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