethod,
4746 jni_CallStaticBooleanMethodV,
4747 jni_CallStaticBooleanMethodA,
4748 jni_CallStaticByteMethod,
4749 jni_CallStaticByteMethodV,
4750 jni_CallStaticByteMethodA,
4751 jni_CallStaticCharMethod,
4752 jni_CallStaticCharMethodV,
4753 jni_CallStaticCharMethodA,
4754 jni_CallStaticShortMethod,
4755 jni_CallStaticShortMethodV,
4756 jni_CallStaticShortMethodA,
4757 jni_CallStaticIntMethod,
4758 jni_CallStaticIntMethodV,
4759 jni_CallStaticIntMethodA,
4760 jni_CallStaticLongMethod,
4761 jni_CallStaticLongMethodV,
4762 jni_CallStaticLongMethodA,
4763 jni_CallStaticFloatMethod,
4764 jni_CallStaticFloatMethodV,
4765 jni_CallStaticFloatMethodA,
4766 jni_CallStaticDoubleMethod,
4767 jni_CallStaticDoubleMethodV,
4768 jni_CallStaticDoubleMethodA,
4769 jni_CallStaticVoidMethod,
4770 jni_CallStaticVoidMethodV,
4771 jni_CallStaticVoidMethodA,
4772
4773 jni_GetStaticFieldID,
4774
4775 jni_GetStaticObjectField,
4776 jni_GetStaticBooleanField,
4777 jni_GetStaticByteField,
4778 jni_GetStaticCharField,
4779 jni_GetStaticShortField,
4780 jni_GetStaticIntField,
4781 jni_GetStaticLongField,
4782 jni_GetStaticFloatField,
4783 jni_GetStaticDoubleField,
4784
4785 jni_SetStaticObjectField,
4786 jni_SetStaticBooleanField,
4787 jni_SetStaticByteField,
4788 jni_SetStaticCharField,
4789 jni_SetStaticShortField,
4790 jni_SetStaticIntField,
4791 jni_SetStaticLongField,
4792 jni_SetStaticFloatField,
4793 jni_SetStaticDoubleField,
4794
4795 jni_NewString,
4796 jni_GetStringLength,
4797 jni_GetStringChars,
4798 jni_ReleaseStringChars,
4799
4800 jni_NewStringUTF,
4801 jni_GetStringUTFLength,
4802 jni_GetStringUTFChars,
4803 jni_ReleaseStringUTFChars,
4804
4805 jni_GetArrayLength,
4806
4807 jni_NewObjectArray,
4808 jni_GetObjectArrayElement,
4809 jni_SetObjectArrayElement,
4810
4811 jni_NewBooleanArray,
4812 jni_NewByteArray,
4813 jni_NewCharArray,
4814 jni_NewShortArray,
4815 jni_NewIntArray,
4816 jni_NewLongArray,
4817 jni_NewFloatArray,
4818 jni_NewDoubleArray,
4819
4820 jni_GetBooleanArrayElements,
4821 jni_GetByteArrayElements,
4822 jni_GetCharArrayElements,
4823 jni_GetShortArrayElements,
4824 jni_GetIntArrayElements,
4825 jni_GetLongArrayElements,
4826 jni_GetFloatArrayElements,
4827 jni_GetDoubleArrayElements,
4828
4829 jni_ReleaseBooleanArrayElements,
4830 jni_ReleaseByteArrayElements,
4831 jni_ReleaseCharArrayElements,
4832 jni_ReleaseShortArrayElements,
4833 jni_ReleaseIntArrayElements,
4834 jni_ReleaseLongArrayElements,
4835 jni_ReleaseFloatArrayElements,
4836 jni_ReleaseDoubleArrayElements,
4837
4838 jni_GetBooleanArrayRegion,
4839 jni_GetByteArrayRegion,
4840 jni_GetCharArrayRegion,
4841 jni_GetShortArrayRegion,
4842 jni_GetIntArrayRegion,
4843 jni_GetLongArrayRegion,
4844 jni_GetFloatArrayRegion,
4845 jni_GetDoubleArrayRegion,
4846
4847 jni_SetBooleanArrayRegion,
4848 jni_SetByteArrayRegion,
4849 jni_SetCharArrayRegion,
4850 jni_SetShortArrayRegion,
4851 jni_SetIntArrayRegion,
4852 jni_SetLongArrayRegion,
4853 jni_SetFloatArrayRegion,
4854 jni_SetDoubleArrayRegion,
4855
4856 jni_RegisterNatives,
4857 jni_UnregisterNatives,
4858
4859 jni_MonitorEnter,
4860 jni_MonitorExit,
4861
4862 jni_GetJavaVM,
4863
4864 jni_GetStringRegion,
4865 jni_GetStringUTFRegion,
4866
4867 jni_GetPrimitiveArrayCritical,
4868 jni_ReleasePrimitiveArrayCritical,
4869
4870 jni_GetStringCritical,
4871 jni_ReleaseStringCritical,
4872
4873 jni_NewWeakGlobalRef,
4874 jni_DeleteWeakGlobalRef,
4875
4876 jni_ExceptionCheck,
4877
4878 jni_NewDirectByteBuffer,
4879 jni_GetDirectBufferAddress,
4880 jni_GetDirectBufferCapacity,
4881
4882 // New 1_6 features
4883
4884 jni_GetObjectRefType
4885 };
4886
4887
4888 // For jvmti use to modify jni function table.
4889 // Java threads in native contiues to run until it is transitioned
4890 // to VM at safepoint. Before the transition or before it is blocked
4891 // for safepoint it may access jni function table. VM could crash if
4892 // any java thread access the jni function table in the middle of memcpy.
4893 // To avoid this each function pointers are copied automically.
4894 void copy_jni_function_table(const struct JNINativeInterface_ *new_jni_NativeInterface) {
4895 assert(SafepointSynchronize::is_at_safepoint(), "must be at safepoint");
4896 intptr_t *a = (intptr_t *) jni_functions();
4897 intptr_t *b = (intptr_t *) new_jni_NativeInterface;
4898 for (uint i=0; i < sizeof(struct JNINativeInterface_)/sizeof(void *); i++) {
4899 Atomic::store_ptr(*b++, a++);
4900 }
4901 }
4902
4903 void quicken_jni_functions() {
4904 // Replace Get<Primitive>Field with fast versions
4905 if (UseFastJNIAccessors && !JvmtiExport::can_post_field_access()
4906 && !VerifyJNIFields && !TraceJNICalls && !CountJNICalls && !CheckJNICalls
4907 #if defined(_WINDOWS) && defined(IA32) && defined(COMPILER2)
4908 // windows x86 currently needs SEH wrapper and the gain of the fast
4909 // versions currently isn't certain for server vm on uniprocessor.
4910 && os::is_MP()
4911 #endif
4912 ) {
4913 address func;
4914 func = JNI_FastGetField::generate_fast_get_boolean_field();
4915 if (func != (address)-1) {
4916 jni_NativeInterface.GetBooleanField = (GetBooleanField_t)func;
4917 }
4918 func = JNI_FastGetField::generate_fast_get_byte_field();
4919 if (func != (address)-1) {
4920 jni_NativeInterface.GetByteField = (GetByteField_t)func;
4921 }
4922 func = JNI_FastGetField::generate_fast_get_char_field();
4923 if (func != (address)-1) {
4924 jni_NativeInterface.GetCharField = (GetCharField_t)func;
4925 }
4926 func = JNI_FastGetField::generate_fast_get_short_field();
4927 if (func != (address)-1) {
4928 jni_NativeInterface.GetShortField = (GetShortField_t)func;
4929 }
4930 func = JNI_FastGetField::generate_fast_get_int_field();
4931 if (func != (address)-1) {
4932 jni_NativeInterface.GetIntField = (GetIntField_t)func;
4933 }
4934 func = JNI_FastGetField::generate_fast_get_long_field();
4935 if (func != (address)-1) {
4936 jni_NativeInterface.GetLongField = (GetLongField_t)func;
4937 }
4938 func = JNI_FastGetField::generate_fast_get_float_field();
4939 if (func != (address)-1) {
4940 jni_NativeInterface.GetFloatField = (GetFloatField_t)func;
4941 }
4942 func = JNI_FastGetField::generate_fast_get_double_field();
4943 if (func != (address)-1) {
4944 jni_NativeInterface.GetDoubleField = (GetDoubleField_t)func;
4945 }
4946 }
4947 }
4948
4949 // Returns the function structure
4950 struct JNINativeInterface_* jni_functions() {
4951 #if INCLUDE_JNI_CHECK
4952 if (CheckJNICalls) return jni_functions_check();
4953 #endif // INCLUDE_JNI_CHECK
4954 return &jni_NativeInterface;
4955 }
4956
4957 // Returns the function structure
4958 struct JNINativeInterface_* jni_functions_nocheck() {
4959 return &jni_NativeInterface;
4960 }
4961
4962
4963 // Invocation API
4964
4965
4966 // Forward declaration
4967 extern const struct JNIInvokeInterface_ jni_InvokeInterface;
4968
4969 // Global invocation API vars
4970 volatile jint vm_created = 0;
4971 // Indicate whether it is safe to recreate VM
4972 volatile jint safe_to_recreate_vm = 1;
4973 struct JavaVM_ main_vm = {&jni_InvokeInterface};
4974
4975
4976 #define JAVASTACKSIZE (400 * 1024) /* Default size of a thread java stack */
4977 enum { VERIFY_NONE, VERIFY_REMOTE, VERIFY_ALL };
4978
4979 #ifndef USDT2
4980 HS_DTRACE_PROBE_DECL1(hotspot_jni, GetDefaultJavaVMInitArgs__entry, void*);
4981 DT_RETURN_MARK_DECL(GetDefaultJavaVMInitArgs, jint);
4982 #else /* USDT2 */
4983 DT_RETURN_MARK_DECL(GetDefaultJavaVMInitArgs, jint
4984 , HOTSPOT_JNI_GETDEFAULTJAVAVMINITARGS_RETURN(_ret_ref));
4985 #endif /* USDT2 */
4986
4987 _JNI_IMPORT_OR_EXPORT_ jint JNICALL JNI_GetDefaultJavaVMInitArgs(void *args_) {
4988 #ifndef USDT2
4989 HS_DTRACE_PROBE1(hotspot_jni, GetDefaultJavaVMInitArgs__entry, args_);
4990 #else /* USDT2 */
4991 HOTSPOT_JNI_GETDEFAULTJAVAVMINITARGS_ENTRY(
4992 args_);
4993 #endif /* USDT2 */
4994 JDK1_1InitArgs *args = (JDK1_1InitArgs *)args_;
4995 jint ret = JNI_ERR;
4996 DT_RETURN_MARK(GetDefaultJavaVMInitArgs, jint, (const jint&)ret);
4997
4998 if (Threads::is_supported_jni_version(args->version)) {
4999 ret = JNI_OK;
5000 }
5001 // 1.1 style no longer supported in hotspot.
5002 // According the JNI spec, we should update args->version on return.
5003 // We also use the structure to communicate with launcher about default
5004 // stack size.
5005 if (args->version == JNI_VERSION_1_1) {
5006 args->version = JNI_VERSION_1_2;
5007 // javaStackSize is int in arguments structure
5008 assert(jlong(ThreadStackSize) * K < INT_MAX, "integer overflow");
5009 args->javaStackSize = (jint)(ThreadStackSize * K);
5010 }
5011 return ret;
5012 }
5013
5014 #ifndef PRODUCT
5015
5016 #include "gc_implementation/shared/gcTimer.hpp"
5017 #include "gc_interface/collectedHeap.hpp"
5018 #if INCLUDE_ALL_GCS
5019 #include "gc_implementation/g1/heapRegionRemSet.hpp"
5020 #endif
5021 #include "utilities/quickSort.hpp"
5022 #if INCLUDE_VM_STRUCTS
5023 #include "runtime/vmStructs.hpp"
5024 #endif
5025
5026 #define run_unit_test(unit_test_function_call) \
5027 tty->print_cr("Running test: " #unit_test_function_call); \
5028 unit_test_function_call
5029
5030 void execute_internal_vm_tests() {
5031 if (ExecuteInternalVMTests) {
5032 tty->print_cr("Running internal VM tests");
5033 run_unit_test(GlobalDefinitions::test_globals());
5034 run_unit_test(GCTimerAllTest::all());
5035 run_unit_test(arrayOopDesc::test_max_array_length());
5036 run_unit_test(CollectedHeap::test_is_in());
5037 run_unit_test(QuickSort::test_quick_sort());
5038 run_unit_test(AltHashing::test_alt_hash());
5039 #if INCLUDE_VM_STRUCTS
5040 run_unit_test(VMStructs::test());
5041 #endif
5042 #if INCLUDE_ALL_GCS
5043 run_unit_test(HeapRegionRemSet::test_prt());
5044 #endif
5045 tty->print_cr("All internal VM tests passed");
5046 }
5047 }
5048
5049 #undef run_unit_test
5050
5051 #endif
5052
5053 #ifndef USDT2
5054 HS_DTRACE_PROBE_DECL3(hotspot_jni, CreateJavaVM__entry, vm, penv, args);
5055 DT_RETURN_MARK_DECL(CreateJavaVM, jint);
5056 #else /* USDT2 */
5057 DT_RETURN_MARK_DECL(CreateJavaVM, jint
5058 , HOTSPOT_JNI_CREATEJAVAVM_RETURN(_ret_ref));
5059 #endif /* USDT2 */
5060
5061 _JNI_IMPORT_OR_EXPORT_ jint JNICALL JNI_CreateJavaVM(JavaVM **vm, void **penv, void *args) {
5062 #ifndef USDT2
5063 HS_DTRACE_PROBE3(hotspot_jni, CreateJavaVM__entry, vm, penv, args);
5064 #else /* USDT2 */
5065 HOTSPOT_JNI_CREATEJAVAVM_ENTRY(
5066 (void **) vm, penv, args);
5067 #endif /* USDT2 */
5068
5069 jint result = JNI_ERR;
5070 DT_RETURN_MARK(CreateJavaVM, jint, (const jint&)result);
5071
5072 // We're about to use Atomic::xchg for synchronization. Some Zero
5073 // platforms use the GCC builtin __sync_lock_test_and_set for this,
5074 // but __sync_lock_test_and_set is not guaranteed to do what we want
5075 // on all architectures. So we check it works before relying on it.
5076 #if defined(ZERO) && defined(ASSERT)
5077 {
5078 jint a = 0xcafebabe;
5079 jint b = Atomic::xchg(0xdeadbeef, &a);
5080 void *c = &a;
5081 void *d = Atomic::xchg_ptr(&b, &c);
5082 assert(a == (jint) 0xdeadbeef && b == (jint) 0xcafebabe, "Atomic::xchg() works");
5083 assert(c == &b && d == &a, "Atomic::xchg_ptr() works");
5084 }
5085 #endif // ZERO && ASSERT
5086
5087 // At the moment it's only possible to have one Java VM,
5088 // since some of the runtime state is in global variables.
5089
5090 // We cannot use our mutex locks here, since they only work on
5091 // Threads. We do an atomic compare and exchange to ensure only
5092 // one thread can call this method at a time
5093
5094 // We use Atomic::xchg rather than Atomic::add/dec since on some platforms
5095 // the add/dec implementations are dependent on whether we are running
5096 // on a multiprocessor, and at this stage of initialization the os::is_MP
5097 // function used to determine this will always return false. Atomic::xchg
5098 // does not have this problem.
5099 if (Atomic::xchg(1, &vm_created) == 1) {
5100 return JNI_EEXIST; // already created, or create attempt in progress
5101 }
5102 if (Atomic::xchg(0, &safe_to_recreate_vm) == 0) {
5103 return JNI_ERR; // someone tried and failed and retry not allowed.
5104 }
5105
5106 assert(vm_created == 1, "vm_created is true during the creation");
5107
5108 /**
5109 * Certain errors during initialization are recoverable and do not
5110 * prevent this method from being called again at a later time
5111 * (perhaps with different arguments). However, at a certain
5112 * point during initialization if an error occurs we cannot allow
5113 * this function to be called again (or it will crash). In those
5114 * situations, the 'canTryAgain' flag is set to false, which atomically
5115 * sets safe_to_recreate_vm to 1, such that any new call to
5116 * JNI_CreateJavaVM will immediately fail using the above logic.
5117 */
5118 bool can_try_again = true;
5119
5120 result = Threads::create_vm((JavaVMInitArgs*) args, &can_try_again);
5121 if (result == JNI_OK) {
5122 JavaThread *thread = JavaThread::current();
5123 /* thread is thread_in_vm here */
5124 *vm = (JavaVM *)(&main_vm);
5125 *(JNIEnv**)penv = thread->jni_environment();
5126
5127 // Tracks the time application was running before GC
5128 RuntimeService::record_application_start();
5129
5130 // Notify JVMTI
5131 if (JvmtiExport::should_post_thread_life()) {
5132 JvmtiExport::post_thread_start(thread);
5133 }
5134
5135 EventThreadStart event;
5136 if (event.should_commit()) {
5137 event.set_javalangthread(java_lang_Thread::thread_id(thread->threadObj()));
5138 event.commit();
5139 }
5140
5141 #ifndef PRODUCT
5142 #ifndef TARGET_OS_FAMILY_windows
5143 #define CALL_TEST_FUNC_WITH_WRAPPER_IF_NEEDED(f) f()
5144 #endif
5145
5146 // Check if we should compile all classes on bootclasspath
5147 if (CompileTheWorld) ClassLoader::compile_the_world();
5148 if (ReplayCompiles) ciReplay::replay(thread);
5149
5150 // Some platforms (like Win*) need a wrapper around these test
5151 // functions in order to properly handle error conditions.
5152 CALL_TEST_FUNC_WITH_WRAPPER_IF_NEEDED(test_error_handler);
5153 CALL_TEST_FUNC_WITH_WRAPPER_IF_NEEDED(execute_internal_vm_tests);
5154 #endif
5155
5156 // Since this is not a JVM_ENTRY we have to set the thread state manually before leaving.
5157 ThreadStateTransition::transition_and_fence(thread, _thread_in_vm, _thread_in_native);
5158 } else {
5159 if (can_try_again) {
5160 // reset safe_to_recreate_vm to 1 so that retrial would be possible
5161 safe_to_recreate_vm = 1;
5162 }
5163
5164 // Creation failed. We must reset vm_created
5165 *vm = 0;
5166 *(JNIEnv**)penv = 0;
5167 // reset vm_created last to avoid race condition. Use OrderAccess to
5168 // control both compiler and architectural-based reordering.
5169 OrderAccess::release_store(&vm_created, 0);
5170 }
5171
5172 return result;
5173 }
5174
5175 #ifndef USDT2
5176 HS_DTRACE_PROBE_DECL3(hotspot_jni, GetCreatedJavaVMs__entry, \
5177 JavaVM**, jsize, jsize*);
5178 HS_DTRACE_PROBE_DECL1(hotspot_jni, GetCreatedJavaVMs__return, jint);
5179 #endif /* !USDT2 */
5180
5181 _JNI_IMPORT_OR_EXPORT_ jint JNICALL JNI_GetCreatedJavaVMs(JavaVM **vm_buf, jsize bufLen, jsize *numVMs) {
5182 // See bug 4367188, the wrapper can sometimes cause VM crashes
5183 // JNIWrapper("GetCreatedJavaVMs");
5184 #ifndef USDT2
5185 HS_DTRACE_PROBE3(hotspot_jni, GetCreatedJavaVMs__entry, \
5186 vm_buf, bufLen, numVMs);
5187 #else /* USDT2 */
5188 HOTSPOT_JNI_GETCREATEDJAVAVMS_ENTRY(
5189 (void **) vm_buf, bufLen, (uintptr_t *) numVMs);
5190 #endif /* USDT2 */
5191 if (vm_created) {
5192 if (numVMs != NULL) *numVMs = 1;
5193 if (bufLen > 0) *vm_buf = (JavaVM *)(&main_vm);
5194 } else {
5195 if (numVMs != NULL) *numVMs = 0;
5196 }
5197 #ifndef USDT2
5198 HS_DTRACE_PROBE1(hotspot_jni, GetCreatedJavaVMs__return, JNI_OK);
5199 #else /* USDT2 */
5200 HOTSPOT_JNI_GETCREATEDJAVAVMS_RETURN(
5201 JNI_OK);
5202 #endif /* USDT2 */
5203 return JNI_OK;
5204 }
5205
5206 extern "C" {
5207
5208 #ifndef USDT2
5209 DT_RETURN_MARK_DECL(DestroyJavaVM, jint);
5210 #else /* USDT2 */
5211 DT_RETURN_MARK_DECL(DestroyJavaVM, jint
5212 , HOTSPOT_JNI_DESTROYJAVAVM_RETURN(_ret_ref));
5213 #endif /* USDT2 */
5214
5215 jint JNICALL jni_DestroyJavaVM(JavaVM *vm) {
5216 #ifndef USDT2
5217 DTRACE_PROBE1(hotspot_jni, DestroyJavaVM__entry, vm);
5218 #else /* USDT2 */
5219 HOTSPOT_JNI_DESTROYJAVAVM_ENTRY(
5220 vm);
5221 #endif /* USDT2 */
5222 jint res = JNI_ERR;
5223 DT_RETURN_MARK(DestroyJavaVM, jint, (const jint&)res);
5224
5225 if (!vm_created) {
5226 res = JNI_ERR;
5227 return res;
5228 }
5229
5230 JNIWrapper("DestroyJavaVM");
5231 JNIEnv *env;
5232 JavaVMAttachArgs destroyargs;
5233 destroyargs.version = CurrentVersion;
5234 destroyargs.name = (char *)"DestroyJavaVM";
5235 destroyargs.group = NULL;
5236 res = vm->AttachCurrentThread((void **)&env, (void *)&destroyargs);
5237 if (res != JNI_OK) {
5238 return res;
5239 }
5240
5241 // Since this is not a JVM_ENTRY we have to set the thread state manually before entering.
5242 JavaThread* thread = JavaThread::current();
5243 ThreadStateTransition::transition_from_native(thread, _thread_in_vm);
5244 if (Threads::destroy_vm()) {
5245 // Should not change thread state, VM is gone
5246 vm_created = false;
5247 res = JNI_OK;
5248 return res;
5249 } else {
5250 ThreadStateTransition::transition_and_fence(thread, _thread_in_vm, _thread_in_native);
5251 res = JNI_ERR;
5252 return res;
5253 }
5254 }
5255
5256
5257 static jint attach_current_thread(JavaVM *vm, void **penv, void *_args, bool daemon) {
5258 JavaVMAttachArgs *args = (JavaVMAttachArgs *) _args;
5259
5260 // Check below commented out from JDK1.2fcs as well
5261 /*
5262 if (args && (args->version != JNI_VERSION_1_1 || args->version != JNI_VERSION_1_2)) {
5263 return JNI_EVERSION;
5264 }
5265 */
5266
5267 Thread* t = ThreadLocalStorage::get_thread_slow();
5268 if (t != NULL) {
5269 // If the thread has been attached this operation is a no-op
5270 *(JNIEnv**)penv = ((JavaThread*) t)->jni_environment();
5271 return JNI_OK;
5272 }
5273
5274 // Create a thread and mark it as attaching so it will be skipped by the
5275 // ThreadsListEnumerator - see CR 6404306
5276 JavaThread* thread = new JavaThread(true);
5277
5278 // Set correct safepoint info. The thread is going to call into Java when
5279 // initializing the Java level thread object. Hence, the correct state must
5280 // be set in order for the Safepoint code to deal with it correctly.
5281 thread->set_thread_state(_thread_in_vm);
5282 // Must do this before initialize_thread_local_storage
5283 thread->record_stack_base_and_size();
5284
5285 thread->initialize_thread_local_storage();
5286
5287 if (!os::create_attached_thread(thread)) {
5288 delete thread;
5289 return JNI_ERR;
5290 }
5291 // Enable stack overflow checks
5292 thread->create_stack_guard_pages();
5293
5294 thread->initialize_tlab();
5295
5296 thread->cache_global_variables();
5297
5298 // Crucial that we do not have a safepoint check for this thread, since it has
5299 // not been added to the Thread list yet.
5300 { Threads_lock->lock_without_safepoint_check();
5301 // This must be inside this lock in order to get FullGCALot to work properly, i.e., to
5302 // avoid this thread trying to do a GC before it is added to the thread-list
5303 thread->set_active_handles(JNIHandleBlock::allocate_block());
5304 Threads::add(thread, daemon);
5305 Threads_lock->unlock();
5306 }
5307 // Create thread group and name info from attach arguments
5308 oop group = NULL;
5309 char* thread_name = NULL;
5310 if (args != NULL && Threads::is_supported_jni_version(args->version)) {
5311 group = JNIHandles::resolve(args->group);
5312 thread_name = args->name; // may be NULL
5313 }
5314 if (group == NULL) group = Universe::main_thread_group();
5315
5316 // Create Java level thread object and attach it to this thread
5317 bool attach_failed = false;
5318 {
5319 EXCEPTION_MARK;
5320 HandleMark hm(THREAD);
5321 Handle thread_group(THREAD, group);
5322 thread->allocate_threadObj(thread_group, thread_name, daemon, THREAD);
5323 if (HAS_PENDING_EXCEPTION) {
5324 CLEAR_PENDING_EXCEPTION;
5325 // cleanup outside the handle mark.
5326 attach_failed = true;
5327 }
5328 }
5329
5330 if (attach_failed) {
5331 // Added missing cleanup
5332 thread->cleanup_failed_attach_current_thread();
5333 return JNI_ERR;
5334 }
5335
5336 // mark the thread as no longer attaching
5337 // this uses a fence to push the change through so we don't have
5338 // to regrab the threads_lock
5339 thread->set_done_attaching_via_jni();
5340
5341 // Set java thread status.
5342 java_lang_Thread::set_thread_status(thread->threadObj(),
5343 java_lang_Thread::RUNNABLE);
5344
5345 // Notify the debugger
5346 if (JvmtiExport::should_post_thread_life()) {
5347 JvmtiExport::post_thread_start(thread);
5348 }
5349
5350 EventThreadStart event;
5351 if (event.should_commit()) {
5352 event.set_javalangthread(java_lang_Thread::thread_id(thread->threadObj()));
5353 event.commit();
5354 }
5355
5356 *(JNIEnv**)penv = thread->jni_environment();
5357
5358 // Now leaving the VM, so change thread_state. This is normally automatically taken care
5359 // of in the JVM_ENTRY. But in this situation we have to do it manually. Notice, that by
5360 // using ThreadStateTransition::transition, we do a callback to the safepoint code if
5361 // needed.
5362
5363 ThreadStateTransition::transition_and_fence(thread, _thread_in_vm, _thread_in_native);
5364
5365 // Perform any platform dependent FPU setup
5366 os::setup_fpu();
5367
5368 return JNI_OK;
5369 }
5370
5371
5372 jint JNICALL jni_AttachCurrentThread(JavaVM *vm, void **penv, void *_args) {
5373 #ifndef USDT2
5374 DTRACE_PROBE3(hotspot_jni, AttachCurrentThread__entry, vm, penv, _args);
5375 #else /* USDT2 */
5376 HOTSPOT_JNI_ATTACHCURRENTTHREAD_ENTRY(
5377 vm, penv, _args);
5378 #endif /* USDT2 */
5379 if (!vm_created) {
5380 #ifndef USDT2
5381 DTRACE_PROBE1(hotspot_jni, AttachCurrentThread__return, JNI_ERR);
5382 #else /* USDT2 */
5383 HOTSPOT_JNI_ATTACHCURRENTTHREAD_RETURN(
5384 (uint32_t) JNI_ERR);
5385 #endif /* USDT2 */
5386 return JNI_ERR;
5387 }
5388
5389 JNIWrapper("AttachCurrentThread");
5390 jint ret = attach_current_thread(vm, penv, _args, false);
5391 #ifndef USDT2
5392 DTRACE_PROBE1(hotspot_jni, AttachCurrentThread__return, ret);
5393 #else /* USDT2 */
5394 HOTSPOT_JNI_ATTACHCURRENTTHREAD_RETURN(
5395 ret);
5396 #endif /* USDT2 */
5397 return ret;
5398 }
5399
5400
5401 jint JNICALL jni_DetachCurrentThread(JavaVM *vm) {
5402 #ifndef USDT2
5403 DTRACE_PROBE1(hotspot_jni, DetachCurrentThread__entry, vm);
5404 #else /* USDT2 */
5405 HOTSPOT_JNI_DETACHCURRENTTHREAD_ENTRY(
5406 vm);
5407 #endif /* USDT2 */
5408 VM_Exit::block_if_vm_exited();
5409
5410 JNIWrapper("DetachCurrentThread");
5411
5412 // If the thread has been deattacted the operations is a no-op
5413 if (ThreadLocalStorage::thread() == NULL) {
5414 #ifndef USDT2
5415 DTRACE_PROBE1(hotspot_jni, DetachCurrentThread__return, JNI_OK);
5416 #else /* USDT2 */
5417 HOTSPOT_JNI_DETACHCURRENTTHREAD_RETURN(
5418 JNI_OK);
5419 #endif /* USDT2 */
5420 return JNI_OK;
5421 }
5422
5423 JavaThread* thread = JavaThread::current();
5424 if (thread->has_last_Java_frame()) {
5425 #ifndef USDT2
5426 DTRACE_PROBE1(hotspot_jni, DetachCurrentThread__return, JNI_ERR);
5427 #else /* USDT2 */
5428 HOTSPOT_JNI_DETACHCURRENTTHREAD_RETURN(
5429 (uint32_t) JNI_ERR);
5430 #endif /* USDT2 */
5431 // Can't detach a thread that's running java, that can't work.
5432 return JNI_ERR;
5433 }
5434
5435 // Safepoint support. Have to do call-back to safepoint code, if in the
5436 // middel of a safepoint operation
5437 ThreadStateTransition::transition_from_native(thread, _thread_in_vm);
5438
5439 // XXX: Note that JavaThread::exit() call below removes the guards on the
5440 // stack pages set up via enable_stack_{red,yellow}_zone() calls
5441 // above in jni_AttachCurrentThread. Unfortunately, while the setting
5442 // of the guards is visible in jni_AttachCurrentThread above,
5443 // the removal of the guards is buried below in JavaThread::exit()
5444 // here. The abstraction should be more symmetrically either exposed
5445 // or hidden (e.g. it could probably be hidden in the same
5446 // (platform-dependent) methods where we do alternate stack
5447 // maintenance work?)
5448 thread->exit(false, JavaThread::jni_detach);
5449 delete thread;
5450
5451 #ifndef USDT2
5452 DTRACE_PROBE1(hotspot_jni, DetachCurrentThread__return, JNI_OK);
5453 #else /* USDT2 */
5454 HOTSPOT_JNI_DETACHCURRENTTHREAD_RETURN(
5455 JNI_OK);
5456 #endif /* USDT2 */
5457 return JNI_OK;
5458 }
5459
5460 #ifndef USDT2
5461 DT_RETURN_MARK_DECL(GetEnv, jint);
5462 #else /* USDT2 */
5463 DT_RETURN_MARK_DECL(GetEnv, jint
5464 , HOTSPOT_JNI_GETENV_RETURN(_ret_ref));
5465 #endif /* USDT2 */
5466
5467 jint JNICALL jni_GetEnv(JavaVM *vm, void **penv, jint version) {
5468 #ifndef USDT2
5469 DTRACE_PROBE3(hotspot_jni, GetEnv__entry, vm, penv, version);
5470 #else /* USDT2 */
5471 HOTSPOT_JNI_GETENV_ENTRY(
5472 vm, penv, version);
5473 #endif /* USDT2 */
5474 jint ret = JNI_ERR;
5475 DT_RETURN_MARK(GetEnv, jint, (const jint&)ret);
5476
5477 if (!vm_created) {
5478 *penv = NULL;
5479 ret = JNI_EDETACHED;
5480 return ret;
5481 }
5482
5483 if (JniExportedInterface::GetExportedInterface(vm, penv, version, &ret)) {
5484 return ret;
5485 }
5486
5487 #ifndef JVMPI_VERSION_1
5488 // need these in order to be polite about older agents
5489 #define JVMPI_VERSION_1 ((jint)0x10000001)
5490 #define JVMPI_VERSION_1_1 ((jint)0x10000002)
5491 #define JVMPI_VERSION_1_2 ((jint)0x10000003)
5492 #endif // !JVMPI_VERSION_1
5493
5494 Thread* thread = ThreadLocalStorage::thread();
5495 if (thread != NULL && thread->is_Java_thread()) {
5496 if (Threads::is_supported_jni_version_including_1_1(version)) {
5497 *(JNIEnv**)penv = ((JavaThread*) thread)->jni_environment();
5498 ret = JNI_OK;
5499 return ret;
5500
5501 } else if (version == JVMPI_VERSION_1 ||
5502 version == JVMPI_VERSION_1_1 ||
5503 version == JVMPI_VERSION_1_2) {
5504 tty->print_cr("ERROR: JVMPI, an experimental interface, is no longer supported.");
5505 tty->print_cr("Please use the supported interface: the JVM Tool Interface (JVM TI).");
5506 ret = JNI_EVERSION;
5507 return ret;
5508 } else if (JvmtiExport::is_jvmdi_version(version)) {
5509 tty->print_cr("FATAL ERROR: JVMDI is no longer supported.");
5510 tty->print_cr("Please use the supported interface: the JVM Tool Interface (JVM TI).");
5511 ret = JNI_EVERSION;
5512 return ret;
5513 } else {
5514 *penv = NULL;
5515 ret = JNI_EVERSION;
5516 return ret;
5517 }
5518 } else {
5519 *penv = NULL;
5520 ret = JNI_EDETACHED;
5521 return ret;
5522 }
5523 }
5524
5525
5526 jint JNICALL jni_AttachCurrentThreadAsDaemon(JavaVM *vm, void **penv, void *_args) {
5527 #ifndef USDT2
5528 DTRACE_PROBE3(hotspot_jni, AttachCurrentThreadAsDaemon__entry, vm, penv, _args);
5529 #else /* USDT2 */
5530 HOTSPOT_JNI_ATTACHCURRENTTHREADASDAEMON_ENTRY(
5531 vm, penv, _args);
5532 #endif /* USDT2 */
5533 if (!vm_created) {
5534 #ifndef USDT2
5535 DTRACE_PROBE1(hotspot_jni, AttachCurrentThreadAsDaemon__return, JNI_ERR);
5536 #else /* USDT2 */
5537 HOTSPOT_JNI_ATTACHCURRENTTHREADASDAEMON_RETURN(
5538 (uint32_t) JNI_ERR);
5539 #endif /* USDT2 */
5540 return JNI_ERR;
5541 }
5542
5543 JNIWrapper("AttachCurrentThreadAsDaemon");
5544 jint ret = attach_current_thread(vm, penv, _args, true);
5545 #ifndef USDT2
5546 DTRACE_PROBE1(hotspot_jni, AttachCurrentThreadAsDaemon__return, ret);
5547 #else /* USDT2 */
5548 HOTSPOT_JNI_ATTACHCURRENTTHREADASDAEMON_RETURN(
5549 ret);
5550 #endif /* USDT2 */
5551 return ret;
5552 }
5553
5554
5555 } // End extern "C"
5556
5557 const struct JNIInvokeInterface_ jni_InvokeInterface = {
5558 NULL,
5559 NULL,
5560 NULL,
5561
5562 jni_DestroyJavaVM,
5563 jni_AttachCurrentThread,
5564 jni_DetachCurrentThread,
5565 jni_GetEnv,
5566 jni_AttachCurrentThreadAsDaemon
5567 };