1 /*
2 * Copyright (c) 1997, 2013, Oracle and/or its affiliates. All rights reserved.
3 * Copyright (c) 2012 Red Hat, Inc.
4 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
5 *
6 * This code is free software; you can redistribute it and/or modify it
7 * under the terms of the GNU General Public License version 2 only, as
8 * published by the Free Software Foundation.
9 *
10 * This code is distributed in the hope that it will be useful, but WITHOUT
11 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
12 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
13 * version 2 for more details (a copy is included in the LICENSE file that
14 * accompanied this code).
15 *
16 * You should have received a copy of the GNU General Public License version
17 * 2 along with this work; if not, write to the Free Software Foundation,
18 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
19 *
20 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
21 * or visit www.oracle.com if you need additional information or have any
22 * questions.
23 *
24 */
25
26 #include "precompiled.hpp"
27 #include "ci/ciReplay.hpp"
28 #include "classfile/altHashing.hpp"
29 #include "classfile/classLoader.hpp"
30 #include "classfile/javaClasses.hpp"
31 #include "classfile/symbolTable.hpp"
32 #include "classfile/systemDictionary.hpp"
33 #include "classfile/vmSymbols.hpp"
34 #include "interpreter/linkResolver.hpp"
35 #include "utilities/macros.hpp"
36 #if INCLUDE_ALL_GCS
37 #include "gc_implementation/g1/g1SATBCardTableModRefBS.hpp"
38 #endif // INCLUDE_ALL_GCS
39 #include "memory/allocation.hpp"
40 #include "memory/allocation.inline.hpp"
41 #include "memory/gcLocker.inline.hpp"
42 #include "memory/oopFactory.hpp"
43 #include "memory/universe.inline.hpp"
44 #include "oops/instanceKlass.hpp"
45 #include "oops/instanceOop.hpp"
46 #include "oops/markOop.hpp"
47 #include "oops/method.hpp"
48 #include "oops/objArrayKlass.hpp"
49 #include "oops/objArrayOop.hpp"
50 #include "oops/oop.inline.hpp"
51 #include "oops/symbol.hpp"
52 #include "oops/typeArrayKlass.hpp"
53 #include "oops/typeArrayOop.hpp"
54 #include "prims/jni.h"
55 #include "prims/jniCheck.hpp"
56 #include "prims/jniExport.hpp"
57 #include "prims/jniFastGetField.hpp"
58 #include "prims/jvm.h"
59 #include "prims/jvm_misc.hpp"
60 #include "prims/jvmtiExport.hpp"
61 #include "prims/jvmtiThreadState.hpp"
62 #include "runtime/compilationPolicy.hpp"
63 #include "runtime/fieldDescriptor.hpp"
64 #include "runtime/fprofiler.hpp"
65 #include "runtime/handles.inline.hpp"
66 #include "runtime/interfaceSupport.hpp"
67 #include "runtime/java.hpp"
68 #include "runtime/javaCalls.hpp"
69 #include "runtime/jfieldIDWorkaround.hpp"
70 #include "runtime/reflection.hpp"
71 #include "runtime/sharedRuntime.hpp"
72 #include "runtime/signature.hpp"
73 #include "runtime/thread.inline.hpp"
74 #include "runtime/vm_operations.hpp"
75 #include "services/runtimeService.hpp"
76 #include "trace/tracing.hpp"
77 #include "utilities/defaultStream.hpp"
78 #include "utilities/dtrace.hpp"
79 #include "utilities/events.hpp"
80 #include "utilities/histogram.hpp"
81 #ifdef TARGET_OS_FAMILY_linux
82 # include "os_linux.inline.hpp"
83 #endif
84 #ifdef TARGET_OS_FAMILY_solaris
85 # include "os_solaris.inline.hpp"
86 #endif
87 #ifdef TARGET_OS_FAMILY_windows
88 # include "os_windows.inline.hpp"
89 #endif
90 #ifdef TARGET_OS_FAMILY_bsd
91 # include "os_bsd.inline.hpp"
92 #endif
93
94 static jint CurrentVersion = JNI_VERSION_1_8;
95
96
97 // The DT_RETURN_MARK macros create a scoped object to fire the dtrace
98 // '-return' probe regardless of the return path is taken out of the function.
99 // Methods that have multiple return paths use this to avoid having to
100 // instrument each return path. Methods that use CHECK or THROW must use this
101 // since those macros can cause an immedate uninstrumented return.
102 //
103 // In order to get the return value, a reference to the variable containing
104 // the return value must be passed to the contructor of the object, and
105 // the return value must be set before return (since the mark object has
106 // a reference to it).
107 //
108 // Example:
109 // DT_RETURN_MARK_DECL(SomeFunc, int);
110 // JNI_ENTRY(int, SomeFunc, ...)
111 // int return_value = 0;
112 // DT_RETURN_MARK(SomeFunc, int, (const int&)return_value);
113 // foo(CHECK_0)
114 // return_value = 5;
115 // return return_value;
116 // JNI_END
117 #ifndef USDT2
118 #define DT_RETURN_MARK_DECL(name, type) \
119 HS_DTRACE_PROBE_DECL1(hotspot_jni, name##__return, type); \
120 DTRACE_ONLY( \
121 class DTraceReturnProbeMark_##name { \
122 public: \
123 const type& _ret_ref; \
124 DTraceReturnProbeMark_##name(const type& v) : _ret_ref(v) {} \
125 ~DTraceReturnProbeMark_##name() { \
126 HS_DTRACE_PROBE1(hotspot_jni, name##__return, _ret_ref); \
127 } \
128 } \
129 )
130 // Void functions are simpler since there's no return value
131 #define DT_VOID_RETURN_MARK_DECL(name) \
132 HS_DTRACE_PROBE_DECL0(hotspot_jni, name##__return); \
133 DTRACE_ONLY( \
134 class DTraceReturnProbeMark_##name { \
135 public: \
136 ~DTraceReturnProbeMark_##name() { \
137 HS_DTRACE_PROBE0(hotspot_jni, name##__return); \
138 } \
139 } \
140 )
141
142 #else /* USDT2 */
143
144 #define DT_RETURN_MARK_DECL(name, type, probe) \
145 DTRACE_ONLY( \
146 class DTraceReturnProbeMark_##name { \
147 public: \
148 const type& _ret_ref; \
149 DTraceReturnProbeMark_##name(const type& v) : _ret_ref(v) {} \
150 ~DTraceReturnProbeMark_##name() { \
151 probe; \
152 } \
153 } \
154 )
155 // Void functions are simpler since there's no return value
156 #define DT_VOID_RETURN_MARK_DECL(name, probe) \
157 DTRACE_ONLY( \
158 class DTraceReturnProbeMark_##name { \
159 public: \
160 ~DTraceReturnProbeMark_##name() { \
161 probe; \
162 } \
163 } \
164 )
165 #endif /* USDT2 */
166
167 // Place these macros in the function to mark the return. Non-void
168 // functions need the type and address of the return value.
169 #define DT_RETURN_MARK(name, type, ref) \
170 DTRACE_ONLY( DTraceReturnProbeMark_##name dtrace_return_mark(ref) )
171 #define DT_VOID_RETURN_MARK(name) \
172 DTRACE_ONLY( DTraceReturnProbeMark_##name dtrace_return_mark )
173
174
175 // Use these to select distinct code for floating-point vs. non-floating point
176 // situations. Used from within common macros where we need slightly
177 // different behavior for Float/Double
178 #define FP_SELECT_Boolean(intcode, fpcode) intcode
179 #define FP_SELECT_Byte(intcode, fpcode) intcode
180 #define FP_SELECT_Char(intcode, fpcode) intcode
181 #define FP_SELECT_Short(intcode, fpcode) intcode
182 #define FP_SELECT_Object(intcode, fpcode) intcode
183 #define FP_SELECT_Int(intcode, fpcode) intcode
184 #define FP_SELECT_Long(intcode, fpcode) intcode
185 #define FP_SELECT_Float(intcode, fpcode) fpcode
186 #define FP_SELECT_Double(intcode, fpcode) fpcode
187 #define FP_SELECT(TypeName, intcode, fpcode) \
188 FP_SELECT_##TypeName(intcode, fpcode)
189
190 #define COMMA ,
191
192 // Choose DT_RETURN_MARK macros based on the type: float/double -> void
193 // (dtrace doesn't do FP yet)
194 #ifndef USDT2
195 #define DT_RETURN_MARK_DECL_FOR(TypeName, name, type) \
196 FP_SELECT(TypeName, \
197 DT_RETURN_MARK_DECL(name, type), DT_VOID_RETURN_MARK_DECL(name) )
198 #else /* USDT2 */
199 #define DT_RETURN_MARK_DECL_FOR(TypeName, name, type, probe) \
200 FP_SELECT(TypeName, \
201 DT_RETURN_MARK_DECL(name, type, probe), DT_VOID_RETURN_MARK_DECL(name, probe) )
202 #endif /* USDT2 */
203 #define DT_RETURN_MARK_FOR(TypeName, name, type, ref) \
204 FP_SELECT(TypeName, \
205 DT_RETURN_MARK(name, type, ref), DT_VOID_RETURN_MARK(name) )
206
207
208 // out-of-line helpers for class jfieldIDWorkaround:
209
210 bool jfieldIDWorkaround::is_valid_jfieldID(Klass* k, jfieldID id) {
211 if (jfieldIDWorkaround::is_instance_jfieldID(k, id)) {
212 uintptr_t as_uint = (uintptr_t) id;
213 intptr_t offset = raw_instance_offset(id);
214 if (is_checked_jfieldID(id)) {
215 if (!klass_hash_ok(k, id)) {
216 return false;
217 }
218 }
219 return InstanceKlass::cast(k)->contains_field_offset(offset);
220 } else {
221 JNIid* result = (JNIid*) id;
222 #ifdef ASSERT
223 return result != NULL && result->is_static_field_id();
224 #else
225 return result != NULL;
226 #endif
227 }
228 }
229
230
231 intptr_t jfieldIDWorkaround::encode_klass_hash(Klass* k, intptr_t offset) {
232 if (offset <= small_offset_mask) {
233 Klass* field_klass = k;
234 Klass* super_klass = field_klass->super();
235 // With compressed oops the most super class with nonstatic fields would
236 // be the owner of fields embedded in the header.
237 while (InstanceKlass::cast(super_klass)->has_nonstatic_fields() &&
238 InstanceKlass::cast(super_klass)->contains_field_offset(offset)) {
239 field_klass = super_klass; // super contains the field also
240 super_klass = field_klass->super();
241 }
242 debug_only(No_Safepoint_Verifier nosafepoint;)
243 uintptr_t klass_hash = field_klass->identity_hash();
244 return ((klass_hash & klass_mask) << klass_shift) | checked_mask_in_place;
245 } else {
246 #if 0
247 #ifndef PRODUCT
248 {
249 ResourceMark rm;
250 warning("VerifyJNIFields: long offset %d in %s", offset, k->external_name());
251 }
252 #endif
253 #endif
254 return 0;
255 }
256 }
257
258 bool jfieldIDWorkaround::klass_hash_ok(Klass* k, jfieldID id) {
259 uintptr_t as_uint = (uintptr_t) id;
260 intptr_t klass_hash = (as_uint >> klass_shift) & klass_mask;
261 do {
262 debug_only(No_Safepoint_Verifier nosafepoint;)
263 // Could use a non-blocking query for identity_hash here...
264 if ((k->identity_hash() & klass_mask) == klass_hash)
265 return true;
266 k = k->super();
267 } while (k != NULL);
268 return false;
269 }
270
271 void jfieldIDWorkaround::verify_instance_jfieldID(Klass* k, jfieldID id) {
272 guarantee(jfieldIDWorkaround::is_instance_jfieldID(k, id), "must be an instance field" );
273 uintptr_t as_uint = (uintptr_t) id;
274 intptr_t offset = raw_instance_offset(id);
275 if (VerifyJNIFields) {
276 if (is_checked_jfieldID(id)) {
277 guarantee(klass_hash_ok(k, id),
278 "Bug in native code: jfieldID class must match object");
279 } else {
280 #if 0
281 #ifndef PRODUCT
282 if (Verbose) {
283 ResourceMark rm;
284 warning("VerifyJNIFields: unverified offset %d for %s", offset, k->external_name());
285 }
286 #endif
287 #endif
288 }
289 }
290 guarantee(InstanceKlass::cast(k)->contains_field_offset(offset),
291 "Bug in native code: jfieldID offset must address interior of object");
292 }
293
294 // Pick a reasonable higher bound for local capacity requested
295 // for EnsureLocalCapacity and PushLocalFrame. We don't want it too
296 // high because a test (or very unusual application) may try to allocate
297 // that many handles and run out of swap space. An implementation is
298 // permitted to allocate more handles than the ensured capacity, so this
299 // value is set high enough to prevent compatibility problems.
300 const int MAX_REASONABLE_LOCAL_CAPACITY = 4*K;
301
302
303 // Wrapper to trace JNI functions
304
305 #ifdef ASSERT
306 Histogram* JNIHistogram;
307 static volatile jint JNIHistogram_lock = 0;
308
309 class JNITraceWrapper : public StackObj {
310 public:
311 JNITraceWrapper(const char* format, ...) {
312 if (TraceJNICalls) {
313 va_list ap;
314 va_start(ap, format);
315 tty->print("JNI ");
316 tty->vprint_cr(format, ap);
317 va_end(ap);
318 }
319 }
320 };
321
322 class JNIHistogramElement : public HistogramElement {
323 public:
324 JNIHistogramElement(const char* name);
325 };
326
327 JNIHistogramElement::JNIHistogramElement(const char* elementName) {
328 _name = elementName;
329 uintx count = 0;
330
331 while (Atomic::cmpxchg(1, &JNIHistogram_lock, 0) != 0) {
332 while (OrderAccess::load_acquire(&JNIHistogram_lock) != 0) {
333 count +=1;
334 if ( (WarnOnStalledSpinLock > 0)
335 && (count % WarnOnStalledSpinLock == 0)) {
336 warning("JNIHistogram_lock seems to be stalled");
337 }
338 }
339 }
340
341
342 if(JNIHistogram == NULL)
343 JNIHistogram = new Histogram("JNI Call Counts",100);
344
345 JNIHistogram->add_element(this);
346 Atomic::dec(&JNIHistogram_lock);
347 }
348
349 #define JNICountWrapper(arg) \
350 static JNIHistogramElement* e = new JNIHistogramElement(arg); \
351 /* There is a MT-race condition in VC++. So we need to make sure that that e has been initialized */ \
352 if (e != NULL) e->increment_count()
353 #define JNIWrapper(arg) JNICountWrapper(arg); JNITraceWrapper(arg)
354 #else
355 #define JNIWrapper(arg)
356 #endif
357
358
359 // Implementation of JNI entries
360
361 #ifndef USDT2
362 DT_RETURN_MARK_DECL(DefineClass, jclass);
363 #else /* USDT2 */
364 DT_RETURN_MARK_DECL(DefineClass, jclass
365 , HOTSPOT_JNI_DEFINECLASS_RETURN(_ret_ref));
366 #endif /* USDT2 */
367
368 JNI_ENTRY(jclass, jni_DefineClass(JNIEnv *env, const char *name, jobject loaderRef,
369 const jbyte *buf, jsize bufLen))
370 JNIWrapper("DefineClass");
371
372 #ifndef USDT2
373 DTRACE_PROBE5(hotspot_jni, DefineClass__entry,
374 env, name, loaderRef, buf, bufLen);
375 #else /* USDT2 */
376 HOTSPOT_JNI_DEFINECLASS_ENTRY(
377 env, (char*) name, loaderRef, (char*) buf, bufLen);
378 #endif /* USDT2 */
379 jclass cls = NULL;
380 DT_RETURN_MARK(DefineClass, jclass, (const jclass&)cls);
381
382 TempNewSymbol class_name = NULL;
383 // Since exceptions can be thrown, class initialization can take place
384 // if name is NULL no check for class name in .class stream has to be made.
385 if (name != NULL) {
386 const int str_len = (int)strlen(name);
387 if (str_len > Symbol::max_length()) {
388 // It's impossible to create this class; the name cannot fit
389 // into the constant pool.
390 THROW_MSG_0(vmSymbols::java_lang_NoClassDefFoundError(), name);
391 }
392 class_name = SymbolTable::new_symbol(name, CHECK_NULL);
393 }
394 ResourceMark rm(THREAD);
395 ClassFileStream st((u1*) buf, bufLen, NULL);
396 Handle class_loader (THREAD, JNIHandles::resolve(loaderRef));
397
398 if (UsePerfData && !class_loader.is_null()) {
399 // check whether the current caller thread holds the lock or not.
400 // If not, increment the corresponding counter
401 if (ObjectSynchronizer::
402 query_lock_ownership((JavaThread*)THREAD, class_loader) !=
403 ObjectSynchronizer::owner_self) {
404 ClassLoader::sync_JNIDefineClassLockFreeCounter()->inc();
405 }
406 }
407 Klass* k = SystemDictionary::resolve_from_stream(class_name, class_loader,
408 Handle(), &st, true,
409 CHECK_NULL);
410
411 if (TraceClassResolution && k != NULL) {
412 trace_class_resolution(k);
413 }
414
415 cls = (jclass)JNIHandles::make_local(
416 env, k->java_mirror());
417 return cls;
418 JNI_END
419
420
421
422 static bool first_time_FindClass = true;
423
424 #ifndef USDT2
425 DT_RETURN_MARK_DECL(FindClass, jclass);
426 #else /* USDT2 */
427 DT_RETURN_MARK_DECL(FindClass, jclass
428 , HOTSPOT_JNI_FINDCLASS_RETURN(_ret_ref));
429 #endif /* USDT2 */
430
431 JNI_ENTRY(jclass, jni_FindClass(JNIEnv *env, const char *name))
432 JNIWrapper("FindClass");
433 #ifndef USDT2
434 DTRACE_PROBE2(hotspot_jni, FindClass__entry, env, name);
435 #else /* USDT2 */
436 HOTSPOT_JNI_FINDCLASS_ENTRY(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 k()->check_valid_for_instantiation(false, CHECK_NULL);
1359 InstanceKlass::cast(k())->initialize(CHECK_NULL);
1360 instanceOop ih = InstanceKlass::cast(k())->allocate_instance(THREAD);
1361 return ih;
1362 }
1363
1364 #ifndef USDT2
1365 DT_RETURN_MARK_DECL(AllocObject, jobject);
1366 #else /* USDT2 */
1367 DT_RETURN_MARK_DECL(AllocObject, jobject
1368 , HOTSPOT_JNI_ALLOCOBJECT_RETURN(_ret_ref));
1369 #endif /* USDT2 */
1370
1371 JNI_ENTRY(jobject, jni_AllocObject(JNIEnv *env, jclass clazz))
1372 JNIWrapper("AllocObject");
1373
1374 #ifndef USDT2
1375 DTRACE_PROBE2(hotspot_jni, AllocObject__entry, env, clazz);
1376 #else /* USDT2 */
1377 HOTSPOT_JNI_ALLOCOBJECT_ENTRY(env, clazz);
1378 #endif /* USDT2 */
1379 jobject ret = NULL;
1380 DT_RETURN_MARK(AllocObject, jobject, (const jobject&)ret);
1381
1382 instanceOop i = alloc_object(clazz, CHECK_NULL);
1383 ret = JNIHandles::make_local(env, i);
1384 return ret;
1385 JNI_END
1386
1387 #ifndef USDT2
1388 DT_RETURN_MARK_DECL(NewObjectA, jobject);
1389 #else /* USDT2 */
1390 DT_RETURN_MARK_DECL(NewObjectA, jobject
1391 , HOTSPOT_JNI_NEWOBJECTA_RETURN(_ret_ref));
1392 #endif /* USDT2 */
1393
1394 JNI_ENTRY(jobject, jni_NewObjectA(JNIEnv *env, jclass clazz, jmethodID methodID, const jvalue *args))
1395 JNIWrapper("NewObjectA");
1396 #ifndef USDT2
1397 DTRACE_PROBE3(hotspot_jni, NewObjectA__entry, env, clazz, methodID);
1398 #else /* USDT2 */
1399 HOTSPOT_JNI_NEWOBJECTA_ENTRY(env, clazz, (uintptr_t) methodID);
1400 #endif /* USDT2 */
1401 jobject obj = NULL;
1402 DT_RETURN_MARK(NewObjectA, jobject, (const jobject)obj);
1403
1404 instanceOop i = alloc_object(clazz, CHECK_NULL);
1405 obj = JNIHandles::make_local(env, i);
1406 JavaValue jvalue(T_VOID);
1407 JNI_ArgumentPusherArray ap(methodID, args);
1408 jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK_NULL);
1409 return obj;
1410 JNI_END
1411
1412 #ifndef USDT2
1413 DT_RETURN_MARK_DECL(NewObjectV, jobject);
1414 #else /* USDT2 */
1415 DT_RETURN_MARK_DECL(NewObjectV, jobject
1416 , HOTSPOT_JNI_NEWOBJECTV_RETURN(_ret_ref));
1417 #endif /* USDT2 */
1418
1419 JNI_ENTRY(jobject, jni_NewObjectV(JNIEnv *env, jclass clazz, jmethodID methodID, va_list args))
1420 JNIWrapper("NewObjectV");
1421 #ifndef USDT2
1422 DTRACE_PROBE3(hotspot_jni, NewObjectV__entry, env, clazz, methodID);
1423 #else /* USDT2 */
1424 HOTSPOT_JNI_NEWOBJECTV_ENTRY(env, clazz, (uintptr_t) methodID);
1425 #endif /* USDT2 */
1426 jobject obj = NULL;
1427 DT_RETURN_MARK(NewObjectV, jobject, (const jobject&)obj);
1428
1429 instanceOop i = alloc_object(clazz, CHECK_NULL);
1430 obj = JNIHandles::make_local(env, i);
1431 JavaValue jvalue(T_VOID);
1432 JNI_ArgumentPusherVaArg ap(methodID, args);
1433 jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK_NULL);
1434 return obj;
1435 JNI_END
1436
1437 #ifndef USDT2
1438 DT_RETURN_MARK_DECL(NewObject, jobject);
1439 #else /* USDT2 */
1440 DT_RETURN_MARK_DECL(NewObject, jobject
1441 , HOTSPOT_JNI_NEWOBJECT_RETURN(_ret_ref));
1442 #endif /* USDT2 */
1443
1444 JNI_ENTRY(jobject, jni_NewObject(JNIEnv *env, jclass clazz, jmethodID methodID, ...))
1445 JNIWrapper("NewObject");
1446 #ifndef USDT2
1447 DTRACE_PROBE3(hotspot_jni, NewObject__entry, env, clazz, methodID);
1448 #else /* USDT2 */
1449 HOTSPOT_JNI_NEWOBJECT_ENTRY(env, clazz, (uintptr_t) methodID);
1450 #endif /* USDT2 */
1451 jobject obj = NULL;
1452 DT_RETURN_MARK(NewObject, jobject, (const jobject&)obj);
1453
1454 instanceOop i = alloc_object(clazz, CHECK_NULL);
1455 obj = JNIHandles::make_local(env, i);
1456 va_list args;
1457 va_start(args, methodID);
1458 JavaValue jvalue(T_VOID);
1459 JNI_ArgumentPusherVaArg ap(methodID, args);
1460 jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK_NULL);
1461 va_end(args);
1462 return obj;
1463 JNI_END
1464
1465
1466 JNI_ENTRY(jclass, jni_GetObjectClass(JNIEnv *env, jobject obj))
1467 JNIWrapper("GetObjectClass");
1468 #ifndef USDT2
1469 DTRACE_PROBE2(hotspot_jni, GetObjectClass__entry, env, obj);
1470 #else /* USDT2 */
1471 HOTSPOT_JNI_GETOBJECTCLASS_ENTRY(env, obj);
1472 #endif /* USDT2 */
1473 Klass* k = JNIHandles::resolve_non_null(obj)->klass();
1474 jclass ret =
1475 (jclass) JNIHandles::make_local(env, k->java_mirror());
1476 #ifndef USDT2
1477 DTRACE_PROBE1(hotspot_jni, GetObjectClass__return, ret);
1478 #else /* USDT2 */
1479 HOTSPOT_JNI_GETOBJECTCLASS_RETURN(ret);
1480 #endif /* USDT2 */
1481 return ret;
1482 JNI_END
1483
1484 JNI_QUICK_ENTRY(jboolean, jni_IsInstanceOf(JNIEnv *env, jobject obj, jclass clazz))
1485 JNIWrapper("IsInstanceOf");
1486 #ifndef USDT2
1487 DTRACE_PROBE3(hotspot_jni, IsInstanceOf__entry, env, obj, clazz);
1488 #else /* USDT2 */
1489 HOTSPOT_JNI_ISINSTANCEOF_ENTRY(env, obj, clazz);
1490 #endif /* USDT2 */
1491 jboolean ret = JNI_TRUE;
1492 if (obj != NULL) {
1493 ret = JNI_FALSE;
1494 Klass* k = java_lang_Class::as_Klass(
1495 JNIHandles::resolve_non_null(clazz));
1496 if (k != NULL) {
1497 ret = JNIHandles::resolve_non_null(obj)->is_a(k) ? JNI_TRUE : JNI_FALSE;
1498 }
1499 }
1500 #ifndef USDT2
1501 DTRACE_PROBE1(hotspot_jni, IsInstanceOf__return, ret);
1502 #else /* USDT2 */
1503 HOTSPOT_JNI_ISINSTANCEOF_RETURN(ret);
1504 #endif /* USDT2 */
1505 return ret;
1506 JNI_END
1507
1508
1509 static jmethodID get_method_id(JNIEnv *env, jclass clazz, const char *name_str,
1510 const char *sig, bool is_static, TRAPS) {
1511 // %%%% This code should probably just call into a method in the LinkResolver
1512 //
1513 // The class should have been loaded (we have an instance of the class
1514 // passed in) so the method and signature should already be in the symbol
1515 // table. If they're not there, the method doesn't exist.
1516 const char *name_to_probe = (name_str == NULL)
1517 ? vmSymbols::object_initializer_name()->as_C_string()
1518 : name_str;
1519 TempNewSymbol name = SymbolTable::probe(name_to_probe, (int)strlen(name_to_probe));
1520 TempNewSymbol signature = SymbolTable::probe(sig, (int)strlen(sig));
1521
1522 if (name == NULL || signature == NULL) {
1523 THROW_MSG_0(vmSymbols::java_lang_NoSuchMethodError(), name_str);
1524 }
1525
1526 // Throw a NoSuchMethodError exception if we have an instance of a
1527 // primitive java.lang.Class
1528 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(clazz))) {
1529 THROW_MSG_0(vmSymbols::java_lang_NoSuchMethodError(), name_str);
1530 }
1531
1532 KlassHandle klass(THREAD,
1533 java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz)));
1534
1535 // Make sure class is linked and initialized before handing id's out to
1536 // Method*s.
1537 klass()->initialize(CHECK_NULL);
1538
1539 Method* m;
1540 if (name == vmSymbols::object_initializer_name() ||
1541 name == vmSymbols::class_initializer_name()) {
1542 // Never search superclasses for constructors
1543 if (klass->oop_is_instance()) {
1544 m = InstanceKlass::cast(klass())->find_method(name, signature);
1545 } else {
1546 m = NULL;
1547 }
1548 } else {
1549 m = klass->lookup_method(name, signature);
1550 if (m == NULL && klass->oop_is_instance()) {
1551 m = InstanceKlass::cast(klass())->lookup_method_in_ordered_interfaces(name, signature);
1552 }
1553 }
1554 if (m == NULL || (m->is_static() != is_static)) {
1555 THROW_MSG_0(vmSymbols::java_lang_NoSuchMethodError(), name_str);
1556 }
1557 return m->jmethod_id();
1558 }
1559
1560
1561 JNI_ENTRY(jmethodID, jni_GetMethodID(JNIEnv *env, jclass clazz,
1562 const char *name, const char *sig))
1563 JNIWrapper("GetMethodID");
1564 #ifndef USDT2
1565 DTRACE_PROBE4(hotspot_jni, GetMethodID__entry, env, clazz, name, sig);
1566 #else /* USDT2 */
1567 HOTSPOT_JNI_GETMETHODID_ENTRY(env, clazz, (char *) name, (char *) sig);
1568 #endif /* USDT2 */
1569 jmethodID ret = get_method_id(env, clazz, name, sig, false, thread);
1570 #ifndef USDT2
1571 DTRACE_PROBE1(hotspot_jni, GetMethodID__return, ret);
1572 #else /* USDT2 */
1573 HOTSPOT_JNI_GETMETHODID_RETURN((uintptr_t) ret);
1574 #endif /* USDT2 */
1575 return ret;
1576 JNI_END
1577
1578
1579 JNI_ENTRY(jmethodID, jni_GetStaticMethodID(JNIEnv *env, jclass clazz,
1580 const char *name, const char *sig))
1581 JNIWrapper("GetStaticMethodID");
1582 #ifndef USDT2
1583 DTRACE_PROBE4(hotspot_jni, GetStaticMethodID__entry, env, clazz, name, sig);
1584 #else /* USDT2 */
1585 HOTSPOT_JNI_GETSTATICMETHODID_ENTRY(env, (char *) clazz, (char *) name, (char *)sig);
1586 #endif /* USDT2 */
1587 jmethodID ret = get_method_id(env, clazz, name, sig, true, thread);
1588 #ifndef USDT2
1589 DTRACE_PROBE1(hotspot_jni, GetStaticMethodID__return, ret);
1590 #else /* USDT2 */
1591 HOTSPOT_JNI_GETSTATICMETHODID_RETURN((uintptr_t) ret);
1592 #endif /* USDT2 */
1593 return ret;
1594 JNI_END
1595
1596
1597
1598 //
1599 // Calling Methods
1600 //
1601
1602 #ifndef USDT2
1603 #define DEFINE_CALLMETHOD(ResultType, Result, Tag) \
1604 \
1605 DT_RETURN_MARK_DECL_FOR(Result, Call##Result##Method, ResultType);\
1606 DT_RETURN_MARK_DECL_FOR(Result, Call##Result##MethodV, ResultType);\
1607 DT_RETURN_MARK_DECL_FOR(Result, Call##Result##MethodA, ResultType);\
1608 \
1609 JNI_ENTRY(ResultType, \
1610 jni_Call##Result##Method(JNIEnv *env, jobject obj, jmethodID methodID, ...)) \
1611 JNIWrapper("Call" XSTR(Result) "Method"); \
1612 \
1613 DTRACE_PROBE3(hotspot_jni, Call##Result##Method__entry, env, obj, methodID); \
1614 ResultType ret = 0;\
1615 DT_RETURN_MARK_FOR(Result, Call##Result##Method, ResultType, \
1616 (const ResultType&)ret);\
1617 \
1618 va_list args; \
1619 va_start(args, methodID); \
1620 JavaValue jvalue(Tag); \
1621 JNI_ArgumentPusherVaArg ap(methodID, args); \
1622 jni_invoke_nonstatic(env, &jvalue, obj, JNI_VIRTUAL, methodID, &ap, CHECK_0); \
1623 va_end(args); \
1624 ret = jvalue.get_##ResultType(); \
1625 return ret;\
1626 JNI_END \
1627 \
1628 \
1629 JNI_ENTRY(ResultType, \
1630 jni_Call##Result##MethodV(JNIEnv *env, jobject obj, jmethodID methodID, va_list args)) \
1631 JNIWrapper("Call" XSTR(Result) "MethodV"); \
1632 \
1633 DTRACE_PROBE3(hotspot_jni, Call##Result##MethodV__entry, env, obj, methodID); \
1634 ResultType ret = 0;\
1635 DT_RETURN_MARK_FOR(Result, Call##Result##MethodV, ResultType, \
1636 (const ResultType&)ret);\
1637 \
1638 JavaValue jvalue(Tag); \
1639 JNI_ArgumentPusherVaArg ap(methodID, args); \
1640 jni_invoke_nonstatic(env, &jvalue, obj, JNI_VIRTUAL, methodID, &ap, CHECK_0); \
1641 ret = jvalue.get_##ResultType(); \
1642 return ret;\
1643 JNI_END \
1644 \
1645 \
1646 JNI_ENTRY(ResultType, \
1647 jni_Call##Result##MethodA(JNIEnv *env, jobject obj, jmethodID methodID, const jvalue *args)) \
1648 JNIWrapper("Call" XSTR(Result) "MethodA"); \
1649 DTRACE_PROBE3(hotspot_jni, Call##Result##MethodA__entry, env, obj, methodID); \
1650 ResultType ret = 0;\
1651 DT_RETURN_MARK_FOR(Result, Call##Result##MethodA, ResultType, \
1652 (const ResultType&)ret);\
1653 \
1654 JavaValue jvalue(Tag); \
1655 JNI_ArgumentPusherArray ap(methodID, args); \
1656 jni_invoke_nonstatic(env, &jvalue, obj, JNI_VIRTUAL, methodID, &ap, CHECK_0); \
1657 ret = jvalue.get_##ResultType(); \
1658 return ret;\
1659 JNI_END
1660
1661 // the runtime type of subword integral basic types is integer
1662 DEFINE_CALLMETHOD(jboolean, Boolean, T_BOOLEAN)
1663 DEFINE_CALLMETHOD(jbyte, Byte, T_BYTE)
1664 DEFINE_CALLMETHOD(jchar, Char, T_CHAR)
1665 DEFINE_CALLMETHOD(jshort, Short, T_SHORT)
1666
1667 DEFINE_CALLMETHOD(jobject, Object, T_OBJECT)
1668 DEFINE_CALLMETHOD(jint, Int, T_INT)
1669 DEFINE_CALLMETHOD(jlong, Long, T_LONG)
1670 DEFINE_CALLMETHOD(jfloat, Float, T_FLOAT)
1671 DEFINE_CALLMETHOD(jdouble, Double, T_DOUBLE)
1672
1673 DT_VOID_RETURN_MARK_DECL(CallVoidMethod);
1674 DT_VOID_RETURN_MARK_DECL(CallVoidMethodV);
1675 DT_VOID_RETURN_MARK_DECL(CallVoidMethodA);
1676
1677 #else /* USDT2 */
1678
1679 #define DEFINE_CALLMETHOD(ResultType, Result, Tag \
1680 , EntryProbe, ReturnProbe) \
1681 \
1682 DT_RETURN_MARK_DECL_FOR(Result, Call##Result##Method, ResultType \
1683 , ReturnProbe); \
1684 \
1685 JNI_ENTRY(ResultType, \
1686 jni_Call##Result##Method(JNIEnv *env, jobject obj, jmethodID methodID, ...)) \
1687 JNIWrapper("Call" XSTR(Result) "Method"); \
1688 \
1689 EntryProbe; \
1690 ResultType ret = 0;\
1691 DT_RETURN_MARK_FOR(Result, Call##Result##Method, ResultType, \
1692 (const ResultType&)ret);\
1693 \
1694 va_list args; \
1695 va_start(args, methodID); \
1696 JavaValue jvalue(Tag); \
1697 JNI_ArgumentPusherVaArg ap(methodID, args); \
1698 jni_invoke_nonstatic(env, &jvalue, obj, JNI_VIRTUAL, methodID, &ap, CHECK_0); \
1699 va_end(args); \
1700 ret = jvalue.get_##ResultType(); \
1701 return ret;\
1702 JNI_END
1703
1704 // the runtime type of subword integral basic types is integer
1705 DEFINE_CALLMETHOD(jboolean, Boolean, T_BOOLEAN
1706 , HOTSPOT_JNI_CALLBOOLEANMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1707 HOTSPOT_JNI_CALLBOOLEANMETHOD_RETURN(_ret_ref))
1708 DEFINE_CALLMETHOD(jbyte, Byte, T_BYTE
1709 , HOTSPOT_JNI_CALLBYTEMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1710 HOTSPOT_JNI_CALLBYTEMETHOD_RETURN(_ret_ref))
1711 DEFINE_CALLMETHOD(jchar, Char, T_CHAR
1712 , HOTSPOT_JNI_CALLCHARMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1713 HOTSPOT_JNI_CALLCHARMETHOD_RETURN(_ret_ref))
1714 DEFINE_CALLMETHOD(jshort, Short, T_SHORT
1715 , HOTSPOT_JNI_CALLSHORTMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1716 HOTSPOT_JNI_CALLSHORTMETHOD_RETURN(_ret_ref))
1717
1718 DEFINE_CALLMETHOD(jobject, Object, T_OBJECT
1719 , HOTSPOT_JNI_CALLOBJECTMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1720 HOTSPOT_JNI_CALLOBJECTMETHOD_RETURN(_ret_ref))
1721 DEFINE_CALLMETHOD(jint, Int, T_INT,
1722 HOTSPOT_JNI_CALLINTMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1723 HOTSPOT_JNI_CALLINTMETHOD_RETURN(_ret_ref))
1724 DEFINE_CALLMETHOD(jlong, Long, T_LONG
1725 , HOTSPOT_JNI_CALLLONGMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1726 HOTSPOT_JNI_CALLLONGMETHOD_RETURN(_ret_ref))
1727 // Float and double probes don't return value because dtrace doesn't currently support it
1728 DEFINE_CALLMETHOD(jfloat, Float, T_FLOAT
1729 , HOTSPOT_JNI_CALLFLOATMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1730 HOTSPOT_JNI_CALLFLOATMETHOD_RETURN())
1731 DEFINE_CALLMETHOD(jdouble, Double, T_DOUBLE
1732 , HOTSPOT_JNI_CALLDOUBLEMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1733 HOTSPOT_JNI_CALLDOUBLEMETHOD_RETURN())
1734
1735 #define DEFINE_CALLMETHODV(ResultType, Result, Tag \
1736 , EntryProbe, ReturnProbe) \
1737 \
1738 DT_RETURN_MARK_DECL_FOR(Result, Call##Result##MethodV, ResultType \
1739 , ReturnProbe); \
1740 \
1741 JNI_ENTRY(ResultType, \
1742 jni_Call##Result##MethodV(JNIEnv *env, jobject obj, jmethodID methodID, va_list args)) \
1743 JNIWrapper("Call" XSTR(Result) "MethodV"); \
1744 \
1745 EntryProbe;\
1746 ResultType ret = 0;\
1747 DT_RETURN_MARK_FOR(Result, Call##Result##MethodV, ResultType, \
1748 (const ResultType&)ret);\
1749 \
1750 JavaValue jvalue(Tag); \
1751 JNI_ArgumentPusherVaArg ap(methodID, args); \
1752 jni_invoke_nonstatic(env, &jvalue, obj, JNI_VIRTUAL, methodID, &ap, CHECK_0); \
1753 ret = jvalue.get_##ResultType(); \
1754 return ret;\
1755 JNI_END
1756
1757 // the runtime type of subword integral basic types is integer
1758 DEFINE_CALLMETHODV(jboolean, Boolean, T_BOOLEAN
1759 , HOTSPOT_JNI_CALLBOOLEANMETHODV_ENTRY(env, obj, (uintptr_t)methodID),
1760 HOTSPOT_JNI_CALLBOOLEANMETHODV_RETURN(_ret_ref))
1761 DEFINE_CALLMETHODV(jbyte, Byte, T_BYTE
1762 , HOTSPOT_JNI_CALLBYTEMETHODV_ENTRY(env, obj, (uintptr_t)methodID),
1763 HOTSPOT_JNI_CALLBYTEMETHODV_RETURN(_ret_ref))
1764 DEFINE_CALLMETHODV(jchar, Char, T_CHAR
1765 , HOTSPOT_JNI_CALLCHARMETHODV_ENTRY(env, obj, (uintptr_t)methodID),
1766 HOTSPOT_JNI_CALLCHARMETHODV_RETURN(_ret_ref))
1767 DEFINE_CALLMETHODV(jshort, Short, T_SHORT
1768 , HOTSPOT_JNI_CALLSHORTMETHODV_ENTRY(env, obj, (uintptr_t)methodID),
1769 HOTSPOT_JNI_CALLSHORTMETHODV_RETURN(_ret_ref))
1770
1771 DEFINE_CALLMETHODV(jobject, Object, T_OBJECT
1772 , HOTSPOT_JNI_CALLOBJECTMETHODV_ENTRY(env, obj, (uintptr_t)methodID),
1773 HOTSPOT_JNI_CALLOBJECTMETHODV_RETURN(_ret_ref))
1774 DEFINE_CALLMETHODV(jint, Int, T_INT,
1775 HOTSPOT_JNI_CALLINTMETHODV_ENTRY(env, obj, (uintptr_t)methodID),
1776 HOTSPOT_JNI_CALLINTMETHODV_RETURN(_ret_ref))
1777 DEFINE_CALLMETHODV(jlong, Long, T_LONG
1778 , HOTSPOT_JNI_CALLLONGMETHODV_ENTRY(env, obj, (uintptr_t)methodID),
1779 HOTSPOT_JNI_CALLLONGMETHODV_RETURN(_ret_ref))
1780 // Float and double probes don't return value because dtrace doesn't currently support it
1781 DEFINE_CALLMETHODV(jfloat, Float, T_FLOAT
1782 , HOTSPOT_JNI_CALLFLOATMETHODV_ENTRY(env, obj, (uintptr_t)methodID),
1783 HOTSPOT_JNI_CALLFLOATMETHODV_RETURN())
1784 DEFINE_CALLMETHODV(jdouble, Double, T_DOUBLE
1785 , HOTSPOT_JNI_CALLDOUBLEMETHODV_ENTRY(env, obj, (uintptr_t)methodID),
1786 HOTSPOT_JNI_CALLDOUBLEMETHODV_RETURN())
1787
1788 #define DEFINE_CALLMETHODA(ResultType, Result, Tag \
1789 , EntryProbe, ReturnProbe) \
1790 \
1791 DT_RETURN_MARK_DECL_FOR(Result, Call##Result##MethodA, ResultType \
1792 , ReturnProbe); \
1793 \
1794 JNI_ENTRY(ResultType, \
1795 jni_Call##Result##MethodA(JNIEnv *env, jobject obj, jmethodID methodID, const jvalue *args)) \
1796 JNIWrapper("Call" XSTR(Result) "MethodA"); \
1797 EntryProbe; \
1798 ResultType ret = 0;\
1799 DT_RETURN_MARK_FOR(Result, Call##Result##MethodA, ResultType, \
1800 (const ResultType&)ret);\
1801 \
1802 JavaValue jvalue(Tag); \
1803 JNI_ArgumentPusherArray ap(methodID, args); \
1804 jni_invoke_nonstatic(env, &jvalue, obj, JNI_VIRTUAL, methodID, &ap, CHECK_0); \
1805 ret = jvalue.get_##ResultType(); \
1806 return ret;\
1807 JNI_END
1808
1809 // the runtime type of subword integral basic types is integer
1810 DEFINE_CALLMETHODA(jboolean, Boolean, T_BOOLEAN
1811 , HOTSPOT_JNI_CALLBOOLEANMETHODA_ENTRY(env, obj, (uintptr_t)methodID),
1812 HOTSPOT_JNI_CALLBOOLEANMETHODA_RETURN(_ret_ref))
1813 DEFINE_CALLMETHODA(jbyte, Byte, T_BYTE
1814 , HOTSPOT_JNI_CALLBYTEMETHODA_ENTRY(env, obj, (uintptr_t)methodID),
1815 HOTSPOT_JNI_CALLBYTEMETHODA_RETURN(_ret_ref))
1816 DEFINE_CALLMETHODA(jchar, Char, T_CHAR
1817 , HOTSPOT_JNI_CALLCHARMETHODA_ENTRY(env, obj, (uintptr_t)methodID),
1818 HOTSPOT_JNI_CALLCHARMETHODA_RETURN(_ret_ref))
1819 DEFINE_CALLMETHODA(jshort, Short, T_SHORT
1820 , HOTSPOT_JNI_CALLSHORTMETHODA_ENTRY(env, obj, (uintptr_t)methodID),
1821 HOTSPOT_JNI_CALLSHORTMETHODA_RETURN(_ret_ref))
1822
1823 DEFINE_CALLMETHODA(jobject, Object, T_OBJECT
1824 , HOTSPOT_JNI_CALLOBJECTMETHODA_ENTRY(env, obj, (uintptr_t)methodID),
1825 HOTSPOT_JNI_CALLOBJECTMETHODA_RETURN(_ret_ref))
1826 DEFINE_CALLMETHODA(jint, Int, T_INT,
1827 HOTSPOT_JNI_CALLINTMETHODA_ENTRY(env, obj, (uintptr_t)methodID),
1828 HOTSPOT_JNI_CALLINTMETHODA_RETURN(_ret_ref))
1829 DEFINE_CALLMETHODA(jlong, Long, T_LONG
1830 , HOTSPOT_JNI_CALLLONGMETHODA_ENTRY(env, obj, (uintptr_t)methodID),
1831 HOTSPOT_JNI_CALLLONGMETHODA_RETURN(_ret_ref))
1832 // Float and double probes don't return value because dtrace doesn't currently support it
1833 DEFINE_CALLMETHODA(jfloat, Float, T_FLOAT
1834 , HOTSPOT_JNI_CALLFLOATMETHODA_ENTRY(env, obj, (uintptr_t)methodID),
1835 HOTSPOT_JNI_CALLFLOATMETHODA_RETURN())
1836 DEFINE_CALLMETHODA(jdouble, Double, T_DOUBLE
1837 , HOTSPOT_JNI_CALLDOUBLEMETHODA_ENTRY(env, obj, (uintptr_t)methodID),
1838 HOTSPOT_JNI_CALLDOUBLEMETHODA_RETURN())
1839
1840 DT_VOID_RETURN_MARK_DECL(CallVoidMethod, HOTSPOT_JNI_CALLVOIDMETHOD_RETURN());
1841 DT_VOID_RETURN_MARK_DECL(CallVoidMethodV, HOTSPOT_JNI_CALLVOIDMETHODV_RETURN());
1842 DT_VOID_RETURN_MARK_DECL(CallVoidMethodA, HOTSPOT_JNI_CALLVOIDMETHODA_RETURN());
1843
1844 #endif /* USDT2 */
1845
1846 JNI_ENTRY(void, jni_CallVoidMethod(JNIEnv *env, jobject obj, jmethodID methodID, ...))
1847 JNIWrapper("CallVoidMethod");
1848 #ifndef USDT2
1849 DTRACE_PROBE3(hotspot_jni, CallVoidMethod__entry, env, obj, methodID);
1850 #else /* USDT2 */
1851 HOTSPOT_JNI_CALLVOIDMETHOD_ENTRY(env, obj, (uintptr_t) methodID);
1852 #endif /* USDT2 */
1853 DT_VOID_RETURN_MARK(CallVoidMethod);
1854
1855 va_list args;
1856 va_start(args, methodID);
1857 JavaValue jvalue(T_VOID);
1858 JNI_ArgumentPusherVaArg ap(methodID, args);
1859 jni_invoke_nonstatic(env, &jvalue, obj, JNI_VIRTUAL, methodID, &ap, CHECK);
1860 va_end(args);
1861 JNI_END
1862
1863
1864 JNI_ENTRY(void, jni_CallVoidMethodV(JNIEnv *env, jobject obj, jmethodID methodID, va_list args))
1865 JNIWrapper("CallVoidMethodV");
1866 #ifndef USDT2
1867 DTRACE_PROBE3(hotspot_jni, CallVoidMethodV__entry, env, obj, methodID);
1868 #else /* USDT2 */
1869 HOTSPOT_JNI_CALLVOIDMETHODV_ENTRY(env, obj, (uintptr_t) methodID);
1870 #endif /* USDT2 */
1871 DT_VOID_RETURN_MARK(CallVoidMethodV);
1872
1873 JavaValue jvalue(T_VOID);
1874 JNI_ArgumentPusherVaArg ap(methodID, args);
1875 jni_invoke_nonstatic(env, &jvalue, obj, JNI_VIRTUAL, methodID, &ap, CHECK);
1876 JNI_END
1877
1878
1879 JNI_ENTRY(void, jni_CallVoidMethodA(JNIEnv *env, jobject obj, jmethodID methodID, const jvalue *args))
1880 JNIWrapper("CallVoidMethodA");
1881 #ifndef USDT2
1882 DTRACE_PROBE3(hotspot_jni, CallVoidMethodA__entry, env, obj, methodID);
1883 #else /* USDT2 */
1884 HOTSPOT_JNI_CALLVOIDMETHODA_ENTRY(env, obj, (uintptr_t) methodID);
1885 #endif /* USDT2 */
1886 DT_VOID_RETURN_MARK(CallVoidMethodA);
1887
1888 JavaValue jvalue(T_VOID);
1889 JNI_ArgumentPusherArray ap(methodID, args);
1890 jni_invoke_nonstatic(env, &jvalue, obj, JNI_VIRTUAL, methodID, &ap, CHECK);
1891 JNI_END
1892
1893
1894 #ifndef USDT2
1895 #define DEFINE_CALLNONVIRTUALMETHOD(ResultType, Result, Tag) \
1896 \
1897 DT_RETURN_MARK_DECL_FOR(Result, CallNonvirtual##Result##Method, ResultType);\
1898 DT_RETURN_MARK_DECL_FOR(Result, CallNonvirtual##Result##MethodV, ResultType);\
1899 DT_RETURN_MARK_DECL_FOR(Result, CallNonvirtual##Result##MethodA, ResultType);\
1900 \
1901 JNI_ENTRY(ResultType, \
1902 jni_CallNonvirtual##Result##Method(JNIEnv *env, jobject obj, jclass cls, jmethodID methodID, ...)) \
1903 JNIWrapper("CallNonvitual" XSTR(Result) "Method"); \
1904 \
1905 DTRACE_PROBE4(hotspot_jni, CallNonvirtual##Result##Method__entry, env, obj, cls, methodID);\
1906 ResultType ret;\
1907 DT_RETURN_MARK_FOR(Result, CallNonvirtual##Result##Method, ResultType, \
1908 (const ResultType&)ret);\
1909 \
1910 va_list args; \
1911 va_start(args, methodID); \
1912 JavaValue jvalue(Tag); \
1913 JNI_ArgumentPusherVaArg ap(methodID, args); \
1914 jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK_0); \
1915 va_end(args); \
1916 ret = jvalue.get_##ResultType(); \
1917 return ret;\
1918 JNI_END \
1919 \
1920 JNI_ENTRY(ResultType, \
1921 jni_CallNonvirtual##Result##MethodV(JNIEnv *env, jobject obj, jclass cls, jmethodID methodID, va_list args)) \
1922 JNIWrapper("CallNonvitual" XSTR(Result) "#MethodV"); \
1923 DTRACE_PROBE4(hotspot_jni, CallNonvirtual##Result##MethodV__entry, env, obj, cls, methodID);\
1924 ResultType ret;\
1925 DT_RETURN_MARK_FOR(Result, CallNonvirtual##Result##MethodV, ResultType, \
1926 (const ResultType&)ret);\
1927 \
1928 JavaValue jvalue(Tag); \
1929 JNI_ArgumentPusherVaArg ap(methodID, args); \
1930 jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK_0); \
1931 ret = jvalue.get_##ResultType(); \
1932 return ret;\
1933 JNI_END \
1934 \
1935 JNI_ENTRY(ResultType, \
1936 jni_CallNonvirtual##Result##MethodA(JNIEnv *env, jobject obj, jclass cls, jmethodID methodID, const jvalue *args)) \
1937 JNIWrapper("CallNonvitual" XSTR(Result) "MethodA"); \
1938 DTRACE_PROBE4(hotspot_jni, CallNonvirtual##Result##MethodA__entry, env, obj, cls, methodID);\
1939 ResultType ret;\
1940 DT_RETURN_MARK_FOR(Result, CallNonvirtual##Result##MethodA, ResultType, \
1941 (const ResultType&)ret);\
1942 \
1943 JavaValue jvalue(Tag); \
1944 JNI_ArgumentPusherArray ap(methodID, args); \
1945 jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK_0); \
1946 ret = jvalue.get_##ResultType(); \
1947 return ret;\
1948 JNI_END
1949
1950 // the runtime type of subword integral basic types is integer
1951 DEFINE_CALLNONVIRTUALMETHOD(jboolean, Boolean, T_BOOLEAN)
1952 DEFINE_CALLNONVIRTUALMETHOD(jbyte, Byte, T_BYTE)
1953 DEFINE_CALLNONVIRTUALMETHOD(jchar, Char, T_CHAR)
1954 DEFINE_CALLNONVIRTUALMETHOD(jshort, Short, T_SHORT)
1955
1956 DEFINE_CALLNONVIRTUALMETHOD(jobject, Object, T_OBJECT)
1957 DEFINE_CALLNONVIRTUALMETHOD(jint, Int, T_INT)
1958 DEFINE_CALLNONVIRTUALMETHOD(jlong, Long, T_LONG)
1959 DEFINE_CALLNONVIRTUALMETHOD(jfloat, Float, T_FLOAT)
1960 DEFINE_CALLNONVIRTUALMETHOD(jdouble, Double, T_DOUBLE)
1961
1962
1963 DT_VOID_RETURN_MARK_DECL(CallNonvirtualVoidMethod);
1964 DT_VOID_RETURN_MARK_DECL(CallNonvirtualVoidMethodV);
1965 DT_VOID_RETURN_MARK_DECL(CallNonvirtualVoidMethodA);
1966
1967 #else /* USDT2 */
1968
1969 #define DEFINE_CALLNONVIRTUALMETHOD(ResultType, Result, Tag \
1970 , EntryProbe, ReturnProbe) \
1971 \
1972 DT_RETURN_MARK_DECL_FOR(Result, CallNonvirtual##Result##Method, ResultType \
1973 , ReturnProbe);\
1974 \
1975 JNI_ENTRY(ResultType, \
1976 jni_CallNonvirtual##Result##Method(JNIEnv *env, jobject obj, jclass cls, jmethodID methodID, ...)) \
1977 JNIWrapper("CallNonvitual" XSTR(Result) "Method"); \
1978 \
1979 EntryProbe;\
1980 ResultType ret;\
1981 DT_RETURN_MARK_FOR(Result, CallNonvirtual##Result##Method, ResultType, \
1982 (const ResultType&)ret);\
1983 \
1984 va_list args; \
1985 va_start(args, methodID); \
1986 JavaValue jvalue(Tag); \
1987 JNI_ArgumentPusherVaArg ap(methodID, args); \
1988 jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK_0); \
1989 va_end(args); \
1990 ret = jvalue.get_##ResultType(); \
1991 return ret;\
1992 JNI_END
1993
1994 // the runtime type of subword integral basic types is integer
1995 DEFINE_CALLNONVIRTUALMETHOD(jboolean, Boolean, T_BOOLEAN
1996 , HOTSPOT_JNI_CALLNONVIRTUALBOOLEANMETHOD_ENTRY(env, obj, cls, (uintptr_t)methodID),
1997 HOTSPOT_JNI_CALLNONVIRTUALBOOLEANMETHOD_RETURN(_ret_ref))
1998 DEFINE_CALLNONVIRTUALMETHOD(jbyte, Byte, T_BYTE
1999 , HOTSPOT_JNI_CALLNONVIRTUALBYTEMETHOD_ENTRY(env, obj, cls, (uintptr_t)methodID),
2000 HOTSPOT_JNI_CALLNONVIRTUALBYTEMETHOD_RETURN(_ret_ref))
2001 DEFINE_CALLNONVIRTUALMETHOD(jchar, Char, T_CHAR
2002 , HOTSPOT_JNI_CALLNONVIRTUALCHARMETHOD_ENTRY(env, obj, cls, (uintptr_t)methodID),
2003 HOTSPOT_JNI_CALLNONVIRTUALCHARMETHOD_RETURN(_ret_ref))
2004 DEFINE_CALLNONVIRTUALMETHOD(jshort, Short, T_SHORT
2005 , HOTSPOT_JNI_CALLNONVIRTUALSHORTMETHOD_ENTRY(env, obj, cls, (uintptr_t)methodID),
2006 HOTSPOT_JNI_CALLNONVIRTUALSHORTMETHOD_RETURN(_ret_ref))
2007
2008 DEFINE_CALLNONVIRTUALMETHOD(jobject, Object, T_OBJECT
2009 , HOTSPOT_JNI_CALLNONVIRTUALOBJECTMETHOD_ENTRY(env, obj, cls, (uintptr_t)methodID),
2010 HOTSPOT_JNI_CALLNONVIRTUALOBJECTMETHOD_RETURN(_ret_ref))
2011 DEFINE_CALLNONVIRTUALMETHOD(jint, Int, T_INT
2012 , HOTSPOT_JNI_CALLNONVIRTUALINTMETHOD_ENTRY(env, obj, cls, (uintptr_t)methodID),
2013 HOTSPOT_JNI_CALLNONVIRTUALINTMETHOD_RETURN(_ret_ref))
2014 DEFINE_CALLNONVIRTUALMETHOD(jlong, Long, T_LONG
2015 , HOTSPOT_JNI_CALLNONVIRTUALLONGMETHOD_ENTRY(env, obj, cls, (uintptr_t)methodID),
2016 // Float and double probes don't return value because dtrace doesn't currently support it
2017 HOTSPOT_JNI_CALLNONVIRTUALLONGMETHOD_RETURN(_ret_ref))
2018 DEFINE_CALLNONVIRTUALMETHOD(jfloat, Float, T_FLOAT
2019 , HOTSPOT_JNI_CALLNONVIRTUALFLOATMETHOD_ENTRY(env, obj, cls, (uintptr_t)methodID),
2020 HOTSPOT_JNI_CALLNONVIRTUALFLOATMETHOD_RETURN())
2021 DEFINE_CALLNONVIRTUALMETHOD(jdouble, Double, T_DOUBLE
2022 , HOTSPOT_JNI_CALLNONVIRTUALDOUBLEMETHOD_ENTRY(env, obj, cls, (uintptr_t)methodID),
2023 HOTSPOT_JNI_CALLNONVIRTUALDOUBLEMETHOD_RETURN())
2024
2025 #define DEFINE_CALLNONVIRTUALMETHODV(ResultType, Result, Tag \
2026 , EntryProbe, ReturnProbe) \
2027 \
2028 DT_RETURN_MARK_DECL_FOR(Result, CallNonvirtual##Result##MethodV, ResultType \
2029 , ReturnProbe);\
2030 \
2031 JNI_ENTRY(ResultType, \
2032 jni_CallNonvirtual##Result##MethodV(JNIEnv *env, jobject obj, jclass cls, jmethodID methodID, va_list args)) \
2033 JNIWrapper("CallNonvitual" XSTR(Result) "MethodV"); \
2034 \
2035 EntryProbe;\
2036 ResultType ret;\
2037 DT_RETURN_MARK_FOR(Result, CallNonvirtual##Result##MethodV, ResultType, \
2038 (const ResultType&)ret);\
2039 \
2040 JavaValue jvalue(Tag); \
2041 JNI_ArgumentPusherVaArg ap(methodID, args); \
2042 jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK_0); \
2043 ret = jvalue.get_##ResultType(); \
2044 return ret;\
2045 JNI_END
2046
2047 // the runtime type of subword integral basic types is integer
2048 DEFINE_CALLNONVIRTUALMETHODV(jboolean, Boolean, T_BOOLEAN
2049 , HOTSPOT_JNI_CALLNONVIRTUALBOOLEANMETHODV_ENTRY(env, obj, cls, (uintptr_t)methodID),
2050 HOTSPOT_JNI_CALLNONVIRTUALBOOLEANMETHODV_RETURN(_ret_ref))
2051 DEFINE_CALLNONVIRTUALMETHODV(jbyte, Byte, T_BYTE
2052 , HOTSPOT_JNI_CALLNONVIRTUALBYTEMETHODV_ENTRY(env, obj, cls, (uintptr_t)methodID),
2053 HOTSPOT_JNI_CALLNONVIRTUALBYTEMETHODV_RETURN(_ret_ref))
2054 DEFINE_CALLNONVIRTUALMETHODV(jchar, Char, T_CHAR
2055 , HOTSPOT_JNI_CALLNONVIRTUALCHARMETHODV_ENTRY(env, obj, cls, (uintptr_t)methodID),
2056 HOTSPOT_JNI_CALLNONVIRTUALCHARMETHODV_RETURN(_ret_ref))
2057 DEFINE_CALLNONVIRTUALMETHODV(jshort, Short, T_SHORT
2058 , HOTSPOT_JNI_CALLNONVIRTUALSHORTMETHODV_ENTRY(env, obj, cls, (uintptr_t)methodID),
2059 HOTSPOT_JNI_CALLNONVIRTUALSHORTMETHODV_RETURN(_ret_ref))
2060
2061 DEFINE_CALLNONVIRTUALMETHODV(jobject, Object, T_OBJECT
2062 , HOTSPOT_JNI_CALLNONVIRTUALOBJECTMETHODV_ENTRY(env, obj, cls, (uintptr_t)methodID),
2063 HOTSPOT_JNI_CALLNONVIRTUALOBJECTMETHODV_RETURN(_ret_ref))
2064 DEFINE_CALLNONVIRTUALMETHODV(jint, Int, T_INT
2065 , HOTSPOT_JNI_CALLNONVIRTUALINTMETHODV_ENTRY(env, obj, cls, (uintptr_t)methodID),
2066 HOTSPOT_JNI_CALLNONVIRTUALINTMETHODV_RETURN(_ret_ref))
2067 DEFINE_CALLNONVIRTUALMETHODV(jlong, Long, T_LONG
2068 , HOTSPOT_JNI_CALLNONVIRTUALLONGMETHODV_ENTRY(env, obj, cls, (uintptr_t)methodID),
2069 // Float and double probes don't return value because dtrace doesn't currently support it
2070 HOTSPOT_JNI_CALLNONVIRTUALLONGMETHODV_RETURN(_ret_ref))
2071 DEFINE_CALLNONVIRTUALMETHODV(jfloat, Float, T_FLOAT
2072 , HOTSPOT_JNI_CALLNONVIRTUALFLOATMETHODV_ENTRY(env, obj, cls, (uintptr_t)methodID),
2073 HOTSPOT_JNI_CALLNONVIRTUALFLOATMETHODV_RETURN())
2074 DEFINE_CALLNONVIRTUALMETHODV(jdouble, Double, T_DOUBLE
2075 , HOTSPOT_JNI_CALLNONVIRTUALDOUBLEMETHODV_ENTRY(env, obj, cls, (uintptr_t)methodID),
2076 HOTSPOT_JNI_CALLNONVIRTUALDOUBLEMETHODV_RETURN())
2077
2078 #define DEFINE_CALLNONVIRTUALMETHODA(ResultType, Result, Tag \
2079 , EntryProbe, ReturnProbe) \
2080 \
2081 DT_RETURN_MARK_DECL_FOR(Result, CallNonvirtual##Result##MethodA, ResultType \
2082 , ReturnProbe);\
2083 \
2084 JNI_ENTRY(ResultType, \
2085 jni_CallNonvirtual##Result##MethodA(JNIEnv *env, jobject obj, jclass cls, jmethodID methodID, const jvalue *args)) \
2086 JNIWrapper("CallNonvitual" XSTR(Result) "MethodA"); \
2087 \
2088 EntryProbe;\
2089 ResultType ret;\
2090 DT_RETURN_MARK_FOR(Result, CallNonvirtual##Result##MethodA, ResultType, \
2091 (const ResultType&)ret);\
2092 \
2093 JavaValue jvalue(Tag); \
2094 JNI_ArgumentPusherArray ap(methodID, args); \
2095 jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK_0); \
2096 ret = jvalue.get_##ResultType(); \
2097 return ret;\
2098 JNI_END
2099
2100 // the runtime type of subword integral basic types is integer
2101 DEFINE_CALLNONVIRTUALMETHODA(jboolean, Boolean, T_BOOLEAN
2102 , HOTSPOT_JNI_CALLNONVIRTUALBOOLEANMETHODA_ENTRY(env, obj, cls, (uintptr_t)methodID),
2103 HOTSPOT_JNI_CALLNONVIRTUALBOOLEANMETHODA_RETURN(_ret_ref))
2104 DEFINE_CALLNONVIRTUALMETHODA(jbyte, Byte, T_BYTE
2105 , HOTSPOT_JNI_CALLNONVIRTUALBYTEMETHODA_ENTRY(env, obj, cls, (uintptr_t)methodID),
2106 HOTSPOT_JNI_CALLNONVIRTUALBYTEMETHODA_RETURN(_ret_ref))
2107 DEFINE_CALLNONVIRTUALMETHODA(jchar, Char, T_CHAR
2108 , HOTSPOT_JNI_CALLNONVIRTUALCHARMETHODA_ENTRY(env, obj, cls, (uintptr_t)methodID),
2109 HOTSPOT_JNI_CALLNONVIRTUALCHARMETHODA_RETURN(_ret_ref))
2110 DEFINE_CALLNONVIRTUALMETHODA(jshort, Short, T_SHORT
2111 , HOTSPOT_JNI_CALLNONVIRTUALSHORTMETHODA_ENTRY(env, obj, cls, (uintptr_t)methodID),
2112 HOTSPOT_JNI_CALLNONVIRTUALSHORTMETHODA_RETURN(_ret_ref))
2113
2114 DEFINE_CALLNONVIRTUALMETHODA(jobject, Object, T_OBJECT
2115 , HOTSPOT_JNI_CALLNONVIRTUALOBJECTMETHODA_ENTRY(env, obj, cls, (uintptr_t)methodID),
2116 HOTSPOT_JNI_CALLNONVIRTUALOBJECTMETHODA_RETURN(_ret_ref))
2117 DEFINE_CALLNONVIRTUALMETHODA(jint, Int, T_INT
2118 , HOTSPOT_JNI_CALLNONVIRTUALINTMETHODA_ENTRY(env, obj, cls, (uintptr_t)methodID),
2119 HOTSPOT_JNI_CALLNONVIRTUALINTMETHODA_RETURN(_ret_ref))
2120 DEFINE_CALLNONVIRTUALMETHODA(jlong, Long, T_LONG
2121 , HOTSPOT_JNI_CALLNONVIRTUALLONGMETHODA_ENTRY(env, obj, cls, (uintptr_t)methodID),
2122 // Float and double probes don't return value because dtrace doesn't currently support it
2123 HOTSPOT_JNI_CALLNONVIRTUALLONGMETHODA_RETURN(_ret_ref))
2124 DEFINE_CALLNONVIRTUALMETHODA(jfloat, Float, T_FLOAT
2125 , HOTSPOT_JNI_CALLNONVIRTUALFLOATMETHODA_ENTRY(env, obj, cls, (uintptr_t)methodID),
2126 HOTSPOT_JNI_CALLNONVIRTUALFLOATMETHODA_RETURN())
2127 DEFINE_CALLNONVIRTUALMETHODA(jdouble, Double, T_DOUBLE
2128 , HOTSPOT_JNI_CALLNONVIRTUALDOUBLEMETHODA_ENTRY(env, obj, cls, (uintptr_t)methodID),
2129 HOTSPOT_JNI_CALLNONVIRTUALDOUBLEMETHODA_RETURN())
2130
2131 DT_VOID_RETURN_MARK_DECL(CallNonvirtualVoidMethod
2132 , HOTSPOT_JNI_CALLNONVIRTUALVOIDMETHOD_RETURN());
2133 DT_VOID_RETURN_MARK_DECL(CallNonvirtualVoidMethodV
2134 , HOTSPOT_JNI_CALLNONVIRTUALVOIDMETHODV_RETURN());
2135 DT_VOID_RETURN_MARK_DECL(CallNonvirtualVoidMethodA
2136 , HOTSPOT_JNI_CALLNONVIRTUALVOIDMETHODA_RETURN());
2137 #endif /* USDT2 */
2138
2139 JNI_ENTRY(void, jni_CallNonvirtualVoidMethod(JNIEnv *env, jobject obj, jclass cls, jmethodID methodID, ...))
2140 JNIWrapper("CallNonvirtualVoidMethod");
2141
2142 #ifndef USDT2
2143 DTRACE_PROBE4(hotspot_jni, CallNonvirtualVoidMethod__entry,
2144 env, obj, cls, methodID);
2145 #else /* USDT2 */
2146 HOTSPOT_JNI_CALLNONVIRTUALVOIDMETHOD_ENTRY(env, obj, cls, (uintptr_t) methodID);
2147 #endif /* USDT2 */
2148 DT_VOID_RETURN_MARK(CallNonvirtualVoidMethod);
2149
2150 va_list args;
2151 va_start(args, methodID);
2152 JavaValue jvalue(T_VOID);
2153 JNI_ArgumentPusherVaArg ap(methodID, args);
2154 jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK);
2155 va_end(args);
2156 JNI_END
2157
2158
2159 JNI_ENTRY(void, jni_CallNonvirtualVoidMethodV(JNIEnv *env, jobject obj, jclass cls, jmethodID methodID, va_list args))
2160 JNIWrapper("CallNonvirtualVoidMethodV");
2161
2162 #ifndef USDT2
2163 DTRACE_PROBE4(hotspot_jni, CallNonvirtualVoidMethodV__entry,
2164 env, obj, cls, methodID);
2165 #else /* USDT2 */
2166 HOTSPOT_JNI_CALLNONVIRTUALVOIDMETHODV_ENTRY(
2167 env, obj, cls, (uintptr_t) methodID);
2168 #endif /* USDT2 */
2169 DT_VOID_RETURN_MARK(CallNonvirtualVoidMethodV);
2170
2171 JavaValue jvalue(T_VOID);
2172 JNI_ArgumentPusherVaArg ap(methodID, args);
2173 jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK);
2174 JNI_END
2175
2176
2177 JNI_ENTRY(void, jni_CallNonvirtualVoidMethodA(JNIEnv *env, jobject obj, jclass cls, jmethodID methodID, const jvalue *args))
2178 JNIWrapper("CallNonvirtualVoidMethodA");
2179 #ifndef USDT2
2180 DTRACE_PROBE4(hotspot_jni, CallNonvirtualVoidMethodA__entry,
2181 env, obj, cls, methodID);
2182 #else /* USDT2 */
2183 HOTSPOT_JNI_CALLNONVIRTUALVOIDMETHODA_ENTRY(
2184 env, obj, cls, (uintptr_t) methodID);
2185 #endif /* USDT2 */
2186 DT_VOID_RETURN_MARK(CallNonvirtualVoidMethodA);
2187 JavaValue jvalue(T_VOID);
2188 JNI_ArgumentPusherArray ap(methodID, args);
2189 jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK);
2190 JNI_END
2191
2192
2193 #ifndef USDT2
2194 #define DEFINE_CALLSTATICMETHOD(ResultType, Result, Tag) \
2195 \
2196 DT_RETURN_MARK_DECL_FOR(Result, CallStatic##Result##Method, ResultType);\
2197 DT_RETURN_MARK_DECL_FOR(Result, CallStatic##Result##MethodV, ResultType);\
2198 DT_RETURN_MARK_DECL_FOR(Result, CallStatic##Result##MethodA, ResultType);\
2199 \
2200 JNI_ENTRY(ResultType, \
2201 jni_CallStatic##Result##Method(JNIEnv *env, jclass cls, jmethodID methodID, ...)) \
2202 JNIWrapper("CallStatic" XSTR(Result) "Method"); \
2203 \
2204 DTRACE_PROBE3(hotspot_jni, CallStatic##Result##Method__entry, env, cls, methodID);\
2205 ResultType ret = 0;\
2206 DT_RETURN_MARK_FOR(Result, CallStatic##Result##Method, ResultType, \
2207 (const ResultType&)ret);\
2208 \
2209 va_list args; \
2210 va_start(args, methodID); \
2211 JavaValue jvalue(Tag); \
2212 JNI_ArgumentPusherVaArg ap(methodID, args); \
2213 jni_invoke_static(env, &jvalue, NULL, JNI_STATIC, methodID, &ap, CHECK_0); \
2214 va_end(args); \
2215 ret = jvalue.get_##ResultType(); \
2216 return ret;\
2217 JNI_END \
2218 \
2219 JNI_ENTRY(ResultType, \
2220 jni_CallStatic##Result##MethodV(JNIEnv *env, jclass cls, jmethodID methodID, va_list args)) \
2221 JNIWrapper("CallStatic" XSTR(Result) "MethodV"); \
2222 DTRACE_PROBE3(hotspot_jni, CallStatic##Result##MethodV__entry, env, cls, methodID);\
2223 ResultType ret = 0;\
2224 DT_RETURN_MARK_FOR(Result, CallStatic##Result##MethodV, ResultType, \
2225 (const ResultType&)ret);\
2226 \
2227 JavaValue jvalue(Tag); \
2228 JNI_ArgumentPusherVaArg ap(methodID, args); \
2229 jni_invoke_static(env, &jvalue, NULL, JNI_STATIC, methodID, &ap, CHECK_0); \
2230 ret = jvalue.get_##ResultType(); \
2231 return ret;\
2232 JNI_END \
2233 \
2234 JNI_ENTRY(ResultType, \
2235 jni_CallStatic##Result##MethodA(JNIEnv *env, jclass cls, jmethodID methodID, const jvalue *args)) \
2236 JNIWrapper("CallStatic" XSTR(Result) "MethodA"); \
2237 DTRACE_PROBE3(hotspot_jni, CallStatic##Result##MethodA__entry, env, cls, methodID);\
2238 ResultType ret = 0;\
2239 DT_RETURN_MARK_FOR(Result, CallStatic##Result##MethodA, ResultType, \
2240 (const ResultType&)ret);\
2241 \
2242 JavaValue jvalue(Tag); \
2243 JNI_ArgumentPusherArray ap(methodID, args); \
2244 jni_invoke_static(env, &jvalue, NULL, JNI_STATIC, methodID, &ap, CHECK_0); \
2245 ret = jvalue.get_##ResultType(); \
2246 return ret;\
2247 JNI_END
2248
2249 // the runtime type of subword integral basic types is integer
2250 DEFINE_CALLSTATICMETHOD(jboolean, Boolean, T_BOOLEAN)
2251 DEFINE_CALLSTATICMETHOD(jbyte, Byte, T_BYTE)
2252 DEFINE_CALLSTATICMETHOD(jchar, Char, T_CHAR)
2253 DEFINE_CALLSTATICMETHOD(jshort, Short, T_SHORT)
2254
2255 DEFINE_CALLSTATICMETHOD(jobject, Object, T_OBJECT)
2256 DEFINE_CALLSTATICMETHOD(jint, Int, T_INT)
2257 DEFINE_CALLSTATICMETHOD(jlong, Long, T_LONG)
2258 DEFINE_CALLSTATICMETHOD(jfloat, Float, T_FLOAT)
2259 DEFINE_CALLSTATICMETHOD(jdouble, Double, T_DOUBLE)
2260
2261
2262 DT_VOID_RETURN_MARK_DECL(CallStaticVoidMethod);
2263 DT_VOID_RETURN_MARK_DECL(CallStaticVoidMethodV);
2264 DT_VOID_RETURN_MARK_DECL(CallStaticVoidMethodA);
2265
2266 #else /* USDT2 */
2267
2268 #define DEFINE_CALLSTATICMETHOD(ResultType, Result, Tag \
2269 , EntryProbe, ResultProbe) \
2270 \
2271 DT_RETURN_MARK_DECL_FOR(Result, CallStatic##Result##Method, ResultType \
2272 , ResultProbe); \
2273 \
2274 JNI_ENTRY(ResultType, \
2275 jni_CallStatic##Result##Method(JNIEnv *env, jclass cls, jmethodID methodID, ...)) \
2276 JNIWrapper("CallStatic" XSTR(Result) "Method"); \
2277 \
2278 EntryProbe; \
2279 ResultType ret = 0;\
2280 DT_RETURN_MARK_FOR(Result, CallStatic##Result##Method, ResultType, \
2281 (const ResultType&)ret);\
2282 \
2283 va_list args; \
2284 va_start(args, methodID); \
2285 JavaValue jvalue(Tag); \
2286 JNI_ArgumentPusherVaArg ap(methodID, args); \
2287 jni_invoke_static(env, &jvalue, NULL, JNI_STATIC, methodID, &ap, CHECK_0); \
2288 va_end(args); \
2289 ret = jvalue.get_##ResultType(); \
2290 return ret;\
2291 JNI_END
2292
2293 // the runtime type of subword integral basic types is integer
2294 DEFINE_CALLSTATICMETHOD(jboolean, Boolean, T_BOOLEAN
2295 , HOTSPOT_JNI_CALLSTATICBOOLEANMETHOD_ENTRY(env, cls, (uintptr_t)methodID),
2296 HOTSPOT_JNI_CALLSTATICBOOLEANMETHOD_RETURN(_ret_ref));
2297 DEFINE_CALLSTATICMETHOD(jbyte, Byte, T_BYTE
2298 , HOTSPOT_JNI_CALLSTATICBYTEMETHOD_ENTRY(env, cls, (uintptr_t)methodID),
2299 HOTSPOT_JNI_CALLSTATICBYTEMETHOD_RETURN(_ret_ref));
2300 DEFINE_CALLSTATICMETHOD(jchar, Char, T_CHAR
2301 , HOTSPOT_JNI_CALLSTATICCHARMETHOD_ENTRY(env, cls, (uintptr_t)methodID),
2302 HOTSPOT_JNI_CALLSTATICCHARMETHOD_RETURN(_ret_ref));
2303 DEFINE_CALLSTATICMETHOD(jshort, Short, T_SHORT
2304 , HOTSPOT_JNI_CALLSTATICSHORTMETHOD_ENTRY(env, cls, (uintptr_t)methodID),
2305 HOTSPOT_JNI_CALLSTATICSHORTMETHOD_RETURN(_ret_ref));
2306
2307 DEFINE_CALLSTATICMETHOD(jobject, Object, T_OBJECT
2308 , HOTSPOT_JNI_CALLSTATICOBJECTMETHOD_ENTRY(env, cls, (uintptr_t)methodID),
2309 HOTSPOT_JNI_CALLSTATICOBJECTMETHOD_RETURN(_ret_ref));
2310 DEFINE_CALLSTATICMETHOD(jint, Int, T_INT
2311 , HOTSPOT_JNI_CALLSTATICINTMETHOD_ENTRY(env, cls, (uintptr_t)methodID),
2312 HOTSPOT_JNI_CALLSTATICINTMETHOD_RETURN(_ret_ref));
2313 DEFINE_CALLSTATICMETHOD(jlong, Long, T_LONG
2314 , HOTSPOT_JNI_CALLSTATICLONGMETHOD_ENTRY(env, cls, (uintptr_t)methodID),
2315 HOTSPOT_JNI_CALLSTATICLONGMETHOD_RETURN(_ret_ref));
2316 // Float and double probes don't return value because dtrace doesn't currently support it
2317 DEFINE_CALLSTATICMETHOD(jfloat, Float, T_FLOAT
2318 , HOTSPOT_JNI_CALLSTATICFLOATMETHOD_ENTRY(env, cls, (uintptr_t)methodID),
2319 HOTSPOT_JNI_CALLSTATICFLOATMETHOD_RETURN());
2320 DEFINE_CALLSTATICMETHOD(jdouble, Double, T_DOUBLE
2321 , HOTSPOT_JNI_CALLSTATICDOUBLEMETHOD_ENTRY(env, cls, (uintptr_t)methodID),
2322 HOTSPOT_JNI_CALLSTATICDOUBLEMETHOD_RETURN());
2323
2324 #define DEFINE_CALLSTATICMETHODV(ResultType, Result, Tag \
2325 , EntryProbe, ResultProbe) \
2326 \
2327 DT_RETURN_MARK_DECL_FOR(Result, CallStatic##Result##MethodV, ResultType \
2328 , ResultProbe); \
2329 \
2330 JNI_ENTRY(ResultType, \
2331 jni_CallStatic##Result##MethodV(JNIEnv *env, jclass cls, jmethodID methodID, va_list args)) \
2332 JNIWrapper("CallStatic" XSTR(Result) "MethodV"); \
2333 \
2334 EntryProbe; \
2335 ResultType ret = 0;\
2336 DT_RETURN_MARK_FOR(Result, CallStatic##Result##MethodV, ResultType, \
2337 (const ResultType&)ret);\
2338 \
2339 JavaValue jvalue(Tag); \
2340 JNI_ArgumentPusherVaArg ap(methodID, args); \
2341 /* Make sure class is initialized before trying to invoke its method */ \
2342 KlassHandle k(THREAD, java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls))); \
2343 k()->initialize(CHECK_0); \
2344 jni_invoke_static(env, &jvalue, NULL, JNI_STATIC, methodID, &ap, CHECK_0); \
2345 va_end(args); \
2346 ret = jvalue.get_##ResultType(); \
2347 return ret;\
2348 JNI_END
2349
2350 // the runtime type of subword integral basic types is integer
2351 DEFINE_CALLSTATICMETHODV(jboolean, Boolean, T_BOOLEAN
2352 , HOTSPOT_JNI_CALLSTATICBOOLEANMETHODV_ENTRY(env, cls, (uintptr_t)methodID),
2353 HOTSPOT_JNI_CALLSTATICBOOLEANMETHODV_RETURN(_ret_ref));
2354 DEFINE_CALLSTATICMETHODV(jbyte, Byte, T_BYTE
2355 , HOTSPOT_JNI_CALLSTATICBYTEMETHODV_ENTRY(env, cls, (uintptr_t)methodID),
2356 HOTSPOT_JNI_CALLSTATICBYTEMETHODV_RETURN(_ret_ref));
2357 DEFINE_CALLSTATICMETHODV(jchar, Char, T_CHAR
2358 , HOTSPOT_JNI_CALLSTATICCHARMETHODV_ENTRY(env, cls, (uintptr_t)methodID),
2359 HOTSPOT_JNI_CALLSTATICCHARMETHODV_RETURN(_ret_ref));
2360 DEFINE_CALLSTATICMETHODV(jshort, Short, T_SHORT
2361 , HOTSPOT_JNI_CALLSTATICSHORTMETHODV_ENTRY(env, cls, (uintptr_t)methodID),
2362 HOTSPOT_JNI_CALLSTATICSHORTMETHODV_RETURN(_ret_ref));
2363
2364 DEFINE_CALLSTATICMETHODV(jobject, Object, T_OBJECT
2365 , HOTSPOT_JNI_CALLSTATICOBJECTMETHODV_ENTRY(env, cls, (uintptr_t)methodID),
2366 HOTSPOT_JNI_CALLSTATICOBJECTMETHODV_RETURN(_ret_ref));
2367 DEFINE_CALLSTATICMETHODV(jint, Int, T_INT
2368 , HOTSPOT_JNI_CALLSTATICINTMETHODV_ENTRY(env, cls, (uintptr_t)methodID),
2369 HOTSPOT_JNI_CALLSTATICINTMETHODV_RETURN(_ret_ref));
2370 DEFINE_CALLSTATICMETHODV(jlong, Long, T_LONG
2371 , HOTSPOT_JNI_CALLSTATICLONGMETHODV_ENTRY(env, cls, (uintptr_t)methodID),
2372 HOTSPOT_JNI_CALLSTATICLONGMETHODV_RETURN(_ret_ref));
2373 // Float and double probes don't return value because dtrace doesn't currently support it
2374 DEFINE_CALLSTATICMETHODV(jfloat, Float, T_FLOAT
2375 , HOTSPOT_JNI_CALLSTATICFLOATMETHODV_ENTRY(env, cls, (uintptr_t)methodID),
2376 HOTSPOT_JNI_CALLSTATICFLOATMETHODV_RETURN());
2377 DEFINE_CALLSTATICMETHODV(jdouble, Double, T_DOUBLE
2378 , HOTSPOT_JNI_CALLSTATICDOUBLEMETHODV_ENTRY(env, cls, (uintptr_t)methodID),
2379 HOTSPOT_JNI_CALLSTATICDOUBLEMETHODV_RETURN());
2380
2381 #define DEFINE_CALLSTATICMETHODA(ResultType, Result, Tag \
2382 , EntryProbe, ResultProbe) \
2383 \
2384 DT_RETURN_MARK_DECL_FOR(Result, CallStatic##Result##MethodA, ResultType \
2385 , ResultProbe); \
2386 \
2387 JNI_ENTRY(ResultType, \
2388 jni_CallStatic##Result##MethodA(JNIEnv *env, jclass cls, jmethodID methodID, const jvalue *args)) \
2389 JNIWrapper("CallStatic" XSTR(Result) "MethodA"); \
2390 \
2391 EntryProbe; \
2392 ResultType ret = 0;\
2393 DT_RETURN_MARK_FOR(Result, CallStatic##Result##MethodA, ResultType, \
2394 (const ResultType&)ret);\
2395 \
2396 JavaValue jvalue(Tag); \
2397 JNI_ArgumentPusherArray ap(methodID, args); \
2398 jni_invoke_static(env, &jvalue, NULL, JNI_STATIC, methodID, &ap, CHECK_0); \
2399 ret = jvalue.get_##ResultType(); \
2400 return ret;\
2401 JNI_END
2402
2403 // the runtime type of subword integral basic types is integer
2404 DEFINE_CALLSTATICMETHODA(jboolean, Boolean, T_BOOLEAN
2405 , HOTSPOT_JNI_CALLSTATICBOOLEANMETHODA_ENTRY(env, cls, (uintptr_t)methodID),
2406 HOTSPOT_JNI_CALLSTATICBOOLEANMETHODA_RETURN(_ret_ref));
2407 DEFINE_CALLSTATICMETHODA(jbyte, Byte, T_BYTE
2408 , HOTSPOT_JNI_CALLSTATICBYTEMETHODA_ENTRY(env, cls, (uintptr_t)methodID),
2409 HOTSPOT_JNI_CALLSTATICBYTEMETHODA_RETURN(_ret_ref));
2410 DEFINE_CALLSTATICMETHODA(jchar, Char, T_CHAR
2411 , HOTSPOT_JNI_CALLSTATICCHARMETHODA_ENTRY(env, cls, (uintptr_t)methodID),
2412 HOTSPOT_JNI_CALLSTATICCHARMETHODA_RETURN(_ret_ref));
2413 DEFINE_CALLSTATICMETHODA(jshort, Short, T_SHORT
2414 , HOTSPOT_JNI_CALLSTATICSHORTMETHODA_ENTRY(env, cls, (uintptr_t)methodID),
2415 HOTSPOT_JNI_CALLSTATICSHORTMETHODA_RETURN(_ret_ref));
2416
2417 DEFINE_CALLSTATICMETHODA(jobject, Object, T_OBJECT
2418 , HOTSPOT_JNI_CALLSTATICOBJECTMETHODA_ENTRY(env, cls, (uintptr_t)methodID),
2419 HOTSPOT_JNI_CALLSTATICOBJECTMETHODA_RETURN(_ret_ref));
2420 DEFINE_CALLSTATICMETHODA(jint, Int, T_INT
2421 , HOTSPOT_JNI_CALLSTATICINTMETHODA_ENTRY(env, cls, (uintptr_t)methodID),
2422 HOTSPOT_JNI_CALLSTATICINTMETHODA_RETURN(_ret_ref));
2423 DEFINE_CALLSTATICMETHODA(jlong, Long, T_LONG
2424 , HOTSPOT_JNI_CALLSTATICLONGMETHODA_ENTRY(env, cls, (uintptr_t)methodID),
2425 HOTSPOT_JNI_CALLSTATICLONGMETHODA_RETURN(_ret_ref));
2426 // Float and double probes don't return value because dtrace doesn't currently support it
2427 DEFINE_CALLSTATICMETHODA(jfloat, Float, T_FLOAT
2428 , HOTSPOT_JNI_CALLSTATICFLOATMETHODA_ENTRY(env, cls, (uintptr_t)methodID),
2429 HOTSPOT_JNI_CALLSTATICFLOATMETHODA_RETURN());
2430 DEFINE_CALLSTATICMETHODA(jdouble, Double, T_DOUBLE
2431 , HOTSPOT_JNI_CALLSTATICDOUBLEMETHODA_ENTRY(env, cls, (uintptr_t)methodID),
2432 HOTSPOT_JNI_CALLSTATICDOUBLEMETHODA_RETURN());
2433
2434 DT_VOID_RETURN_MARK_DECL(CallStaticVoidMethod
2435 , HOTSPOT_JNI_CALLSTATICVOIDMETHOD_RETURN());
2436 DT_VOID_RETURN_MARK_DECL(CallStaticVoidMethodV
2437 , HOTSPOT_JNI_CALLSTATICVOIDMETHODV_RETURN());
2438 DT_VOID_RETURN_MARK_DECL(CallStaticVoidMethodA
2439 , HOTSPOT_JNI_CALLSTATICVOIDMETHODA_RETURN());
2440 #endif /* USDT2 */
2441
2442 JNI_ENTRY(void, jni_CallStaticVoidMethod(JNIEnv *env, jclass cls, jmethodID methodID, ...))
2443 JNIWrapper("CallStaticVoidMethod");
2444 #ifndef USDT2
2445 DTRACE_PROBE3(hotspot_jni, CallStaticVoidMethod__entry, env, cls, methodID);
2446 #else /* USDT2 */
2447 HOTSPOT_JNI_CALLSTATICVOIDMETHOD_ENTRY(env, cls, (uintptr_t) methodID);
2448 #endif /* USDT2 */
2449 DT_VOID_RETURN_MARK(CallStaticVoidMethod);
2450
2451 va_list args;
2452 va_start(args, methodID);
2453 JavaValue jvalue(T_VOID);
2454 JNI_ArgumentPusherVaArg ap(methodID, args);
2455 jni_invoke_static(env, &jvalue, NULL, JNI_STATIC, methodID, &ap, CHECK);
2456 va_end(args);
2457 JNI_END
2458
2459
2460 JNI_ENTRY(void, jni_CallStaticVoidMethodV(JNIEnv *env, jclass cls, jmethodID methodID, va_list args))
2461 JNIWrapper("CallStaticVoidMethodV");
2462 #ifndef USDT2
2463 DTRACE_PROBE3(hotspot_jni, CallStaticVoidMethodV__entry, env, cls, methodID);
2464 #else /* USDT2 */
2465 HOTSPOT_JNI_CALLSTATICVOIDMETHODV_ENTRY(env, cls, (uintptr_t) methodID);
2466 #endif /* USDT2 */
2467 DT_VOID_RETURN_MARK(CallStaticVoidMethodV);
2468
2469 JavaValue jvalue(T_VOID);
2470 JNI_ArgumentPusherVaArg ap(methodID, args);
2471 jni_invoke_static(env, &jvalue, NULL, JNI_STATIC, methodID, &ap, CHECK);
2472 JNI_END
2473
2474
2475 JNI_ENTRY(void, jni_CallStaticVoidMethodA(JNIEnv *env, jclass cls, jmethodID methodID, const jvalue *args))
2476 JNIWrapper("CallStaticVoidMethodA");
2477 #ifndef USDT2
2478 DTRACE_PROBE3(hotspot_jni, CallStaticVoidMethodA__entry, env, cls, methodID);
2479 #else /* USDT2 */
2480 HOTSPOT_JNI_CALLSTATICVOIDMETHODA_ENTRY(env, cls, (uintptr_t) methodID);
2481 #endif /* USDT2 */
2482 DT_VOID_RETURN_MARK(CallStaticVoidMethodA);
2483
2484 JavaValue jvalue(T_VOID);
2485 JNI_ArgumentPusherArray ap(methodID, args);
2486 jni_invoke_static(env, &jvalue, NULL, JNI_STATIC, methodID, &ap, CHECK);
2487 JNI_END
2488
2489
2490 //
2491 // Accessing Fields
2492 //
2493
2494
2495 #ifndef USDT2
2496 DT_RETURN_MARK_DECL(GetFieldID, jfieldID);
2497 #else /* USDT2 */
2498 DT_RETURN_MARK_DECL(GetFieldID, jfieldID
2499 , HOTSPOT_JNI_GETFIELDID_RETURN((uintptr_t)_ret_ref));
2500 #endif /* USDT2 */
2501
2502 JNI_ENTRY(jfieldID, jni_GetFieldID(JNIEnv *env, jclass clazz,
2503 const char *name, const char *sig))
2504 JNIWrapper("GetFieldID");
2505 #ifndef USDT2
2506 DTRACE_PROBE4(hotspot_jni, GetFieldID__entry, env, clazz, name, sig);
2507 #else /* USDT2 */
2508 HOTSPOT_JNI_GETFIELDID_ENTRY(env, clazz, (char *) name, (char *) sig);
2509 #endif /* USDT2 */
2510 jfieldID ret = 0;
2511 DT_RETURN_MARK(GetFieldID, jfieldID, (const jfieldID&)ret);
2512
2513 // The class should have been loaded (we have an instance of the class
2514 // passed in) so the field and signature should already be in the symbol
2515 // table. If they're not there, the field doesn't exist.
2516 TempNewSymbol fieldname = SymbolTable::probe(name, (int)strlen(name));
2517 TempNewSymbol signame = SymbolTable::probe(sig, (int)strlen(sig));
2518 if (fieldname == NULL || signame == NULL) {
2519 THROW_MSG_0(vmSymbols::java_lang_NoSuchFieldError(), (char*) name);
2520 }
2521 KlassHandle k(THREAD,
2522 java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz)));
2523 // Make sure class is initialized before handing id's out to fields
2524 k()->initialize(CHECK_NULL);
2525
2526 fieldDescriptor fd;
2527 if (!k()->oop_is_instance() ||
2528 !InstanceKlass::cast(k())->find_field(fieldname, signame, false, &fd)) {
2529 THROW_MSG_0(vmSymbols::java_lang_NoSuchFieldError(), (char*) name);
2530 }
2531
2532 // A jfieldID for a non-static field is simply the offset of the field within the instanceOop
2533 // It may also have hash bits for k, if VerifyJNIFields is turned on.
2534 ret = jfieldIDWorkaround::to_instance_jfieldID(k(), fd.offset());
2535 return ret;
2536 JNI_END
2537
2538
2539 JNI_ENTRY(jobject, jni_GetObjectField(JNIEnv *env, jobject obj, jfieldID fieldID))
2540 JNIWrapper("GetObjectField");
2541 #ifndef USDT2
2542 DTRACE_PROBE3(hotspot_jni, GetObjectField__entry, env, obj, fieldID);
2543 #else /* USDT2 */
2544 HOTSPOT_JNI_GETOBJECTFIELD_ENTRY(env, obj, (uintptr_t) fieldID);
2545 #endif /* USDT2 */
2546 oop o = JNIHandles::resolve_non_null(obj);
2547 Klass* k = o->klass();
2548 int offset = jfieldIDWorkaround::from_instance_jfieldID(k, fieldID);
2549 // Keep JVMTI addition small and only check enabled flag here.
2550 // jni_GetField_probe() assumes that is okay to create handles.
2551 if (JvmtiExport::should_post_field_access()) {
2552 o = JvmtiExport::jni_GetField_probe(thread, obj, o, k, fieldID, false);
2553 }
2554 jobject ret = JNIHandles::make_local(env, o->obj_field(offset));
2555 #if INCLUDE_ALL_GCS
2556 // If G1 is enabled and we are accessing the value of the referent
2557 // field in a reference object then we need to register a non-null
2558 // referent with the SATB barrier.
2559 if (UseG1GC) {
2560 bool needs_barrier = false;
2561
2562 if (ret != NULL &&
2563 offset == java_lang_ref_Reference::referent_offset &&
2564 InstanceKlass::cast(k)->reference_type() != REF_NONE) {
2565 assert(InstanceKlass::cast(k)->is_subclass_of(SystemDictionary::Reference_klass()), "sanity");
2566 needs_barrier = true;
2567 }
2568
2569 if (needs_barrier) {
2570 oop referent = JNIHandles::resolve(ret);
2571 G1SATBCardTableModRefBS::enqueue(referent);
2572 }
2573 }
2574 #endif // INCLUDE_ALL_GCS
2575 #ifndef USDT2
2576 DTRACE_PROBE1(hotspot_jni, GetObjectField__return, ret);
2577 #else /* USDT2 */
2578 HOTSPOT_JNI_GETOBJECTFIELD_RETURN(ret);
2579 #endif /* USDT2 */
2580 return ret;
2581 JNI_END
2582
2583
2584 #ifndef USDT2
2585 #define DEFINE_GETFIELD(Return,Fieldname,Result) \
2586 \
2587 DT_RETURN_MARK_DECL_FOR(Result, Get##Result##Field, Return);\
2588 \
2589 JNI_QUICK_ENTRY(Return, jni_Get##Result##Field(JNIEnv *env, jobject obj, jfieldID fieldID)) \
2590 JNIWrapper("Get" XSTR(Result) "Field"); \
2591 \
2592 DTRACE_PROBE3(hotspot_jni, Get##Result##Field__entry, env, obj, fieldID);\
2593 Return ret = 0;\
2594 DT_RETURN_MARK_FOR(Result, Get##Result##Field, Return, (const Return&)ret);\
2595 \
2596 oop o = JNIHandles::resolve_non_null(obj); \
2597 Klass* k = o->klass(); \
2598 int offset = jfieldIDWorkaround::from_instance_jfieldID(k, fieldID); \
2599 /* Keep JVMTI addition small and only check enabled flag here. */ \
2600 /* jni_GetField_probe_nh() assumes that is not okay to create handles */ \
2601 /* and creates a ResetNoHandleMark. */ \
2602 if (JvmtiExport::should_post_field_access()) { \
2603 o = JvmtiExport::jni_GetField_probe_nh(thread, obj, o, k, fieldID, false); \
2604 } \
2605 ret = o->Fieldname##_field(offset); \
2606 return ret; \
2607 JNI_END
2608
2609 DEFINE_GETFIELD(jboolean, bool, Boolean)
2610 DEFINE_GETFIELD(jbyte, byte, Byte)
2611 DEFINE_GETFIELD(jchar, char, Char)
2612 DEFINE_GETFIELD(jshort, short, Short)
2613 DEFINE_GETFIELD(jint, int, Int)
2614 DEFINE_GETFIELD(jlong, long, Long)
2615 DEFINE_GETFIELD(jfloat, float, Float)
2616 DEFINE_GETFIELD(jdouble, double, Double)
2617
2618 #else /* USDT2 */
2619
2620 #define DEFINE_GETFIELD(Return,Fieldname,Result \
2621 , EntryProbe, ReturnProbe) \
2622 \
2623 DT_RETURN_MARK_DECL_FOR(Result, Get##Result##Field, Return \
2624 , ReturnProbe); \
2625 \
2626 JNI_QUICK_ENTRY(Return, jni_Get##Result##Field(JNIEnv *env, jobject obj, jfieldID fieldID)) \
2627 JNIWrapper("Get" XSTR(Result) "Field"); \
2628 \
2629 EntryProbe; \
2630 Return ret = 0;\
2631 DT_RETURN_MARK_FOR(Result, Get##Result##Field, Return, (const Return&)ret);\
2632 \
2633 oop o = JNIHandles::resolve_non_null(obj); \
2634 Klass* k = o->klass(); \
2635 int offset = jfieldIDWorkaround::from_instance_jfieldID(k, fieldID); \
2636 /* Keep JVMTI addition small and only check enabled flag here. */ \
2637 /* jni_GetField_probe_nh() assumes that is not okay to create handles */ \
2638 /* and creates a ResetNoHandleMark. */ \
2639 if (JvmtiExport::should_post_field_access()) { \
2640 o = JvmtiExport::jni_GetField_probe_nh(thread, obj, o, k, fieldID, false); \
2641 } \
2642 ret = o->Fieldname##_field(offset); \
2643 return ret; \
2644 JNI_END
2645
2646 DEFINE_GETFIELD(jboolean, bool, Boolean
2647 , HOTSPOT_JNI_GETBOOLEANFIELD_ENTRY(env, obj, (uintptr_t)fieldID),
2648 HOTSPOT_JNI_GETBOOLEANFIELD_RETURN(_ret_ref))
2649 DEFINE_GETFIELD(jbyte, byte, Byte
2650 , HOTSPOT_JNI_GETBYTEFIELD_ENTRY(env, obj, (uintptr_t)fieldID),
2651 HOTSPOT_JNI_GETBYTEFIELD_RETURN(_ret_ref))
2652 DEFINE_GETFIELD(jchar, char, Char
2653 , HOTSPOT_JNI_GETCHARFIELD_ENTRY(env, obj, (uintptr_t)fieldID),
2654 HOTSPOT_JNI_GETCHARFIELD_RETURN(_ret_ref))
2655 DEFINE_GETFIELD(jshort, short, Short
2656 , HOTSPOT_JNI_GETSHORTFIELD_ENTRY(env, obj, (uintptr_t)fieldID),
2657 HOTSPOT_JNI_GETSHORTFIELD_RETURN(_ret_ref))
2658 DEFINE_GETFIELD(jint, int, Int
2659 , HOTSPOT_JNI_GETINTFIELD_ENTRY(env, obj, (uintptr_t)fieldID),
2660 HOTSPOT_JNI_GETINTFIELD_RETURN(_ret_ref))
2661 DEFINE_GETFIELD(jlong, long, Long
2662 , HOTSPOT_JNI_GETLONGFIELD_ENTRY(env, obj, (uintptr_t)fieldID),
2663 HOTSPOT_JNI_GETLONGFIELD_RETURN(_ret_ref))
2664 // Float and double probes don't return value because dtrace doesn't currently support it
2665 DEFINE_GETFIELD(jfloat, float, Float
2666 , HOTSPOT_JNI_GETFLOATFIELD_ENTRY(env, obj, (uintptr_t)fieldID),
2667 HOTSPOT_JNI_GETFLOATFIELD_RETURN())
2668 DEFINE_GETFIELD(jdouble, double, Double
2669 , HOTSPOT_JNI_GETDOUBLEFIELD_ENTRY(env, obj, (uintptr_t)fieldID),
2670 HOTSPOT_JNI_GETDOUBLEFIELD_RETURN())
2671 #endif /* USDT2 */
2672
2673 address jni_GetBooleanField_addr() {
2674 return (address)jni_GetBooleanField;
2675 }
2676 address jni_GetByteField_addr() {
2677 return (address)jni_GetByteField;
2678 }
2679 address jni_GetCharField_addr() {
2680 return (address)jni_GetCharField;
2681 }
2682 address jni_GetShortField_addr() {
2683 return (address)jni_GetShortField;
2684 }
2685 address jni_GetIntField_addr() {
2686 return (address)jni_GetIntField;
2687 }
2688 address jni_GetLongField_addr() {
2689 return (address)jni_GetLongField;
2690 }
2691 address jni_GetFloatField_addr() {
2692 return (address)jni_GetFloatField;
2693 }
2694 address jni_GetDoubleField_addr() {
2695 return (address)jni_GetDoubleField;
2696 }
2697
2698 JNI_QUICK_ENTRY(void, jni_SetObjectField(JNIEnv *env, jobject obj, jfieldID fieldID, jobject value))
2699 JNIWrapper("SetObjectField");
2700 #ifndef USDT2
2701 DTRACE_PROBE4(hotspot_jni, SetObjectField__entry, env, obj, fieldID, value);
2702 #else /* USDT2 */
2703 HOTSPOT_JNI_SETOBJECTFIELD_ENTRY(env, obj, (uintptr_t) fieldID, value);
2704 #endif /* USDT2 */
2705 oop o = JNIHandles::resolve_non_null(obj);
2706 Klass* k = o->klass();
2707 int offset = jfieldIDWorkaround::from_instance_jfieldID(k, fieldID);
2708 // Keep JVMTI addition small and only check enabled flag here.
2709 // jni_SetField_probe_nh() assumes that is not okay to create handles
2710 // and creates a ResetNoHandleMark.
2711 if (JvmtiExport::should_post_field_modification()) {
2712 jvalue field_value;
2713 field_value.l = value;
2714 o = JvmtiExport::jni_SetField_probe_nh(thread, obj, o, k, fieldID, false, 'L', (jvalue *)&field_value);
2715 }
2716 o->obj_field_put(offset, JNIHandles::resolve(value));
2717 #ifndef USDT2
2718 DTRACE_PROBE(hotspot_jni, SetObjectField__return);
2719 #else /* USDT2 */
2720 HOTSPOT_JNI_SETOBJECTFIELD_RETURN();
2721 #endif /* USDT2 */
2722 JNI_END
2723
2724 #ifndef USDT2
2725 #define DEFINE_SETFIELD(Argument,Fieldname,Result,SigType,unionType) \
2726 \
2727 JNI_QUICK_ENTRY(void, jni_Set##Result##Field(JNIEnv *env, jobject obj, jfieldID fieldID, Argument value)) \
2728 JNIWrapper("Set" XSTR(Result) "Field"); \
2729 \
2730 FP_SELECT_##Result( \
2731 DTRACE_PROBE4(hotspot_jni, Set##Result##Field__entry, env, obj, fieldID, value), \
2732 DTRACE_PROBE3(hotspot_jni, Set##Result##Field__entry, env, obj, fieldID)); \
2733 \
2734 oop o = JNIHandles::resolve_non_null(obj); \
2735 Klass* k = o->klass(); \
2736 int offset = jfieldIDWorkaround::from_instance_jfieldID(k, fieldID); \
2737 /* Keep JVMTI addition small and only check enabled flag here. */ \
2738 /* jni_SetField_probe_nh() assumes that is not okay to create handles */ \
2739 /* and creates a ResetNoHandleMark. */ \
2740 if (JvmtiExport::should_post_field_modification()) { \
2741 jvalue field_value; \
2742 field_value.unionType = value; \
2743 o = JvmtiExport::jni_SetField_probe_nh(thread, obj, o, k, fieldID, false, SigType, (jvalue *)&field_value); \
2744 } \
2745 o->Fieldname##_field_put(offset, value); \
2746 DTRACE_PROBE(hotspot_jni, Set##Result##Field__return);\
2747 JNI_END
2748
2749 DEFINE_SETFIELD(jboolean, bool, Boolean, 'Z', z)
2750 DEFINE_SETFIELD(jbyte, byte, Byte, 'B', b)
2751 DEFINE_SETFIELD(jchar, char, Char, 'C', c)
2752 DEFINE_SETFIELD(jshort, short, Short, 'S', s)
2753 DEFINE_SETFIELD(jint, int, Int, 'I', i)
2754 DEFINE_SETFIELD(jlong, long, Long, 'J', j)
2755 DEFINE_SETFIELD(jfloat, float, Float, 'F', f)
2756 DEFINE_SETFIELD(jdouble, double, Double, 'D', d)
2757
2758 #else /* USDT2 */
2759
2760 #define DEFINE_SETFIELD(Argument,Fieldname,Result,SigType,unionType \
2761 , EntryProbe, ReturnProbe) \
2762 \
2763 JNI_QUICK_ENTRY(void, jni_Set##Result##Field(JNIEnv *env, jobject obj, jfieldID fieldID, Argument value)) \
2764 JNIWrapper("Set" XSTR(Result) "Field"); \
2765 \
2766 EntryProbe; \
2767 \
2768 oop o = JNIHandles::resolve_non_null(obj); \
2769 Klass* k = o->klass(); \
2770 int offset = jfieldIDWorkaround::from_instance_jfieldID(k, fieldID); \
2771 /* Keep JVMTI addition small and only check enabled flag here. */ \
2772 /* jni_SetField_probe_nh() assumes that is not okay to create handles */ \
2773 /* and creates a ResetNoHandleMark. */ \
2774 if (JvmtiExport::should_post_field_modification()) { \
2775 jvalue field_value; \
2776 field_value.unionType = value; \
2777 o = JvmtiExport::jni_SetField_probe_nh(thread, obj, o, k, fieldID, false, SigType, (jvalue *)&field_value); \
2778 } \
2779 o->Fieldname##_field_put(offset, value); \
2780 ReturnProbe; \
2781 JNI_END
2782
2783 DEFINE_SETFIELD(jboolean, bool, Boolean, 'Z', z
2784 , HOTSPOT_JNI_SETBOOLEANFIELD_ENTRY(env, obj, (uintptr_t)fieldID, value),
2785 HOTSPOT_JNI_SETBOOLEANFIELD_RETURN())
2786 DEFINE_SETFIELD(jbyte, byte, Byte, 'B', b
2787 , HOTSPOT_JNI_SETBYTEFIELD_ENTRY(env, obj, (uintptr_t)fieldID, value),
2788 HOTSPOT_JNI_SETBYTEFIELD_RETURN())
2789 DEFINE_SETFIELD(jchar, char, Char, 'C', c
2790 , HOTSPOT_JNI_SETCHARFIELD_ENTRY(env, obj, (uintptr_t)fieldID, value),
2791 HOTSPOT_JNI_SETCHARFIELD_RETURN())
2792 DEFINE_SETFIELD(jshort, short, Short, 'S', s
2793 , HOTSPOT_JNI_SETSHORTFIELD_ENTRY(env, obj, (uintptr_t)fieldID, value),
2794 HOTSPOT_JNI_SETSHORTFIELD_RETURN())
2795 DEFINE_SETFIELD(jint, int, Int, 'I', i
2796 , HOTSPOT_JNI_SETINTFIELD_ENTRY(env, obj, (uintptr_t)fieldID, value),
2797 HOTSPOT_JNI_SETINTFIELD_RETURN())
2798 DEFINE_SETFIELD(jlong, long, Long, 'J', j
2799 , HOTSPOT_JNI_SETLONGFIELD_ENTRY(env, obj, (uintptr_t)fieldID, value),
2800 HOTSPOT_JNI_SETLONGFIELD_RETURN())
2801 // Float and double probes don't return value because dtrace doesn't currently support it
2802 DEFINE_SETFIELD(jfloat, float, Float, 'F', f
2803 , HOTSPOT_JNI_SETFLOATFIELD_ENTRY(env, obj, (uintptr_t)fieldID),
2804 HOTSPOT_JNI_SETFLOATFIELD_RETURN())
2805 DEFINE_SETFIELD(jdouble, double, Double, 'D', d
2806 , HOTSPOT_JNI_SETDOUBLEFIELD_ENTRY(env, obj, (uintptr_t)fieldID),
2807 HOTSPOT_JNI_SETDOUBLEFIELD_RETURN())
2808 #endif /* USDT2 */
2809
2810 #ifndef USDT2
2811 DT_RETURN_MARK_DECL(ToReflectedField, jobject);
2812 #else /* USDT2 */
2813 DT_RETURN_MARK_DECL(ToReflectedField, jobject
2814 , HOTSPOT_JNI_TOREFLECTEDFIELD_RETURN(_ret_ref));
2815 #endif /* USDT2 */
2816
2817 JNI_ENTRY(jobject, jni_ToReflectedField(JNIEnv *env, jclass cls, jfieldID fieldID, jboolean isStatic))
2818 JNIWrapper("ToReflectedField");
2819 #ifndef USDT2
2820 DTRACE_PROBE4(hotspot_jni, ToReflectedField__entry,
2821 env, cls, fieldID, isStatic);
2822 #else /* USDT2 */
2823 HOTSPOT_JNI_TOREFLECTEDFIELD_ENTRY(env, cls, (uintptr_t) fieldID, isStatic);
2824 #endif /* USDT2 */
2825 jobject ret = NULL;
2826 DT_RETURN_MARK(ToReflectedField, jobject, (const jobject&)ret);
2827
2828 fieldDescriptor fd;
2829 bool found = false;
2830 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls));
2831
2832 assert(jfieldIDWorkaround::is_static_jfieldID(fieldID) == (isStatic != 0), "invalid fieldID");
2833
2834 if (isStatic) {
2835 // Static field. The fieldID a JNIid specifying the field holder and the offset within the Klass*.
2836 JNIid* id = jfieldIDWorkaround::from_static_jfieldID(fieldID);
2837 assert(id->is_static_field_id(), "invalid static field id");
2838 found = id->find_local_field(&fd);
2839 } else {
2840 // Non-static field. The fieldID is really the offset of the field within the instanceOop.
2841 int offset = jfieldIDWorkaround::from_instance_jfieldID(k, fieldID);
2842 found = InstanceKlass::cast(k)->find_field_from_offset(offset, false, &fd);
2843 }
2844 assert(found, "bad fieldID passed into jni_ToReflectedField");
2845 oop reflected = Reflection::new_field(&fd, UseNewReflection, CHECK_NULL);
2846 ret = JNIHandles::make_local(env, reflected);
2847 return ret;
2848 JNI_END
2849
2850
2851 //
2852 // Accessing Static Fields
2853 //
2854 #ifndef USDT2
2855 DT_RETURN_MARK_DECL(GetStaticFieldID, jfieldID);
2856 #else /* USDT2 */
2857 DT_RETURN_MARK_DECL(GetStaticFieldID, jfieldID
2858 , HOTSPOT_JNI_GETSTATICFIELDID_RETURN((uintptr_t)_ret_ref));
2859 #endif /* USDT2 */
2860
2861 JNI_ENTRY(jfieldID, jni_GetStaticFieldID(JNIEnv *env, jclass clazz,
2862 const char *name, const char *sig))
2863 JNIWrapper("GetStaticFieldID");
2864 #ifndef USDT2
2865 DTRACE_PROBE4(hotspot_jni, GetStaticFieldID__entry, env, clazz, name, sig);
2866 #else /* USDT2 */
2867 HOTSPOT_JNI_GETSTATICFIELDID_ENTRY(env, clazz, (char *) name, (char *) sig);
2868 #endif /* USDT2 */
2869 jfieldID ret = NULL;
2870 DT_RETURN_MARK(GetStaticFieldID, jfieldID, (const jfieldID&)ret);
2871
2872 // The class should have been loaded (we have an instance of the class
2873 // passed in) so the field and signature should already be in the symbol
2874 // table. If they're not there, the field doesn't exist.
2875 TempNewSymbol fieldname = SymbolTable::probe(name, (int)strlen(name));
2876 TempNewSymbol signame = SymbolTable::probe(sig, (int)strlen(sig));
2877 if (fieldname == NULL || signame == NULL) {
2878 THROW_MSG_0(vmSymbols::java_lang_NoSuchFieldError(), (char*) name);
2879 }
2880 KlassHandle k(THREAD,
2881 java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz)));
2882 // Make sure class is initialized before handing id's out to static fields
2883 k()->initialize(CHECK_NULL);
2884
2885 fieldDescriptor fd;
2886 if (!k()->oop_is_instance() ||
2887 !InstanceKlass::cast(k())->find_field(fieldname, signame, true, &fd)) {
2888 THROW_MSG_0(vmSymbols::java_lang_NoSuchFieldError(), (char*) name);
2889 }
2890
2891 // A jfieldID for a static field is a JNIid specifying the field holder and the offset within the Klass*
2892 JNIid* id = fd.field_holder()->jni_id_for(fd.offset());
2893 debug_only(id->set_is_static_field_id();)
2894
2895 debug_only(id->verify(fd.field_holder()));
2896
2897 ret = jfieldIDWorkaround::to_static_jfieldID(id);
2898 return ret;
2899 JNI_END
2900
2901
2902 JNI_ENTRY(jobject, jni_GetStaticObjectField(JNIEnv *env, jclass clazz, jfieldID fieldID))
2903 JNIWrapper("GetStaticObjectField");
2904 #ifndef USDT2
2905 DTRACE_PROBE3(hotspot_jni, GetStaticObjectField__entry, env, clazz, fieldID);
2906 #else /* USDT2 */
2907 HOTSPOT_JNI_GETSTATICOBJECTFIELD_ENTRY(env, clazz, (uintptr_t) fieldID);
2908 #endif /* USDT2 */
2909 #if INCLUDE_JNI_CHECK
2910 DEBUG_ONLY(Klass* param_k = jniCheck::validate_class(thread, clazz);)
2911 #endif // INCLUDE_JNI_CHECK
2912 JNIid* id = jfieldIDWorkaround::from_static_jfieldID(fieldID);
2913 assert(id->is_static_field_id(), "invalid static field id");
2914 // Keep JVMTI addition small and only check enabled flag here.
2915 // jni_GetField_probe() assumes that is okay to create handles.
2916 if (JvmtiExport::should_post_field_access()) {
2917 JvmtiExport::jni_GetField_probe(thread, NULL, NULL, id->holder(), fieldID, true);
2918 }
2919 jobject ret = JNIHandles::make_local(id->holder()->java_mirror()->obj_field(id->offset()));
2920 #ifndef USDT2
2921 DTRACE_PROBE1(hotspot_jni, GetStaticObjectField__return, ret);
2922 #else /* USDT2 */
2923 HOTSPOT_JNI_GETSTATICOBJECTFIELD_RETURN(ret);
2924 #endif /* USDT2 */
2925 return ret;
2926 JNI_END
2927
2928 #ifndef USDT2
2929 #define DEFINE_GETSTATICFIELD(Return,Fieldname,Result) \
2930 \
2931 DT_RETURN_MARK_DECL_FOR(Result, GetStatic##Result##Field, Return);\
2932 \
2933 JNI_ENTRY(Return, jni_GetStatic##Result##Field(JNIEnv *env, jclass clazz, jfieldID fieldID)) \
2934 JNIWrapper("GetStatic" XSTR(Result) "Field"); \
2935 DTRACE_PROBE3(hotspot_jni, GetStatic##Result##Field__entry, env, clazz, fieldID);\
2936 Return ret = 0;\
2937 DT_RETURN_MARK_FOR(Result, GetStatic##Result##Field, Return, \
2938 (const Return&)ret);\
2939 JNIid* id = jfieldIDWorkaround::from_static_jfieldID(fieldID); \
2940 assert(id->is_static_field_id(), "invalid static field id"); \
2941 /* Keep JVMTI addition small and only check enabled flag here. */ \
2942 /* jni_GetField_probe() assumes that is okay to create handles. */ \
2943 if (JvmtiExport::should_post_field_access()) { \
2944 JvmtiExport::jni_GetField_probe(thread, NULL, NULL, id->holder(), fieldID, true); \
2945 } \
2946 ret = id->holder()->java_mirror()-> Fieldname##_field (id->offset()); \
2947 return ret;\
2948 JNI_END
2949
2950 DEFINE_GETSTATICFIELD(jboolean, bool, Boolean)
2951 DEFINE_GETSTATICFIELD(jbyte, byte, Byte)
2952 DEFINE_GETSTATICFIELD(jchar, char, Char)
2953 DEFINE_GETSTATICFIELD(jshort, short, Short)
2954 DEFINE_GETSTATICFIELD(jint, int, Int)
2955 DEFINE_GETSTATICFIELD(jlong, long, Long)
2956 DEFINE_GETSTATICFIELD(jfloat, float, Float)
2957 DEFINE_GETSTATICFIELD(jdouble, double, Double)
2958
2959 #else /* USDT2 */
2960
2961 #define DEFINE_GETSTATICFIELD(Return,Fieldname,Result \
2962 , EntryProbe, ReturnProbe) \
2963 \
2964 DT_RETURN_MARK_DECL_FOR(Result, GetStatic##Result##Field, Return \
2965 , ReturnProbe); \
2966 \
2967 JNI_ENTRY(Return, jni_GetStatic##Result##Field(JNIEnv *env, jclass clazz, jfieldID fieldID)) \
2968 JNIWrapper("GetStatic" XSTR(Result) "Field"); \
2969 EntryProbe; \
2970 Return ret = 0;\
2971 DT_RETURN_MARK_FOR(Result, GetStatic##Result##Field, Return, \
2972 (const Return&)ret);\
2973 JNIid* id = jfieldIDWorkaround::from_static_jfieldID(fieldID); \
2974 assert(id->is_static_field_id(), "invalid static field id"); \
2975 /* Keep JVMTI addition small and only check enabled flag here. */ \
2976 /* jni_GetField_probe() assumes that is okay to create handles. */ \
2977 if (JvmtiExport::should_post_field_access()) { \
2978 JvmtiExport::jni_GetField_probe(thread, NULL, NULL, id->holder(), fieldID, true); \
2979 } \
2980 ret = id->holder()->java_mirror()-> Fieldname##_field (id->offset()); \
2981 return ret;\
2982 JNI_END
2983
2984 DEFINE_GETSTATICFIELD(jboolean, bool, Boolean
2985 , HOTSPOT_JNI_GETSTATICBOOLEANFIELD_ENTRY(env, clazz, (uintptr_t) fieldID), HOTSPOT_JNI_GETSTATICBOOLEANFIELD_RETURN(_ret_ref))
2986 DEFINE_GETSTATICFIELD(jbyte, byte, Byte
2987 , HOTSPOT_JNI_GETSTATICBYTEFIELD_ENTRY(env, clazz, (uintptr_t) fieldID), HOTSPOT_JNI_GETSTATICBYTEFIELD_RETURN(_ret_ref) )
2988 DEFINE_GETSTATICFIELD(jchar, char, Char
2989 , HOTSPOT_JNI_GETSTATICCHARFIELD_ENTRY(env, clazz, (uintptr_t) fieldID), HOTSPOT_JNI_GETSTATICCHARFIELD_RETURN(_ret_ref) )
2990 DEFINE_GETSTATICFIELD(jshort, short, Short
2991 , HOTSPOT_JNI_GETSTATICSHORTFIELD_ENTRY(env, clazz, (uintptr_t) fieldID), HOTSPOT_JNI_GETSTATICSHORTFIELD_RETURN(_ret_ref) )
2992 DEFINE_GETSTATICFIELD(jint, int, Int
2993 , HOTSPOT_JNI_GETSTATICINTFIELD_ENTRY(env, clazz, (uintptr_t) fieldID), HOTSPOT_JNI_GETSTATICINTFIELD_RETURN(_ret_ref) )
2994 DEFINE_GETSTATICFIELD(jlong, long, Long
2995 , HOTSPOT_JNI_GETSTATICLONGFIELD_ENTRY(env, clazz, (uintptr_t) fieldID), HOTSPOT_JNI_GETSTATICLONGFIELD_RETURN(_ret_ref) )
2996 // Float and double probes don't return value because dtrace doesn't currently support it
2997 DEFINE_GETSTATICFIELD(jfloat, float, Float
2998 , HOTSPOT_JNI_GETSTATICFLOATFIELD_ENTRY(env, clazz, (uintptr_t) fieldID), HOTSPOT_JNI_GETSTATICFLOATFIELD_RETURN() )
2999 DEFINE_GETSTATICFIELD(jdouble, double, Double
3000 , HOTSPOT_JNI_GETSTATICDOUBLEFIELD_ENTRY(env, clazz, (uintptr_t) fieldID), HOTSPOT_JNI_GETSTATICDOUBLEFIELD_RETURN() )
3001 #endif /* USDT2 */
3002
3003 JNI_ENTRY(void, jni_SetStaticObjectField(JNIEnv *env, jclass clazz, jfieldID fieldID, jobject value))
3004 JNIWrapper("SetStaticObjectField");
3005 #ifndef USDT2
3006 DTRACE_PROBE4(hotspot_jni, SetStaticObjectField__entry, env, clazz, fieldID, value);
3007 #else /* USDT2 */
3008 HOTSPOT_JNI_SETSTATICOBJECTFIELD_ENTRY(env, clazz, (uintptr_t) fieldID, value);
3009 #endif /* USDT2 */
3010 JNIid* id = jfieldIDWorkaround::from_static_jfieldID(fieldID);
3011 assert(id->is_static_field_id(), "invalid static field id");
3012 // Keep JVMTI addition small and only check enabled flag here.
3013 // jni_SetField_probe() assumes that is okay to create handles.
3014 if (JvmtiExport::should_post_field_modification()) {
3015 jvalue field_value;
3016 field_value.l = value;
3017 JvmtiExport::jni_SetField_probe(thread, NULL, NULL, id->holder(), fieldID, true, 'L', (jvalue *)&field_value);
3018 }
3019 id->holder()->java_mirror()->obj_field_put(id->offset(), JNIHandles::resolve(value));
3020 #ifndef USDT2
3021 DTRACE_PROBE(hotspot_jni, SetStaticObjectField__return);
3022 #else /* USDT2 */
3023 HOTSPOT_JNI_SETSTATICOBJECTFIELD_RETURN();
3024 #endif /* USDT2 */
3025 JNI_END
3026
3027
3028 #ifndef USDT2
3029 #define DEFINE_SETSTATICFIELD(Argument,Fieldname,Result,SigType,unionType) \
3030 \
3031 JNI_ENTRY(void, jni_SetStatic##Result##Field(JNIEnv *env, jclass clazz, jfieldID fieldID, Argument value)) \
3032 JNIWrapper("SetStatic" XSTR(Result) "Field"); \
3033 FP_SELECT_##Result( \
3034 DTRACE_PROBE4(hotspot_jni, SetStatic##Result##Field__entry, env, clazz, fieldID, value), \
3035 DTRACE_PROBE3(hotspot_jni, SetStatic##Result##Field__entry, env, clazz, fieldID)); \
3036 \
3037 JNIid* id = jfieldIDWorkaround::from_static_jfieldID(fieldID); \
3038 assert(id->is_static_field_id(), "invalid static field id"); \
3039 /* Keep JVMTI addition small and only check enabled flag here. */ \
3040 /* jni_SetField_probe() assumes that is okay to create handles. */ \
3041 if (JvmtiExport::should_post_field_modification()) { \
3042 jvalue field_value; \
3043 field_value.unionType = value; \
3044 JvmtiExport::jni_SetField_probe(thread, NULL, NULL, id->holder(), fieldID, true, SigType, (jvalue *)&field_value); \
3045 } \
3046 id->holder()->java_mirror()-> Fieldname##_field_put (id->offset(), value); \
3047 DTRACE_PROBE(hotspot_jni, SetStatic##Result##Field__return);\
3048 JNI_END
3049
3050 DEFINE_SETSTATICFIELD(jboolean, bool, Boolean, 'Z', z)
3051 DEFINE_SETSTATICFIELD(jbyte, byte, Byte, 'B', b)
3052 DEFINE_SETSTATICFIELD(jchar, char, Char, 'C', c)
3053 DEFINE_SETSTATICFIELD(jshort, short, Short, 'S', s)
3054 DEFINE_SETSTATICFIELD(jint, int, Int, 'I', i)
3055 DEFINE_SETSTATICFIELD(jlong, long, Long, 'J', j)
3056 DEFINE_SETSTATICFIELD(jfloat, float, Float, 'F', f)
3057 DEFINE_SETSTATICFIELD(jdouble, double, Double, 'D', d)
3058
3059 #else /* USDT2 */
3060
3061 #define DEFINE_SETSTATICFIELD(Argument,Fieldname,Result,SigType,unionType \
3062 , EntryProbe, ReturnProbe) \
3063 \
3064 JNI_ENTRY(void, jni_SetStatic##Result##Field(JNIEnv *env, jclass clazz, jfieldID fieldID, Argument value)) \
3065 JNIWrapper("SetStatic" XSTR(Result) "Field"); \
3066 EntryProbe; \
3067 \
3068 JNIid* id = jfieldIDWorkaround::from_static_jfieldID(fieldID); \
3069 assert(id->is_static_field_id(), "invalid static field id"); \
3070 /* Keep JVMTI addition small and only check enabled flag here. */ \
3071 /* jni_SetField_probe() assumes that is okay to create handles. */ \
3072 if (JvmtiExport::should_post_field_modification()) { \
3073 jvalue field_value; \
3074 field_value.unionType = value; \
3075 JvmtiExport::jni_SetField_probe(thread, NULL, NULL, id->holder(), fieldID, true, SigType, (jvalue *)&field_value); \
3076 } \
3077 id->holder()->java_mirror()-> Fieldname##_field_put (id->offset(), value); \
3078 ReturnProbe;\
3079 JNI_END
3080
3081 DEFINE_SETSTATICFIELD(jboolean, bool, Boolean, 'Z', z
3082 , HOTSPOT_JNI_SETSTATICBOOLEANFIELD_ENTRY(env, clazz, (uintptr_t)fieldID, value),
3083 HOTSPOT_JNI_SETBOOLEANFIELD_RETURN())
3084 DEFINE_SETSTATICFIELD(jbyte, byte, Byte, 'B', b
3085 , HOTSPOT_JNI_SETSTATICBYTEFIELD_ENTRY(env, clazz, (uintptr_t) fieldID, value),
3086 HOTSPOT_JNI_SETSTATICBYTEFIELD_RETURN())
3087 DEFINE_SETSTATICFIELD(jchar, char, Char, 'C', c
3088 , HOTSPOT_JNI_SETSTATICCHARFIELD_ENTRY(env, clazz, (uintptr_t) fieldID, value),
3089 HOTSPOT_JNI_SETSTATICCHARFIELD_RETURN())
3090 DEFINE_SETSTATICFIELD(jshort, short, Short, 'S', s
3091 , HOTSPOT_JNI_SETSTATICSHORTFIELD_ENTRY(env, clazz, (uintptr_t) fieldID, value),
3092 HOTSPOT_JNI_SETSTATICSHORTFIELD_RETURN())
3093 DEFINE_SETSTATICFIELD(jint, int, Int, 'I', i
3094 , HOTSPOT_JNI_SETSTATICINTFIELD_ENTRY(env, clazz, (uintptr_t) fieldID, value),
3095 HOTSPOT_JNI_SETSTATICINTFIELD_RETURN())
3096 DEFINE_SETSTATICFIELD(jlong, long, Long, 'J', j
3097 , HOTSPOT_JNI_SETSTATICLONGFIELD_ENTRY(env, clazz, (uintptr_t) fieldID, value),
3098 HOTSPOT_JNI_SETSTATICLONGFIELD_RETURN())
3099 // Float and double probes don't return value because dtrace doesn't currently support it
3100 DEFINE_SETSTATICFIELD(jfloat, float, Float, 'F', f
3101 , HOTSPOT_JNI_SETSTATICFLOATFIELD_ENTRY(env, clazz, (uintptr_t) fieldID),
3102 HOTSPOT_JNI_SETSTATICFLOATFIELD_RETURN())
3103 DEFINE_SETSTATICFIELD(jdouble, double, Double, 'D', d
3104 , HOTSPOT_JNI_SETSTATICDOUBLEFIELD_ENTRY(env, clazz, (uintptr_t) fieldID),
3105 HOTSPOT_JNI_SETSTATICDOUBLEFIELD_RETURN())
3106 #endif /* USDT2 */
3107
3108 //
3109 // String Operations
3110 //
3111
3112 // Unicode Interface
3113
3114 #ifndef USDT2
3115 DT_RETURN_MARK_DECL(NewString, jstring);
3116 #else /* USDT2 */
3117 DT_RETURN_MARK_DECL(NewString, jstring
3118 , HOTSPOT_JNI_NEWSTRING_RETURN(_ret_ref));
3119 #endif /* USDT2 */
3120
3121 JNI_ENTRY(jstring, jni_NewString(JNIEnv *env, const jchar *unicodeChars, jsize len))
3122 JNIWrapper("NewString");
3123 #ifndef USDT2
3124 DTRACE_PROBE3(hotspot_jni, NewString__entry, env, unicodeChars, len);
3125 #else /* USDT2 */
3126 HOTSPOT_JNI_NEWSTRING_ENTRY(env, (uint16_t *) unicodeChars, len);
3127 #endif /* USDT2 */
3128 jstring ret = NULL;
3129 DT_RETURN_MARK(NewString, jstring, (const jstring&)ret);
3130 oop string=java_lang_String::create_oop_from_unicode((jchar*) unicodeChars, len, CHECK_NULL);
3131 ret = (jstring) JNIHandles::make_local(env, string);
3132 return ret;
3133 JNI_END
3134
3135
3136 JNI_QUICK_ENTRY(jsize, jni_GetStringLength(JNIEnv *env, jstring string))
3137 JNIWrapper("GetStringLength");
3138 #ifndef USDT2
3139 DTRACE_PROBE2(hotspot_jni, GetStringLength__entry, env, string);
3140 #else /* USDT2 */
3141 HOTSPOT_JNI_GETSTRINGLENGTH_ENTRY(env, string);
3142 #endif /* USDT2 */
3143 jsize ret = 0;
3144 oop s = JNIHandles::resolve_non_null(string);
3145 if (java_lang_String::value(s) != NULL) {
3146 ret = java_lang_String::length(s);
3147 }
3148 #ifndef USDT2
3149 DTRACE_PROBE1(hotspot_jni, GetStringLength__return, ret);
3150 #else /* USDT2 */
3151 HOTSPOT_JNI_GETSTRINGLENGTH_RETURN(ret);
3152 #endif /* USDT2 */
3153 return ret;
3154 JNI_END
3155
3156
3157 JNI_QUICK_ENTRY(const jchar*, jni_GetStringChars(
3158 JNIEnv *env, jstring string, jboolean *isCopy))
3159 JNIWrapper("GetStringChars");
3160 #ifndef USDT2
3161 DTRACE_PROBE3(hotspot_jni, GetStringChars__entry, env, string, isCopy);
3162 #else /* USDT2 */
3163 HOTSPOT_JNI_GETSTRINGCHARS_ENTRY(env, string, (uintptr_t *) isCopy);
3164 #endif /* USDT2 */
3165 jchar* buf = NULL;
3166 oop s = JNIHandles::resolve_non_null(string);
3167 typeArrayOop s_value = java_lang_String::value(s);
3168 if (s_value != NULL) {
3169 int s_len = java_lang_String::length(s);
3170 int s_offset = java_lang_String::offset(s);
3171 buf = NEW_C_HEAP_ARRAY_RETURN_NULL(jchar, s_len + 1, mtInternal); // add one for zero termination
3172 /* JNI Specification states return NULL on OOM */
3173 if (buf != NULL) {
3174 if (s_len > 0) {
3175 memcpy(buf, s_value->char_at_addr(s_offset), sizeof(jchar)*s_len);
3176 }
3177 buf[s_len] = 0;
3178 //%note jni_5
3179 if (isCopy != NULL) {
3180 *isCopy = JNI_TRUE;
3181 }
3182 }
3183 }
3184 #ifndef USDT2
3185 DTRACE_PROBE1(hotspot_jni, GetStringChars__return, buf);
3186 #else /* USDT2 */
3187 HOTSPOT_JNI_GETSTRINGCHARS_RETURN(buf);
3188 #endif /* USDT2 */
3189 return buf;
3190 JNI_END
3191
3192
3193 JNI_QUICK_ENTRY(void, jni_ReleaseStringChars(JNIEnv *env, jstring str, const jchar *chars))
3194 JNIWrapper("ReleaseStringChars");
3195 #ifndef USDT2
3196 DTRACE_PROBE3(hotspot_jni, ReleaseStringChars__entry, env, str, chars);
3197 #else /* USDT2 */
3198 HOTSPOT_JNI_RELEASESTRINGCHARS_ENTRY(env, str, (uint16_t *) chars);
3199 #endif /* USDT2 */
3200 //%note jni_6
3201 if (chars != NULL) {
3202 // Since String objects are supposed to be immutable, don't copy any
3203 // new data back. A bad user will have to go after the char array.
3204 FreeHeap((void*) chars);
3205 }
3206 #ifndef USDT2
3207 DTRACE_PROBE(hotspot_jni, ReleaseStringChars__return);
3208 #else /* USDT2 */
3209 HOTSPOT_JNI_RELEASESTRINGCHARS_RETURN();
3210 #endif /* USDT2 */
3211 JNI_END
3212
3213
3214 // UTF Interface
3215
3216 #ifndef USDT2
3217 DT_RETURN_MARK_DECL(NewStringUTF, jstring);
3218 #else /* USDT2 */
3219 DT_RETURN_MARK_DECL(NewStringUTF, jstring
3220 , HOTSPOT_JNI_NEWSTRINGUTF_RETURN(_ret_ref));
3221 #endif /* USDT2 */
3222
3223 JNI_ENTRY(jstring, jni_NewStringUTF(JNIEnv *env, const char *bytes))
3224 JNIWrapper("NewStringUTF");
3225 #ifndef USDT2
3226 DTRACE_PROBE2(hotspot_jni, NewStringUTF__entry, env, bytes);
3227 #else /* USDT2 */
3228 HOTSPOT_JNI_NEWSTRINGUTF_ENTRY(env, (char *) bytes);
3229 #endif /* USDT2 */
3230 jstring ret;
3231 DT_RETURN_MARK(NewStringUTF, jstring, (const jstring&)ret);
3232
3233 oop result = java_lang_String::create_oop_from_str((char*) bytes, CHECK_NULL);
3234 ret = (jstring) JNIHandles::make_local(env, result);
3235 return ret;
3236 JNI_END
3237
3238
3239 JNI_ENTRY(jsize, jni_GetStringUTFLength(JNIEnv *env, jstring string))
3240 JNIWrapper("GetStringUTFLength");
3241 #ifndef USDT2
3242 DTRACE_PROBE2(hotspot_jni, GetStringUTFLength__entry, env, string);
3243 #else /* USDT2 */
3244 HOTSPOT_JNI_GETSTRINGUTFLENGTH_ENTRY(env, string);
3245 #endif /* USDT2 */
3246 jsize ret = 0;
3247 oop java_string = JNIHandles::resolve_non_null(string);
3248 if (java_lang_String::value(java_string) != NULL) {
3249 ret = java_lang_String::utf8_length(java_string);
3250 }
3251 #ifndef USDT2
3252 DTRACE_PROBE1(hotspot_jni, GetStringUTFLength__return, ret);
3253 #else /* USDT2 */
3254 HOTSPOT_JNI_GETSTRINGUTFLENGTH_RETURN(ret);
3255 #endif /* USDT2 */
3256 return ret;
3257 JNI_END
3258
3259
3260 JNI_ENTRY(const char*, jni_GetStringUTFChars(JNIEnv *env, jstring string, jboolean *isCopy))
3261 JNIWrapper("GetStringUTFChars");
3262 #ifndef USDT2
3263 DTRACE_PROBE3(hotspot_jni, GetStringUTFChars__entry, env, string, isCopy);
3264 #else /* USDT2 */
3265 HOTSPOT_JNI_GETSTRINGUTFCHARS_ENTRY(env, string, (uintptr_t *) isCopy);
3266 #endif /* USDT2 */
3267 char* result = NULL;
3268 oop java_string = JNIHandles::resolve_non_null(string);
3269 if (java_lang_String::value(java_string) != NULL) {
3270 size_t length = java_lang_String::utf8_length(java_string);
3271 /* JNI Specification states return NULL on OOM */
3272 result = AllocateHeap(length + 1, mtInternal, 0, AllocFailStrategy::RETURN_NULL);
3273 if (result != NULL) {
3274 java_lang_String::as_utf8_string(java_string, result, (int) length + 1);
3275 if (isCopy != NULL) {
3276 *isCopy = JNI_TRUE;
3277 }
3278 }
3279 }
3280 #ifndef USDT2
3281 DTRACE_PROBE1(hotspot_jni, GetStringUTFChars__return, result);
3282 #else /* USDT2 */
3283 HOTSPOT_JNI_GETSTRINGUTFCHARS_RETURN(result);
3284 #endif /* USDT2 */
3285 return result;
3286 JNI_END
3287
3288
3289 JNI_LEAF(void, jni_ReleaseStringUTFChars(JNIEnv *env, jstring str, const char *chars))
3290 JNIWrapper("ReleaseStringUTFChars");
3291 #ifndef USDT2
3292 DTRACE_PROBE3(hotspot_jni, ReleaseStringUTFChars__entry, env, str, chars);
3293 #else /* USDT2 */
3294 HOTSPOT_JNI_RELEASESTRINGUTFCHARS_ENTRY(env, str, (char *) chars);
3295 #endif /* USDT2 */
3296 if (chars != NULL) {
3297 FreeHeap((char*) chars);
3298 }
3299 #ifndef USDT2
3300 DTRACE_PROBE(hotspot_jni, ReleaseStringUTFChars__return);
3301 #else /* USDT2 */
3302 HOTSPOT_JNI_RELEASESTRINGUTFCHARS_RETURN();
3303 #endif /* USDT2 */
3304 JNI_END
3305
3306
3307 JNI_QUICK_ENTRY(jsize, jni_GetArrayLength(JNIEnv *env, jarray array))
3308 JNIWrapper("GetArrayLength");
3309 #ifndef USDT2
3310 DTRACE_PROBE2(hotspot_jni, GetArrayLength__entry, env, array);
3311 #else /* USDT2 */
3312 HOTSPOT_JNI_GETARRAYLENGTH_ENTRY(env, array);
3313 #endif /* USDT2 */
3314 arrayOop a = arrayOop(JNIHandles::resolve_non_null(array));
3315 assert(a->is_array(), "must be array");
3316 jsize ret = a->length();
3317 #ifndef USDT2
3318 DTRACE_PROBE1(hotspot_jni, GetArrayLength__return, ret);
3319 #else /* USDT2 */
3320 HOTSPOT_JNI_GETARRAYLENGTH_RETURN(ret);
3321 #endif /* USDT2 */
3322 return ret;
3323 JNI_END
3324
3325
3326 //
3327 // Object Array Operations
3328 //
3329
3330 #ifndef USDT2
3331 DT_RETURN_MARK_DECL(NewObjectArray, jobjectArray);
3332 #else /* USDT2 */
3333 DT_RETURN_MARK_DECL(NewObjectArray, jobjectArray
3334 , HOTSPOT_JNI_NEWOBJECTARRAY_RETURN(_ret_ref));
3335 #endif /* USDT2 */
3336
3337 JNI_ENTRY(jobjectArray, jni_NewObjectArray(JNIEnv *env, jsize length, jclass elementClass, jobject initialElement))
3338 JNIWrapper("NewObjectArray");
3339 #ifndef USDT2
3340 DTRACE_PROBE4(hotspot_jni, NewObjectArray__entry, env, length, elementClass, initialElement);
3341 #else /* USDT2 */
3342 HOTSPOT_JNI_NEWOBJECTARRAY_ENTRY(env, length, elementClass, initialElement);
3343 #endif /* USDT2 */
3344 jobjectArray ret = NULL;
3345 DT_RETURN_MARK(NewObjectArray, jobjectArray, (const jobjectArray&)ret);
3346 KlassHandle ek(THREAD, java_lang_Class::as_Klass(JNIHandles::resolve_non_null(elementClass)));
3347 Klass* ako = ek()->array_klass(CHECK_NULL);
3348 KlassHandle ak = KlassHandle(THREAD, ako);
3349 ObjArrayKlass::cast(ak())->initialize(CHECK_NULL);
3350 objArrayOop result = ObjArrayKlass::cast(ak())->allocate(length, CHECK_NULL);
3351 oop initial_value = JNIHandles::resolve(initialElement);
3352 if (initial_value != NULL) { // array already initialized with NULL
3353 for (int index = 0; index < length; index++) {
3354 result->obj_at_put(index, initial_value);
3355 }
3356 }
3357 ret = (jobjectArray) JNIHandles::make_local(env, result);
3358 return ret;
3359 JNI_END
3360
3361 #ifndef USDT2
3362 DT_RETURN_MARK_DECL(GetObjectArrayElement, jobject);
3363 #else /* USDT2 */
3364 DT_RETURN_MARK_DECL(GetObjectArrayElement, jobject
3365 , HOTSPOT_JNI_GETOBJECTARRAYELEMENT_RETURN(_ret_ref));
3366 #endif /* USDT2 */
3367
3368 JNI_ENTRY(jobject, jni_GetObjectArrayElement(JNIEnv *env, jobjectArray array, jsize index))
3369 JNIWrapper("GetObjectArrayElement");
3370 #ifndef USDT2
3371 DTRACE_PROBE3(hotspot_jni, GetObjectArrayElement__entry, env, array, index);
3372 #else /* USDT2 */
3373 HOTSPOT_JNI_GETOBJECTARRAYELEMENT_ENTRY(env, array, index);
3374 #endif /* USDT2 */
3375 jobject ret = NULL;
3376 DT_RETURN_MARK(GetObjectArrayElement, jobject, (const jobject&)ret);
3377 objArrayOop a = objArrayOop(JNIHandles::resolve_non_null(array));
3378 if (a->is_within_bounds(index)) {
3379 ret = JNIHandles::make_local(env, a->obj_at(index));
3380 return ret;
3381 } else {
3382 char buf[jintAsStringSize];
3383 sprintf(buf, "%d", index);
3384 THROW_MSG_0(vmSymbols::java_lang_ArrayIndexOutOfBoundsException(), buf);
3385 }
3386 JNI_END
3387
3388 #ifndef USDT2
3389 DT_VOID_RETURN_MARK_DECL(SetObjectArrayElement);
3390 #else /* USDT2 */
3391 DT_VOID_RETURN_MARK_DECL(SetObjectArrayElement
3392 , HOTSPOT_JNI_SETOBJECTARRAYELEMENT_RETURN());
3393 #endif /* USDT2 */
3394
3395 JNI_ENTRY(void, jni_SetObjectArrayElement(JNIEnv *env, jobjectArray array, jsize index, jobject value))
3396 JNIWrapper("SetObjectArrayElement");
3397 #ifndef USDT2
3398 DTRACE_PROBE4(hotspot_jni, SetObjectArrayElement__entry, env, array, index, value);
3399 #else /* USDT2 */
3400 HOTSPOT_JNI_SETOBJECTARRAYELEMENT_ENTRY(env, array, index, value);
3401 #endif /* USDT2 */
3402 DT_VOID_RETURN_MARK(SetObjectArrayElement);
3403
3404 objArrayOop a = objArrayOop(JNIHandles::resolve_non_null(array));
3405 oop v = JNIHandles::resolve(value);
3406 if (a->is_within_bounds(index)) {
3407 if (v == NULL || v->is_a(ObjArrayKlass::cast(a->klass())->element_klass())) {
3408 a->obj_at_put(index, v);
3409 } else {
3410 THROW(vmSymbols::java_lang_ArrayStoreException());
3411 }
3412 } else {
3413 char buf[jintAsStringSize];
3414 sprintf(buf, "%d", index);
3415 THROW_MSG(vmSymbols::java_lang_ArrayIndexOutOfBoundsException(), buf);
3416 }
3417 JNI_END
3418
3419
3420 #ifndef USDT2
3421 #define DEFINE_NEWSCALARARRAY(Return,Allocator,Result) \
3422 \
3423 DT_RETURN_MARK_DECL(New##Result##Array, Return); \
3424 \
3425 JNI_ENTRY(Return, \
3426 jni_New##Result##Array(JNIEnv *env, jsize len)) \
3427 JNIWrapper("New" XSTR(Result) "Array"); \
3428 DTRACE_PROBE2(hotspot_jni, New##Result##Array__entry, env, len);\
3429 Return ret = NULL;\
3430 DT_RETURN_MARK(New##Result##Array, Return, (const Return&)ret);\
3431 \
3432 oop obj= oopFactory::Allocator(len, CHECK_0); \
3433 ret = (Return) JNIHandles::make_local(env, obj); \
3434 return ret;\
3435 JNI_END
3436
3437 DEFINE_NEWSCALARARRAY(jbooleanArray, new_boolArray, Boolean)
3438 DEFINE_NEWSCALARARRAY(jbyteArray, new_byteArray, Byte)
3439 DEFINE_NEWSCALARARRAY(jshortArray, new_shortArray, Short)
3440 DEFINE_NEWSCALARARRAY(jcharArray, new_charArray, Char)
3441 DEFINE_NEWSCALARARRAY(jintArray, new_intArray, Int)
3442 DEFINE_NEWSCALARARRAY(jlongArray, new_longArray, Long)
3443 DEFINE_NEWSCALARARRAY(jfloatArray, new_singleArray, Float)
3444 DEFINE_NEWSCALARARRAY(jdoubleArray, new_doubleArray, Double)
3445
3446 #else /* USDT2 */
3447
3448 #define DEFINE_NEWSCALARARRAY(Return,Allocator,Result \
3449 ,EntryProbe,ReturnProbe) \
3450 \
3451 DT_RETURN_MARK_DECL(New##Result##Array, Return \
3452 , ReturnProbe); \
3453 \
3454 JNI_ENTRY(Return, \
3455 jni_New##Result##Array(JNIEnv *env, jsize len)) \
3456 JNIWrapper("New" XSTR(Result) "Array"); \
3457 EntryProbe; \
3458 Return ret = NULL;\
3459 DT_RETURN_MARK(New##Result##Array, Return, (const Return&)ret);\
3460 \
3461 oop obj= oopFactory::Allocator(len, CHECK_0); \
3462 ret = (Return) JNIHandles::make_local(env, obj); \
3463 return ret;\
3464 JNI_END
3465
3466 DEFINE_NEWSCALARARRAY(jbooleanArray, new_boolArray, Boolean,
3467 HOTSPOT_JNI_NEWBOOLEANARRAY_ENTRY(env, len),
3468 HOTSPOT_JNI_NEWBOOLEANARRAY_RETURN(_ret_ref))
3469 DEFINE_NEWSCALARARRAY(jbyteArray, new_byteArray, Byte,
3470 HOTSPOT_JNI_NEWBYTEARRAY_ENTRY(env, len),
3471 HOTSPOT_JNI_NEWBYTEARRAY_RETURN(_ret_ref))
3472 DEFINE_NEWSCALARARRAY(jshortArray, new_shortArray, Short,
3473 HOTSPOT_JNI_NEWSHORTARRAY_ENTRY(env, len),
3474 HOTSPOT_JNI_NEWSHORTARRAY_RETURN(_ret_ref))
3475 DEFINE_NEWSCALARARRAY(jcharArray, new_charArray, Char,
3476 HOTSPOT_JNI_NEWCHARARRAY_ENTRY(env, len),
3477 HOTSPOT_JNI_NEWCHARARRAY_RETURN(_ret_ref))
3478 DEFINE_NEWSCALARARRAY(jintArray, new_intArray, Int,
3479 HOTSPOT_JNI_NEWINTARRAY_ENTRY(env, len),
3480 HOTSPOT_JNI_NEWINTARRAY_RETURN(_ret_ref))
3481 DEFINE_NEWSCALARARRAY(jlongArray, new_longArray, Long,
3482 HOTSPOT_JNI_NEWLONGARRAY_ENTRY(env, len),
3483 HOTSPOT_JNI_NEWLONGARRAY_RETURN(_ret_ref))
3484 DEFINE_NEWSCALARARRAY(jfloatArray, new_singleArray, Float,
3485 HOTSPOT_JNI_NEWFLOATARRAY_ENTRY(env, len),
3486 HOTSPOT_JNI_NEWFLOATARRAY_RETURN(_ret_ref))
3487 DEFINE_NEWSCALARARRAY(jdoubleArray, new_doubleArray, Double,
3488 HOTSPOT_JNI_NEWDOUBLEARRAY_ENTRY(env, len),
3489 HOTSPOT_JNI_NEWDOUBLEARRAY_RETURN(_ret_ref))
3490 #endif /* USDT2 */
3491
3492 // Return an address which will fault if the caller writes to it.
3493
3494 static char* get_bad_address() {
3495 static char* bad_address = NULL;
3496 if (bad_address == NULL) {
3497 size_t size = os::vm_allocation_granularity();
3498 bad_address = os::reserve_memory(size);
3499 if (bad_address != NULL) {
3500 os::protect_memory(bad_address, size, os::MEM_PROT_READ,
3501 /*is_committed*/false);
3502 }
3503 }
3504 return bad_address;
3505 }
3506
3507
3508 #ifndef USDT2
3509 #define DEFINE_GETSCALARARRAYELEMENTS(ElementTag,ElementType,Result, Tag) \
3510 \
3511 JNI_QUICK_ENTRY(ElementType*, \
3512 jni_Get##Result##ArrayElements(JNIEnv *env, ElementType##Array array, jboolean *isCopy)) \
3513 JNIWrapper("Get" XSTR(Result) "ArrayElements"); \
3514 DTRACE_PROBE3(hotspot_jni, Get##Result##ArrayElements__entry, env, array, isCopy);\
3515 /* allocate an chunk of memory in c land */ \
3516 typeArrayOop a = typeArrayOop(JNIHandles::resolve_non_null(array)); \
3517 ElementType* result; \
3518 int len = a->length(); \
3519 if (len == 0) { \
3520 /* Empty array: legal but useless, can't return NULL. \
3521 * Return a pointer to something useless. \
3522 * Avoid asserts in typeArrayOop. */ \
3523 result = (ElementType*)get_bad_address(); \
3524 } else { \
3525 /* JNI Specification states return NULL on OOM */ \
3526 result = NEW_C_HEAP_ARRAY_RETURN_NULL(ElementType, len, mtInternal); \
3527 if (result != NULL) { \
3528 /* copy the array to the c chunk */ \
3529 memcpy(result, a->Tag##_at_addr(0), sizeof(ElementType)*len); \
3530 if (isCopy) { \
3531 *isCopy = JNI_TRUE; \
3532 } \
3533 } \
3534 } \
3535 DTRACE_PROBE1(hotspot_jni, Get##Result##ArrayElements__return, result);\
3536 return result; \
3537 JNI_END
3538
3539 DEFINE_GETSCALARARRAYELEMENTS(T_BOOLEAN, jboolean, Boolean, bool)
3540 DEFINE_GETSCALARARRAYELEMENTS(T_BYTE, jbyte, Byte, byte)
3541 DEFINE_GETSCALARARRAYELEMENTS(T_SHORT, jshort, Short, short)
3542 DEFINE_GETSCALARARRAYELEMENTS(T_CHAR, jchar, Char, char)
3543 DEFINE_GETSCALARARRAYELEMENTS(T_INT, jint, Int, int)
3544 DEFINE_GETSCALARARRAYELEMENTS(T_LONG, jlong, Long, long)
3545 DEFINE_GETSCALARARRAYELEMENTS(T_FLOAT, jfloat, Float, float)
3546 DEFINE_GETSCALARARRAYELEMENTS(T_DOUBLE, jdouble, Double, double)
3547
3548 #else /* USDT2 */
3549
3550 #define DEFINE_GETSCALARARRAYELEMENTS(ElementTag,ElementType,Result, Tag \
3551 , EntryProbe, ReturnProbe) \
3552 \
3553 JNI_QUICK_ENTRY(ElementType*, \
3554 jni_Get##Result##ArrayElements(JNIEnv *env, ElementType##Array array, jboolean *isCopy)) \
3555 JNIWrapper("Get" XSTR(Result) "ArrayElements"); \
3556 EntryProbe; \
3557 /* allocate an chunk of memory in c land */ \
3558 typeArrayOop a = typeArrayOop(JNIHandles::resolve_non_null(array)); \
3559 ElementType* result; \
3560 int len = a->length(); \
3561 if (len == 0) { \
3562 /* Empty array: legal but useless, can't return NULL. \
3563 * Return a pointer to something useless. \
3564 * Avoid asserts in typeArrayOop. */ \
3565 result = (ElementType*)get_bad_address(); \
3566 } else { \
3567 /* JNI Specification states return NULL on OOM */ \
3568 result = NEW_C_HEAP_ARRAY_RETURN_NULL(ElementType, len, mtInternal); \
3569 if (result != NULL) { \
3570 /* copy the array to the c chunk */ \
3571 memcpy(result, a->Tag##_at_addr(0), sizeof(ElementType)*len); \
3572 if (isCopy) { \
3573 *isCopy = JNI_TRUE; \
3574 } \
3575 } \
3576 } \
3577 ReturnProbe; \
3578 return result; \
3579 JNI_END
3580
3581 DEFINE_GETSCALARARRAYELEMENTS(T_BOOLEAN, jboolean, Boolean, bool
3582 , HOTSPOT_JNI_GETBOOLEANARRAYELEMENTS_ENTRY(env, array, (uintptr_t *) isCopy),
3583 HOTSPOT_JNI_GETBOOLEANARRAYELEMENTS_RETURN((uintptr_t*)result))
3584 DEFINE_GETSCALARARRAYELEMENTS(T_BYTE, jbyte, Byte, byte
3585 , HOTSPOT_JNI_GETBYTEARRAYELEMENTS_ENTRY(env, array, (uintptr_t *) isCopy),
3586 HOTSPOT_JNI_GETBYTEARRAYELEMENTS_RETURN((char*)result))
3587 DEFINE_GETSCALARARRAYELEMENTS(T_SHORT, jshort, Short, short
3588 , HOTSPOT_JNI_GETSHORTARRAYELEMENTS_ENTRY(env, (uint16_t*) array, (uintptr_t *) isCopy),
3589 HOTSPOT_JNI_GETSHORTARRAYELEMENTS_RETURN((uint16_t*)result))
3590 DEFINE_GETSCALARARRAYELEMENTS(T_CHAR, jchar, Char, char
3591 , HOTSPOT_JNI_GETCHARARRAYELEMENTS_ENTRY(env, (uint16_t*) array, (uintptr_t *) isCopy),
3592 HOTSPOT_JNI_GETCHARARRAYELEMENTS_RETURN(result))
3593 DEFINE_GETSCALARARRAYELEMENTS(T_INT, jint, Int, int
3594 , HOTSPOT_JNI_GETINTARRAYELEMENTS_ENTRY(env, array, (uintptr_t *) isCopy),
3595 HOTSPOT_JNI_GETINTARRAYELEMENTS_RETURN((uint32_t*)result))
3596 DEFINE_GETSCALARARRAYELEMENTS(T_LONG, jlong, Long, long
3597 , HOTSPOT_JNI_GETLONGARRAYELEMENTS_ENTRY(env, array, (uintptr_t *) isCopy),
3598 HOTSPOT_JNI_GETLONGARRAYELEMENTS_RETURN(((uintptr_t*)result)))
3599 // Float and double probes don't return value because dtrace doesn't currently support it
3600 DEFINE_GETSCALARARRAYELEMENTS(T_FLOAT, jfloat, Float, float
3601 , HOTSPOT_JNI_GETFLOATARRAYELEMENTS_ENTRY(env, array, (uintptr_t *) isCopy),
3602 HOTSPOT_JNI_GETFLOATARRAYELEMENTS_RETURN(result))
3603 DEFINE_GETSCALARARRAYELEMENTS(T_DOUBLE, jdouble, Double, double
3604 , HOTSPOT_JNI_GETDOUBLEARRAYELEMENTS_ENTRY(env, array, (uintptr_t *) isCopy),
3605 HOTSPOT_JNI_GETDOUBLEARRAYELEMENTS_RETURN(result))
3606 #endif /* USDT2 */
3607
3608 #ifndef USDT2
3609 #define DEFINE_RELEASESCALARARRAYELEMENTS(ElementTag,ElementType,Result,Tag) \
3610 \
3611 JNI_QUICK_ENTRY(void, \
3612 jni_Release##Result##ArrayElements(JNIEnv *env, ElementType##Array array, \
3613 ElementType *buf, jint mode)) \
3614 JNIWrapper("Release" XSTR(Result) "ArrayElements"); \
3615 DTRACE_PROBE4(hotspot_jni, Release##Result##ArrayElements__entry, env, array, buf, mode);\
3616 typeArrayOop a = typeArrayOop(JNIHandles::resolve_non_null(array)); \
3617 int len = a->length(); \
3618 if (len != 0) { /* Empty array: nothing to free or copy. */ \
3619 if ((mode == 0) || (mode == JNI_COMMIT)) { \
3620 memcpy(a->Tag##_at_addr(0), buf, sizeof(ElementType)*len); \
3621 } \
3622 if ((mode == 0) || (mode == JNI_ABORT)) { \
3623 FreeHeap(buf); \
3624 } \
3625 } \
3626 DTRACE_PROBE(hotspot_jni, Release##Result##ArrayElements__return);\
3627 JNI_END
3628
3629 DEFINE_RELEASESCALARARRAYELEMENTS(T_BOOLEAN, jboolean, Boolean, bool)
3630 DEFINE_RELEASESCALARARRAYELEMENTS(T_BYTE, jbyte, Byte, byte)
3631 DEFINE_RELEASESCALARARRAYELEMENTS(T_SHORT, jshort, Short, short)
3632 DEFINE_RELEASESCALARARRAYELEMENTS(T_CHAR, jchar, Char, char)
3633 DEFINE_RELEASESCALARARRAYELEMENTS(T_INT, jint, Int, int)
3634 DEFINE_RELEASESCALARARRAYELEMENTS(T_LONG, jlong, Long, long)
3635 DEFINE_RELEASESCALARARRAYELEMENTS(T_FLOAT, jfloat, Float, float)
3636 DEFINE_RELEASESCALARARRAYELEMENTS(T_DOUBLE, jdouble, Double, double)
3637
3638 #else /* USDT2 */
3639
3640 #define DEFINE_RELEASESCALARARRAYELEMENTS(ElementTag,ElementType,Result,Tag \
3641 , EntryProbe, ReturnProbe);\
3642 \
3643 JNI_QUICK_ENTRY(void, \
3644 jni_Release##Result##ArrayElements(JNIEnv *env, ElementType##Array array, \
3645 ElementType *buf, jint mode)) \
3646 JNIWrapper("Release" XSTR(Result) "ArrayElements"); \
3647 EntryProbe; \
3648 typeArrayOop a = typeArrayOop(JNIHandles::resolve_non_null(array)); \
3649 int len = a->length(); \
3650 if (len != 0) { /* Empty array: nothing to free or copy. */ \
3651 if ((mode == 0) || (mode == JNI_COMMIT)) { \
3652 memcpy(a->Tag##_at_addr(0), buf, sizeof(ElementType)*len); \
3653 } \
3654 if ((mode == 0) || (mode == JNI_ABORT)) { \
3655 FreeHeap(buf); \
3656 } \
3657 } \
3658 ReturnProbe; \
3659 JNI_END
3660
3661 DEFINE_RELEASESCALARARRAYELEMENTS(T_BOOLEAN, jboolean, Boolean, bool
3662 , HOTSPOT_JNI_RELEASEBOOLEANARRAYELEMENTS_ENTRY(env, array, (uintptr_t *) buf, mode),
3663 HOTSPOT_JNI_RELEASEBOOLEANARRAYELEMENTS_RETURN())
3664 DEFINE_RELEASESCALARARRAYELEMENTS(T_BYTE, jbyte, Byte, byte
3665 , HOTSPOT_JNI_RELEASEBYTEARRAYELEMENTS_ENTRY(env, array, (char *) buf, mode),
3666 HOTSPOT_JNI_RELEASEBYTEARRAYELEMENTS_RETURN())
3667 DEFINE_RELEASESCALARARRAYELEMENTS(T_SHORT, jshort, Short, short
3668 , HOTSPOT_JNI_RELEASESHORTARRAYELEMENTS_ENTRY(env, array, (uint16_t *) buf, mode),
3669 HOTSPOT_JNI_RELEASESHORTARRAYELEMENTS_RETURN())
3670 DEFINE_RELEASESCALARARRAYELEMENTS(T_CHAR, jchar, Char, char
3671 , HOTSPOT_JNI_RELEASECHARARRAYELEMENTS_ENTRY(env, array, (uint16_t *) buf, mode),
3672 HOTSPOT_JNI_RELEASECHARARRAYELEMENTS_RETURN())
3673 DEFINE_RELEASESCALARARRAYELEMENTS(T_INT, jint, Int, int
3674 , HOTSPOT_JNI_RELEASEINTARRAYELEMENTS_ENTRY(env, array, (uint32_t *) buf, mode),
3675 HOTSPOT_JNI_RELEASEINTARRAYELEMENTS_RETURN())
3676 DEFINE_RELEASESCALARARRAYELEMENTS(T_LONG, jlong, Long, long
3677 , HOTSPOT_JNI_RELEASELONGARRAYELEMENTS_ENTRY(env, array, (uintptr_t *) buf, mode),
3678 HOTSPOT_JNI_RELEASELONGARRAYELEMENTS_RETURN())
3679 DEFINE_RELEASESCALARARRAYELEMENTS(T_FLOAT, jfloat, Float, float
3680 , HOTSPOT_JNI_RELEASEFLOATARRAYELEMENTS_ENTRY(env, array, (float *) buf, mode),
3681 HOTSPOT_JNI_RELEASEFLOATARRAYELEMENTS_RETURN())
3682 DEFINE_RELEASESCALARARRAYELEMENTS(T_DOUBLE, jdouble, Double, double
3683 , HOTSPOT_JNI_RELEASEDOUBLEARRAYELEMENTS_ENTRY(env, array, (double *) buf, mode),
3684 HOTSPOT_JNI_RELEASEDOUBLEARRAYELEMENTS_RETURN())
3685 #endif /* USDT2 */
3686
3687 #ifndef USDT2
3688 #define DEFINE_GETSCALARARRAYREGION(ElementTag,ElementType,Result, Tag) \
3689 DT_VOID_RETURN_MARK_DECL(Get##Result##ArrayRegion);\
3690 \
3691 JNI_ENTRY(void, \
3692 jni_Get##Result##ArrayRegion(JNIEnv *env, ElementType##Array array, jsize start, \
3693 jsize len, ElementType *buf)) \
3694 JNIWrapper("Get" XSTR(Result) "ArrayRegion"); \
3695 DTRACE_PROBE5(hotspot_jni, Get##Result##ArrayRegion__entry, env, array, start, len, buf);\
3696 DT_VOID_RETURN_MARK(Get##Result##ArrayRegion); \
3697 typeArrayOop src = typeArrayOop(JNIHandles::resolve_non_null(array)); \
3698 if (start < 0 || len < 0 || ((unsigned int)start + (unsigned int)len > (unsigned int)src->length())) { \
3699 THROW(vmSymbols::java_lang_ArrayIndexOutOfBoundsException()); \
3700 } else { \
3701 if (len > 0) { \
3702 int sc = TypeArrayKlass::cast(src->klass())->log2_element_size(); \
3703 memcpy((u_char*) buf, \
3704 (u_char*) src->Tag##_at_addr(start), \
3705 len << sc); \
3706 } \
3707 } \
3708 JNI_END
3709
3710 DEFINE_GETSCALARARRAYREGION(T_BOOLEAN, jboolean,Boolean, bool)
3711 DEFINE_GETSCALARARRAYREGION(T_BYTE, jbyte, Byte, byte)
3712 DEFINE_GETSCALARARRAYREGION(T_SHORT, jshort, Short, short)
3713 DEFINE_GETSCALARARRAYREGION(T_CHAR, jchar, Char, char)
3714 DEFINE_GETSCALARARRAYREGION(T_INT, jint, Int, int)
3715 DEFINE_GETSCALARARRAYREGION(T_LONG, jlong, Long, long)
3716 DEFINE_GETSCALARARRAYREGION(T_FLOAT, jfloat, Float, float)
3717 DEFINE_GETSCALARARRAYREGION(T_DOUBLE, jdouble, Double, double)
3718
3719 #else /* USDT2 */
3720
3721 #define DEFINE_GETSCALARARRAYREGION(ElementTag,ElementType,Result, Tag \
3722 , EntryProbe, ReturnProbe); \
3723 DT_VOID_RETURN_MARK_DECL(Get##Result##ArrayRegion \
3724 , ReturnProbe); \
3725 \
3726 JNI_ENTRY(void, \
3727 jni_Get##Result##ArrayRegion(JNIEnv *env, ElementType##Array array, jsize start, \
3728 jsize len, ElementType *buf)) \
3729 JNIWrapper("Get" XSTR(Result) "ArrayRegion"); \
3730 EntryProbe; \
3731 DT_VOID_RETURN_MARK(Get##Result##ArrayRegion); \
3732 typeArrayOop src = typeArrayOop(JNIHandles::resolve_non_null(array)); \
3733 if (start < 0 || len < 0 || ((unsigned int)start + (unsigned int)len > (unsigned int)src->length())) { \
3734 THROW(vmSymbols::java_lang_ArrayIndexOutOfBoundsException()); \
3735 } else { \
3736 if (len > 0) { \
3737 int sc = TypeArrayKlass::cast(src->klass())->log2_element_size(); \
3738 memcpy((u_char*) buf, \
3739 (u_char*) src->Tag##_at_addr(start), \
3740 len << sc); \
3741 } \
3742 } \
3743 JNI_END
3744
3745 DEFINE_GETSCALARARRAYREGION(T_BOOLEAN, jboolean,Boolean, bool
3746 , HOTSPOT_JNI_GETBOOLEANARRAYREGION_ENTRY(env, array, start, len, (uintptr_t *) buf),
3747 HOTSPOT_JNI_GETBOOLEANARRAYREGION_RETURN());
3748 DEFINE_GETSCALARARRAYREGION(T_BYTE, jbyte, Byte, byte
3749 , HOTSPOT_JNI_GETBYTEARRAYREGION_ENTRY(env, array, start, len, (char *) buf),
3750 HOTSPOT_JNI_GETBYTEARRAYREGION_RETURN());
3751 DEFINE_GETSCALARARRAYREGION(T_SHORT, jshort, Short, short
3752 , HOTSPOT_JNI_GETSHORTARRAYREGION_ENTRY(env, array, start, len, (uint16_t *) buf),
3753 HOTSPOT_JNI_GETSHORTARRAYREGION_RETURN());
3754 DEFINE_GETSCALARARRAYREGION(T_CHAR, jchar, Char, char
3755 , HOTSPOT_JNI_GETCHARARRAYREGION_ENTRY(env, array, start, len, (uint16_t*) buf),
3756 HOTSPOT_JNI_GETCHARARRAYREGION_RETURN());
3757 DEFINE_GETSCALARARRAYREGION(T_INT, jint, Int, int
3758 , HOTSPOT_JNI_GETINTARRAYREGION_ENTRY(env, array, start, len, (uint32_t*) buf),
3759 HOTSPOT_JNI_GETINTARRAYREGION_RETURN());
3760 DEFINE_GETSCALARARRAYREGION(T_LONG, jlong, Long, long
3761 , HOTSPOT_JNI_GETLONGARRAYREGION_ENTRY(env, array, start, len, (uintptr_t *) buf),
3762 HOTSPOT_JNI_GETLONGARRAYREGION_RETURN());
3763 DEFINE_GETSCALARARRAYREGION(T_FLOAT, jfloat, Float, float
3764 , HOTSPOT_JNI_GETFLOATARRAYREGION_ENTRY(env, array, start, len, (float *) buf),
3765 HOTSPOT_JNI_GETFLOATARRAYREGION_RETURN());
3766 DEFINE_GETSCALARARRAYREGION(T_DOUBLE, jdouble, Double, double
3767 , HOTSPOT_JNI_GETDOUBLEARRAYREGION_ENTRY(env, array, start, len, (double *) buf),
3768 HOTSPOT_JNI_GETDOUBLEARRAYREGION_RETURN());
3769 #endif /* USDT2 */
3770
3771 #ifndef USDT2
3772 #define DEFINE_SETSCALARARRAYREGION(ElementTag,ElementType,Result, Tag) \
3773 DT_VOID_RETURN_MARK_DECL(Set##Result##ArrayRegion);\
3774 \
3775 JNI_ENTRY(void, \
3776 jni_Set##Result##ArrayRegion(JNIEnv *env, ElementType##Array array, jsize start, \
3777 jsize len, const ElementType *buf)) \
3778 JNIWrapper("Set" XSTR(Result) "ArrayRegion"); \
3779 DTRACE_PROBE5(hotspot_jni, Set##Result##ArrayRegion__entry, env, array, start, len, buf);\
3780 DT_VOID_RETURN_MARK(Set##Result##ArrayRegion); \
3781 typeArrayOop dst = typeArrayOop(JNIHandles::resolve_non_null(array)); \
3782 if (start < 0 || len < 0 || ((unsigned int)start + (unsigned int)len > (unsigned int)dst->length())) { \
3783 THROW(vmSymbols::java_lang_ArrayIndexOutOfBoundsException()); \
3784 } else { \
3785 if (len > 0) { \
3786 int sc = TypeArrayKlass::cast(dst->klass())->log2_element_size(); \
3787 memcpy((u_char*) dst->Tag##_at_addr(start), \
3788 (u_char*) buf, \
3789 len << sc); \
3790 } \
3791 } \
3792 JNI_END
3793
3794 DEFINE_SETSCALARARRAYREGION(T_BOOLEAN, jboolean, Boolean, bool)
3795 DEFINE_SETSCALARARRAYREGION(T_BYTE, jbyte, Byte, byte)
3796 DEFINE_SETSCALARARRAYREGION(T_SHORT, jshort, Short, short)
3797 DEFINE_SETSCALARARRAYREGION(T_CHAR, jchar, Char, char)
3798 DEFINE_SETSCALARARRAYREGION(T_INT, jint, Int, int)
3799 DEFINE_SETSCALARARRAYREGION(T_LONG, jlong, Long, long)
3800 DEFINE_SETSCALARARRAYREGION(T_FLOAT, jfloat, Float, float)
3801 DEFINE_SETSCALARARRAYREGION(T_DOUBLE, jdouble, Double, double)
3802
3803 #else /* USDT2 */
3804
3805 #define DEFINE_SETSCALARARRAYREGION(ElementTag,ElementType,Result, Tag \
3806 , EntryProbe, ReturnProbe); \
3807 DT_VOID_RETURN_MARK_DECL(Set##Result##ArrayRegion \
3808 ,ReturnProbe); \
3809 \
3810 JNI_ENTRY(void, \
3811 jni_Set##Result##ArrayRegion(JNIEnv *env, ElementType##Array array, jsize start, \
3812 jsize len, const ElementType *buf)) \
3813 JNIWrapper("Set" XSTR(Result) "ArrayRegion"); \
3814 EntryProbe; \
3815 DT_VOID_RETURN_MARK(Set##Result##ArrayRegion); \
3816 typeArrayOop dst = typeArrayOop(JNIHandles::resolve_non_null(array)); \
3817 if (start < 0 || len < 0 || ((unsigned int)start + (unsigned int)len > (unsigned int)dst->length())) { \
3818 THROW(vmSymbols::java_lang_ArrayIndexOutOfBoundsException()); \
3819 } else { \
3820 if (len > 0) { \
3821 int sc = TypeArrayKlass::cast(dst->klass())->log2_element_size(); \
3822 memcpy((u_char*) dst->Tag##_at_addr(start), \
3823 (u_char*) buf, \
3824 len << sc); \
3825 } \
3826 } \
3827 JNI_END
3828
3829 DEFINE_SETSCALARARRAYREGION(T_BOOLEAN, jboolean, Boolean, bool
3830 , HOTSPOT_JNI_SETBOOLEANARRAYREGION_ENTRY(env, array, start, len, (uintptr_t *)buf),
3831 HOTSPOT_JNI_SETBOOLEANARRAYREGION_RETURN())
3832 DEFINE_SETSCALARARRAYREGION(T_BYTE, jbyte, Byte, byte
3833 , HOTSPOT_JNI_SETBYTEARRAYREGION_ENTRY(env, array, start, len, (char *) buf),
3834 HOTSPOT_JNI_SETBYTEARRAYREGION_RETURN())
3835 DEFINE_SETSCALARARRAYREGION(T_SHORT, jshort, Short, short
3836 , HOTSPOT_JNI_SETSHORTARRAYREGION_ENTRY(env, array, start, len, (uint16_t *) buf),
3837 HOTSPOT_JNI_SETSHORTARRAYREGION_RETURN())
3838 DEFINE_SETSCALARARRAYREGION(T_CHAR, jchar, Char, char
3839 , HOTSPOT_JNI_SETCHARARRAYREGION_ENTRY(env, array, start, len, (uint16_t *) buf),
3840 HOTSPOT_JNI_SETCHARARRAYREGION_RETURN())
3841 DEFINE_SETSCALARARRAYREGION(T_INT, jint, Int, int
3842 , HOTSPOT_JNI_SETINTARRAYREGION_ENTRY(env, array, start, len, (uint32_t *) buf),
3843 HOTSPOT_JNI_SETINTARRAYREGION_RETURN())
3844 DEFINE_SETSCALARARRAYREGION(T_LONG, jlong, Long, long
3845 , HOTSPOT_JNI_SETLONGARRAYREGION_ENTRY(env, array, start, len, (uintptr_t *) buf),
3846 HOTSPOT_JNI_SETLONGARRAYREGION_RETURN())
3847 DEFINE_SETSCALARARRAYREGION(T_FLOAT, jfloat, Float, float
3848 , HOTSPOT_JNI_SETFLOATARRAYREGION_ENTRY(env, array, start, len, (float *) buf),
3849 HOTSPOT_JNI_SETFLOATARRAYREGION_RETURN())
3850 DEFINE_SETSCALARARRAYREGION(T_DOUBLE, jdouble, Double, double
3851 , HOTSPOT_JNI_SETDOUBLEARRAYREGION_ENTRY(env, array, start, len, (double *) buf),
3852 HOTSPOT_JNI_SETDOUBLEARRAYREGION_RETURN())
3853 #endif /* USDT2 */
3854
3855
3856 //
3857 // Interception of natives
3858 //
3859
3860 // The RegisterNatives call being attempted tried to register with a method that
3861 // is not native. Ask JVM TI what prefixes have been specified. Then check
3862 // to see if the native method is now wrapped with the prefixes. See the
3863 // SetNativeMethodPrefix(es) functions in the JVM TI Spec for details.
3864 static Method* find_prefixed_native(KlassHandle k,
3865 Symbol* name, Symbol* signature, TRAPS) {
3866 #if INCLUDE_JVMTI
3867 ResourceMark rm(THREAD);
3868 Method* method;
3869 int name_len = name->utf8_length();
3870 char* name_str = name->as_utf8();
3871 int prefix_count;
3872 char** prefixes = JvmtiExport::get_all_native_method_prefixes(&prefix_count);
3873 for (int i = 0; i < prefix_count; i++) {
3874 char* prefix = prefixes[i];
3875 int prefix_len = (int)strlen(prefix);
3876
3877 // try adding this prefix to the method name and see if it matches another method name
3878 int trial_len = name_len + prefix_len;
3879 char* trial_name_str = NEW_RESOURCE_ARRAY(char, trial_len + 1);
3880 strcpy(trial_name_str, prefix);
3881 strcat(trial_name_str, name_str);
3882 TempNewSymbol trial_name = SymbolTable::probe(trial_name_str, trial_len);
3883 if (trial_name == NULL) {
3884 continue; // no such symbol, so this prefix wasn't used, try the next prefix
3885 }
3886 method = k()->lookup_method(trial_name, signature);
3887 if (method == NULL) {
3888 continue; // signature doesn't match, try the next prefix
3889 }
3890 if (method->is_native()) {
3891 method->set_is_prefixed_native();
3892 return method; // wahoo, we found a prefixed version of the method, return it
3893 }
3894 // found as non-native, so prefix is good, add it, probably just need more prefixes
3895 name_len = trial_len;
3896 name_str = trial_name_str;
3897 }
3898 #endif // INCLUDE_JVMTI
3899 return NULL; // not found
3900 }
3901
3902 static bool register_native(KlassHandle k, Symbol* name, Symbol* signature, address entry, TRAPS) {
3903 Method* method = k()->lookup_method(name, signature);
3904 if (method == NULL) {
3905 ResourceMark rm;
3906 stringStream st;
3907 st.print("Method %s name or signature does not match",
3908 Method::name_and_sig_as_C_string(k(), name, signature));
3909 THROW_MSG_(vmSymbols::java_lang_NoSuchMethodError(), st.as_string(), false);
3910 }
3911 if (!method->is_native()) {
3912 // trying to register to a non-native method, see if a JVM TI agent has added prefix(es)
3913 method = find_prefixed_native(k, name, signature, THREAD);
3914 if (method == NULL) {
3915 ResourceMark rm;
3916 stringStream st;
3917 st.print("Method %s is not declared as native",
3918 Method::name_and_sig_as_C_string(k(), name, signature));
3919 THROW_MSG_(vmSymbols::java_lang_NoSuchMethodError(), st.as_string(), false);
3920 }
3921 }
3922
3923 if (entry != NULL) {
3924 method->set_native_function(entry,
3925 Method::native_bind_event_is_interesting);
3926 } else {
3927 method->clear_native_function();
3928 }
3929 if (PrintJNIResolving) {
3930 ResourceMark rm(THREAD);
3931 tty->print_cr("[Registering JNI native method %s.%s]",
3932 method->method_holder()->external_name(),
3933 method->name()->as_C_string());
3934 }
3935 return true;
3936 }
3937
3938 #ifndef USDT2
3939 DT_RETURN_MARK_DECL(RegisterNatives, jint);
3940 #else /* USDT2 */
3941 DT_RETURN_MARK_DECL(RegisterNatives, jint
3942 , HOTSPOT_JNI_REGISTERNATIVES_RETURN(_ret_ref));
3943 #endif /* USDT2 */
3944
3945 JNI_ENTRY(jint, jni_RegisterNatives(JNIEnv *env, jclass clazz,
3946 const JNINativeMethod *methods,
3947 jint nMethods))
3948 JNIWrapper("RegisterNatives");
3949 #ifndef USDT2
3950 DTRACE_PROBE4(hotspot_jni, RegisterNatives__entry, env, clazz, methods, nMethods);
3951 #else /* USDT2 */
3952 HOTSPOT_JNI_REGISTERNATIVES_ENTRY(env, clazz, (void *) methods, nMethods);
3953 #endif /* USDT2 */
3954 jint ret = 0;
3955 DT_RETURN_MARK(RegisterNatives, jint, (const jint&)ret);
3956
3957 KlassHandle h_k(thread, java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz)));
3958
3959 for (int index = 0; index < nMethods; index++) {
3960 const char* meth_name = methods[index].name;
3961 const char* meth_sig = methods[index].signature;
3962 int meth_name_len = (int)strlen(meth_name);
3963
3964 // The class should have been loaded (we have an instance of the class
3965 // passed in) so the method and signature should already be in the symbol
3966 // table. If they're not there, the method doesn't exist.
3967 TempNewSymbol name = SymbolTable::probe(meth_name, meth_name_len);
3968 TempNewSymbol signature = SymbolTable::probe(meth_sig, (int)strlen(meth_sig));
3969
3970 if (name == NULL || signature == NULL) {
3971 ResourceMark rm;
3972 stringStream st;
3973 st.print("Method %s.%s%s not found", h_k()->external_name(), meth_name, meth_sig);
3974 // Must return negative value on failure
3975 THROW_MSG_(vmSymbols::java_lang_NoSuchMethodError(), st.as_string(), -1);
3976 }
3977
3978 bool res = register_native(h_k, name, signature,
3979 (address) methods[index].fnPtr, THREAD);
3980 if (!res) {
3981 ret = -1;
3982 break;
3983 }
3984 }
3985 return ret;
3986 JNI_END
3987
3988
3989 JNI_ENTRY(jint, jni_UnregisterNatives(JNIEnv *env, jclass clazz))
3990 JNIWrapper("UnregisterNatives");
3991 #ifndef USDT2
3992 DTRACE_PROBE2(hotspot_jni, UnregisterNatives__entry, env, clazz);
3993 #else /* USDT2 */
3994 HOTSPOT_JNI_UNREGISTERNATIVES_ENTRY(env, clazz);
3995 #endif /* USDT2 */
3996 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz));
3997 //%note jni_2
3998 if (k->oop_is_instance()) {
3999 for (int index = 0; index < InstanceKlass::cast(k)->methods()->length(); index++) {
4000 Method* m = InstanceKlass::cast(k)->methods()->at(index);
4001 if (m->is_native()) {
4002 m->clear_native_function();
4003 m->set_signature_handler(NULL);
4004 }
4005 }
4006 }
4007 #ifndef USDT2
4008 DTRACE_PROBE1(hotspot_jni, UnregisterNatives__return, 0);
4009 #else /* USDT2 */
4010 HOTSPOT_JNI_UNREGISTERNATIVES_RETURN(0);
4011 #endif /* USDT2 */
4012 return 0;
4013 JNI_END
4014
4015 //
4016 // Monitor functions
4017 //
4018
4019 #ifndef USDT2
4020 DT_RETURN_MARK_DECL(MonitorEnter, jint);
4021 #else /* USDT2 */
4022 DT_RETURN_MARK_DECL(MonitorEnter, jint
4023 , HOTSPOT_JNI_MONITORENTER_RETURN(_ret_ref));
4024 #endif /* USDT2 */
4025
4026 JNI_ENTRY(jint, jni_MonitorEnter(JNIEnv *env, jobject jobj))
4027 #ifndef USDT2
4028 DTRACE_PROBE2(hotspot_jni, MonitorEnter__entry, env, jobj);
4029 #else /* USDT2 */
4030 HOTSPOT_JNI_MONITORENTER_ENTRY(env, jobj);
4031 #endif /* USDT2 */
4032 jint ret = JNI_ERR;
4033 DT_RETURN_MARK(MonitorEnter, jint, (const jint&)ret);
4034
4035 // If the object is null, we can't do anything with it
4036 if (jobj == NULL) {
4037 THROW_(vmSymbols::java_lang_NullPointerException(), JNI_ERR);
4038 }
4039
4040 Handle obj(thread, JNIHandles::resolve_non_null(jobj));
4041 ObjectSynchronizer::jni_enter(obj, CHECK_(JNI_ERR));
4042 ret = JNI_OK;
4043 return ret;
4044 JNI_END
4045
4046 #ifndef USDT2
4047 DT_RETURN_MARK_DECL(MonitorExit, jint);
4048 #else /* USDT2 */
4049 DT_RETURN_MARK_DECL(MonitorExit, jint
4050 , HOTSPOT_JNI_MONITOREXIT_RETURN(_ret_ref));
4051 #endif /* USDT2 */
4052
4053 JNI_ENTRY(jint, jni_MonitorExit(JNIEnv *env, jobject jobj))
4054 #ifndef USDT2
4055 DTRACE_PROBE2(hotspot_jni, MonitorExit__entry, env, jobj);
4056 #else /* USDT2 */
4057 HOTSPOT_JNI_MONITOREXIT_ENTRY(env, jobj);
4058 #endif /* USDT2 */
4059 jint ret = JNI_ERR;
4060 DT_RETURN_MARK(MonitorExit, jint, (const jint&)ret);
4061
4062 // Don't do anything with a null object
4063 if (jobj == NULL) {
4064 THROW_(vmSymbols::java_lang_NullPointerException(), JNI_ERR);
4065 }
4066
4067 Handle obj(THREAD, JNIHandles::resolve_non_null(jobj));
4068 ObjectSynchronizer::jni_exit(obj(), CHECK_(JNI_ERR));
4069
4070 ret = JNI_OK;
4071 return ret;
4072 JNI_END
4073
4074 //
4075 // Extensions
4076 //
4077
4078 #ifndef USDT2
4079 DT_VOID_RETURN_MARK_DECL(GetStringRegion);
4080 #else /* USDT2 */
4081 DT_VOID_RETURN_MARK_DECL(GetStringRegion
4082 , HOTSPOT_JNI_GETSTRINGREGION_RETURN());
4083 #endif /* USDT2 */
4084
4085 JNI_ENTRY(void, jni_GetStringRegion(JNIEnv *env, jstring string, jsize start, jsize len, jchar *buf))
4086 JNIWrapper("GetStringRegion");
4087 #ifndef USDT2
4088 DTRACE_PROBE5(hotspot_jni, GetStringRegion__entry, env, string, start, len, buf);
4089 #else /* USDT2 */
4090 HOTSPOT_JNI_GETSTRINGREGION_ENTRY(env, string, start, len, buf);
4091 #endif /* USDT2 */
4092 DT_VOID_RETURN_MARK(GetStringRegion);
4093 oop s = JNIHandles::resolve_non_null(string);
4094 int s_len = java_lang_String::length(s);
4095 if (start < 0 || len < 0 || start + len > s_len) {
4096 THROW(vmSymbols::java_lang_StringIndexOutOfBoundsException());
4097 } else {
4098 if (len > 0) {
4099 int s_offset = java_lang_String::offset(s);
4100 typeArrayOop s_value = java_lang_String::value(s);
4101 memcpy(buf, s_value->char_at_addr(s_offset+start), sizeof(jchar)*len);
4102 }
4103 }
4104 JNI_END
4105
4106 #ifndef USDT2
4107 DT_VOID_RETURN_MARK_DECL(GetStringUTFRegion);
4108 #else /* USDT2 */
4109 DT_VOID_RETURN_MARK_DECL(GetStringUTFRegion
4110 , HOTSPOT_JNI_GETSTRINGUTFREGION_RETURN());
4111 #endif /* USDT2 */
4112
4113 JNI_ENTRY(void, jni_GetStringUTFRegion(JNIEnv *env, jstring string, jsize start, jsize len, char *buf))
4114 JNIWrapper("GetStringUTFRegion");
4115 #ifndef USDT2
4116 DTRACE_PROBE5(hotspot_jni, GetStringUTFRegion__entry, env, string, start, len, buf);
4117 #else /* USDT2 */
4118 HOTSPOT_JNI_GETSTRINGUTFREGION_ENTRY(env, string, start, len, buf);
4119 #endif /* USDT2 */
4120 DT_VOID_RETURN_MARK(GetStringUTFRegion);
4121 oop s = JNIHandles::resolve_non_null(string);
4122 int s_len = java_lang_String::length(s);
4123 if (start < 0 || len < 0 || start + len > s_len) {
4124 THROW(vmSymbols::java_lang_StringIndexOutOfBoundsException());
4125 } else {
4126 //%note jni_7
4127 if (len > 0) {
4128 ResourceMark rm(THREAD);
4129 char *utf_region = java_lang_String::as_utf8_string(s, start, len);
4130 int utf_len = (int)strlen(utf_region);
4131 memcpy(buf, utf_region, utf_len);
4132 buf[utf_len] = 0;
4133 } else {
4134 // JDK null-terminates the buffer even in len is zero
4135 if (buf != NULL) {
4136 buf[0] = 0;
4137 }
4138 }
4139 }
4140 JNI_END
4141
4142
4143 JNI_ENTRY(void*, jni_GetPrimitiveArrayCritical(JNIEnv *env, jarray array, jboolean *isCopy))
4144 JNIWrapper("GetPrimitiveArrayCritical");
4145 #ifndef USDT2
4146 DTRACE_PROBE3(hotspot_jni, GetPrimitiveArrayCritical__entry, env, array, isCopy);
4147 #else /* USDT2 */
4148 HOTSPOT_JNI_GETPRIMITIVEARRAYCRITICAL_ENTRY(env, array, (uintptr_t *) isCopy);
4149 #endif /* USDT2 */
4150 GC_locker::lock_critical(thread);
4151 if (isCopy != NULL) {
4152 *isCopy = JNI_FALSE;
4153 }
4154 oop a = JNIHandles::resolve_non_null(array);
4155 assert(a->is_array(), "just checking");
4156 BasicType type;
4157 if (a->is_objArray()) {
4158 type = T_OBJECT;
4159 } else {
4160 type = TypeArrayKlass::cast(a->klass())->element_type();
4161 }
4162 void* ret = arrayOop(a)->base(type);
4163 #ifndef USDT2
4164 DTRACE_PROBE1(hotspot_jni, GetPrimitiveArrayCritical__return, ret);
4165 #else /* USDT2 */
4166 HOTSPOT_JNI_GETPRIMITIVEARRAYCRITICAL_RETURN(ret);
4167 #endif /* USDT2 */
4168 return ret;
4169 JNI_END
4170
4171
4172 JNI_ENTRY(void, jni_ReleasePrimitiveArrayCritical(JNIEnv *env, jarray array, void *carray, jint mode))
4173 JNIWrapper("ReleasePrimitiveArrayCritical");
4174 #ifndef USDT2
4175 DTRACE_PROBE4(hotspot_jni, ReleasePrimitiveArrayCritical__entry, env, array, carray, mode);
4176 #else /* USDT2 */
4177 HOTSPOT_JNI_RELEASEPRIMITIVEARRAYCRITICAL_ENTRY(env, array, carray, mode);
4178 #endif /* USDT2 */
4179 // The array, carray and mode arguments are ignored
4180 GC_locker::unlock_critical(thread);
4181 #ifndef USDT2
4182 DTRACE_PROBE(hotspot_jni, ReleasePrimitiveArrayCritical__return);
4183 #else /* USDT2 */
4184 HOTSPOT_JNI_RELEASEPRIMITIVEARRAYCRITICAL_RETURN();
4185 #endif /* USDT2 */
4186 JNI_END
4187
4188
4189 JNI_ENTRY(const jchar*, jni_GetStringCritical(JNIEnv *env, jstring string, jboolean *isCopy))
4190 JNIWrapper("GetStringCritical");
4191 #ifndef USDT2
4192 DTRACE_PROBE3(hotspot_jni, GetStringCritical__entry, env, string, isCopy);
4193 #else /* USDT2 */
4194 HOTSPOT_JNI_GETSTRINGCRITICAL_ENTRY(env, string, (uintptr_t *) isCopy);
4195 #endif /* USDT2 */
4196 GC_locker::lock_critical(thread);
4197 if (isCopy != NULL) {
4198 *isCopy = JNI_FALSE;
4199 }
4200 oop s = JNIHandles::resolve_non_null(string);
4201 int s_len = java_lang_String::length(s);
4202 typeArrayOop s_value = java_lang_String::value(s);
4203 int s_offset = java_lang_String::offset(s);
4204 const jchar* ret;
4205 if (s_len > 0) {
4206 ret = s_value->char_at_addr(s_offset);
4207 } else {
4208 ret = (jchar*) s_value->base(T_CHAR);
4209 }
4210 #ifndef USDT2
4211 DTRACE_PROBE1(hotspot_jni, GetStringCritical__return, ret);
4212 #else /* USDT2 */
4213 HOTSPOT_JNI_GETSTRINGCRITICAL_RETURN((uint16_t *) ret);
4214 #endif /* USDT2 */
4215 return ret;
4216 JNI_END
4217
4218
4219 JNI_ENTRY(void, jni_ReleaseStringCritical(JNIEnv *env, jstring str, const jchar *chars))
4220 JNIWrapper("ReleaseStringCritical");
4221 #ifndef USDT2
4222 DTRACE_PROBE3(hotspot_jni, ReleaseStringCritical__entry, env, str, chars);
4223 #else /* USDT2 */
4224 HOTSPOT_JNI_RELEASESTRINGCRITICAL_ENTRY(env, str, (uint16_t *) chars);
4225 #endif /* USDT2 */
4226 // The str and chars arguments are ignored
4227 GC_locker::unlock_critical(thread);
4228 #ifndef USDT2
4229 DTRACE_PROBE(hotspot_jni, ReleaseStringCritical__return);
4230 #else /* USDT2 */
4231 HOTSPOT_JNI_RELEASESTRINGCRITICAL_RETURN();
4232 #endif /* USDT2 */
4233 JNI_END
4234
4235
4236 JNI_ENTRY(jweak, jni_NewWeakGlobalRef(JNIEnv *env, jobject ref))
4237 JNIWrapper("jni_NewWeakGlobalRef");
4238 #ifndef USDT2
4239 DTRACE_PROBE2(hotspot_jni, NewWeakGlobalRef__entry, env, ref);
4240 #else /* USDT2 */
4241 HOTSPOT_JNI_NEWWEAKGLOBALREF_ENTRY(env, ref);
4242 #endif /* USDT2 */
4243 Handle ref_handle(thread, JNIHandles::resolve(ref));
4244 jweak ret = JNIHandles::make_weak_global(ref_handle);
4245 #ifndef USDT2
4246 DTRACE_PROBE1(hotspot_jni, NewWeakGlobalRef__return, ret);
4247 #else /* USDT2 */
4248 HOTSPOT_JNI_NEWWEAKGLOBALREF_RETURN(ret);
4249 #endif /* USDT2 */
4250 return ret;
4251 JNI_END
4252
4253 // Must be JNI_ENTRY (with HandleMark)
4254 JNI_ENTRY(void, jni_DeleteWeakGlobalRef(JNIEnv *env, jweak ref))
4255 JNIWrapper("jni_DeleteWeakGlobalRef");
4256 #ifndef USDT2
4257 DTRACE_PROBE2(hotspot_jni, DeleteWeakGlobalRef__entry, env, ref);
4258 #else /* USDT2 */
4259 HOTSPOT_JNI_DELETEWEAKGLOBALREF_ENTRY(env, ref);
4260 #endif /* USDT2 */
4261 JNIHandles::destroy_weak_global(ref);
4262 #ifndef USDT2
4263 DTRACE_PROBE(hotspot_jni, DeleteWeakGlobalRef__return);
4264 #else /* USDT2 */
4265 HOTSPOT_JNI_DELETEWEAKGLOBALREF_RETURN();
4266 #endif /* USDT2 */
4267 JNI_END
4268
4269
4270 JNI_QUICK_ENTRY(jboolean, jni_ExceptionCheck(JNIEnv *env))
4271 JNIWrapper("jni_ExceptionCheck");
4272 #ifndef USDT2
4273 DTRACE_PROBE1(hotspot_jni, ExceptionCheck__entry, env);
4274 #else /* USDT2 */
4275 HOTSPOT_JNI_EXCEPTIONCHECK_ENTRY(env);
4276 #endif /* USDT2 */
4277 jni_check_async_exceptions(thread);
4278 jboolean ret = (thread->has_pending_exception()) ? JNI_TRUE : JNI_FALSE;
4279 #ifndef USDT2
4280 DTRACE_PROBE1(hotspot_jni, ExceptionCheck__return, ret);
4281 #else /* USDT2 */
4282 HOTSPOT_JNI_EXCEPTIONCHECK_RETURN(ret);
4283 #endif /* USDT2 */
4284 return ret;
4285 JNI_END
4286
4287
4288 // Initialization state for three routines below relating to
4289 // java.nio.DirectBuffers
4290 static jint directBufferSupportInitializeStarted = 0;
4291 static volatile jint directBufferSupportInitializeEnded = 0;
4292 static volatile jint directBufferSupportInitializeFailed = 0;
4293 static jclass bufferClass = NULL;
4294 static jclass directBufferClass = NULL;
4295 static jclass directByteBufferClass = NULL;
4296 static jmethodID directByteBufferConstructor = NULL;
4297 static jfieldID directBufferAddressField = NULL;
4298 static jfieldID bufferCapacityField = NULL;
4299
4300 static jclass lookupOne(JNIEnv* env, const char* name, TRAPS) {
4301 Handle loader; // null (bootstrap) loader
4302 Handle protection_domain; // null protection domain
4303
4304 TempNewSymbol sym = SymbolTable::new_symbol(name, CHECK_NULL);
4305 jclass result = find_class_from_class_loader(env, sym, true, loader, protection_domain, true, CHECK_NULL);
4306
4307 if (TraceClassResolution && result != NULL) {
4308 trace_class_resolution(java_lang_Class::as_Klass(JNIHandles::resolve_non_null(result)));
4309 }
4310 return result;
4311 }
4312
4313 // These lookups are done with the NULL (bootstrap) ClassLoader to
4314 // circumvent any security checks that would be done by jni_FindClass.
4315 JNI_ENTRY(bool, lookupDirectBufferClasses(JNIEnv* env))
4316 {
4317 if ((bufferClass = lookupOne(env, "java/nio/Buffer", thread)) == NULL) { return false; }
4318 if ((directBufferClass = lookupOne(env, "sun/nio/ch/DirectBuffer", thread)) == NULL) { return false; }
4319 if ((directByteBufferClass = lookupOne(env, "java/nio/DirectByteBuffer", thread)) == NULL) { return false; }
4320 return true;
4321 }
4322 JNI_END
4323
4324
4325 static bool initializeDirectBufferSupport(JNIEnv* env, JavaThread* thread) {
4326 if (directBufferSupportInitializeFailed) {
4327 return false;
4328 }
4329
4330 if (Atomic::cmpxchg(1, &directBufferSupportInitializeStarted, 0) == 0) {
4331 if (!lookupDirectBufferClasses(env)) {
4332 directBufferSupportInitializeFailed = 1;
4333 return false;
4334 }
4335
4336 // Make global references for these
4337 bufferClass = (jclass) env->NewGlobalRef(bufferClass);
4338 directBufferClass = (jclass) env->NewGlobalRef(directBufferClass);
4339 directByteBufferClass = (jclass) env->NewGlobalRef(directByteBufferClass);
4340
4341 // Get needed field and method IDs
4342 directByteBufferConstructor = env->GetMethodID(directByteBufferClass, "<init>", "(JI)V");
4343 directBufferAddressField = env->GetFieldID(bufferClass, "address", "J");
4344 bufferCapacityField = env->GetFieldID(bufferClass, "capacity", "I");
4345
4346 if ((directByteBufferConstructor == NULL) ||
4347 (directBufferAddressField == NULL) ||
4348 (bufferCapacityField == NULL)) {
4349 directBufferSupportInitializeFailed = 1;
4350 return false;
4351 }
4352
4353 directBufferSupportInitializeEnded = 1;
4354 } else {
4355 while (!directBufferSupportInitializeEnded && !directBufferSupportInitializeFailed) {
4356 // Set state as yield_all can call os:sleep. On Solaris, yield_all calls
4357 // os::sleep which requires the VM state transition. On other platforms, it
4358 // is not necessary. The following call to change the VM state is purposely
4359 // put inside the loop to avoid potential deadlock when multiple threads
4360 // try to call this method. See 6791815 for more details.
4361 ThreadInVMfromNative tivn(thread);
4362 os::yield_all();
4363 }
4364 }
4365
4366 return !directBufferSupportInitializeFailed;
4367 }
4368
4369 extern "C" jobject JNICALL jni_NewDirectByteBuffer(JNIEnv *env, void* address, jlong capacity)
4370 {
4371 // thread_from_jni_environment() will block if VM is gone.
4372 JavaThread* thread = JavaThread::thread_from_jni_environment(env);
4373
4374 JNIWrapper("jni_NewDirectByteBuffer");
4375 #ifndef USDT2
4376 DTRACE_PROBE3(hotspot_jni, NewDirectByteBuffer__entry, env, address, capacity);
4377 #else /* USDT2 */
4378 HOTSPOT_JNI_NEWDIRECTBYTEBUFFER_ENTRY(env, address, capacity);
4379 #endif /* USDT2 */
4380
4381 if (!directBufferSupportInitializeEnded) {
4382 if (!initializeDirectBufferSupport(env, thread)) {
4383 #ifndef USDT2
4384 DTRACE_PROBE1(hotspot_jni, NewDirectByteBuffer__return, NULL);
4385 #else /* USDT2 */
4386 HOTSPOT_JNI_NEWDIRECTBYTEBUFFER_RETURN(NULL);
4387 #endif /* USDT2 */
4388 return NULL;
4389 }
4390 }
4391
4392 // Being paranoid about accidental sign extension on address
4393 jlong addr = (jlong) ((uintptr_t) address);
4394 // NOTE that package-private DirectByteBuffer constructor currently
4395 // takes int capacity
4396 jint cap = (jint) capacity;
4397 jobject ret = env->NewObject(directByteBufferClass, directByteBufferConstructor, addr, cap);
4398 #ifndef USDT2
4399 DTRACE_PROBE1(hotspot_jni, NewDirectByteBuffer__return, ret);
4400 #else /* USDT2 */
4401 HOTSPOT_JNI_NEWDIRECTBYTEBUFFER_RETURN(ret);
4402 #endif /* USDT2 */
4403 return ret;
4404 }
4405
4406 #ifndef USDT2
4407 DT_RETURN_MARK_DECL(GetDirectBufferAddress, void*);
4408 #else /* USDT2 */
4409 DT_RETURN_MARK_DECL(GetDirectBufferAddress, void*
4410 , HOTSPOT_JNI_GETDIRECTBUFFERADDRESS_RETURN((void*) _ret_ref));
4411 #endif /* USDT2 */
4412
4413 extern "C" void* JNICALL jni_GetDirectBufferAddress(JNIEnv *env, jobject buf)
4414 {
4415 // thread_from_jni_environment() will block if VM is gone.
4416 JavaThread* thread = JavaThread::thread_from_jni_environment(env);
4417
4418 JNIWrapper("jni_GetDirectBufferAddress");
4419 #ifndef USDT2
4420 DTRACE_PROBE2(hotspot_jni, GetDirectBufferAddress__entry, env, buf);
4421 #else /* USDT2 */
4422 HOTSPOT_JNI_GETDIRECTBUFFERADDRESS_ENTRY(env, buf);
4423 #endif /* USDT2 */
4424 void* ret = NULL;
4425 DT_RETURN_MARK(GetDirectBufferAddress, void*, (const void*&)ret);
4426
4427 if (!directBufferSupportInitializeEnded) {
4428 if (!initializeDirectBufferSupport(env, thread)) {
4429 return 0;
4430 }
4431 }
4432
4433 if ((buf != NULL) && (!env->IsInstanceOf(buf, directBufferClass))) {
4434 return 0;
4435 }
4436
4437 ret = (void*)(intptr_t)env->GetLongField(buf, directBufferAddressField);
4438 return ret;
4439 }
4440
4441 #ifndef USDT2
4442 DT_RETURN_MARK_DECL(GetDirectBufferCapacity, jlong);
4443 #else /* USDT2 */
4444 DT_RETURN_MARK_DECL(GetDirectBufferCapacity, jlong
4445 , HOTSPOT_JNI_GETDIRECTBUFFERCAPACITY_RETURN(_ret_ref));
4446 #endif /* USDT2 */
4447
4448 extern "C" jlong JNICALL jni_GetDirectBufferCapacity(JNIEnv *env, jobject buf)
4449 {
4450 // thread_from_jni_environment() will block if VM is gone.
4451 JavaThread* thread = JavaThread::thread_from_jni_environment(env);
4452
4453 JNIWrapper("jni_GetDirectBufferCapacity");
4454 #ifndef USDT2
4455 DTRACE_PROBE2(hotspot_jni, GetDirectBufferCapacity__entry, env, buf);
4456 #else /* USDT2 */
4457 HOTSPOT_JNI_GETDIRECTBUFFERCAPACITY_ENTRY(env, buf);
4458 #endif /* USDT2 */
4459 jlong ret = -1;
4460 DT_RETURN_MARK(GetDirectBufferCapacity, jlong, (const jlong&)ret);
4461
4462 if (!directBufferSupportInitializeEnded) {
4463 if (!initializeDirectBufferSupport(env, thread)) {
4464 ret = 0;
4465 return ret;
4466 }
4467 }
4468
4469 if (buf == NULL) {
4470 return -1;
4471 }
4472
4473 if (!env->IsInstanceOf(buf, directBufferClass)) {
4474 return -1;
4475 }
4476
4477 // NOTE that capacity is currently an int in the implementation
4478 ret = env->GetIntField(buf, bufferCapacityField);
4479 return ret;
4480 }
4481
4482
4483 JNI_LEAF(jint, jni_GetVersion(JNIEnv *env))
4484 JNIWrapper("GetVersion");
4485 #ifndef USDT2
4486 DTRACE_PROBE1(hotspot_jni, GetVersion__entry, env);
4487 #else /* USDT2 */
4488 HOTSPOT_JNI_GETVERSION_ENTRY(env);
4489 #endif /* USDT2 */
4490 #ifndef USDT2
4491 DTRACE_PROBE1(hotspot_jni, GetVersion__return, CurrentVersion);
4492 #else /* USDT2 */
4493 HOTSPOT_JNI_GETVERSION_RETURN(CurrentVersion);
4494 #endif /* USDT2 */
4495 return CurrentVersion;
4496 JNI_END
4497
4498 extern struct JavaVM_ main_vm;
4499
4500 JNI_LEAF(jint, jni_GetJavaVM(JNIEnv *env, JavaVM **vm))
4501 JNIWrapper("jni_GetJavaVM");
4502 #ifndef USDT2
4503 DTRACE_PROBE2(hotspot_jni, GetJavaVM__entry, env, vm);
4504 #else /* USDT2 */
4505 HOTSPOT_JNI_GETJAVAVM_ENTRY(env, (void **) vm);
4506 #endif /* USDT2 */
4507 *vm = (JavaVM *)(&main_vm);
4508 #ifndef USDT2
4509 DTRACE_PROBE1(hotspot_jni, GetJavaVM__return, JNI_OK);
4510 #else /* USDT2 */
4511 HOTSPOT_JNI_GETJAVAVM_RETURN(JNI_OK);
4512 #endif /* USDT2 */
4513 return JNI_OK;
4514 JNI_END
4515
4516 // Structure containing all jni functions
4517 struct JNINativeInterface_ jni_NativeInterface = {
4518 NULL,
4519 NULL,
4520 NULL,
4521
4522 NULL,
4523
4524 jni_GetVersion,
4525
4526 jni_DefineClass,
4527 jni_FindClass,
4528
4529 jni_FromReflectedMethod,
4530 jni_FromReflectedField,
4531
4532 jni_ToReflectedMethod,
4533
4534 jni_GetSuperclass,
4535 jni_IsAssignableFrom,
4536
4537 jni_ToReflectedField,
4538
4539 jni_Throw,
4540 jni_ThrowNew,
4541 jni_ExceptionOccurred,
4542 jni_ExceptionDescribe,
4543 jni_ExceptionClear,
4544 jni_FatalError,
4545
4546 jni_PushLocalFrame,
4547 jni_PopLocalFrame,
4548
4549 jni_NewGlobalRef,
4550 jni_DeleteGlobalRef,
4551 jni_DeleteLocalRef,
4552 jni_IsSameObject,
4553
4554 jni_NewLocalRef,
4555 jni_EnsureLocalCapacity,
4556
4557 jni_AllocObject,
4558 jni_NewObject,
4559 jni_NewObjectV,
4560 jni_NewObjectA,
4561
4562 jni_GetObjectClass,
4563 jni_IsInstanceOf,
4564
4565 jni_GetMethodID,
4566
4567 jni_CallObjectMethod,
4568 jni_CallObjectMethodV,
4569 jni_CallObjectMethodA,
4570 jni_CallBooleanMethod,
4571 jni_CallBooleanMethodV,
4572 jni_CallBooleanMethodA,
4573 jni_CallByteMethod,
4574 jni_CallByteMethodV,
4575 jni_CallByteMethodA,
4576 jni_CallCharMethod,
4577 jni_CallCharMethodV,
4578 jni_CallCharMethodA,
4579 jni_CallShortMethod,
4580 jni_CallShortMethodV,
4581 jni_CallShortMethodA,
4582 jni_CallIntMethod,
4583 jni_CallIntMethodV,
4584 jni_CallIntMethodA,
4585 jni_CallLongMethod,
4586 jni_CallLongMethodV,
4587 jni_CallLongMethodA,
4588 jni_CallFloatMethod,
4589 jni_CallFloatMethodV,
4590 jni_CallFloatMethodA,
4591 jni_CallDoubleMethod,
4592 jni_CallDoubleMethodV,
4593 jni_CallDoubleMethodA,
4594 jni_CallVoidMethod,
4595 jni_CallVoidMethodV,
4596 jni_CallVoidMethodA,
4597
4598 jni_CallNonvirtualObjectMethod,
4599 jni_CallNonvirtualObjectMethodV,
4600 jni_CallNonvirtualObjectMethodA,
4601 jni_CallNonvirtualBooleanMethod,
4602 jni_CallNonvirtualBooleanMethodV,
4603 jni_CallNonvirtualBooleanMethodA,
4604 jni_CallNonvirtualByteMethod,
4605 jni_CallNonvirtualByteMethodV,
4606 jni_CallNonvirtualByteMethodA,
4607 jni_CallNonvirtualCharMethod,
4608 jni_CallNonvirtualCharMethodV,
4609 jni_CallNonvirtualCharMethodA,
4610 jni_CallNonvirtualShortMethod,
4611 jni_CallNonvirtualShortMethodV,
4612 jni_CallNonvirtualShortMethodA,
4613 jni_CallNonvirtualIntMethod,
4614 jni_CallNonvirtualIntMethodV,
4615 jni_CallNonvirtualIntMethodA,
4616 jni_CallNonvirtualLongMethod,
4617 jni_CallNonvirtualLongMethodV,
4618 jni_CallNonvirtualLongMethodA,
4619 jni_CallNonvirtualFloatMethod,
4620 jni_CallNonvirtualFloatMethodV,
4621 jni_CallNonvirtualFloatMethodA,
4622 jni_CallNonvirtualDoubleMethod,
4623 jni_CallNonvirtualDoubleMethodV,
4624 jni_CallNonvirtualDoubleMethodA,
4625 jni_CallNonvirtualVoidMethod,
4626 jni_CallNonvirtualVoidMethodV,
4627 jni_CallNonvirtualVoidMethodA,
4628
4629 jni_GetFieldID,
4630
4631 jni_GetObjectField,
4632 jni_GetBooleanField,
4633 jni_GetByteField,
4634 jni_GetCharField,
4635 jni_GetShortField,
4636 jni_GetIntField,
4637 jni_GetLongField,
4638 jni_GetFloatField,
4639 jni_GetDoubleField,
4640
4641 jni_SetObjectField,
4642 jni_SetBooleanField,
4643 jni_SetByteField,
4644 jni_SetCharField,
4645 jni_SetShortField,
4646 jni_SetIntField,
4647 jni_SetLongField,
4648 jni_SetFloatField,
4649 jni_SetDoubleField,
4650
4651 jni_GetStaticMethodID,
4652
4653 jni_CallStaticObjectMethod,
4654 jni_CallStaticObjectMethodV,
4655 jni_CallStaticObjectMethodA,
4656 jni_CallStaticBooleanMethod,
4657 jni_CallStaticBooleanMethodV,
4658 jni_CallStaticBooleanMethodA,
4659 jni_CallStaticByteMethod,
4660 jni_CallStaticByteMethodV,
4661 jni_CallStaticByteMethodA,
4662 jni_CallStaticCharMethod,
4663 jni_CallStaticCharMethodV,
4664 jni_CallStaticCharMethodA,
4665 jni_CallStaticShortMethod,
4666 jni_CallStaticShortMethodV,
4667 jni_CallStaticShortMethodA,
4668 jni_CallStaticIntMethod,
4669 jni_CallStaticIntMethodV,
4670 jni_CallStaticIntMethodA,
4671 jni_CallStaticLongMethod,
4672 jni_CallStaticLongMethodV,
4673 jni_CallStaticLongMethodA,
4674 jni_CallStaticFloatMethod,
4675 jni_CallStaticFloatMethodV,
4676 jni_CallStaticFloatMethodA,
4677 jni_CallStaticDoubleMethod,
4678 jni_CallStaticDoubleMethodV,
4679 jni_CallStaticDoubleMethodA,
4680 jni_CallStaticVoidMethod,
4681 jni_CallStaticVoidMethodV,
4682 jni_CallStaticVoidMethodA,
4683
4684 jni_GetStaticFieldID,
4685
4686 jni_GetStaticObjectField,
4687 jni_GetStaticBooleanField,
4688 jni_GetStaticByteField,
4689 jni_GetStaticCharField,
4690 jni_GetStaticShortField,
4691 jni_GetStaticIntField,
4692 jni_GetStaticLongField,
4693 jni_GetStaticFloatField,
4694 jni_GetStaticDoubleField,
4695
4696 jni_SetStaticObjectField,
4697 jni_SetStaticBooleanField,
4698 jni_SetStaticByteField,
4699 jni_SetStaticCharField,
4700 jni_SetStaticShortField,
4701 jni_SetStaticIntField,
4702 jni_SetStaticLongField,
4703 jni_SetStaticFloatField,
4704 jni_SetStaticDoubleField,
4705
4706 jni_NewString,
4707 jni_GetStringLength,
4708 jni_GetStringChars,
4709 jni_ReleaseStringChars,
4710
4711 jni_NewStringUTF,
4712 jni_GetStringUTFLength,
4713 jni_GetStringUTFChars,
4714 jni_ReleaseStringUTFChars,
4715
4716 jni_GetArrayLength,
4717
4718 jni_NewObjectArray,
4719 jni_GetObjectArrayElement,
4720 jni_SetObjectArrayElement,
4721
4722 jni_NewBooleanArray,
4723 jni_NewByteArray,
4724 jni_NewCharArray,
4725 jni_NewShortArray,
4726 jni_NewIntArray,
4727 jni_NewLongArray,
4728 jni_NewFloatArray,
4729 jni_NewDoubleArray,
4730
4731 jni_GetBooleanArrayElements,
4732 jni_GetByteArrayElements,
4733 jni_GetCharArrayElements,
4734 jni_GetShortArrayElements,
4735 jni_GetIntArrayElements,
4736 jni_GetLongArrayElements,
4737 jni_GetFloatArrayElements,
4738 jni_GetDoubleArrayElements,
4739
4740 jni_ReleaseBooleanArrayElements,
4741 jni_ReleaseByteArrayElements,
4742 jni_ReleaseCharArrayElements,
4743 jni_ReleaseShortArrayElements,
4744 jni_ReleaseIntArrayElements,
4745 jni_ReleaseLongArrayElements,
4746 jni_ReleaseFloatArrayElements,
4747 jni_ReleaseDoubleArrayElements,
4748
4749 jni_GetBooleanArrayRegion,
4750 jni_GetByteArrayRegion,
4751 jni_GetCharArrayRegion,
4752 jni_GetShortArrayRegion,
4753 jni_GetIntArrayRegion,
4754 jni_GetLongArrayRegion,
4755 jni_GetFloatArrayRegion,
4756 jni_GetDoubleArrayRegion,
4757
4758 jni_SetBooleanArrayRegion,
4759 jni_SetByteArrayRegion,
4760 jni_SetCharArrayRegion,
4761 jni_SetShortArrayRegion,
4762 jni_SetIntArrayRegion,
4763 jni_SetLongArrayRegion,
4764 jni_SetFloatArrayRegion,
4765 jni_SetDoubleArrayRegion,
4766
4767 jni_RegisterNatives,
4768 jni_UnregisterNatives,
4769
4770 jni_MonitorEnter,
4771 jni_MonitorExit,
4772
4773 jni_GetJavaVM,
4774
4775 jni_GetStringRegion,
4776 jni_GetStringUTFRegion,
4777
4778 jni_GetPrimitiveArrayCritical,
4779 jni_ReleasePrimitiveArrayCritical,
4780
4781 jni_GetStringCritical,
4782 jni_ReleaseStringCritical,
4783
4784 jni_NewWeakGlobalRef,
4785 jni_DeleteWeakGlobalRef,
4786
4787 jni_ExceptionCheck,
4788
4789 jni_NewDirectByteBuffer,
4790 jni_GetDirectBufferAddress,
4791 jni_GetDirectBufferCapacity,
4792
4793 // New 1_6 features
4794
4795 jni_GetObjectRefType
4796 };
4797
4798
4799 // For jvmti use to modify jni function table.
4800 // Java threads in native contiues to run until it is transitioned
4801 // to VM at safepoint. Before the transition or before it is blocked
4802 // for safepoint it may access jni function table. VM could crash if
4803 // any java thread access the jni function table in the middle of memcpy.
4804 // To avoid this each function pointers are copied automically.
4805 void copy_jni_function_table(const struct JNINativeInterface_ *new_jni_NativeInterface) {
4806 assert(SafepointSynchronize::is_at_safepoint(), "must be at safepoint");
4807 intptr_t *a = (intptr_t *) jni_functions();
4808 intptr_t *b = (intptr_t *) new_jni_NativeInterface;
4809 for (uint i=0; i < sizeof(struct JNINativeInterface_)/sizeof(void *); i++) {
4810 Atomic::store_ptr(*b++, a++);
4811 }
4812 }
4813
4814 void quicken_jni_functions() {
4815 // Replace Get<Primitive>Field with fast versions
4816 if (UseFastJNIAccessors && !JvmtiExport::can_post_field_access()
4817 && !VerifyJNIFields && !TraceJNICalls && !CountJNICalls && !CheckJNICalls
4818 #if defined(_WINDOWS) && defined(IA32) && defined(COMPILER2)
4819 // windows x86 currently needs SEH wrapper and the gain of the fast
4820 // versions currently isn't certain for server vm on uniprocessor.
4821 && os::is_MP()
4822 #endif
4823 ) {
4824 address func;
4825 func = JNI_FastGetField::generate_fast_get_boolean_field();
4826 if (func != (address)-1) {
4827 jni_NativeInterface.GetBooleanField = (GetBooleanField_t)func;
4828 }
4829 func = JNI_FastGetField::generate_fast_get_byte_field();
4830 if (func != (address)-1) {
4831 jni_NativeInterface.GetByteField = (GetByteField_t)func;
4832 }
4833 func = JNI_FastGetField::generate_fast_get_char_field();
4834 if (func != (address)-1) {
4835 jni_NativeInterface.GetCharField = (GetCharField_t)func;
4836 }
4837 func = JNI_FastGetField::generate_fast_get_short_field();
4838 if (func != (address)-1) {
4839 jni_NativeInterface.GetShortField = (GetShortField_t)func;
4840 }
4841 func = JNI_FastGetField::generate_fast_get_int_field();
4842 if (func != (address)-1) {
4843 jni_NativeInterface.GetIntField = (GetIntField_t)func;
4844 }
4845 func = JNI_FastGetField::generate_fast_get_long_field();
4846 if (func != (address)-1) {
4847 jni_NativeInterface.GetLongField = (GetLongField_t)func;
4848 }
4849 func = JNI_FastGetField::generate_fast_get_float_field();
4850 if (func != (address)-1) {
4851 jni_NativeInterface.GetFloatField = (GetFloatField_t)func;
4852 }
4853 func = JNI_FastGetField::generate_fast_get_double_field();
4854 if (func != (address)-1) {
4855 jni_NativeInterface.GetDoubleField = (GetDoubleField_t)func;
4856 }
4857 }
4858 }
4859
4860 // Returns the function structure
4861 struct JNINativeInterface_* jni_functions() {
4862 #if INCLUDE_JNI_CHECK
4863 if (CheckJNICalls) return jni_functions_check();
4864 #endif // INCLUDE_JNI_CHECK
4865 return &jni_NativeInterface;
4866 }
4867
4868 // Returns the function structure
4869 struct JNINativeInterface_* jni_functions_nocheck() {
4870 return &jni_NativeInterface;
4871 }
4872
4873
4874 // Invocation API
4875
4876
4877 // Forward declaration
4878 extern const struct JNIInvokeInterface_ jni_InvokeInterface;
4879
4880 // Global invocation API vars
4881 volatile jint vm_created = 0;
4882 // Indicate whether it is safe to recreate VM
4883 volatile jint safe_to_recreate_vm = 1;
4884 struct JavaVM_ main_vm = {&jni_InvokeInterface};
4885
4886
4887 #define JAVASTACKSIZE (400 * 1024) /* Default size of a thread java stack */
4888 enum { VERIFY_NONE, VERIFY_REMOTE, VERIFY_ALL };
4889
4890 #ifndef USDT2
4891 HS_DTRACE_PROBE_DECL1(hotspot_jni, GetDefaultJavaVMInitArgs__entry, void*);
4892 DT_RETURN_MARK_DECL(GetDefaultJavaVMInitArgs, jint);
4893 #else /* USDT2 */
4894 DT_RETURN_MARK_DECL(GetDefaultJavaVMInitArgs, jint
4895 , HOTSPOT_JNI_GETDEFAULTJAVAVMINITARGS_RETURN(_ret_ref));
4896 #endif /* USDT2 */
4897
4898 _JNI_IMPORT_OR_EXPORT_ jint JNICALL JNI_GetDefaultJavaVMInitArgs(void *args_) {
4899 #ifndef USDT2
4900 HS_DTRACE_PROBE1(hotspot_jni, GetDefaultJavaVMInitArgs__entry, args_);
4901 #else /* USDT2 */
4902 HOTSPOT_JNI_GETDEFAULTJAVAVMINITARGS_ENTRY(args_);
4903 #endif /* USDT2 */
4904 JDK1_1InitArgs *args = (JDK1_1InitArgs *)args_;
4905 jint ret = JNI_ERR;
4906 DT_RETURN_MARK(GetDefaultJavaVMInitArgs, jint, (const jint&)ret);
4907
4908 if (Threads::is_supported_jni_version(args->version)) {
4909 ret = JNI_OK;
4910 }
4911 // 1.1 style no longer supported in hotspot.
4912 // According the JNI spec, we should update args->version on return.
4913 // We also use the structure to communicate with launcher about default
4914 // stack size.
4915 if (args->version == JNI_VERSION_1_1) {
4916 args->version = JNI_VERSION_1_2;
4917 // javaStackSize is int in arguments structure
4918 assert(jlong(ThreadStackSize) * K < INT_MAX, "integer overflow");
4919 args->javaStackSize = (jint)(ThreadStackSize * K);
4920 }
4921 return ret;
4922 }
4923
4924 #ifndef PRODUCT
4925
4926 #include "gc_implementation/shared/gcTimer.hpp"
4927 #include "gc_interface/collectedHeap.hpp"
4928 #if INCLUDE_ALL_GCS
4929 #include "gc_implementation/g1/heapRegionRemSet.hpp"
4930 #endif
4931 #include "utilities/quickSort.hpp"
4932 #include "utilities/ostream.hpp"
4933 #if INCLUDE_VM_STRUCTS
4934 #include "runtime/vmStructs.hpp"
4935 #endif
4936
4937 #define run_unit_test(unit_test_function_call) \
4938 tty->print_cr("Running test: " #unit_test_function_call); \
4939 unit_test_function_call
4940
4941 // Forward declaration
4942 void TestReservedSpace_test();
4943 void TestReserveMemorySpecial_test();
4944 void TestVirtualSpace_test();
4945 void TestMetaspaceAux_test();
4946 void TestMetachunk_test();
4947 void TestVirtualSpaceNode_test();
4948 #if INCLUDE_ALL_GCS
4949 void TestG1BiasedArray_test();
4950 #endif
4951
4952 void execute_internal_vm_tests() {
4953 if (ExecuteInternalVMTests) {
4954 tty->print_cr("Running internal VM tests");
4955 run_unit_test(TestReservedSpace_test());
4956 run_unit_test(TestReserveMemorySpecial_test());
4957 run_unit_test(TestVirtualSpace_test());
4958 run_unit_test(TestMetaspaceAux_test());
4959 run_unit_test(TestMetachunk_test());
4960 run_unit_test(TestVirtualSpaceNode_test());
4961 run_unit_test(GlobalDefinitions::test_globals());
4962 run_unit_test(GCTimerAllTest::all());
4963 run_unit_test(arrayOopDesc::test_max_array_length());
4964 run_unit_test(CollectedHeap::test_is_in());
4965 run_unit_test(QuickSort::test_quick_sort());
4966 run_unit_test(AltHashing::test_alt_hash());
4967 run_unit_test(test_loggc_filename());
4968 #if INCLUDE_VM_STRUCTS
4969 run_unit_test(VMStructs::test());
4970 #endif
4971 #if INCLUDE_ALL_GCS
4972 run_unit_test(TestG1BiasedArray_test());
4973 run_unit_test(HeapRegionRemSet::test_prt());
4974 #endif
4975 tty->print_cr("All internal VM tests passed");
4976 }
4977 }
4978
4979 #undef run_unit_test
4980
4981 #endif
4982
4983 #ifndef USDT2
4984 HS_DTRACE_PROBE_DECL3(hotspot_jni, CreateJavaVM__entry, vm, penv, args);
4985 DT_RETURN_MARK_DECL(CreateJavaVM, jint);
4986 #else /* USDT2 */
4987 DT_RETURN_MARK_DECL(CreateJavaVM, jint
4988 , HOTSPOT_JNI_CREATEJAVAVM_RETURN(_ret_ref));
4989 #endif /* USDT2 */
4990
4991 _JNI_IMPORT_OR_EXPORT_ jint JNICALL JNI_CreateJavaVM(JavaVM **vm, void **penv, void *args) {
4992 #ifndef USDT2
4993 HS_DTRACE_PROBE3(hotspot_jni, CreateJavaVM__entry, vm, penv, args);
4994 #else /* USDT2 */
4995 HOTSPOT_JNI_CREATEJAVAVM_ENTRY((void **) vm, penv, args);
4996 #endif /* USDT2 */
4997
4998 jint result = JNI_ERR;
4999 DT_RETURN_MARK(CreateJavaVM, jint, (const jint&)result);
5000
5001 // We're about to use Atomic::xchg for synchronization. Some Zero
5002 // platforms use the GCC builtin __sync_lock_test_and_set for this,
5003 // but __sync_lock_test_and_set is not guaranteed to do what we want
5004 // on all architectures. So we check it works before relying on it.
5005 #if defined(ZERO) && defined(ASSERT)
5006 {
5007 jint a = 0xcafebabe;
5008 jint b = Atomic::xchg(0xdeadbeef, &a);
5009 void *c = &a;
5010 void *d = Atomic::xchg_ptr(&b, &c);
5011 assert(a == (jint) 0xdeadbeef && b == (jint) 0xcafebabe, "Atomic::xchg() works");
5012 assert(c == &b && d == &a, "Atomic::xchg_ptr() works");
5013 }
5014 #endif // ZERO && ASSERT
5015
5016 // At the moment it's only possible to have one Java VM,
5017 // since some of the runtime state is in global variables.
5018
5019 // We cannot use our mutex locks here, since they only work on
5020 // Threads. We do an atomic compare and exchange to ensure only
5021 // one thread can call this method at a time
5022
5023 // We use Atomic::xchg rather than Atomic::add/dec since on some platforms
5024 // the add/dec implementations are dependent on whether we are running
5025 // on a multiprocessor, and at this stage of initialization the os::is_MP
5026 // function used to determine this will always return false. Atomic::xchg
5027 // does not have this problem.
5028 if (Atomic::xchg(1, &vm_created) == 1) {
5029 return JNI_EEXIST; // already created, or create attempt in progress
5030 }
5031 if (Atomic::xchg(0, &safe_to_recreate_vm) == 0) {
5032 return JNI_ERR; // someone tried and failed and retry not allowed.
5033 }
5034
5035 assert(vm_created == 1, "vm_created is true during the creation");
5036
5037 /**
5038 * Certain errors during initialization are recoverable and do not
5039 * prevent this method from being called again at a later time
5040 * (perhaps with different arguments). However, at a certain
5041 * point during initialization if an error occurs we cannot allow
5042 * this function to be called again (or it will crash). In those
5043 * situations, the 'canTryAgain' flag is set to false, which atomically
5044 * sets safe_to_recreate_vm to 1, such that any new call to
5045 * JNI_CreateJavaVM will immediately fail using the above logic.
5046 */
5047 bool can_try_again = true;
5048
5049 result = Threads::create_vm((JavaVMInitArgs*) args, &can_try_again);
5050 if (result == JNI_OK) {
5051 JavaThread *thread = JavaThread::current();
5052 /* thread is thread_in_vm here */
5053 *vm = (JavaVM *)(&main_vm);
5054 *(JNIEnv**)penv = thread->jni_environment();
5055
5056 // Tracks the time application was running before GC
5057 RuntimeService::record_application_start();
5058
5059 // Notify JVMTI
5060 if (JvmtiExport::should_post_thread_life()) {
5061 JvmtiExport::post_thread_start(thread);
5062 }
5063
5064 EventThreadStart event;
5065 if (event.should_commit()) {
5066 event.set_javalangthread(java_lang_Thread::thread_id(thread->threadObj()));
5067 event.commit();
5068 }
5069
5070 #ifndef PRODUCT
5071 #ifndef TARGET_OS_FAMILY_windows
5072 #define CALL_TEST_FUNC_WITH_WRAPPER_IF_NEEDED(f) f()
5073 #endif
5074
5075 // Check if we should compile all classes on bootclasspath
5076 if (CompileTheWorld) ClassLoader::compile_the_world();
5077 if (ReplayCompiles) ciReplay::replay(thread);
5078
5079 // Some platforms (like Win*) need a wrapper around these test
5080 // functions in order to properly handle error conditions.
5081 CALL_TEST_FUNC_WITH_WRAPPER_IF_NEEDED(test_error_handler);
5082 CALL_TEST_FUNC_WITH_WRAPPER_IF_NEEDED(execute_internal_vm_tests);
5083 #endif
5084
5085 // Since this is not a JVM_ENTRY we have to set the thread state manually before leaving.
5086 ThreadStateTransition::transition_and_fence(thread, _thread_in_vm, _thread_in_native);
5087 } else {
5088 if (can_try_again) {
5089 // reset safe_to_recreate_vm to 1 so that retrial would be possible
5090 safe_to_recreate_vm = 1;
5091 }
5092
5093 // Creation failed. We must reset vm_created
5094 *vm = 0;
5095 *(JNIEnv**)penv = 0;
5096 // reset vm_created last to avoid race condition. Use OrderAccess to
5097 // control both compiler and architectural-based reordering.
5098 OrderAccess::release_store(&vm_created, 0);
5099 }
5100
5101 return result;
5102 }
5103
5104 #ifndef USDT2
5105 HS_DTRACE_PROBE_DECL3(hotspot_jni, GetCreatedJavaVMs__entry, \
5106 JavaVM**, jsize, jsize*);
5107 HS_DTRACE_PROBE_DECL1(hotspot_jni, GetCreatedJavaVMs__return, jint);
5108 #endif /* !USDT2 */
5109
5110 _JNI_IMPORT_OR_EXPORT_ jint JNICALL JNI_GetCreatedJavaVMs(JavaVM **vm_buf, jsize bufLen, jsize *numVMs) {
5111 // See bug 4367188, the wrapper can sometimes cause VM crashes
5112 // JNIWrapper("GetCreatedJavaVMs");
5113 #ifndef USDT2
5114 HS_DTRACE_PROBE3(hotspot_jni, GetCreatedJavaVMs__entry, \
5115 vm_buf, bufLen, numVMs);
5116 #else /* USDT2 */
5117 HOTSPOT_JNI_GETCREATEDJAVAVMS_ENTRY((void **) vm_buf, bufLen, (uintptr_t *) numVMs);
5118 #endif /* USDT2 */
5119 if (vm_created) {
5120 if (numVMs != NULL) *numVMs = 1;
5121 if (bufLen > 0) *vm_buf = (JavaVM *)(&main_vm);
5122 } else {
5123 if (numVMs != NULL) *numVMs = 0;
5124 }
5125 #ifndef USDT2
5126 HS_DTRACE_PROBE1(hotspot_jni, GetCreatedJavaVMs__return, JNI_OK);
5127 #else /* USDT2 */
5128 HOTSPOT_JNI_GETCREATEDJAVAVMS_RETURN(JNI_OK);
5129 #endif /* USDT2 */
5130 return JNI_OK;
5131 }
5132
5133 extern "C" {
5134
5135 #ifndef USDT2
5136 DT_RETURN_MARK_DECL(DestroyJavaVM, jint);
5137 #else /* USDT2 */
5138 DT_RETURN_MARK_DECL(DestroyJavaVM, jint
5139 , HOTSPOT_JNI_DESTROYJAVAVM_RETURN(_ret_ref));
5140 #endif /* USDT2 */
5141
5142 jint JNICALL jni_DestroyJavaVM(JavaVM *vm) {
5143 #ifndef USDT2
5144 DTRACE_PROBE1(hotspot_jni, DestroyJavaVM__entry, vm);
5145 #else /* USDT2 */
5146 HOTSPOT_JNI_DESTROYJAVAVM_ENTRY(vm);
5147 #endif /* USDT2 */
5148 jint res = JNI_ERR;
5149 DT_RETURN_MARK(DestroyJavaVM, jint, (const jint&)res);
5150
5151 if (!vm_created) {
5152 res = JNI_ERR;
5153 return res;
5154 }
5155
5156 JNIWrapper("DestroyJavaVM");
5157 JNIEnv *env;
5158 JavaVMAttachArgs destroyargs;
5159 destroyargs.version = CurrentVersion;
5160 destroyargs.name = (char *)"DestroyJavaVM";
5161 destroyargs.group = NULL;
5162 res = vm->AttachCurrentThread((void **)&env, (void *)&destroyargs);
5163 if (res != JNI_OK) {
5164 return res;
5165 }
5166
5167 // Since this is not a JVM_ENTRY we have to set the thread state manually before entering.
5168 JavaThread* thread = JavaThread::current();
5169 ThreadStateTransition::transition_from_native(thread, _thread_in_vm);
5170 if (Threads::destroy_vm()) {
5171 // Should not change thread state, VM is gone
5172 vm_created = false;
5173 res = JNI_OK;
5174 return res;
5175 } else {
5176 ThreadStateTransition::transition_and_fence(thread, _thread_in_vm, _thread_in_native);
5177 res = JNI_ERR;
5178 return res;
5179 }
5180 }
5181
5182
5183 static jint attach_current_thread(JavaVM *vm, void **penv, void *_args, bool daemon) {
5184 JavaVMAttachArgs *args = (JavaVMAttachArgs *) _args;
5185
5186 // Check below commented out from JDK1.2fcs as well
5187 /*
5188 if (args && (args->version != JNI_VERSION_1_1 || args->version != JNI_VERSION_1_2)) {
5189 return JNI_EVERSION;
5190 }
5191 */
5192
5193 Thread* t = ThreadLocalStorage::get_thread_slow();
5194 if (t != NULL) {
5195 // If the thread has been attached this operation is a no-op
5196 *(JNIEnv**)penv = ((JavaThread*) t)->jni_environment();
5197 return JNI_OK;
5198 }
5199
5200 // Create a thread and mark it as attaching so it will be skipped by the
5201 // ThreadsListEnumerator - see CR 6404306
5202 JavaThread* thread = new JavaThread(true);
5203
5204 // Set correct safepoint info. The thread is going to call into Java when
5205 // initializing the Java level thread object. Hence, the correct state must
5206 // be set in order for the Safepoint code to deal with it correctly.
5207 thread->set_thread_state(_thread_in_vm);
5208 // Must do this before initialize_thread_local_storage
5209 thread->record_stack_base_and_size();
5210
5211 thread->initialize_thread_local_storage();
5212
5213 if (!os::create_attached_thread(thread)) {
5214 delete thread;
5215 return JNI_ERR;
5216 }
5217 // Enable stack overflow checks
5218 thread->create_stack_guard_pages();
5219
5220 thread->initialize_tlab();
5221
5222 thread->cache_global_variables();
5223
5224 // Crucial that we do not have a safepoint check for this thread, since it has
5225 // not been added to the Thread list yet.
5226 { Threads_lock->lock_without_safepoint_check();
5227 // This must be inside this lock in order to get FullGCALot to work properly, i.e., to
5228 // avoid this thread trying to do a GC before it is added to the thread-list
5229 thread->set_active_handles(JNIHandleBlock::allocate_block());
5230 Threads::add(thread, daemon);
5231 Threads_lock->unlock();
5232 }
5233 // Create thread group and name info from attach arguments
5234 oop group = NULL;
5235 char* thread_name = NULL;
5236 if (args != NULL && Threads::is_supported_jni_version(args->version)) {
5237 group = JNIHandles::resolve(args->group);
5238 thread_name = args->name; // may be NULL
5239 }
5240 if (group == NULL) group = Universe::main_thread_group();
5241
5242 // Create Java level thread object and attach it to this thread
5243 bool attach_failed = false;
5244 {
5245 EXCEPTION_MARK;
5246 HandleMark hm(THREAD);
5247 Handle thread_group(THREAD, group);
5248 thread->allocate_threadObj(thread_group, thread_name, daemon, THREAD);
5249 if (HAS_PENDING_EXCEPTION) {
5250 CLEAR_PENDING_EXCEPTION;
5251 // cleanup outside the handle mark.
5252 attach_failed = true;
5253 }
5254 }
5255
5256 if (attach_failed) {
5257 // Added missing cleanup
5258 thread->cleanup_failed_attach_current_thread();
5259 return JNI_ERR;
5260 }
5261
5262 // mark the thread as no longer attaching
5263 // this uses a fence to push the change through so we don't have
5264 // to regrab the threads_lock
5265 thread->set_done_attaching_via_jni();
5266
5267 // Set java thread status.
5268 java_lang_Thread::set_thread_status(thread->threadObj(),
5269 java_lang_Thread::RUNNABLE);
5270
5271 // Notify the debugger
5272 if (JvmtiExport::should_post_thread_life()) {
5273 JvmtiExport::post_thread_start(thread);
5274 }
5275
5276 EventThreadStart event;
5277 if (event.should_commit()) {
5278 event.set_javalangthread(java_lang_Thread::thread_id(thread->threadObj()));
5279 event.commit();
5280 }
5281
5282 *(JNIEnv**)penv = thread->jni_environment();
5283
5284 // Now leaving the VM, so change thread_state. This is normally automatically taken care
5285 // of in the JVM_ENTRY. But in this situation we have to do it manually. Notice, that by
5286 // using ThreadStateTransition::transition, we do a callback to the safepoint code if
5287 // needed.
5288
5289 ThreadStateTransition::transition_and_fence(thread, _thread_in_vm, _thread_in_native);
5290
5291 // Perform any platform dependent FPU setup
5292 os::setup_fpu();
5293
5294 return JNI_OK;
5295 }
5296
5297
5298 jint JNICALL jni_AttachCurrentThread(JavaVM *vm, void **penv, void *_args) {
5299 #ifndef USDT2
5300 DTRACE_PROBE3(hotspot_jni, AttachCurrentThread__entry, vm, penv, _args);
5301 #else /* USDT2 */
5302 HOTSPOT_JNI_ATTACHCURRENTTHREAD_ENTRY(vm, penv, _args);
5303 #endif /* USDT2 */
5304 if (!vm_created) {
5305 #ifndef USDT2
5306 DTRACE_PROBE1(hotspot_jni, AttachCurrentThread__return, JNI_ERR);
5307 #else /* USDT2 */
5308 HOTSPOT_JNI_ATTACHCURRENTTHREAD_RETURN((uint32_t) JNI_ERR);
5309 #endif /* USDT2 */
5310 return JNI_ERR;
5311 }
5312
5313 JNIWrapper("AttachCurrentThread");
5314 jint ret = attach_current_thread(vm, penv, _args, false);
5315 #ifndef USDT2
5316 DTRACE_PROBE1(hotspot_jni, AttachCurrentThread__return, ret);
5317 #else /* USDT2 */
5318 HOTSPOT_JNI_ATTACHCURRENTTHREAD_RETURN(ret);
5319 #endif /* USDT2 */
5320 return ret;
5321 }
5322
5323
5324 jint JNICALL jni_DetachCurrentThread(JavaVM *vm) {
5325 #ifndef USDT2
5326 DTRACE_PROBE1(hotspot_jni, DetachCurrentThread__entry, vm);
5327 #else /* USDT2 */
5328 HOTSPOT_JNI_DETACHCURRENTTHREAD_ENTRY(vm);
5329 #endif /* USDT2 */
5330 VM_Exit::block_if_vm_exited();
5331
5332 JNIWrapper("DetachCurrentThread");
5333
5334 // If the thread has been deattacted the operations is a no-op
5335 if (ThreadLocalStorage::thread() == NULL) {
5336 #ifndef USDT2
5337 DTRACE_PROBE1(hotspot_jni, DetachCurrentThread__return, JNI_OK);
5338 #else /* USDT2 */
5339 HOTSPOT_JNI_DETACHCURRENTTHREAD_RETURN(JNI_OK);
5340 #endif /* USDT2 */
5341 return JNI_OK;
5342 }
5343
5344 JavaThread* thread = JavaThread::current();
5345 if (thread->has_last_Java_frame()) {
5346 #ifndef USDT2
5347 DTRACE_PROBE1(hotspot_jni, DetachCurrentThread__return, JNI_ERR);
5348 #else /* USDT2 */
5349 HOTSPOT_JNI_DETACHCURRENTTHREAD_RETURN((uint32_t) JNI_ERR);
5350 #endif /* USDT2 */
5351 // Can't detach a thread that's running java, that can't work.
5352 return JNI_ERR;
5353 }
5354
5355 // Safepoint support. Have to do call-back to safepoint code, if in the
5356 // middel of a safepoint operation
5357 ThreadStateTransition::transition_from_native(thread, _thread_in_vm);
5358
5359 // XXX: Note that JavaThread::exit() call below removes the guards on the
5360 // stack pages set up via enable_stack_{red,yellow}_zone() calls
5361 // above in jni_AttachCurrentThread. Unfortunately, while the setting
5362 // of the guards is visible in jni_AttachCurrentThread above,
5363 // the removal of the guards is buried below in JavaThread::exit()
5364 // here. The abstraction should be more symmetrically either exposed
5365 // or hidden (e.g. it could probably be hidden in the same
5366 // (platform-dependent) methods where we do alternate stack
5367 // maintenance work?)
5368 thread->exit(false, JavaThread::jni_detach);
5369 delete thread;
5370
5371 #ifndef USDT2
5372 DTRACE_PROBE1(hotspot_jni, DetachCurrentThread__return, JNI_OK);
5373 #else /* USDT2 */
5374 HOTSPOT_JNI_DETACHCURRENTTHREAD_RETURN(JNI_OK);
5375 #endif /* USDT2 */
5376 return JNI_OK;
5377 }
5378
5379 #ifndef USDT2
5380 DT_RETURN_MARK_DECL(GetEnv, jint);
5381 #else /* USDT2 */
5382 DT_RETURN_MARK_DECL(GetEnv, jint
5383 , HOTSPOT_JNI_GETENV_RETURN(_ret_ref));
5384 #endif /* USDT2 */
5385
5386 jint JNICALL jni_GetEnv(JavaVM *vm, void **penv, jint version) {
5387 #ifndef USDT2
5388 DTRACE_PROBE3(hotspot_jni, GetEnv__entry, vm, penv, version);
5389 #else /* USDT2 */
5390 HOTSPOT_JNI_GETENV_ENTRY(vm, penv, version);
5391 #endif /* USDT2 */
5392 jint ret = JNI_ERR;
5393 DT_RETURN_MARK(GetEnv, jint, (const jint&)ret);
5394
5395 if (!vm_created) {
5396 *penv = NULL;
5397 ret = JNI_EDETACHED;
5398 return ret;
5399 }
5400
5401 if (JniExportedInterface::GetExportedInterface(vm, penv, version, &ret)) {
5402 return ret;
5403 }
5404
5405 #ifndef JVMPI_VERSION_1
5406 // need these in order to be polite about older agents
5407 #define JVMPI_VERSION_1 ((jint)0x10000001)
5408 #define JVMPI_VERSION_1_1 ((jint)0x10000002)
5409 #define JVMPI_VERSION_1_2 ((jint)0x10000003)
5410 #endif // !JVMPI_VERSION_1
5411
5412 Thread* thread = ThreadLocalStorage::thread();
5413 if (thread != NULL && thread->is_Java_thread()) {
5414 if (Threads::is_supported_jni_version_including_1_1(version)) {
5415 *(JNIEnv**)penv = ((JavaThread*) thread)->jni_environment();
5416 ret = JNI_OK;
5417 return ret;
5418
5419 } else if (version == JVMPI_VERSION_1 ||
5420 version == JVMPI_VERSION_1_1 ||
5421 version == JVMPI_VERSION_1_2) {
5422 tty->print_cr("ERROR: JVMPI, an experimental interface, is no longer supported.");
5423 tty->print_cr("Please use the supported interface: the JVM Tool Interface (JVM TI).");
5424 ret = JNI_EVERSION;
5425 return ret;
5426 } else if (JvmtiExport::is_jvmdi_version(version)) {
5427 tty->print_cr("FATAL ERROR: JVMDI is no longer supported.");
5428 tty->print_cr("Please use the supported interface: the JVM Tool Interface (JVM TI).");
5429 ret = JNI_EVERSION;
5430 return ret;
5431 } else {
5432 *penv = NULL;
5433 ret = JNI_EVERSION;
5434 return ret;
5435 }
5436 } else {
5437 *penv = NULL;
5438 ret = JNI_EDETACHED;
5439 return ret;
5440 }
5441 }
5442
5443
5444 jint JNICALL jni_AttachCurrentThreadAsDaemon(JavaVM *vm, void **penv, void *_args) {
5445 #ifndef USDT2
5446 DTRACE_PROBE3(hotspot_jni, AttachCurrentThreadAsDaemon__entry, vm, penv, _args);
5447 #else /* USDT2 */
5448 HOTSPOT_JNI_ATTACHCURRENTTHREADASDAEMON_ENTRY(vm, penv, _args);
5449 #endif /* USDT2 */
5450 if (!vm_created) {
5451 #ifndef USDT2
5452 DTRACE_PROBE1(hotspot_jni, AttachCurrentThreadAsDaemon__return, JNI_ERR);
5453 #else /* USDT2 */
5454 HOTSPOT_JNI_ATTACHCURRENTTHREADASDAEMON_RETURN((uint32_t) JNI_ERR);
5455 #endif /* USDT2 */
5456 return JNI_ERR;
5457 }
5458
5459 JNIWrapper("AttachCurrentThreadAsDaemon");
5460 jint ret = attach_current_thread(vm, penv, _args, true);
5461 #ifndef USDT2
5462 DTRACE_PROBE1(hotspot_jni, AttachCurrentThreadAsDaemon__return, ret);
5463 #else /* USDT2 */
5464 HOTSPOT_JNI_ATTACHCURRENTTHREADASDAEMON_RETURN(ret);
5465 #endif /* USDT2 */
5466 return ret;
5467 }
5468
5469
5470 } // End extern "C"
5471
5472 const struct JNIInvokeInterface_ jni_InvokeInterface = {
5473 NULL,
5474 NULL,
5475 NULL,
5476
5477 jni_DestroyJavaVM,
5478 jni_AttachCurrentThread,
5479 jni_DetachCurrentThread,
5480 jni_GetEnv,
5481 jni_AttachCurrentThreadAsDaemon
5482 };